Monitor mounting device

Abstract

This invention provides a monitor mounting device that allows monitors to be attached to vehicle stays having various diameters and distances between stays. [Solution] The monitor mounting device comprises a first rotating cylinder having a plurality of through holes of predetermined diameters, a second rotating cylinder positioned at a predetermined distance from the first rotating cylinder and having through holes that individually correspond to each of the plurality of through holes provided in the first rotating cylinder, a first opening facing at least one of the plurality of through holes of the first rotating cylinder, and a second opening facing at least one of the plurality of through holes of the second rotating cylinder that corresponds to the through hole of the first rotating cylinder that faces the first opening, a housing that rotatably holds the first rotating cylinder and the second rotating cylinder, and a connection mechanism for connecting to a monitor.

Description

Technical Field

[0004] , , , , , ,

[0005] , , , , , , , ,

[0001] The present invention relates to a monitor mounting device for mounting a monitor on a vehicle.

Background Art

[0002] In recent years, vehicles such as taxis may be equipped with a headrest monitor for displaying advertisements or the like to passengers during a ride. Patent Documents 1 and 2 disclose mechanisms for attaching a monitor to a headrest.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, many headrest monitors are attached to a stay (shaft) that connects the back seat and the headrest of a vehicle as in Patent Document 1. However, the diameter of this stay and the distance between the stays vary depending on the vehicle, and it is not practical to prepare mounting devices with the same configuration as in Patent Document 1 for each type of vehicle. Although it is conceivable to adopt a structure that sandwiches the stay as in Patent Document 2 so as to accommodate stays with various diameters and distances between stays, in the case of the configuration of Patent Document 2, there is a concern that if the screw connecting the fixed arm that sandwiches the stay loosens, the monitor may fall on a person.

[0005] Therefore, the present invention has been made in view of the above problems, and an object thereof is to provide a monitor mounting device that can respond to various diameters of stays and distances between stays and is difficult to come off the stay.

Means for Solving the Problems

[0006] To solve the above problems, a monitor mounting device according to one aspect of the present invention comprises a first rotating cylinder having a plurality of through holes of predetermined diameters, a second rotating cylinder disposed at a predetermined distance from the first rotating cylinder and having through holes that individually correspond to each of the plurality of through holes provided in the first rotating cylinder, a first opening facing at least one of the plurality of through holes of the first rotating cylinder, and a second opening facing at least one of the plurality of through holes of the second rotating cylinder that corresponds to the through hole of the first rotating cylinder that faces the first opening, a housing that rotatably holds the first rotating cylinder and rotatably holds the second rotating cylinder, and a connection mechanism for connecting to a monitor.

[0007] In the above-described monitor mounting device, the housing may be provided with a restraining part that restrains the rotation of the first rotating cylinder and the second rotating cylinder.

[0008] In the monitor mounting device described above, the restraining part comprises a rotating part that rotates on an axis parallel to the rotation axis of the first rotating cylinder and the second rotating cylinder, a first stopper that changes from a non-contact state to a contact state with the first rotating cylinder as the rotating part rotates, and a second stopper that changes from a non-contact state to a contact state with the second rotating cylinder as the rotating part rotates. The restraining part restrains the rotation of the first rotating cylinder and the second rotating cylinder by bringing the first stopper into contact with the first rotating cylinder and the second stopper into contact with the second rotating cylinder, and may be provided between the first rotating cylinder and the second rotating cylinder.

[0009] In the monitor mounting device described above, the rotating part is a screw comprising a screw portion and a knob portion, and the screw portion is provided with a sliding portion that slides toward the knob portion when rotated in a first direction and slides toward the knob portion when rotated in the opposite direction to the first direction, and the sliding portion may cause the first stopper to come into contact with the first rotating cylinder and the second stopper to come into contact with the second rotating cylinder.

[0010] In the above-described monitor mounting device, the first stopper slides between the rotating part and the first rotating cylinder, and the second stopper slides between the rotating part and the second rotating cylinder. When the rotating part is rotated in the first direction, the first stopper slides in the direction of the first rotating cylinder and makes contact, and the second stopper slides in the direction of the second rotating cylinder and makes contact. When the rotating part is rotated in the second direction opposite to the first direction, the first stopper slides in the direction of the rotating part to release contact with the first rotating cylinder, and the second stopper slides in the direction of the rotating part to release contact with the second rotating cylinder.

[0011] In the above-described monitor mounting device, the first rotating cylinder is provided with indicator information that can identify the type of vehicle, such that various types of vehicles are in a predetermined relationship with the corresponding through-holes, and the housing includes an indicator display unit configured such that one of the indicator information is exposed in accordance with the rotation of the first rotating cylinder, and when the indicator information indicating the vehicle type to which the monitor mounting device is mounted is displayed on the indicator display unit, the through-hole corresponding to that vehicle type may face the opening.

[0012] In the above-described monitor mounting device, an interlocking mechanism may be provided that rotates the other rotating cylinder in the opposite direction to the rotation of the first or second rotating cylinder in conjunction with the rotation of the first or second rotating cylinder.

[0013] In the above-described monitor mounting device, the monitor mounting device may be mounted to the vehicle in such a manner that it is sandwiched between the headrest and the seat back, by inserting a support column for attaching the vehicle's headrest to the vehicle's seat back into the opening and the through-hole.

