Backboard connection structure

Abstract

To provide a backboard connection structure capable of achieving easy assembly and favorable connection to a connector of a relay.SOLUTION: This backboard connection structure includes a backboard 10 where a device side connector 15 is provided, and a base 50. The backboard 10 includes an extension part. The base 50 includes an energizing member that, while the backboard 10 is pressed toward the base 50, applies an energizing force to a second surface opposite to a first surface of the backboard 10 in a direction opposite to the direction where the backboard 10 is pressed, and a reception part 56 to which the extension part is inserted when the backboard 10 moves in a slide direction that is orthogonal to the width direction and the thickness direction of the backboard 10 while the backboard 10 is pressed toward the base 50. The energizing member applies the energizing force to the backboard 10 so that the backboard 10 is pressed to an inner surface of the reception part 56.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a backboard connection structure. [Background technology]

[0002] BACKGROUND ART Conventionally, with regard to a repeater for a fire alarm system, a structure is known in which the repeater can be easily attached to a base without using any tools (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2007-334592 Summary of the Invention [Problem to be solved by the invention]

[0004] When attaching a repeater to a repeater panel, it is necessary to both mechanically connect the repeater to the base and electrically connect the repeater to the equipment's board, etc. In conventional configurations, if there is an error in the connector position due to manufacturing errors or dimensional errors of parts, the connector cannot be properly connected when connecting the repeater's connector to the equipment's connector. It is also desirable that the board (backboard) on which the equipment's connector is mounted can be easily attached to the base.

[0005] Therefore, the present invention has been made in consideration of the above points, and aims to provide a backboard connection structure that allows the backboard to be attached with simple work and that allows the connector of the repeater to be connected well. [Means for solving the problem]

[0006] One form of backboard connection structure of the present invention comprises a backboard having an equipment-side connector on a first surface to which a repeater-side connector provided on a repeater is connected, and a base to which the backboard is removably attached, wherein the backboard has an extension portion extending in the width direction of the backboard, and the base has a biasing member that applies a biasing force to a second surface of the backboard opposite the first surface in a direction opposite to the direction in which the backboard is pressed when the backboard is pressed against the base, and a receiving portion into which the extension portion is inserted when the backboard moves in a sliding direction perpendicular to the width direction and perpendicular to the thickness direction of the backboard when the backboard is pressed against the base, and the biasing member applies the biasing force to the backboard so that the backboard is pressed against the inner surface of the receiving portion.

[0007] The extension portion may have a through hole that penetrates the backboard or a recess that is recessed in the thickness direction of the backboard, and the receiving portion may have a locking protrusion that protrudes toward the backboard so that it can fit into the through hole or the recess.

[0008] The extension portions include a right-side extension portion formed on the right side of the backboard in the width direction, and a left-side extension portion formed on the left side of the backboard in the width direction, and the base has, as the receiving portions, a right-side receiving portion that receives the right-side extension portion and a left-side receiving portion that receives the left-side extension portion, and the locking protrusion may be formed on one or both of the right-side receiving portion and the left-side receiving portion.

[0009] The backboard may be held by the base in a state in which it is movable in a thickness direction of the backboard, a width direction of the backboard, and the sliding direction.

[0010] The base may be composed of a plurality of repeater base units, each of which has the receiving portion and a board placement recess extending parallel to the sliding direction of the backboard and in which the backboard is placed, and when the plurality of repeater base units are connected to each other, the plurality of board placement recesses may be connected to form a single board placement portion, and the backboard may be attached to the board placement portion.

[0011] The receiving portion of each repeater base unit is formed with a locking protrusion that protrudes toward the backboard, and the backboard has a first extension portion that is inserted into the receiving portion of a first repeater base unit among the multiple repeater base units, and a second extension portion that is formed at a position away from the first extension portion in the sliding direction of the backboard and is inserted into the receiving portion of a second repeater base unit, and the first extension portion may be formed with a through hole or recess into which the locking protrusion of the first repeater base unit fits, and the second extension portion may be formed with a protruding piece that engages with the locking protrusion of the second repeater base unit.

