JP2015075649A - Display device fixture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display device fixture capable of fitting a display device to a fitting panel stably irrespective of the thickness of the fitting panel.SOLUTION: There is provided a fixture for fitting a display device 1 to a circular fitting hole PH formed in a fitting panel P, the fixture comprising: a fitting part 6B protruding in cylindrical form from the display device 1 and inserted into the fitting hole PH, and having a fitting part-side screw groove 6C formed on its outer circumferential surface; and a fitting nut 20 having a nut-side screw groove for engaging with the fitting part-side screw groove 6C formed on its outer circumferential surface and provided with an extension part extending to the outer circumferential surface outward of the fitting hole PH. The extension part has a first counter surface facing the fitting panel P when the fitting nut 20 is screwed from one open end with the fitting part 6B and a second counter surface facing the fitting panel P when the fitting nut 20 is screwed from the other open end with the fitting part 6B, a distance from the other open end to the second counter surface being made to be longer than a distance from the one open end to the first counter surface.

Description

  The present invention relates to a fixture for a display device.

  Conventionally, a display device such as a fish finder attached to a mounting panel provided in a ship or the like is known. This type of display device is usually attached to the attachment panel by being screwed from the back side of the attachment panel in a form in which a part thereof is inserted into an attachment hole provided in the attachment panel. Such a display device is disclosed in Patent Document 1, for example.

Japanese Patent No. 4871235

  However, in the display device disclosed in Patent Document 1, a space for screwing the display device cannot be sufficiently secured on the back side of the mounting panel depending on the thickness of the mounting panel. It was difficult to install stably.

  The technology disclosed in the present specification has been created in view of the above problems, and is a display device that can stably attach a display device to a mounting panel regardless of the thickness of the mounting panel. The object is to provide a fixture.

  The technology disclosed in this specification is a fixture for attaching a display device having a display screen to a circular attachment hole formed in the attachment panel, and does not have the display screen among the display devices. It protrudes in a cylindrical shape from the surface, is inserted through the mounting hole, and has a mounting portion in which a thread groove is formed on the outer peripheral surface, and has an annular shape on both inner peripheral surfaces of one open end and the other open end. A threaded member formed with a threaded groove to be threadedly engaged with the threaded groove of the mounting part, and provided with a projecting part projecting outward from the mounting hole on the outer peripheral surface, the projecting part comprising: A first facing surface that faces the mounting panel when the screwing member is screwed to the mounting portion from the one opening end, and the screwing member is screwed to the mounting portion from the other opening end. A second facing surface that faces the mounting panel when Distance from the open end of the square to the second facing surface, to fitting of the display device, characterized in that there is a longer than the distance to the first opposing surface from the open end of the one.

  According to the above-described fixture of the display device, the mounting panel is sandwiched between a part of the display device and the screwing member by screwing the screwing member into the mounting portion inserted into the mounting hole. The display device can be attached to the mounting panel. At this time, since the opening edge of the mounting hole of the mounting panel is sandwiched between a part of the display device and the screwing member over the entire circumference, the display device is screwed to a plurality of locations on the mounting panel. As a result, the display device can be stably attached to the attachment panel as compared with the conventional structure attached to the attachment panel.

  Further, in the display device fixture described above, the distance from one opening end of the screwing member to the first facing surface is different from the distance from the other opening end to the second facing surface. The distance between a part of the display device and the screwing member when the mounting panel is sandwiched is different between when screwing into the mounting part from one opening end and when screwing into the mounting part from the other opening end. It is supposed to be. For this reason, for a mounting panel having a relatively large thickness, the screwing member is screwed into the mounting portion so that the second facing surface faces the mounting panel, and the mounting panel having a relatively small thickness is formed. On the other hand, the screwing member is screwed to the mounting portion so that the first facing surface faces the mounting panel, so that the portion between the display device and the screwing member is interposed regardless of the thickness of the mounting panel. A mounting panel can be inserted. As described above, according to the display device fixture described above, the display device can be stably attached to the mounting panel regardless of the thickness of the mounting panel.

  In the display device fixture described above, the protruding portion has a plurality of protrusions, and the attachment portion includes a lock position that has entered between at least a pair of protrusions of the plurality of protrusions, and the lock. You may further provide the locking member provided so that a movement from the position to the non-locking position retracted along the thickness direction of the mounting panel is possible.