[0014] In the above-described monitor mounting device, the connection mechanism may be connected to the back of the monitor.

[0015] In the monitor mounting device described above, the first rotating cylinder and the second rotating cylinder are the same part, and the positions of the through holes in the first rotating cylinder and the second rotating cylinder may be determined such that when each of the multiple through holes provided in the first rotating cylinder is exposed from the first opening, the corresponding through holes provided in the second rotating cylinder are exposed from the second opening. [Effects of the Invention]

[0016] A monitor mounting device according to one aspect of the present invention comprises two rotating cylinders, each having multiple through-holes of a predetermined diameter. By rotating the rotating cylinders to expose the desired through-holes, the device can be mounted to accommodate stays of various diameters and distances between stays. Furthermore, the monitor mounting device is realized as a housing that incorporates integrally molded rotating cylinders, and is mounted to the vehicle by inserting the stays into the rotating cylinders. This provides a monitor mounting device with higher mounting strength than conventional devices. [Brief explanation of the drawing]

[0017] [Figure 1] (a) This is an external perspective view showing the monitor mounting device as seen from the top. (b) This is an external perspective view showing the monitor mounting device as seen from the bottom. [Figure 2] (a) A top view of the monitor mounting device. (b) A bottom view of the monitor mounting device. [Figure 3] (a) Front view of the monitor mounting device. (b) Rear view of the monitor mounting device. (c) Right side view of the monitor mounting device. [Figure 4] This is a disassembled perspective view of the monitor mounting device. [Figure 5] (a) A diagram showing an example of alignment of the monitor mounting device with respect to the bracket. (b) A diagram showing another example of alignment of the monitor mounting device with respect to the bracket. (c) A diagram showing yet another example of alignment of the monitor mounting device with respect to the bracket. [Figure 6](a) It is a diagram for explaining the attachment of the monitor attachment device to the stay. (b) It is a diagram showing the state where the monitor attachment device is attached to the stay of the vehicle. [Figure 7] (a) It is a cross-sectional view showing the state of the sliding part of the monitor attachment device before sliding. (b) It is a cross-sectional view showing the state of the sliding part of the monitor attachment device after sliding. (c) It is a cross-sectional view showing another configuration example of the sliding part of the monitor attachment device. [Figure 8] (a) It is a diagram showing that the first rotating cylinder and the second rotating cylinder are the same member. (b) - (d) It is a diagram showing that the corresponding through-holes in the first rotating cylinder and the second rotating cylinder are symmetrically exposed at the openings. [Figure 9] (a), (b) It is a diagram showing another example of the configuration of the indicator of the monitor attachment device. [Figure 10] (a) It is a diagram showing another example of the restraining part of the monitor attachment device, in a state where the rotating cylinder is not restrained. (b) It is a diagram showing another example of the restraining part of the monitor attachment device, in a state where the rotating cylinder is restrained. [Figure 11] (a) It is a front view showing an example of the internal configuration for rotating the rotating cylinders synchronously. (b) It is a top view showing an example of the internal configuration for rotating the rotating cylinders synchronously. [Figure 12] (a) It is a perspective view showing the state where a rubber member for anti-slip is inserted into the through-hole of the rotating cylinder. (b) It is a perspective view showing the state where the rubber member is removed from the through-hole of the rotating cylinder. (c) It is a cross-sectional view showing the state where the rubber member is inserted into the through-hole. [Figure 13] (a), (b) It is a diagram showing that the relative positional relationship of at least a part of the through-hole and the opening changes. [Figure 14] (a) It is a diagram showing that the relative positional relationship of at least a part of the through-hole and the opening changes. (b) It is a cross-sectional view of the same part. [Figure 15] Another example of the plan view of the monitor attachment device.

Embodiments for Carrying Out the Invention

[0018] ]Hereinafter, a monitor mounting device according to one embodiment of the present invention will be described in detail with reference to the drawings.

[0019] <Embodiment> The monitor mounting device 100 according to this embodiment is a device for mounting a monitor to the headrest portion of a vehicle. Specifically, the monitor mounting device 100 is a device for connecting a monitor while it is attached to the headrest stay (axis) that connects the back seat (backrest) and the headrest of the vehicle.

[0020] Figure 1(a) is a perspective view from above showing the monitor mounting device 100 attached to the monitor 10, and Figure 1(b) is a perspective view of the same state from below. As shown in Figures 1(a) and 1(b), the monitor mounting device 100 is attached to the back of the monitor 10.

[0021] Figure 2(a) is a top view (top view) of the monitor mounting device 100, and Figure 2(b) is a bottom view of the monitor mounting device 100. Figure 3(a) is a front view of the monitor mounting device 100, Figure 3(b) is a rear view of the monitor mounting device 100, and Figure 3(c) is a right side view of the monitor mounting device 100. The left side view of the monitor mounting device 100 is omitted as it is only a symmetrical representation of the right side view. Figure 4 is an exploded perspective view of the monitor mounting device 100. The exploded perspective view in Figure 4 is an exploded perspective view with its bottom surface facing upwards in the drawing. First, the structure of the monitor mounting device 100 will be explained using Figures 2 to 4.