[0012] The base may be made up of a plurality of repeater base units, and each repeater base unit may have the receiving portion and a board end receiving portion that receives an end of the backboard. [Effects of the Invention]

[0013] The present invention has the effect of providing a backboard connection structure that allows the backboard to be attached with a simple operation and allows the connector of the repeater to be connected well. [Brief explanation of the drawings]

[0014] [Figure 1] FIG. [Figure 2] FIG. 2 is a perspective view showing a repeater, a backboard, and a base. [Figure 3] FIG. [Figure 4]FIG. [Figure 5] FIG. 2 is a perspective view of the relay base unit as seen from diagonally above. [Figure 6] FIG. 2 is a perspective view of the relay base unit as seen from diagonally below. [Figure 7] FIG. 2 is a front view of the repeater base unit. [Figure 8] FIG. 2 is a perspective view showing a receiving portion and its surroundings. [Figure 9] FIG. 10 is a perspective view showing a state in which the backboard is attached to the base. [Figure 10] FIG. 10 is a perspective view showing a state in which the backboard is attached to the base. [Figure 11] FIG. 10 is a perspective view showing a state in which the backboard is attached to the base. [Figure 12] FIG. 10 is a perspective view showing a state in which the backboard is attached to the base. [Figure 13] 10A and 10B are schematic diagrams for explaining the positional relationship between a through hole and a locking protrusion, and the positional relationship between a protruding piece and the locking protrusion. [Figure 14] 10 is a cross-sectional view schematically showing the relationship between the backboard and the locking protrusion when the backboard is attached to the base. FIG. [Figure 15] FIG. 10 is a perspective view showing another example of the base and backboard according to the present invention. [Figure 16] FIG. 10 is a perspective view showing still another example of the base and backboard according to the present invention. [Figure 17] FIG. 2 is a perspective view of the relay device as seen from the front side. [Figure 18] FIG. 2 is a perspective view of the repeater as seen from the rear side. [Figure 19] FIG. [Figure 20] FIG. 2 is a diagram showing the shape of a substrate in a plan view. [Figure 21] FIG. [Figure 22] FIG. 2 is a view of the first housing member as seen from the rear side. [Figure 23] 10 is a diagram illustrating the internal configuration of a side surface of a first housing member. FIG. [Figure 24] 10A and 10B are schematic diagrams showing modified examples of the support structure for the substrate. [Figure 25] FIG. 22 is a cross-sectional view taken along line AA in FIG. 21. [Figure 26] FIG. 2 is an enlarged view of a leaf spring and its surrounding structure. [Figure 27] FIG. 10 is a diagram schematically illustrating a substrate held by a pair of leaf springs. [Figure 28] 10 is a diagram schematically illustrating a state in which a force directed to the right as indicated by the white arrow is applied to the substrate, causing the substrate to move slightly to the right in the drawing. [Figure 29] FIG. 10 is a cross-sectional view showing a state in which the repeater is mounted on the backboard. DETAILED DESCRIPTION OF THE INVENTION

[0015] Fig. 1 is a perspective view of a repeater panel. Fig. 2 is a perspective view showing a repeater, a backboard, and a base. Fig. 3 is a perspective view of the backboard. Fig. 4 is a front view of the backboard.

[0016] In the following description, terms indicating directions such as "upper," "lower," "left," "right," "front," and "rear" are used to correspond to the directions of the components shown in the drawings, but these terms are not intended to limit the present invention. Regarding the correspondence between each direction in the drawings and directional terms in the present invention, the up-down direction in the drawings corresponds to the sliding direction of the backboard. The left-right direction corresponds to the width direction of the backboard. The front-rear direction corresponds to the connection direction of the repeater connector to the connector on the backboard, and the thickness direction of the backboard.

[0017] 1 and 2, the repeater panel S includes a repeater panel housing 1, a wiring duct 2, a backboard 10, a base 50, and a repeater 100. The repeater panel S is installed, for example, on a wall inside a building.