  According to this configuration, when the lock member is moved to the unlocked position, the lock member is disengaged between at least the pair of protrusions of the overhanging portion, so that the screwing member is rotated and screwed into the mounting portion. Can do. On the other hand, in a state where the lock member is moved to the lock position, the screw member is made non-rotatable by the lock member entering between at least a pair of protrusions of the projecting portion. For this reason, when the screwing member is screwed into the mounting portion, the locking member can prevent the screwing member from rotating in a direction away from the mounting portion due to vibration or the like. It is possible to prevent the slippage.

  According to the technology disclosed in the present specification, it is possible to provide a display device fixture that can stably attach the display device to the attachment panel regardless of the thickness of the attachment panel.

The perspective view which looked at the display device concerning an embodiment from the front side The perspective view which looked at the display device in the 1st opposite state from the back side Side view of display device in first facing state and side sectional view of first mounting panel Side view of display device in second facing state and side sectional view of second mounting panel Rear view of display device The perspective view which looked at the display device from which the mounting nut was removed from the back side Perspective view of mounting nut Perspective view of lock member The perspective view which looked at the bracket attachment part neighborhood of a display device from the back side Perspective view of the vicinity of the bracket mounting part of the display device viewed from the side The perspective view which shows the engagement aspect of the lock member in a 1st opposing state The perspective view which shows the engagement aspect of the lock member in a 2nd opposing state

  Embodiments will be described with reference to the drawings. In the present embodiment, the display device 1 used for a fish detector or the like attached to a mounting panel P (see FIG. 2) provided on a ship or the like, and the circular shape formed on the mounting panel P are used for the display device 1. The attachment nut (an example of a screwing member) 20 for attaching to the attachment hole PH is illustrated. As shown in FIG. 1 and FIG. 2, the display device 1 is disposed on the front (left side in FIG. 1) and arranged to be exposed, the panel member 4 surrounding the display 2, and the rear. And a cover member 6, which are assembled to each other.

  In addition, a part of each drawing shows an X axis, a Y axis, and a Z axis that are orthogonal to each other, and each axis direction is drawn to be a common direction in each drawing. Of these, the X-axis direction matches the left direction (left side), the Y-axis direction matches the upward direction, the Z-axis direction matches the rear direction (back direction), and the thickness of the mounting panel It matches the direction.

(Configuration of display device)
The display unit 2 has a substantially square shape, and includes a display screen 2A, a protection panel 2B, and an operation unit 2C. The display screen 2A includes, for example, a liquid crystal panel (not shown) and a backlight (not shown) that supplies light to the liquid crystal panel. The protection panel 2B is a transmissive member and is arranged so as to cover the front surface of the display screen 2A, and protects the display screen 2A from the outside. Below the display screen 2A, an operation unit 2C including a dial and a plurality of rubber keys is provided.

  The panel member 4 is formed of a resin material, has a frame shape surrounding the display unit 2, and covers the entire side surface of the display unit 2. The cover member 6 is disposed on the rear side of the display unit 2 and the panel member 4. The cover member 6 is formed of a resin material, and is attached to the rear side of the panel member 4 along the inner periphery thereof. The cover plate 6 has a substantially square flat plate portion 6A, and an attachment projecting in a cylindrical shape from the back surface of the flat plate portion 6A. Part 6B. As shown in FIG. 4, the size of the outer periphery of the attachment portion 6B when the display device 1 is viewed from the rear side is slightly smaller than the size of the outer periphery of the flat plate portion 6A. In the present embodiment, the combination of the mounting nut 20, the mounting portion 6 </ b> B of the cover member 6 and the lock member 30 described later is an example of the mounting tool.

  As shown in FIG. 7, the thickness direction of the mounting panel P (the central axis direction of the mounting portion 6B, the Z-axis direction) is provided on a part of the outer peripheral surface of the mounting portion 6B, specifically, on the left and right sides of the outer peripheral surface. A thread groove (hereinafter referred to as a mounting part side thread groove) 6C is formed over the entire area. A mounting nut 20 described later is screwed into the mounting portion side thread groove 6C.

