Frame coupling structure and recording device

A main frame extending in a first direction, a side frames extending in a second direction that intersects with the first direction, the side frames being fixed to the main frame, and a supported member extending in the first direction and supported by the side frame are included, wherein the side frame includes a first frame portion extending in the second direction and a second frame portion extending from the first frame portion in the first direction, the second frame portion being in surface contact with the main frame, and in plan view from the second direction, an abutting portion that abuts the main frame is provided at the first frame portion and a fixing portion is provided at the second frame portion, the fixing portion being fixed to the main frame at a position where the second frame portion overlaps with the first frame portion.

The present application is based on, and claims priority from JP Application Serial Number 2020-216423, filed Dec. 25, 2020, the disclosure of which is hereby incorporated by reference herein in its entirety.

BACKGROUND

1. Technical Field

The present disclosure relates to a frame coupling structure and a recording device.

2. Related Art

Recently, a recording device that records a character, an image, etc. on a recording medium are known. Such a recording device is configured into a frame in which a plurality of sheet metals are coupled in a frame shape. For example, in FIG. 5 of JP-A-8-326719, in a case where two sheet metal are fixed at a right angle, a frame coupling structure is illustrated in which a sheet metal having a mounting portion bent in a substantially L shape is fixed using a screw on an upper surface of one the sheet metals.

However, the coupling structure illustrated in FIG. 5 of JP-A-8-326719 is fixed at a position separated from a position where the two sheet metals meet at a right angle, so that there is a possibility that the frame can deform due to insufficient rigidity when an impact is applied to a device by dropping, etc.

SUMMARY

A frame coupling structure includes a main frame extending in a first direction, a side frame extending in a second direction that intersects with the first direction, the side frame being fixed to the main frame, and a supported member extending in the first direction and supported by the side frame, wherein the side frame includes a first frame portion extending in the second direction and a second frame portion extending from the first frame portion in the first direction, the second frame portion being in surface contact with the main frame, and in plan view from the second direction, an abutting portion that abuts the main frame is provided at the first frame portion and a fixing portion is provided at the second frame portion, the fixing portion being fixed to the main frame at a position where the second frame portion overlaps with the first frame portion.

A recording device includes a main frame extending in a first direction, a side frame extending in a second direction that intersects with the first direction, the side frame being fixed to the main frame, a guide member extending in the first direction and supported by the side frame, and a recording head mounted on a carriage that moves along the guide member, the recording head being configured to perform recording on a recording medium, wherein the side frame includes a first frame portion extending in the second direction and a second frame portion extending from the first frame portion in the first direction, the second frame portion being in surface contact with the main frame, and in plan view from the second direction, an abutting portion that abuts the main frame is provided at the first frame portion and a fixing portion is provided at the second frame portion, the fixing portion being fixed to the main frame at a position where the second frame portion overlaps with the first frame portion.

DESCRIPTION OF EXEMPLARY EMBODIMENTS

1. First Exemplary Embodiment

A schematic configuration of a recording device according to a first exemplary embodiment will be described with reference to the drawings. As for the coordinates illustrated in the drawings, assuming that a recording device10is placed at a horizontal installation surface, the three virtual axes orthogonal to each other are defined as the X-axis, the Y-axis, and the Z-axis. The X-axis is a virtual axis parallel to a left-right direction of the recording device10corresponding to a first direction. The Y-axis is a virtual axis parallel to a front-rear direction of the recording device10, corresponding to a second direction. The Z axis is a virtual axis parallel to the height direction of the recording device10. The tip side of the arrows representing the X-axis, Y-axis, and Z-axis is the “+side”, and the base end side is the “−side”. The recording device10illustrated in the present exemplary embodiment is a large-format printer that feeds a long medium wound in a roll shape and performs recording by an ink-jet method. The large-format printer is a printer capable of performing recording on a long medium having a width of 297 mm or more, which corresponds to the short side width of A3-size sheets.

As illustrated inFIGS.1,2and3, the recording device10is installed at an installation surface S via a leg portion11. The recording device10has a substantially rectangular parallelepiped housing12that is long in the X direction. The housing12has a front wall13, a rear wall14, a first side wall15, a second side wall16, and an upper wall17. In the recording device10, a direction in which a base frame65and the upper wall17face each other is the height direction of the recording device10. A direction in which the first side wall15and the second side wall16face each other is the left-right direction of the recording device10. A direction in which the front wall13and the rear wall14face each other is the front-rear direction of the recording device10. The housing12is coupled to a frame60supported by the leg portion11.