[0022] As shown in Figure 4, the monitor mounting device 100 consists of a first housing 101 and a second housing 102 connected together, and includes a first rotating cylinder 120, a second rotating cylinder 121, a screw 130, a sliding part 140, a first stopper 150, and a second stopper 151 inside. The components of this device may be made of a resin material such as reinforced plastic, for example, but some or all of them may be made of metal components such as aluminum or stainless steel depending on the required strength, or they may be made of wood or the like if the required strength can be ensured.

[0023] As shown in Figure 4, the first housing 101 is a component that forms the bottom surface of the monitor mounting device 100, and may, for example, have a shape in which two plates are connected at approximately a right angle. That is, the first housing 101 may be L-shaped when viewed from the side. As shown in Figure 4, the first housing 101 is provided with a second opening 110b, a second opening 111b, and a third opening 135. Note that when there is no particular need to distinguish between the second opening 110b and the second opening 111b, they may be described as the second opening 110, the second opening 111, or simply as opening 110 and opening 111.

[0024] The second openings 110b and 111b are openings for exposing through holes provided in the first rotating cylinder 120 and the second opening 111b, respectively. The second opening 110b is shaped such that when a person rotates the first rotating cylinder 120 through the second opening 110b, each through hole is exposed at at least one position. Furthermore, the shapes of the second openings 110b and 111b are determined such that when the corresponding through holes in the first rotating cylinder 120 and the second rotating cylinder 121 are exposed, the distance between these through holes matches the distance between the stays of the vehicle to which the monitor mounting device 100 is to be attached. For example, the distance between through holes 122a-123a or the distance between through holes 122b-123b shown in Figures 2(a) and (b) may correspond to the distance between the stays.

[0025] As shown in Figure 2(b), the second opening 110b and the second opening 111b have symmetrical shapes.

[0026] The third opening 135 is a circular opening for exposing the knob portion 132 of the screw 130. The third opening 135 is wide enough to expose the knob portion 132 of the screw 130 so that a person can grasp and rotate the knob portion 132, but it is narrow enough not to cause the screw 130 to fall out. In other words, the inner diameter of the third opening 135 is shorter than the outermost diameter of the screw 130.

[0027] The second housing 102 is a housing to which the first housing 101 is attached, forming the external shape of the monitor mounting device 100. The first housing 101 may, for example, be screwed to the second housing 102, or it may be fixed in place by snap-fitting.

[0028] As shown in Figure 2(a), the second housing 102 includes a first opening 110a and a first opening 111a that open to the outside of the monitor mounting device 100.

[0029] The first opening 110a and the first opening 111a are openings for exposing through holes provided in the first rotating cylinder 120 and the first rotating cylinder 120, respectively. The first opening 110a is shaped such that when a person rotates the first rotating cylinder 120 through the first opening 110a, each through hole is exposed at at least one position. Furthermore, the shapes of the first opening 110a and the first opening 111a are determined such that when the corresponding through holes in the first rotating cylinder 120 and the second rotating cylinder 121 are exposed, the distance between the through holes matches the distance between the vehicle stays to which the monitor mounting device 100 is to be attached. As shown in Figure 2(a), the first opening 110a and the first opening 111a are symmetrical in shape. In addition, if there is no particular need to distinguish between the first opening 110a and the second opening 111a, they may be referred to as the first opening 110, the first opening 111, or simply as opening 110 and opening 111.

[0030] Therefore, through the first opening 110a, through hole 122, and second opening 110b, one through hole can be formed in the monitor mounting device 100 for inserting a stay (see Figure 6). Similarly, through the first opening 111a, through hole 123, and second opening 111b, another through hole can be formed in the monitor mounting device 100 for inserting a stay (see Figure 6). The stay of the vehicle's headrest will be inserted into the through holes formed in this manner.

[0031] As shown in Figure 4, the second housing 102 is provided with two cylindrical recesses 125 and recess 126. The first rotating cylinder 120 is inserted into recess 125. The inner wall of recess 125 is configured to be in close contact with the outer wall of the first rotating cylinder 120. Here, "the inner wall of recess 125 being in close contact with the outer wall of the first rotating cylinder 120" means that the inner wall of recess 125 is in contact with the inner wall of recess 125 to the extent that the first rotating cylinder 120 can rotate along the inner wall of recess 125, while holding the first rotating cylinder 120 so that it cannot move too much. Similarly, the second rotating cylinder 121 is inserted into recess 126. Like recess 125, the inner wall of recess 126 is configured to be in close contact with the outer wall of the second rotating cylinder 121. Although the first rotating cylinder 120 and the second rotating cylinder 121 do not have a cylindrical shaft or the like inserted into them, the fact that the recesses 125 and 126 are cylindrical allows the cylindrical first rotating cylinder 120 and the second rotating cylinder 121 to rotate around the center of the cylinder as an axis.