  As shown in FIG. 4, three power connectors 7 </ b> A and 7 </ b> B that open downward to supply power to the display unit 2 are provided on the upper semicircular portion of the rear surface of the mounting portion 6 </ b> B that has a circular shape. It has been. Of the three power connectors 7A and 7B, one connector provided substantially in the center is the first power connector 7A, and the other two are the second power connectors 7B. When the display device 1 is operated, one of the first power connector 7A and the second power connector 7B is used, and the other is sealed with a seal tape or the like.

  As shown in FIG. 5, a protruding portion 6D that further protrudes rearward is provided on the lower semicircular portion of the rear surface of the circular mounting portion 6B. A housing portion 8 for a lock member 30 to be described later is provided in a part of the protruding portion 6D.

(Configuration of mounting nut)
Next, the configuration of the mounting nut 20 will be described in detail with reference to FIG. As shown in FIG. 6, the mounting nut 20 has an annular shape with both ends opened in the Z-axis direction, that is, the thickness direction of the mounting panel P, and extends outward from the main body portion 20A and the outer peripheral surface of the main body portion 20A. It consists of a protruding portion 20B.

  As shown in FIG. 4, the main body portion 20 </ b> A has an inner diameter substantially equal to the outer diameter of the mounting portion 6 </ b> B, and is threaded into the mounting portion-side screw groove 6 </ b> C over the entire inner peripheral surface thereof. Hereinafter, 20C (referred to as a nut-side thread groove) is formed (see FIG. 6).

  In the present embodiment, the mounting portion side thread groove 6C and the nut side thread groove 20C are respectively arranged so that the clockwise direction when the mounting portion 6B is viewed from the rear side (see FIG. 4) is the tightening direction of the mounting nut 20. Is formed. Accordingly, when the mounting nut 20 is rotated clockwise while the nut-side thread groove 20C of the mounting nut 20 is directed to the rear end of the mounting part-side thread groove 6C of the mounting part 6B, the mounting nut 20 is attached to the mounting part 6B. The mounting nut 20 advances forward along the thickness direction of the mounting panel P.

  As shown in FIG. 6, the overhanging portion 20B is formed at a substantially equal interval over the entire circumference of the overhanging portion 20B and the overhanging portion 20B1 over the entire circumference of the overhanging portion 20B. The plurality of protrusions 20B2 project outward from a position near one opening end 21 in the outer peripheral surface of the main body 20A (see FIGS. 3A and 3B). The projecting portion 20B projects outward from the outer peripheral surface of the main body portion 20A, so that the outer diameter thereof is larger than the outer diameter of the main body portion 20A.

  When the display device 1 according to this embodiment is attached to the attachment hole PH of the attachment panel P, the attachment portion 6B of the cover member 6 is inserted into the attachment hole PH, and the attachment nut 20 is screwed into the attachment portion 6B. The 20 overhanging portions 20B face the mounting panel P. Further, by rotating the mounting nut 20 in the tightening direction, the overhanging portion 20B of the mounting nut 20 contacts the mounting panel P, and the mounting panel P is located between the overhanging portion 20B and the flat plate portion 6A of the cover member 6. Thus, the display device 1 is attached to the attachment panel P. By being set as such an attachment mode, display device 1 will be attached to attachment panel P in the state where the opening edge of attachment hole PH provided in attachment panel P was inserted over the perimeter. . For this reason, in the mounting mode of this embodiment, the display device 1 is more stable with respect to the mounting panel P than the conventional mounting mode in which the display device 1 is mounted on the mounting panel P by screwing from the back side of the mounting panel P. Can be attached.

  Here, in the present embodiment, a surface of the overhang portion 20B that faces the mounting panel P when the mounting nut 20 is screwed into the mounting portion 6B from one open end 21 is defined as a first facing surface 20B3 (see FIG. 3A), the surface facing the mounting panel P when the mounting nut 20 is screwed into the mounting portion 6B from the other opening end 22 is defined as a second facing surface 20B4 (see FIG. 3B). Hereinafter, a state in which the mounting nut 20 is screwed into the mounting portion 6B in a direction in which the first facing surface 20B3 of the overhanging portion 20B faces the mounting panel P is referred to as a first facing state (a state shown in FIG. 3A). A state in which the mounting nut 20 is screwed into the mounting portion 6B in a direction in which the second facing surface 20B4 of the protruding portion 20B faces the mounting panel P is referred to as a second facing state (state shown in FIG. 3B).