The frame60is constituted by a main frame61, a first side frame62, a second side frame63, a subframe64, a base frame65, etc.

The main frame61is a hollow substantially cuboid shaped member extending in the X direction and having an X-Z plane formed by the X-axis and the Z-axis. The main frame61is disposed along the upper wall17at an upper end portion of the frame60. The main frame61of the present exemplary embodiment is constituted by a cold-rolled steel plate having a plate thickness of 1.2 mm.

The first side frame62and the second side frame63are plate-like members extending in the Y direction and having a Y-Z plane formed by the Y-axis and the Z-axis. The first side frame62and the second side frame63constitute a pair of side frames that are fixed to the main frame61at a predetermined interval in the X direction. The first side frame62is provided at a position along the first side wall15. The main frame61is coupled to the upper end portions of the first side frame62and the second side frame63. The first and second side frames62,63of the present exemplary embodiment are constituted by an electrogalvanized steel plate having a plate thickness of 1.2 mm.

The base frame65is a plate-like member extending in the X direction and having an X-Y plane formed by an X-axis and a Y-axis. Lower end portions of the first side frame62and the second side frame63are coupled to an upper surface of the base frame65. A plurality of legs portions11are coupled to a lower surface of the base frame65.

The subframe64is a plate-like member provided parallel to the second side frame63. The subframe64is provided at a position opposite the first side frame62and along the second side wall16with respect to the second side frame63. The lower end portion of the subframe64is coupled to the upper face of the base frame65. The upper end portion of the subframe64is coupled to a side surface of the second side frame63via a frame having an X-Y plane.

Inside the housing12, provided are a recording unit30having a recording head34for performing recording on a recording medium22, an accommodation unit20for accommodating a roll body25at which the recording medium22is wound in a cylindrical shape, a transport unit40for transporting the recording medium22, and a cutting unit50for cutting the recording medium22.

A plurality of openings is formed in the front wall13of the housing12. A roll body accommodating port27for accommodating the roll body25is formed at the base frame65side below the front wall13. In addition, a paper ejection port53for ejecting the recording medium22recorded is formed on the upper side of the roll body accommodating port27.

The accommodation unit20is located between the pair of first and second side frames62,63. The cylindrical roll body25formed by winding the recording long recording medium22around a core member23is accommodated in the accommodation unit20so as to be detachable from the roll body accommodation port27. In the present exemplary embodiment, the accommodation unit20is configured to accommodate two roll bodies25that are long in the X direction in a state of being arranged in the Z direction. A pair of holding members28that holds the roll body25rotatably with respect to the accommodation unit20is attached to both ends of the roll body25. When the roll body25is rotationally driven, the recording medium22wound around the roll body25is delivered to the rear wall14side inside the housing12.

The transport unit40transports the recording medium22delivered from the roll body25. The transport unit40includes a transport path forming unit41, an intermediate roller42, and a transport roller43.

The transport path forming unit41is provided corresponding to each of the two roll bodies25. The transport path forming unit41is located on the rear wall14side with respect to each of the two roll bodies25accommodated in the accommodation unit20. The transport path forming unit41forms a transport path44that guides the recording medium22delivered from the roll body25toward the rear wall14side of the housing12by the rotational driving of the roll body25.

The intermediate roller42and the transport roller43transport the recording medium22having passed through the transport path44to the recording unit30. The intermediate roller42and the transport roller43are supported by the first and second side frames62,63rotatably about an axis along the X direction as the rotation axis. The intermediate roller42and the transport roller43are constituted by a driving roller and a driven roller. The recording medium22is sandwiched between the driving roller and the driven roller from both the front and back sides. When the driving rollers of the intermediate roller42and the transport roller43are rotationally driven, the recording medium22is transported to a support31through the transport path44and is transported on the support31from the rear wall14side to the front wall13side. Note thatFIG.3illustrates a state in which the recording medium22is delivered from both of the two roll bodies25, but during actual recording, the recording medium22is delivered from either one of the two roll bodies25.

The recording unit30includes the support31, a guide member32, a carriage33, and a recording head34.

The support31is a plate-like member extending in the X direction in the housing12, and is supported by the first and second side frames62,63. The support31is located closer to the upper wall17side than the accommodation unit20, and supports the recording medium22transported by the transport unit40.