[0032] As shown in Figure 4, the first rotating cylinder 120 and the second rotating cylinder 121 are cylindrical members of the same size and are provided with multiple through holes for inserting stays. As shown in Figure 4, the first rotating cylinder 120 has four through holes 122a, 122b, 122c, and 122d that penetrate in the vertical direction of the drawing. Similarly, the second rotating cylinder 121 also has four through holes 123a, 123b, 123c, and 123d that penetrate in the vertical direction of the drawing. The through holes provided in the first rotating cylinder 120 may include at least through holes with a different inner diameter from the other through holes. Also, through holes corresponding to the through holes provided in the first rotating cylinder 120 are similarly provided in the second rotating cylinder 121. In the illustrated example, through hole 122a corresponds to through hole 123a, through hole 122b corresponds to through hole 123b, through hole 122c corresponds to through hole 123c, and through hole 122d corresponds to through hole 123d. This example shows a monitor mounting device 100 that can accommodate at least four different diameters and distances between stays by providing four through-holes (122, 123) in the rotating cylinders (120, 121). Note that, depending on the rotation of the cylinder, it may be possible to accommodate headrests of the same diameter but with different distances between stays using only one type of through-hole. The number of through-holes provided in the first rotating cylinder 120 and the second rotating cylinder 121 is not limited to four; at least two are sufficient, and five or more may be provided if there is space to do so. Note that if there is no need to distinguish between through-holes 122a, 122b, 122c, and 122d, they may be referred to as through-hole 122. Similarly, if there is no need to distinguish between through-holes 123a, 123b, 123c, and 123d, they may be referred to as through-hole 123.

[0033] A first stopper 150 and a second stopper 151 are inserted into the groove between recess 125 and recess 126. Specifically, the first stopper 150 is located between the first rotating cylinder 120 and the second stopper 151, and the second stopper 151 is located between the second rotating cylinder 121 and the first stopper 150.

[0034] The screw 130 consists of a knob portion 132 and a threaded portion 131. As mentioned above, the knob portion 132 is exposed from the third opening 135. The sliding portion 140 is screwed to the threaded portion 131. In the example shown in Figure 4, the rotation axis of the screw 130, the rotation axis of the first rotating cylinder 120, and the rotation axis of the second rotating cylinder 121 are parallel to each other.

[0035] The sliding part 140 is a conical member having a threaded through-hole inside. The sliding part 140 may also have a shape in which a conical member with a through-hole and a cylindrical member are connected. The threaded portion 131 of the screw 130 is inserted into the through-hole of the sliding part 140 and fastened with a screw. The sliding part 140 moves along the threaded portion 131 in accordance with the rotational direction of the screw 130.

[0036] The screw 130 and the sliding part 140 that is screwed to the screw 130 are held in place by the first stopper 150 and the second stopper 151.

[0037] In other words, the first stopper 150, the second stopper 151, the screw 130, and the sliding part 140 are inserted into the groove 160 between the recesses 125 and 126, with the first stopper 150 and the second stopper 151 sandwiching the screw 130, which is attached to the screw portion 131 of the sliding part 140.

[0038] Furthermore, the first rotating cylinder 120, the second rotating cylinder 121, the first stopper 150, and the second stopper 151 are not fixed to the second housing 102 by screws or the like, but are simply inserted (placed) there, and are supported by the mutual contact between the ribs formed inside the second housing 102 and the first housing 101, and between the components themselves.

[0039] As shown in Figure 3(b), the monitor mounting device 100 is provided with a mounting mechanism 301 for attaching the monitor mounting device 100 to the back of the monitor 10. The mounting mechanism 301 can be implemented by any mechanism that can attach the monitor mounting device 100 to the monitor 10, but one example is mounting using bidirectional screws. The mounting mechanism 301 should be such that the monitor 10 is securely connected to the monitor mounting device 100 when it is installed in a vehicle and in operation. In the illustrated example, the mounting mechanism 301 is implemented as a screw hole for passing screws to attach the monitor mounting device 100 to the monitor 10.

[0040] Next, Figures 5 and 6 will be used to explain how to attach the monitor mounting device 100 to the bracket.

[0041] Figure 5 is a diagram illustrating the method for determining which through-holes to expose from the first openings 110a and 111a in the monitor mounting device 100. As shown in Figure 5(a), the first opening 110a is provided with an indicator section 501 for aligning which through-hole to expose. As shown in Figure 5(a), the indicator section 501 is shown with the indicators A, B, C, and D. The first rotating cylinder 120 (Figure 5 shows an example of the first rotating cylinder 120, but the second rotating cylinder 121 is similarly marked) also has the indicators A, B, C, and D printed (or stamped) opposite to each indicator. By aligning the indicators shown on the indicator section 501 with the same indicators shown in the figure, it is possible to align the through-holes corresponding to the diameter of the stay to be mounted and the distance between the stays.

[0042] Figure 5(a) shows an example of aligning the printed indicator 502 ("A" indicator) which is aligned with the through hole 122 provided in the rotating cylinder, with the "A" indicator shown on the indicator part 501. In this state, the monitor mounting device 100 can be attached to the bracket by inserting the bracket of the vehicle corresponding to the through hole 122. In this case, it means that it is ready to be attached to the headrest of the vehicle corresponding to indicator A.

[0043] Furthermore, Figure 5(b) shows an example of aligning the indicator 502b ("D" indicator) printed on the rotating cylinder with the "D" indicator shown on the indicator part 501. On the other hand, Figure 5(c) shows an example of aligning the indicator 502c ("D" indicator) printed on the rotating cylinder with a different "D" indicator shown on the indicator part 501 than the "D" in Figure 5(b). In the cases of Figures 5(b) and 5(c), it means that the monitor can be attached to the headrest of the vehicle corresponding to indicator "D". Depending on the through-hole, there may be two positions within the opening 111 (110) that match the distance between the stays. In this case, it is possible to choose whether to place the monitor 10 closer to the headrest or further away. Alternatively, by selecting the position of the through-hole according to the thickness of the headrest, it is possible to make it easier to attach the monitor mounting device 100 to the stay. As shown in Figures 5(b) and 5(c), if the distance between stays can be secured at two positions within the opening 111(110), two identical indicators (indicators B, C, and D in the illustrated example) may be shown on the housing side.