  As shown in FIGS. 3A and 3B, in the mounting nut 20 of this embodiment, the positions in the thickness direction (Z-axis direction) of the mounting panels P1 and P2 between the one open end 21 and the first facing surface 20B3 coincide. In contrast, the positions of the other opening end 22 and the second facing surface 20B4 in the thickness direction (Z-axis direction) of the mounting panels P1, P2 are different. Therefore, in the mounting nut 20, the distance from the other opening end 22 to the second facing surface 20B4 is longer than the distance from the one opening end 21 to the first facing surface 20B3.

  When the mounting nut 20 is configured as described above, in the case of the first mounting panel P1 having a relatively small thickness (see FIG. 3A), the mounting nut 20 is attached to the mounting portion 6B from the one open end 21 thereof. The distance D1 from the first facing surface 20B3 to the flat plate portion 6A of the cover member 6 can be made relatively small. On the other hand, in the case of the second mounting panel P2 having a relatively large thickness (see FIG. 3B), the mounting nut 20 is reversed and the mounting nut 20 is screwed into the mounting portion 6B from the other open end 22. Thus, the distance D2 from the second facing surface 20B4 to the flat plate portion 6A of the cover member 6 can be relatively increased.

  Thus, according to the thickness of the mounting panel P, the distance from the protruding portion 20B of the mounting nut 20 to the flat plate portion 6A of the cover member 6 when the mounting nut 20 is screwed to the mounting portion 6B can be changed. . For this reason, regardless of the thickness of the mounting panel P, the mounting panel P can be stably sandwiched between the overhanging portion 20B and the flat plate portion 6A, and the display device 1 of this embodiment is attached to the mounting panel P. Can do.

  In the present embodiment, the outer diameter of the mounting portion 6B is designed to be substantially the same as the inner diameter of the mounting hole PH of the specified mounting panel P to which the display device 1 is mounted, and as described above, the mounting nut 20 The position of one opening end 21 and the first facing surface 20B3 in the thickness direction (Z-axis direction) of the mounting panel P is the same. For this reason, when the mounting nut 20 is screwed into the mounting portion 6B from one opening end 21 thereof, only the mounting portion side thread groove 6C is exposed between the overhanging portion 20B and the flat plate portion 6A (see FIG. 3A). In the state where the display device 1 is attached to the first attachment panel P1, the inner peripheral surface of the attachment hole PH1 of the first attachment panel P1 is close to the attachment portion side thread groove 6C.

  On the other hand, when the mounting nut 20 is screwed into the mounting portion 6B from the other opening end 22, the mounting portion side thread groove 6C and the main body portion 20A of the mounting nut 20 are exposed between the overhanging portion 20B and the flat plate portion 6A. (See FIG. 3B). Here, since the outer diameter of the main body portion 20A is larger than the outer diameter of the attachment portion side thread groove 6C, when the attachment nut 20 is screwed into the attachment portion 6B from the other opening end 22, the attachment hole PH of the attachment panel P is provided. The processing which expands is needed. After performing this processing on the second mounting panel P2, in the state where the display device 1 is mounted on the second mounting panel P2, the inner peripheral surface of the mounting hole PH2 of the second mounting panel P2 is the outer periphery of the main body portion 20A. Close to the surface.

(Configuration and mounting mode of lock member)
Next, the configuration of the lock member 30 for locking the mounting nut 20 screwed to the mounting portion 6B so as to be non-rotatable and its mounting mode will be described in detail. The lock member 30 is made of metal and has an inverted U-shape composed of a first plate-like portion 31, a second plate-like portion 32, and a third plate-like portion 33, as shown in FIG. There is no.

  The first plate-like portion 31 is a portion that is accommodated in the accommodating portion 8 of the cover member 6 to be described later, and an opening portion 31A that opens in a rectangular shape with the front-rear direction (Z-axis direction) as a long side is provided at the center. ing. In addition, at a portion between the opening 31A and the tip of the first plate-like portion 31, a hollow portion 31B that is depressed in the thickness direction (X-axis direction) of the first plate-like portion 31 is a front-rear direction (Z-axis direction). 2) are formed side by side. These recessed portions 31 </ b> B are recessed so as to open to the outside of the first plate-shaped portion 31. Moreover, the inner surface of these hollow parts 31B becomes a taper shape which stands | starts up toward the non-hollow part 31C located between the two hollow parts 31B.