The guide member32is a rod-shaped member extending in the X direction. The guide member32is located closer to the upper wall17side than the support31, and slidably supports the carriage33. The guide member32is provided along the base frame65. The guide member32is an example of a supported member that extends in the X direction and is supported by the pair of first and second side frames62,63.

The recording head34is mounted on the carriage33that moves along the guide member32. The recording head34is located on the support31side with respect to the carriage33. The recording head34, together with the carriage33, is configured to perform reciprocally movement along the guide member32. The recording head34is coupled to the cartridge35accommodating ink by a flexible tube (not illustrated). The cartridge35is accommodated at a position between the second side frame63and the subframe64, the position being closer to the upper wall17side than the accommodation unit20. The recording head34performs recording on the recording medium22by discharging ink onto the recording medium22supported by the support31while moving in the X direction.

The cutting unit50is located closer to the front wall13side than the recording unit30. The cutting unit50has a fixed blade and a movable blade movable with respect to the fixed blade, and cuts the recording medium22located between the fixed blade and the movable blade. The cut recording medium22is supported by a paper ejection port member51that guides the recording medium22to the paper ejection port53formed at the front wall13, and is ejected to the outside of the housing12.

The recording device10includes an input unit59. The input unit59is provided at an upper surface of the upper wall17of the housing12. The input unit59is located at a corner formed by a portion where the front wall13is coupled to the upper wall17and a portion where the second side wall16is coupled to the upper wall17. The input unit59is configured, for example, by a liquid crystal display device including a touch panel, and is used when a user inputs various types of information.

Next, a coupling structure between the main frame61and the second side frame63will be described. Note that the coupling structure between the main frame61and the first side frame62is the same as the coupling structure of the main frame61and the second side frame63, and thus description thereof will be omitted.

As illustrated inFIGS.4to6, the second side frame63includes a first frame portion70extending in the Y direction, and a second frame portion80extending in the X direction from an end surface in the +Y direction of the first frame portion70. The first frame portion70is a plate-like member having a Y-Z plane formed by the Y-axis and the Z-axis. The second frame portion80is formed by a bending process of a portion of the plate-like member having the Y-Z plane including the first frame portion70. A plurality of the second frame portions80are provided at the first frame portion70. The present exemplary embodiment illustrates a configuration in which two second frame portions80are provided at the first frame portion70. One second frame portion80of the two frames is located on an upper end side of the first frame portion70, and the other second frame portion80is located at a position separated downward from the one second frame portion80.

When the second side frame63is viewed in plan view from the +Y direction, an abutting portion71that abuts the main frame61is provided at the first frame portion70. The abutting portion71is an end surface capable of abutting the main frame61. A plurality of the abutting portions71are provided at an end surface of the first frame portion70on the +Y side. The second frame portion80includes a first extending portion81extending from between the abutting portions71provided at the end surface on the +Y side of the first frame portion70to the −X side as one side along the first direction, and a second extending portion82extending from the end surface on the +X side of the first extending portion81to the +X side as the other side along the first direction.

The first extending portion81is a plate-like member that is long in the Z direction having an X-Z plane formed by the X-axis and the Z-axis. The length thereof in the Z direction is approximately 20 mm.

The second extending portion82is a plate-like member that is long in the Z direction having an X-Z plane formed by the X-axis and the Z-axis. The length of the second extending portion82in the Z direction is approximately 10 mm. The end surface of the second extending portion82on the −X side is coupled to an end surface of a central portion of the first extension portion81on the +X side in the Z direction.

The first extending portion81of the second frame portion80is coupled to the first frame portion70. The end surfaces on the +X side of the first extending portion81adjacent to the upper and lower sides of the second extending portion82in the second frame portion80via a gap therebetween, are coupled to the end surface of the +Y side of the first frame portion70with a coupling width of approximately 3 mm.

Note that, in the present exemplary embodiment, for convenience of explanation, the first extending portion81and the second extending portion82are coupled. However, in reality, these portions are integrally formed by bending a plate-shaped member.

Two of the second frame portions80including one fixing portion83are coupled to the first frame portion70of the present exemplary embodiment.