[0044] In this manner, the left and right rotating cylinders are rotated and fixed in the desired position, and the monitor mounting device 100 is installed as shown in Figure 6. The method for fixing the rotating cylinders will be described later using Figure 7.

[0045] As shown in Figure 6(a), the through holes 122 and 123 are aligned with the specifications of the vehicle's headrest 50, and the stay 51a is inserted into the through hole 122 exposed in the first opening 110a, and the stay 51b is inserted into the through hole 123 exposed in the first opening 111a. Then, the stay 51a, which has the monitor mounting device 100 through it, is inserted into the stay insertion opening 53a provided in the vehicle's back seat 52, and the stay 51b, which has the monitor mounting device 100 through it, is inserted into the stay insertion opening 53b.

[0046] As a result, as shown in Figure 6(b), the monitor mounting device 100 can be attached to the stay 51 by sandwiching it between the vehicle's back seat 52 and headrest 50. Then, the monitor 10 can be attached to the monitor mounting device 100 fixed to the stay 51, and information can be provided to passengers sitting in the rear seats of the vehicle via the monitor 10. Note that the left side of Figure 6(b) is the rear seat side.

[0047] Next, we will explain the mechanism for fixing the rotating cylinder using Figure 7.

[0048] Figures 7(a) and 7(b) are longitudinal cross-sectional views of the monitor mounting device 100, showing the cross-sectional view when the center of the threaded portion 131 of the screw 130 is cut. In Figures 7(a) and 7(b), the through holes 122 and 123 that may be shown in the first rotating cylinder 120 and the second rotating cylinder 121 are omitted.

[0049] As mentioned above, and as shown in Figure 7(a), the member consisting of a screw 130 comprising a threaded portion 131 and a knob portion 132, and a sliding portion 140 fastened to the screw 130, is sandwiched between the first stopper 150 and the second stopper 151 and provided between the first rotating cylinder 120 and the second rotating cylinder 121. As shown in Figure 7(a), the screw 130 is sandwiched in the vertical direction of the paper by the first housing 101 and the first stopper 150 and the second stopper 151. Therefore, although the screw 130 can perform rotational motion by pinching and rotating the knob portion 132, it cannot move in the vertical direction. In the state shown in Figure 7(a) (where the sliding portion 140 is on the second housing 102 side), the first stopper 150 does not come into contact with the first rotating cylinder 120, and a small gap exists between them. Similarly, the second stopper 151 does not come into contact with the second rotating cylinder 121, and a small gap exists between the second stopper 151 and the second rotating cylinder 121. Therefore, the first rotating cylinder 120 and the second rotating cylinder 121 are in a state where they can rotate.

[0050] As shown in the figure, the first stopper 150 and the second stopper 151 are provided with inclined portions 170 that follow the inclination of the conical portion of the sliding portion 140. The conical portion of the sliding portion 140 and the inclined portions 170 of the first stopper 150 and the second stopper 151 allow them to slide against each other along the inclination of their contact surfaces.

[0051] Figure 7(b) shows the screw 130 in a rotated state. The threads of the screw portion 131 of the screw 130 are formed so that when a person rotates the screw 130 in a first direction, the sliding portion 140 slides toward the knob portion 132 (downward in the plane of the paper in Figure 7(b)). As shown in Figure 4, the sliding portion 140 has a notch (groove) in a part of it, and the second housing 102 is provided with a rib that fits into the notch. This rib fits into the notch of the sliding portion 140, preventing the sliding portion 140 from rotating in conjunction with the rotation of the screw 130, and allowing the sliding portion 140 to slide along the threads of the screw portion 131. As the sliding part 140 slides toward the knob part 132, it comes into contact with the first stopper 150 and the second stopper 151 at the inclined part 170, causing the first stopper 150 to slide toward the first rotating cylinder 120 and the second stopper 151 to slide toward the second rotating cylinder 121. This allows the first stopper 150 to come into contact with the first rotating cylinder 120, thereby suppressing the rotation of the first rotating cylinder 120. Similarly, the second stopper 151 can come into contact with the second rotating cylinder 121, thereby suppressing the rotation of the second rotating cylinder 121.

[0052] On the other hand, by rotating the screw 130 in a second direction opposite to the first direction, the sliding part 140 slides in a direction away from the knob part 132 (upwards in the plane of the paper in Figure 7). As a result, the first stopper 150 can be separated from the first rotating cylinder 120, and the restraint on the rotation of the first rotating cylinder 120 can be released. Similarly, the second stopper 151 can be separated from the second rotating cylinder 121, and the restraint on the rotation of the second rotating cylinder 121 can be released. In this embodiment, the first stopper 150, the screw 130, and the second stopper 151 can form a restraining part that restrains the rotation of the first rotating cylinder 120 and the second rotating cylinder 121.