[0018] The repeater panel housing 1 is formed in a box shape and houses the wiring duct 2, backboard 10, base 50, and repeater 100. In this example, the repeater panel housing 1 has a housing main body 1a and a door 1b. The door 1b is provided so as to be able to open and close relative to the housing main body 1a. The wiring duct 2 houses various types of wiring.

[0019] The backboard 10 (FIG. 2) is a board to which a plurality of relays 100 are connected. In this embodiment, the backboard 10 is a board to which, as an example, five relays 100 can be connected. As shown in FIGS. 2 to 4, the backboard 10 has an elongated shape in this embodiment.

[0020] 3, the backboard 10 has a first surface 10a and a second surface 10b, and the first surface 10a is provided with a plurality of device-side connectors 15. Specifically, five device-side connectors 15 are provided at predetermined intervals along the extension direction of the backboard 10. The device-side connector 15 is a connector to which a repeater-side connector (described in detail later) provided in the repeater 100 is connected.

[0021] The upper and lower ends of the backboard 10 are provided with connectors 14-1 and 14-2, respectively, for connecting the backboard 10 to other boards (not shown) of the repeater panel. The circuit pattern of the backboard 10 is formed so that the various signal lines and power lines connected to the connectors 14-1 and 14-2 are connected in parallel to the respective device-side connectors 15. Therefore, signals can be transmitted and received in the same manner regardless of which of the multiple device-side connectors 15 the repeater 100 is connected to.

[0022] When the backboard 10 is attached to the base 50, the backboard 10 is not rigidly fixed to the base 50, but is held by the base 50 in a state in which it can move in the up-down, left-right and front-back directions.

[0023] (Backboard shape) As shown in Fig. 4, the backboard 10 includes a main body portion 11 and an extension portion 12. The main body portion 11 is a long, narrow region extending in the extension direction of the backboard 10. The extension portion 12 is a portion extending from the main body portion 11 in the width direction of the backboard 10.

[0024] In this embodiment, a pair of extension portions 12 is provided on both the left and right sides of the position where the device-side connector 15 is disposed. Specifically, a pair of left extension portion 12L-1 and right extension portion 12R-1, a pair of left extension portion 12L-2 and right extension portion 12R-2, a pair of left extension portion 12L-3 and right extension portion 12R-3, a pair of left extension portion 12L-4 and right extension portion 12R-4, and a pair of left extension portion 12L-5 and right extension portion 12R-5 are provided. Because the basic structure of each pair is the same, the pair of left extension portion 12L-1 and right extension portion 12R-1 will be described below as an example.

[0025] The left-side extending portion 12L-1 is formed on the left side in the width direction of the backboard 10, and extends leftward from the main body portion 11. The right-side extending portion 12R-1 is formed on the right side in the width direction of the backboard 10, and extends rightward from the main body portion 11.

[0026] A through-hole 12h is formed in the right-side extension portion 12R-1. The through-hole 12h is a hole that penetrates the backboard 10 in the thickness direction. The contour shape of the through-hole 12h may be any shape, but in this example, it is circular as an example. As will be described later, the through-hole 12h is a portion into which a protrusion formed on a part of the base 50 fits.

[0027] In addition to the left extending portion 12L-1 and the right extending portion 12R-1, a similar through hole 12h is also formed in the left extending portion 12L-5 and the right extending portion 12R-5 of the right extending portion 12R-5.

[0028] In this embodiment, the through hole 12h is illustrated, but instead of the through hole 12h, a recessed portion recessed in the thickness direction of the backboard 10 may be formed. In this embodiment, the through hole 12h is formed in only one of the pair of left and right extending portions 12, but the through hole or recessed portion may be formed in both extending portions.

[0029] (Extension without through-hole) Of the right-side extending portions 12R-1 to 12R-5, the intermediate right-side extending portions 12R-2 to 12R-4 are formed with protruding pieces 12g instead of through holes 12h. The protruding pieces 12g are formed to extend parallel to the extension direction of the backboard 10 as shown in Fig. 4. The tip of the protruding piece 12g is formed, for example, in a gently curved R-shape.