When the second side frame63is viewed in plan view from the +Y direction, a fixing portion83fixed to the main frame61at a position where the second frame portion80overlaps with the first frame portion70, is provided at the second frame portion80. Specifically, in each of the second frame portions80, the fixing portion83is formed at a midpoint of the second extending portion82in the Z direction, the midpoint being a boundary between the first extending portion81and the second extending portion82in the X direction. In plan view from the +Y direction, the fixing portion83is located at a position where the fixing portion83overlaps with the plate thickness of the first frame portion70, and where the abutting portion71and the fixing portion83are arranged on a straight line CL along the Z direction. The fixing portion83of the present exemplary embodiment is a female screw. The female screw is formed by threading the inner periphery of the through-hole that penetrates the second frame portion80in the Y direction.

As illustrated inFIG.5, the upper end portion of the second side frame63including the first frame portion70and the second frame portion80is inserted into the hollow main frame61from below the main frame61. As a result, the side surface on the +Y side of the X-Z plane of the second frame portion80is in surface contact with the inner side surface on the −Y side of the X-Z plane of the main frame61. A communication hole66that communicates with the fixing portion83formed at the second frame portion80is provided at the side surface on the +Y side of the main frame61. The main frame61and the second side frame63are fixed by a male screw84that is screwed with the female screw as one example of the fixing portion83via the communicating hole66. As illustrated inFIG.6, a notch portion72is provided in the first frame portion70at a position facing the fixing portion83, in order to prevent a tip of the male screw84that is screwed with the fixing portion83from interfering with the first frame portion70.

Here, a configuration of the second side frame363according to the related art will be described.

As illustrated inFIG.10, the second side frame363includes a first frame portion370extending in the Y direction, and a second frame portion380extending in the −X direction from an end portion in the +Y direction of the first frame portion370. The first frame portion370is a plate-like member having a Y-Z plane. The second frame portion380is formed by a bending process of a portion of the plate-like member having the Y-Z plane including the first frame portion370. A plurality of the second frame portions380are provided at the first frame portion370.

When the second side frame363is viewed in plan view from the +Y direction, an abutting portion71that abuts the main frame61is provided at the first frame portion370. The abutting portion71is an end surface that is capable of abutting the main frame61. A plurality of the abutting portions71are provided at an end surface of the first frame portion370on the +Y side.

The second frame portion380is a plate-like member that is long in the Z direction having an X-Z plane formed by the X-axis and the Z-axis. The length of the second frame portion380in the Z direction is approximately 25 mm. The end surfaces on the +X side at the upper end portion and the lower end portion of the second frame portion380are coupled to the end surfaces of the +Y side adjacent to the upper and lower sides of the abutting portion71in the first frame portion370via a gap therebetween. The upper end portion of the second frame portion380is coupled to the first frame portion370at a coupling width of approximately 12 mm. The lower end portion of the second frame portion380is coupled to the first frame portion370at a coupling width of approximately 3 mm.

When the second side frame363is viewed in plan view from the +Y direction, the fixing portion83is provided in the second frame portion380at a position separated in the −X direction from the abutting portion71of the first frame portion370. A separation distance L along the X direction between the fixing portion83and the abutting portion71is approximately 10 mm. The main frame61and the second side frame363are fixed by the male screw84that is screwed with the fixing portion83via the communicating hole66.

In a state in which the main frame61and the second side frame363are fixed, the entire frame60including the main frame61may be deformed due to insufficient rigidity of the second frame portion380, for example, when an impact caused by dropping of the device, etc. is applied. It is considered that this is because the main frame61and the first frame portion370of the second side frame363are fixed at a position separated from the abutting portion71intersecting at a right angle. Therefore, the inventors conceived the shape of the second side frame63described above, and evaluated the rigidity thereof.

FIG.7illustrates each amount of deformation when a force F is applied to the second side frame63described in the first exemplary embodiment and the second side frame363described as the related art, and an improvement rate of the amount of deformation of the second side frame63with respect to the amount of deformation of the second side frame363. The amount of deformation illustrated inFIG.7illustrates the amount of deformation of the fixing portion83that occurs when the force F of 100N along the +Y direction is applied to the fixing portion83by simulation using a finite element method.

As a result of the simulation, the amount of deformation of the fixing portion83of the second side frame363described in the related art was 0.329 mm. The amount of deformation of the fixing portion83of the second side frame63described in the first exemplary embodiment was 0.031 mm, so that the improvement rate reached 90.6%. As a result, it was confirmed that the configuration of the second side frame63described in the first exemplary embodiment can significantly improve the rigidity of the second side frame363described in the related art.