[0053] Figure 7(c) shows a different configuration from that shown in Figure 7(a). As can be seen by comparing it with Figure 7(a), it shows an example where the orientation of the sliding part 140 is reversed in the vertical direction of the paper compared to Figure 7(a). Even with this structure, similar to Figure 7(a), the sliding part 140 moves up and down in accordance with the direction of rotation of the screw 130, allowing the first stopper 150 and the second stopper 151 to slide in the horizontal direction of the paper. This pushes the first stopper 150 toward the first rotating cylinder 120, causing the first stopper 150 to come into contact with the first rotating cylinder 120 and thus preventing the rotation of the first rotating cylinder 120. Furthermore, by rotating the screw 130 in the opposite direction, the contact between the first stopper 150 and the first rotating cylinder 120 and the second rotating cylinder 121, respectively, is loosened, allowing both rotating cylinders 120 and 121 to be rotated again by a person.

[0054] Figure 8 is a schematic conceptual diagram showing through holes in the first rotating cylinder 120 and the second rotating cylinder 121 according to this embodiment. As shown in Figure 8(a), the first rotating cylinder 120 and the second rotating cylinder 121 are components of exactly the same shape. By using the exact same components for the first rotating cylinder 120 and the second rotating cylinder 121, the manufacturing cost of the monitor mounting device 100 can be reduced compared to the case where different components are used for the first rotating cylinder 120 and the second rotating cylinder 121.

[0055] Figures 8(b) to 8(d) are schematic diagrams showing that through holes in the first rotating cylinder 120 and the second rotating cylinder 121 are correspondingly exposed symmetrically from the openings. In Figures 8(b) to 8(d), the parts of the first rotating cylinder 120, the second rotating cylinder 121, and the through holes 122 and 123 that are not exposed from the openings 110b and 111b should be shown with dotted lines as they are not normally visible, but here they are shown with solid lines for clarity. Figure 8(b) shows an example where the through hole 122c of the first rotating cylinder 120 is exposed from the opening 110b, and the through hole 123c is exposed from the opening 111b. In the state shown in Figure 8(b), the first rotating cylinder 120 and the second rotating cylinder 121 are not symmetrical with respect to each other, but the through hole 122c and its corresponding through hole 123c are exposed from the corresponding openings 110b and 111b in a symmetrical manner.

[0056] Figure 8(c) shows an example where the through-hole 122a is exposed from the opening 110b, and the through-hole 123a corresponding to the through-hole 122a is exposed from the opening 111b. In Figure 8(c) as well, the positions of the through-holes 122a (123a) appearing relative to the openings 110b (111b) can be adjusted so that they appear in symmetrical positions in the left-right direction of the paper by adjusting the rotation of the rotating cylinder. Similarly, Figure 8(d) shows an example where the through-hole 122b is exposed from the opening 110b, and the through-hole 123b corresponding to the through-hole 122b is exposed from the opening 111b. In Figure 8(d) as well, the positions of the through-holes 122b (123b) appearing relative to the openings 110b (111b) can be adjusted so that they appear in symmetrical positions in the left-right direction of the paper by adjusting the rotation of the rotating cylinder.

[0057] Each through-hole moves along a concentric circle centered on the center of the rotating cylinder. Therefore, if openings 110b and 111b are symmetrical with respect to the center of the first rotating cylinder 120 and the center of the second rotating cylinder 121, respectively (symmetrical with respect to the center of the monitor mounting device 100 in the left-right direction of the paper in Figure 8), there will always be a position where the corresponding through-holes are exposed in a symmetrical manner on both sides. Thus, even if the first rotating cylinder 120 and the second rotating cylinder 121 are made of the same material, a through-hole in the other rotating cylinder that corresponds to a through-hole in one rotating cylinder exposed from one opening can be exposed from the other opening.

[0058] <Summary> As described above, the monitor mounting device 100 has a rotating cylinder inside with through holes of various diameters, and by rotating the rotating cylinder, the through holes are switched and exposed from the opening, thereby accommodating stays of various diameters. Furthermore, it is equipped with two rotating cylinders, and the openings and through holes exposed from the openings of the left and right rotating cylinders are arranged so that the distance between the through holes is different, so that the monitor mounting device 100 can be attached to stays that accommodate various distances between stays. In addition, since the monitor mounting device 100 is attached to the headrest by inserting the stay into the through holes 122 and 123 exposed in the monitor mounting device 100, the monitor mounting device 100 will not come off the stay of the headrest.

[0059] <Supplement> While one example configuration of the monitor mounting device 100 according to the present invention has been shown in the above embodiment, the embodiments of the monitor mounting device 100 according to the present invention are not limited thereto. Modifications thereof will be described below.

[0060] (1) In the above embodiment, the method for aligning the through-hole of the rotating cylinder was explained using Figure 5. However, the method for setting the indicator is not limited to the example shown in Figure 5. Other methods may be used as long as they can achieve alignment of the through-hole of the rotating cylinder. An example of another method is shown in Figure 9.

[0061] Figure 9 shows an example where, unlike the configuration shown in Figure 5 where the indicator was printed on the housing, the indicator printed on the rotating cylinder is exposed as the rotating cylinder rotates, thereby exposing the corresponding through hole to the opening. Figure 9(a) shows an example where the desired indicator 902 printed on the rotating cylinder is exposed from the indicator display unit 901, thereby exposing the desired through hole 122 from the opening 110 (111), allowing the stay 51 to be inserted. In the example in Figure 9(a), the indicator "B" is shown as the indicator 902 printed on the rotating cylinder. Therefore, in this case, it can be attached to the headrest corresponding to indicator "B". Figure 9(b) shows another example where the indicator "D" is shown as the indicator 902. Therefore, in this case, it can be attached to the headrest corresponding to indicator "D". The indicator and indicator unit for determining which through hole to expose can also be realized by such a configuration.