[0030] In the present invention, the through-holes 12h may be formed in all of the right-side extending portions 12R-1 to 12R-5. However, according to the configuration of the present embodiment, in which an extending portion (first extending portion) in which the through-holes 12h are formed and an extending portion (second extending portion) in which the protruding pieces 12g are formed are provided, it is possible to obtain an effect that the backboard 10 can be easily attached to the base 50. Details will be described later together with an explanation of the procedure for attaching the backboard 10.

[0031] The main body 11 also has an end 11 a that is received in a board end receiving portion 59 of the repeater base unit 51 .

[0032] (Base 50) 2, the base 50 is a component to which the backboard 10 is attached. The base 50 may be provided as a single component or may be composed of multiple components, but in this embodiment, the base 50 is composed of multiple repeater base units 51. All five repeater base units 51 are components of the same shape.

[0033] FIG. 5 is a perspective view of the repeater base unit as seen from diagonally above. FIG. 6 is a perspective view of the repeater base unit as seen from diagonally below. FIG. 7 is a front view of the repeater base unit. FIG. 8 is a perspective view showing the receiving section and its surroundings. As shown in FIGS. 5 and 6, the repeater base unit 51 has a main body section 55, a first connecting section 61, a second connecting section 62, and an attachment section 65. The repeater base unit 51 is, for example, a resin molded product. The repeater base unit 51 is configured to be connectable to other repeater base units 51.

[0034] 5, the main body 55 has a pair of receiving portions 56, a leaf spring 57, and a board end receiving portion 59. An opening 55h is formed in the front surface of the main body 55, into which a lock arm (described in detail below) of the repeater 100 is inserted.

[0035] The receiving portion 56 is a portion into which the extension portion 12 of the backboard 10 is inserted. Specifically, the receiving portion 56 includes a right receiving portion 56R and a left receiving portion 56L. The right receiving portion 56R and the left receiving portion 56L have the same configuration and are formed symmetrically, except for the presence or absence of a locking protrusion 56p (FIG. 8) described below. Taking the right receiving portion 56R as an example, the right receiving portion 56R has a wall 56a located on the front side of the repeater base unit 51, as shown in FIG. 8. A locking protrusion 56p is formed on the inner surface of the wall 56a.

[0036] The locking protrusion 56p is formed to protrude from the wall 56a. The locking protrusion 56p is formed to protrude toward the backboard 10 when the backboard 10 is attached to the base 50. In this example, the locking protrusion 56p has a cylindrical shape. The locking protrusion 56p has an outer shape that allows it to fit into the through-hole 12h of the backboard 10.

[0037] As an example, the locking protrusion 56p is provided to have a diameter sufficiently shorter than the inner diameter of the through hole 12h. "Sufficiently shorter than the inner diameter of the through hole 12h" means that there is a margin sufficient to allow the backboard 10 to move a predetermined distance in the vertical and horizontal directions when the locking protrusion 56p is inserted into the through hole 12h. This configuration achieves a floating structure, allowing the backboard 10 to move in the vertical and horizontal directions, thereby absorbing any positional error of the connector when connecting the connectors.

[0038] The leaf spring 57 (FIG. 5) is a biasing member that applies a biasing force to the backboard 10. The plate spring 57 is provided so as to be positioned in a board placement recess 58 formed in the main body 55 .

[0039] The board placement recess 58 is a strip-shaped area in which the backboard 10 is placed, and is formed to extend in the vertical direction of the main body 55. In the configuration of this embodiment, when a plurality of repeater base units 51 are connected to one another, a plurality of board placement recesses 58 are connected together to form one board placement section 53, as shown in FIG.

[0040] In this embodiment, the leaf springs 57 include a left leaf spring 57L-1, a right leaf spring 57R-1, a left leaf spring 57L-2, and a right leaf spring 57R-2. The left leaf spring 57L-1 extends leftward from the center of the main body 55, and the right leaf spring 57R-1 extends rightward from the center of the main body 55, with both leaf springs being formed symmetrically. The left leaf spring 57L-1 and the right leaf spring 57R-1 are provided above the receiving portion 56. The left leaf spring 57L-2 and the right leaf spring 57R-2 are provided below the receiving portion 56. The left leaf spring 57L-2 and the right leaf spring 57R-2 have the same shape as the left leaf spring 57L-1 and the right leaf spring 57R-1. The function of the leaf springs 57 will be described later along with the installation procedure for the backboard 10.