Note that, in the present exemplary embodiment, the configuration in which the two second frame portions80extend from the first frame portion70is illustrated, but the number of the second frame portions80may be one or three or more. Additionally, the first side frame62and the second side frame63may have the same shape or may have a shape that is asymmetric about the Z-axis. Furthermore, the method for fixing the main frame61and the first and second side frames62,63may be a method for fixing by riveting, spot welding, etc., in addition to being screwed by the male screw84.

As described above, according to the frame coupling structure and the recording device10according to the first exemplary embodiment, the following effects can be obtained.

The frame coupling structure includes the main frame61extending in the X direction and the pair of side frames extending in the Y direction and fixed to the main frame61. Furthermore, the first and second side frames62,63constituting the pair of side frames include the first frame portion70extending in the Y direction, and the second frame portion80extending in the X direction from the first frame portion70and in surface contact with the main frame61. In plan view from the Y direction, the main frame61abuts in a T shape with the abutting portion71provided at the first frame portion70of the first and second side frames62,63. The main frame61is fixed by the fixing portion83provided at the second frame portion80. The fixing portion83overlaps with the first frame portion70in plan view from the Y direction. In other words, the abutting portion71and the fixing portion83are located at positions aligned on the straight line CL along the Z direction. As a result, the rigidity of the first and second side frames62,63is improved, so that deformation of the frame60caused by the impact can be suppressed.

The second frame portion80includes the first extending portion81extending to one side along the X direction and the second extending portion82extending to the other side. As a result, the fixing portion83can be easily provided at a position where the fixing portion83overlaps with the first frame portion70in plan view from the Y direction.

The second frame portion80is provided between a plurality of the abutting portions71provided at the first frame portion70. As a result, the effect of suppressing deformation of the frame60due to impact can be improved.

A plurality of the second frame portions80are provided at the first frame portion70. As a result, the effect of suppressing deformation of the frame60due to impact can be improved.

The notch portion72is provided in the first frame portion70at a position facing the fixing portion83. As a result, for example, the tip of the male screw84that is screwed with the fixing portion83interferes with the first frame portion70, and it is possible to suppress the incomplete fixing of the main frame61and the first and second side frames62,63.

The second frame portion80is formed by the bending process. As a result, the first frame portion70and the second frame portion80can be easily configured from one sheet metal.

The recording device10includes the main frame61extending in the X direction, the first and second side frames62,63that constitute the pair of side frames that extend in the Y direction and are fixed to the main frame61, the guide member32supported by the first and second side frames62,63, and the recording head34that moves along with the carriage33along the guide member32to perform recording. Furthermore, the first and second side frames62,63include the first frame portion70extending in the Y direction, and the second frame portion80extending in the X direction from the first frame portion70and in surface contact with the main frame61. In plan view from the Y direction, the main frame61abuts in a T shape with the abutting portion71provided at the first frame portion70of the first and second side frames62,63, and is fixed by the fixing portion83provided at the second frame portion80. The fixing portion83overlaps with the first frame portion70in plan view from the Y direction. In other words, the abutting portion71and the fixing portion83are located at positions aligned on the straight line CL along the Z direction. As a result, the rigidity of the first and second side frames62,63is improved, and it is possible to provide the recording device10that suppresses deformation of the frame60caused by the impact.

2. Second Exemplary Embodiment

A schematic configuration of a second side frame according to a second exemplary embodiment will be described. A second side frame163of the present exemplary embodiment includes a second frame portion180at which a plurality of the fixing portions83are provided. Note that configurations identical to those in the first exemplary embodiment will be denoted by the same reference signs and redundant descriptions will be omitted.

As illustrated inFIG.8, the second side frame163includes a first frame portion170extending in the Y direction, and a second frame portion180extending in the X direction from an end portion in the +Y direction of the first frame portion170. The first frame portion170is a plate-like member having a Y-Z plane. The second frame portion180is formed by a bending process of a portion of the plate-like member having the Y-Z plane including the first frame portion170. One second frame portion180is provided at the first frame portion170.

When the second side frame163is viewed in plan view from the +Y direction, an abutting portion71that abuts the main frame61is provided at the first frame portion170. A plurality of the abutting portions71are provided at an end surface of the first frame portion170on the +Y side. The second frame portion180includes a first extending portion181extending from between the abutting portions71provided at the end surface of the first frame portion170on the +Y side to the −X side, and a second extending portion82extending from the end portion on the +X side of the first extending portion181to the +X side. A plurality of the second extending portions82are provided with respect to the first extending portion181. The present exemplary embodiment illustrates a configuration in which two second extending portions82that are separated in the vertical direction are provided at the first extending portion181.