[0062] (2) In the above embodiments, a configuration for suppressing the rotation of the rotating cylinder was described using the configurations shown in Figures 7(a) and (b), or the configuration shown in Figure 7(c). However, the structure for suppressing the rotation of the rotating cylinder is not limited to these configurations. For example, if it is possible to switch between rotation and non-rotation of the rotating cylinder by some mechanism such as a latch that engages with a groove, the configuration is not limited to the configurations shown in the above embodiments. For example, the rotation suppression mechanism for the rotating cylinder may be realized by the configurations shown in Figures 10(a) and (b). Figure 10(a) shows the state in which the rotation of the rotating cylinder is not suppressed, and Figure 10(b) shows the state in which the rotation of the rotating cylinder is not suppressed. As shown in Figures 10(a) and (b), the rotation suppression mechanism is a configuration in which a rotating body having blades 1010 and blades 1020 is fixed to a screw 130, instead of the first stopper 150, second stopper 151, and sliding part 140 shown in the above embodiments. By rotating the screw 130 in the first direction, blades 1010 and 1020 rotate together, changing from the state shown in Figure 10(a) to the state shown in Figure 10(b), where blade 1010 comes into contact with the first rotating cylinder 120 and blade 1020 comes into contact with the second rotating cylinder 121. This creates friction at the contact points between blades 1010 and 1020, thereby creating a configuration that suppresses the rotation of both rotating cylinders. By rotating the screw 130 in the second direction, opposite to the first direction, the contact between blades 1010 and 1020 and the rotating cylinders is released, allowing the rotating cylinders to rotate.

[0063] (3) In the above embodiment, both the first rotating cylinder 120 and the second rotating cylinder 121 are aligned by a person rotating them with their fingers through the corresponding openings 110 and 111. However, aligning both rotating cylinders is cumbersome for a person. Therefore, the monitor mounting device 100 may be configured such that aligning one rotating cylinder completes the alignment of the other rotating cylinder.

[0064] Figure 11(a) shows an example of the internal configuration of the monitor mounting device 100, which is configured so that when one cylinder rotates, the other also rotates, as viewed from the back. Figure 11(b) shows an example of the internal configuration of the same monitor mounting device 100 as viewed from the top.

[0065] As shown in Figures 11(a) and 11(b), in addition to the configuration shown in the above embodiment, the monitor mounting device 100 may be equipped with a synchronous rotating shaft 1100. Although not shown in detail, the housing of the monitor mounting device 100 rotatably holds the synchronous rotating shaft 1100. Bevel gears 1101 and 1102 are provided at both ends of the synchronous rotating shaft 1100. A bevel gear 1120 is also provided on the first rotating cylinder 120 and is configured to engage with the bevel gear 1102 of the synchronous rotating shaft 1100. Similarly, a bevel gear 1121 is also provided on the second rotating cylinder 121 and is configured to engage with the bevel gear 1101 of the synchronous rotating shaft 1100.

[0066] In the example shown in Figure 11(b), the through-hole 122 provided in the first rotating cylinder 120 and the through-hole 123 provided in the second rotating cylinder 121 may be configured to be symmetrical with respect to a center line dividing the drawing in the vertical direction. That is, the first rotating cylinder 120 and the second rotating cylinder 121 may be symmetrical members as shown in Figure 11(b). Alternatively, as shown in the above embodiment, the through-holes may be positioned such that the through-hole 122 provided in the first rotating cylinder 120 and the through-hole 123 provided in the second rotating cylinder 121 are exposed from corresponding openings, and the same rotating cylinders may be used on both sides by searching for a positional arrangement that is linked by the rotation of the synchronous rotating shaft 1100.

[0067] With this configuration, if a person rotates one of the rotating cylinders through the opening, that rotation will stimulate the rotation of the synchronous rotating shaft, causing the other rotating cylinder to rotate symmetrically in the opposite direction. Therefore, once the positioning of one rotating cylinder is complete, the positioning of the other rotating cylinder can also be completed.

[0068] The monitor mounting device 100 may have the configuration shown in Figures 11(a) and (b).

[0069] (4) In the above embodiment, a rubber member for anti-slip purposes may be provided in the through-hole exposed from the opening. Figure 12(a) is a perspective view showing a state in which a rubber member 1301 for anti-slip purposes of the stay is provided in the through-hole exposed from the openings 110b and 111b of the monitor mounting device 100. Figure 12(b) shows a state in which the rubber member 1301 has been removed from the through-hole. As shown in Figure 12(b), the rubber member 1301 is a cylindrical member and is configured to be insertable into the through-hole having the smallest inner diameter, and is configured to be expandable by cutting out a part of it so that it can be inserted into the through-hole having the largest inner diameter and the stay can be inserted. As shown in Figure 12(b), the rubber member 1301 may have a handle on part of its edge to facilitate removal from the through-hole. Here, the rubber member 1301 is molded by cutting out a part of it so that it can be used with all through-holes, but a dedicated rubber member may be prepared for each through-hole.