  The third plate-like portion 33 is opposed to be parallel to the first plate-like portion 31. At one side end portion (end portion in the Y-axis direction) of the third plate-like portion 33, a bent portion that is bent and extends in an oblique direction from the third plate-like portion 33 toward the first plate-like portion 31 side. 33A is provided. The second plate-like portion 32 is connected between the first plate-like portion 31 and the second plate-like portion 32 so as to be orthogonal to each other.

  Here, the configuration of the accommodating portion 8 of the cover member 6 in which the lock member 30 is accommodated will be described. As shown in FIG. 5, a housing portion 8 that is notched so as to house the first plate-like portion 31 of the lock member 30 is provided in a part of the right side surface of the protruding portion 6 </ b> D of the cover member 6. It has been. The accommodating portion 8 is provided so as to open to the right side from the front end to the rear end of the protruding portion 6D and also open to the rear.

  As shown in FIG. 8, the opening edge of the portion that opens to the right side in the housing portion 8 is folded inward, and is opposed to the surface that is exposed to the right side in the housing portion 8 (hereinafter, referred to as the right side). The tip of the folded portion is referred to as a folded tip 8A, and the surface exposed to the right side is referred to as a side exposed surface 8B). In a state where the first plate-like portion 31 of the lock member 30 is housed in the housing portion 8, the first plate-like portion 31 is sandwiched in the thickness direction between the folded tip portion 8 </ b> A and the side exposed surface 8 </ b> B. Thus, the lock member 30 is engaged with the housing portion 8 so as not to move in the left-right direction (X-axis direction).

  As shown in FIG. 9, a plurality of hemispherical protrusions 8 </ b> C projecting in a hemispherical shape and a cross section viewed from the vertical direction (Y-axis direction) are trapezoidal on the side exposed surface 8 </ b> B of the housing portion 8. A protruding trapezoidal protrusion 8D is provided side by side along the front-rear direction. Specifically, four hemispherical protrusions 8C are provided in a row along the front-rear direction at a substantially central position in the vertical direction of the side exposed surface 8B, and one trapezoidal shape is provided behind these hemispherical protrusions 8C. A protrusion 8D is provided. Further, the front side surface of the side surfaces of the trapezoidal protrusion 8D rises so as to be perpendicular to the side exposed surface 8B.

  When the lock member 30 is accommodated in the accommodating portion 8 having such a configuration, the tip of the first plate-like portion 31 is placed between the hemispherical protrusion 8C and the trapezoidal protrusion 8D, and the tip end is folded as described above. The lock member 30 is moved along the front-rear direction so that the first plate-like portion 31 is sandwiched in the thickness direction between 8A and the side exposed surface 8B. Then, as shown in FIG. 10, the hemispherical protrusion 8C enters each of the two recessed portions 31B of the first plate-shaped portion 31, and the non-recessed portion of the first plate-shaped portion 31 between the adjacent hemispherical protrusions 8C. 31C enters, so that the lock member 30 is engaged in the front-rear direction (Z-axis direction).

  Here, since the inner surfaces of the two recessed portions 31B are tapered as described above, the lock member 30 is moved back and forth by applying a force in the front-rear direction when the lock member 30 is engaged in the front-rear direction. It can be moved along the direction. Further, when the lock member 30 is moved in the front-rear direction, the hemispherical protrusion 8C located behind the hollow portion 31B enters the opening 31A and does not interfere with the first plate-like portion 31, so that the lock member 30 is moved. It can be moved smoothly along the front-rear direction. For this reason, the lock member 30 can be moved stepwise along the front-rear direction between the four hemispherical protrusions 8C.

  Further, when the lock member 30 is moved backward from the engaged state in the front-rear direction, the front end surface 31A1 (see FIG. 7) of the opening 31A comes into contact with the front side surface of the trapezoidal protrusion 8D (FIG. 11). reference). Here, as described above, since the front side surface of the trapezoidal protrusion 8D rises perpendicularly to the side exposed surface 8B, the front end surface 31A1 is in contact with the front side surface of the trapezoidal protrusion 8D. Touch. For this reason, when the front end surface 31A1 is in contact with the trapezoidal protrusion 8D, the lock member 30 is less likely to move backward. That is, the trapezoidal protrusion 8 </ b> D functions to prevent the lock member 30 from coming off from the accommodating portion 8.