The first extending portion181is a plate-like member that is long in the Z direction having an X-Z plane formed by the X-axis and the Z-axis. The length thereof in the Z direction is approximately 62 mm. One of the two second extending portions82is located on the upper end side of the first extending portion181, and the other is located on the lower end side of the first extending portion181.

The first extending portion181of the second frame portion180is coupled to the first frame portion170. The end surfaces on the +X side of the first extending portion181adjacent to the upper and lower sides of each second extending portion82in the second frame portion180via a gap therebetween, are coupled to the end surface of the +Y side of the first frame portion170with a coupling width of approximately 3 mm. Note that, in the present exemplary embodiment, for convenience of explanation, the first extending portion181and the second extending portion82are coupled. However, in reality, these portions are integrally formed by bending a plate-shaped member.

One second frame portion180including a plurality of fixing portions83is coupled to the first frame portion170. The second frame portion180of the present exemplary embodiment includes two fixing portions83.

When the second side frame163is viewed in plan view from the +Y direction, a fixing portion83fixed to the main frame61at a position where the second frame portion180overlaps with the first frame portion170, is provided at the second frame portion180. Specifically, in the second frame portion180, the fixing portion83is formed at a midpoint of each second extending portion82in the Z direction, the midpoint being a boundary between the first extending portion181and the second extending portion82in the X direction. In plan view from the +Y direction, the fixing portion83is located at a position where the fixing portion83overlaps with the plate thickness of the first frame portion170, and where the abutting portion71and the fixing portion83are arranged on a straight line CL along the Z direction.

Similar to the first exemplary embodiment, the amount of deformation of the fixing portion83that occurs when the force F of 100N along the +Y direction is applied to the fixing portion83of the second side frame163was calculated by simulation. As a result, the amount of deformation of the fixing portion83of the second side frame163was 0.024 mm, so that the improvement rate reached 92.7%. As a result, it was confirmed that the configuration of the second side frame163described in the second exemplary embodiment has a higher rigidity than the second side frame63described in the first exemplary embodiment.

Note that the configuration of the second side frame163including the two fixing portions83is illustrated in the present exemplary embodiment, however, the second side frame may include three or more fixing portions83.

As described above, according to the frame coupling structure according to the second exemplary embodiment, the following effects can be obtained.

The plurality of fixing portions83are provided at the second frame portion180. As a result, the effect of suppressing deformation of the frame60due to impact can be improved.

3. Third Exemplary Embodiment

A schematic configuration of a second side frame263according to a third exemplary embodiment will be described. The second side frame263of the present exemplary embodiment includes a plurality of second frame portions80,280with different extending orientations. Note that configurations identical to those in the first exemplary embodiment will be denoted by the same reference signs and redundant descriptions will be omitted.

As illustrated inFIG.9, the second side frame263includes the first frame portion70, and the second frame portions80,280that extend in the X direction from the end portion in the +Y direction of the first frame portion70. In other words, the plurality of second frame portions80,280are provided at the first frame portion70. The second frame portions80,280are formed by a bending process of a portion of the plate-like member having the Y-Z plane including the first frame portion70. The second frame portion80is located on the upper end side of the first frame portion70, and the second frame portion280is located at a position separated downward from the second frame portion80.

At least one of the plurality of second frame portions80,280extends from the first frame portion70along the X direction in an orientation different from an orientation of the other second frame portion. Specifically, the second frame portion280includes a first extending portion281extending from between the abutting portions71provided at the end surface on the +Y side of the first frame portion70to the +X side, and a second extending portion282extending from the end surface on the −X side of the first extending portion281to the −X side. In other words, the orientation of the second frame portion280extending from the first frame portion70is different from the orientation of the second frame portion80. In other words, the second frame portion280is configured to be linearly symmetrical with respect to the straight line CL along the Z direction of the second frame portion80.

As described above, according to the frame coupling structure according to the third exemplary embodiment, the following effects can be obtained.

The plurality of second frame portions80,280are provided at the first frame portion70, and at least one of the plurality of second frame portions80,280extends from the first frame portion70along the X direction in the orientation different from the orientation of the other second frame portion. In this manner, by changing the orientation of the second frame portion80and the second frame portion280extending from the first frame portion70, the effects of suppressing deformation of the frame60can be improved.