[0070] Figure 12(c) is a cross-sectional view showing the monitor mounting device 100 with the rubber member 1301 inserted. As shown in Figure 12(c), the rubber member 1301 does not need to be inserted into the entire through hole, but only extends partway through. Therefore, as can be seen from Figure 12(c), the through hole may have a structure with a step for inserting the rubber member 1301. Of course, the rubber member 1301 may also have a length that spans the entire inner surface of the through hole (equivalent to the length of the through hole in the vertical direction of the drawing in Figure 12(c)). The presence of the rubber member 1301 helps to prevent the monitor mounting device 100 from shifting unnecessarily when it is attached to the vehicle's stay.

[0071] (5) Figures 13(a), (b), and 14(a) show that in the above embodiment, one of the through holes in the rotating cylinder changes its relative positional relationship with respect to a part of the opening (the solid line portion in the drawing). Figure 14(b) is a cross-sectional view of the monitor mounting device, and is a cross-sectional view obtained by cutting the opening in the vertical direction of the drawing in Figure 13(b). Figure 15 is a plan view of the monitor mounting device corresponding to Figure 14(b). [Explanation of Symbols]

[0072] 10 monitors 50 headrests 51, 51a, 51b stays 52 Backseat 100 Monitor mounting device 101 First enclosure 102 Second enclosure 110, 111 openings 110a, 111a 1st opening 110b, 111b 2nd opening 120 First Rotating Cylinder 121 Second Rotating Cylinder 122, 122a, 122b, 122c, 122d through hole 123, 123a, 123c, 123c, 123d through hole 130 screws 131 Screw part 132 Knob section 140 Sliding part 150 First Stopper 151 Second Stopper 501, 901 Index section 502, 502b, 502c, 902 indicators

Claims

1. A first rotating cylinder having multiple through holes of predetermined diameters, The second rotating cylinder is positioned at a predetermined distance from the first rotating cylinder, and each of the multiple through holes provided in the first rotating cylinder has a through hole that corresponds individually to it. A housing having a first opening facing at least one of the multiple through holes of the first rotating cylinder, and a second opening facing at least one of the multiple through holes of the second rotating cylinder that corresponds to the through hole of the first rotating cylinder facing the first opening, and which rotatably holds the first rotating cylinder and the second rotating cylinder, A connection mechanism for connecting to the monitor, A monitor mounting device for installing a monitor in a vehicle equipped with a monitor.

2. The housing includes a restraining mechanism that prevents the rotation of the first and second rotating cylinders. The monitor mounting device according to feature 1.

3. The aforementioned restraining unit is, A rotating part that rotates on an axis parallel to the rotation axis of the first rotating cylinder and the second rotating cylinder, As the rotating part rotates, the first stopper changes from a non-contact state to a contact state with the first rotating cylinder, The system includes a second stopper that moves from a non-contact state to a contact state with the second rotating cylinder as the rotating part rotates, The restraining portion prevents the rotation of the first and second rotating cylinders by bringing the first stopper into contact with the first rotating cylinder and the second stopper into contact with the second rotating cylinder, and is provided between the first and second rotating cylinders. The monitor mounting device according to feature 2.

4. The aforementioned rotating part is a screw comprising a screw portion and a knob portion. The screw portion is provided with a sliding portion that slides toward the knob portion when rotated in a first direction, and slides toward the knob portion when rotated in the opposite direction to the first direction. The sliding of the aforementioned sliding part causes the first stopper to come into contact with the first rotating cylinder, and the second stopper to come into contact with the second rotating cylinder. The monitor mounting device according to feature 3.

5. The first stopper slides between the rotating part and the first rotating cylinder. The second stopper slides between the rotating part and the second rotating cylinder. When the rotating part is rotated in the first direction, the first stopper slides and makes contact with the first rotating cylinder, and the second stopper slides and makes contact with the second rotating cylinder. When the rotating part is rotated in a second direction opposite to the first direction, the first stopper slides in the direction of the rotating part to release contact with the first rotating cylinder, and the second stopper slides in the direction of the rotating part to release contact with the second rotating cylinder. The monitor mounting device according to feature 4.

6. The first rotating cylinder is provided with indicator information that can identify the type of vehicle, such that various types of vehicles have a predetermined relationship with the corresponding through-holes. The housing includes an indicator display unit configured such that one of the indicator information is exposed in accordance with the rotation of the first rotating cylinder, When indicator information indicating the vehicle model to which the monitor mounting device is installed is displayed on the indicator display unit, the through hole corresponding to that vehicle model faces the opening. The monitor mounting device according to feature 1.

7. The system includes an interlocking mechanism that, in conjunction with the rotation of the first or second rotating cylinder, rotates the other rotating cylinder in the opposite direction to the rotation of the first or second rotating cylinder. The monitor mounting device according to feature 1.

8. The monitor mounting device is attached to the vehicle in such a manner that it is sandwiched between the headrest and the seat back, by inserting a support column for attaching the vehicle's headrest to the vehicle's seat back into the opening and the through hole. The monitor mounting device according to feature 1.

9. The connection mechanism connects to the back of the monitor. The monitor mounting device according to feature 1.

10. The first rotating cylinder and the second rotating cylinder are the same part, and the positions of the through holes in the first and second rotating cylinders are determined such that when each of the multiple through holes in the first rotating cylinder is exposed from the first opening, the corresponding through holes in the second rotating cylinder are exposed from the second opening. The monitor mounting device according to feature 1.

Images