  Next, an engagement mode between the lock member 30 housed in the housing portion 8 and the mounting nut 20 will be described. When the lock member 30 is housed in the housing portion 8 and moved forward in a state where the mounting nut 20 is screwed into the mounting portion 6B, the bent portion 33A of the lock member 30 is attached as shown in FIGS. It will be in the state which entered between a pair of protrusion 20B2 among several protrusion 20B2 of the nut 20 (henceforth, the position of the lock member 30 in this state is called a lock position). In a state where the lock member 30 is moved to the locked position, when the mounting nut 20 rotates, one of the pair of protrusions 20B2 located on both sides of the bent portion 33A interferes with the bent portion 33A, and the mounting nut 20 rotates further. Is prevented. That is, the mounting nut 20 is locked by the lock member 30 so as not to rotate.

  On the other hand, when the lock member 30 is moved rearward from the lock position, the bent portion 33A of the lock member 30 is disengaged from between the pair of protrusions 20B2 of the mounting nut 20 (hereinafter, the lock member 30 in this state). The position is referred to as the unlocked position). In a state where the lock member 30 is moved to the unlocked position, even if the mounting nut 20 is rotated, the pair of protrusions 20B2 do not interfere with the bent portion 33A, so that the mounting nut 20 can be rotated. That is, when the lock member 30 moves from the lock position to the non-lock position, the lock of the rotation of the mounting nut 20 by the lock member 30 is released.

(Effect of embodiment)
As described above, in the present embodiment, the mounting nut 20 is screwed into the mounting portion 6B of the display device 1 inserted through the mounting hole PH of the mounting panel P, so that the flat plate portion 6A and the mounting nut 20 of the display device 1 are screwed. The mounting panel P is sandwiched between the display panel 1 and the display device 1 so that the display device 1 can be attached to the mounting panel P. At this time, since the opening edge of the mounting hole PH of the mounting panel P is sandwiched between the flat plate portion 6A of the display device 1 and the mounting nut 20 over the entire circumference, the display device 1 is attached to the mounting panel P. The display device 1 can be stably attached to the attachment panel P as compared with the conventional configuration attached to the attachment panel P by screwing or the like at a plurality of locations.

  Furthermore, in this embodiment, since the distance from one opening end 21 of the mounting nut 20 to the first facing surface 20B3 is different from the distance from the other opening end 22 to the second facing surface 20B4, the mounting nut 20 is The flat plate portion 6A and the mounting nut 20 of the display device 1 when the mounting panel P is sandwiched between the case where the opening panel 21 is screwed to the mounting portion 6B and the case where the other opening end 22 is screwed to the mounting portion. The distance between is different. Therefore, for the second mounting panel P2 having a relatively large thickness, the mounting portion 6B is inserted into the mounting hole PH2 (see FIG. 3B), and the second facing surface 20B4 is the second mounting panel P2. The mounting nut 20 is screwed into the mounting portion 6B so as to face the mounting portion 6B, and the mounting portion 6B is inserted into the mounting hole PH1 (see FIG. 3A) for the first mounting panel P1 having a relatively small thickness. Then, the mounting nut 20 is screwed into the mounting portion 6B so that the first facing surface 20B3 faces the first mounting panel P1, so that the flat plate portion of the display device 1 regardless of the thickness of the mounting panels P1 and P2. The mounting panels P1 and P2 can be sandwiched between 6A and the mounting nut 20. As described above, in the present embodiment, the display device 1 can be stably attached to the attachment panel P regardless of the thickness of the attachment panel P.

  Further, in the present embodiment, the overhang portion 20B has a plurality of protrusions 20B2, and the attachment portion 6B is attached from the lock position that has entered between the pair of protrusions 20B2 of the plurality of protrusions 20B2, and the lock position. It is set as the structure provided with the locking member 30 provided so that a movement to the non-locking position which retracted along the thickness direction of the panel P was possible. With such a configuration, when the lock member 30 is moved to the non-lock position, the lock member 30 is disengaged from between the pair of protrusions 20B2 of the overhanging portion 20B, so that the mounting nut 20 is rotated. And can be screwed onto the mounting portion 6B. On the other hand, in a state where the lock member 30 has moved to the lock position, the lock member 30 enters between the pair of protrusions 20B2 of the overhanging portion 20B, so that the mounting nut 20 cannot be rotated. For this reason, when the mounting nut 20 is screwed into the mounting portion 6B, the locking member 30 can prevent the mounting nut 20 from rotating in a direction away from the mounting portion 6B due to vibration or the like. It is possible to prevent unintentional detachment from 6B.

<Other embodiments>
The present invention is not limited to the embodiments described above and with reference to the drawings. For example, the following embodiments are also included in the technical scope of the present invention.

(1) In the above embodiment, the configuration in which one opening end of the mounting nut coincides with the position of the first opposing surface in the thickness direction of the mounting panel is not limited to this configuration. When one overhang is provided on the mounting nut, the distance in the thickness direction from one opening end to the first facing surface, and the distance in the thickness direction from the other opening end to the second facing surface; It is only necessary that the overhanging portion is provided so that they are different.

(2) In the above-described embodiment, the configuration in which one overhang portion is provided in the mounting nut is illustrated, but a configuration in which two overhang portions are provided in the mounting nut may be employed. In this case, in the mounting nut, the distance from the other opening end to the other opening end side surface (second opposing surface) in the other overhanging portion is the one in the overhanging portion from the one opening end. What is necessary is just to be made into the thing longer than the distance to the surface (1st opposing surface) of the opening end side.

(3) In the above embodiment, the configuration in which the hook-like portion and the protrusion of the overhang portion are formed over the entire circumference of the overhang portion is illustrated. However, the hook-like portion and the protrusion are the outer peripheral surface of the overhang portion. The structure currently formed in a part of may be sufficient.

(4) In the above embodiment, the fixture for the display device used in the fish finder or the like has been exemplified, but the present invention can also be applied to display devices used for various other purposes.

  As mentioned above, although each embodiment of this invention was described in detail, these are only illustrations and do not limit a claim. The technology described in the claims includes various modifications and changes of the specific examples illustrated above.

DESCRIPTION OF SYMBOLS 1 ... Display apparatus 2 ... Display part 2A ... Display screen 4 ... Panel member 6 ... Cover member 6A ... Flat plate part 6B ... Attachment part 6C ... Attachment part side screw groove 6D ... Protrusion part 8 ... Accommodating part 8A ... Folding front-end | tip part 8B ... Side exposed surface 8C ... hemispherical projection 8D ... trapezoidal projection 20 ... mounting nut 20A ... main body 20B ... overhang 20B1 ... bowl-like portion 20B2 ... projection 20B3 ... first opposing surface 20B4 ... second opposing surface 20C ... nut Side screw groove 21... One opening end 22... The other opening end 30... Lock member 31... First plate-like portion 31 A .. opening portion 31 B .. depression portion 31 C ... non-recessed portion 32 ... second plate-like portion 33. Plate-like part 33A ... Bent part

Claims (2)

A mounting tool for mounting a display device having a display screen in a circular mounting hole formed in a mounting panel,
A mounting portion that protrudes in a cylindrical shape from the surface of the display device that does not have the display screen, is inserted through the mounting hole, and has a thread groove formed on an outer peripheral surface thereof;
An annular shape is formed, and screw grooves that are screwed into the screw grooves of the mounting portion are formed on the inner peripheral surfaces of both the one open end and the other open end, and are projected outward from the mounting holes on the outer peripheral surface. A screwing member provided with a protruding portion,
The overhanging portion includes a first facing surface that faces the mounting panel when the screwing member is screwed into the mounting portion from the one opening end, and the screwing member from the other opening end. A second facing surface that faces the mounting panel when screwed into the mounting portion, and a distance from the other opening end to the second facing surface is from the one opening end to the first facing A display fixture, which is longer than the distance to the surface. It is a fixture of the display apparatus of Claim 1, Comprising:
The overhang has a plurality of protrusions,
The mounting portion is provided so as to be movable between a locked position that has entered between at least a pair of protrusions of the plurality of protrusions, and a non-locking position that is retracted along the thickness direction of the mounting panel from the lock position. A display device fixture further comprising a locking member.

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