[0041] The board end receiving portion 59 (FIG. 5) is a portion that receives the end of the backboard 10. In this example, the board end receiving portion 59 is formed at the lower end of the main body portion 55. Specifically, the board end receiving portion 59 includes a left board end receiving portion 59L and a right board end receiving portion 59R.

[0042] As shown in FIG. 5, the first connecting portions 61 are formed on the upper surface of the main body 55. Specifically, one first connecting portion 61 is formed on the upper surface of the main body 55 in a position closer to the left, and another first connecting portion 61 is formed on the upper surface of the main body 55 in a position closer to the right. The first connecting portions 61 have a shape that can receive the second connecting portions 62, which will be described later. Specifically, the first connecting portion 61 has a protrusion-receiving recess 61a into which the protrusion 62p (FIG. 6) of the second connecting portion 62 is inserted. Due to this shape, the first connecting portion 61 is mechanically connected to the second connecting portion 62 of another repeater base unit 51.

[0043] 6, the second connecting portions 62 are formed on the underside of the main body portion 55. Specifically, one second connecting portion 62 is formed on the left side of the underside of the main body portion 55, and the other second connecting portion 62 is formed on the right side of the underside of the main body portion 55. The second connecting portion 62 has a protrusion 62p that is inserted into the first connecting portion 61. In this example, the protrusion 62p has a first portion 62p1 and a second portion 62p2.

[0044] The first portion 62p1 and the second portion 62p2 each have a shape like a cylindrical member cut in half with a hemispherical end. The first portion 62p1 and the second portion 62p2 are formed like leaf springs and are configured to fit into the recess 61a of the first connecting portion 61 when deformed to approach each other.

[0045] The attachment portions 65 are formed on both the left and right sides of the main body portion 55. The attachment portions 65 are formed with through holes 65h through which fasteners such as screws are passed.

[0046] Here, an example is given of a single repeater base unit 51 to which one repeater 100 is connected, but the repeater base unit is not limited to a single unit and may be configured for two or three or more units, and such repeater base units may be connected to each other to form a base.

[0047] (Backboard 10 installation procedure) The procedure for attaching the backboard 10 will be described with reference to Figures 9 to 12. Figures 9 to 12 are perspective views showing how the backboard is attached to the base.

[0048] First, to attach the backboard 10 to the base 50, as shown in Fig. 9(a), the worker moves the backboard 10 toward the base 50 from the front side as indicated by arrow A. As shown in Fig. 9(b), in this state where the backboard 10 is separated from the base 50, the leaf springs 57 protrude toward the backboard 10 side.

[0049] 10, when the backboard 10 is pressed against the base 50, the leaf spring 57 is deformed, and a biasing force is applied to the second surface 10b of the backboard 10. In other words, in this state, a biasing force is applied to the backboard 10 in the direction opposite to the direction in which the backboard 10 is pressed. In the state of FIG. 10, the extension portion 12 (FIG. 4) of the backboard 10 has not yet been inserted into the receiving portion 56 of the repeater base unit 51.

[0050] 11, the worker moves the backboard 10 along the sliding direction indicated by arrow B. Here, the "sliding direction" is a direction perpendicular to the width direction of the backboard 10 and perpendicular to the thickness direction of the backboard 10. Specifically, the backboard 10 moves in the sliding direction while being pressed against the base 50.

[0051] If the backboard 10 is simply moved in the sliding direction without being pressed against the base 50, the extension 12 (FIG. 4) will hit the wall 56a of the receiving portion 56, and the extension 12 will not be inserted into the receiving portion 56. However, by sliding the backboard 10 while pressing it against the base 50, the extension 12 will be inserted into the receiving portion 56. Here, as described above, the backboard 10 is provided with a plurality of extensions 12 (FIG. 3), and each extension 12 is inserted into the receiving portion 56 of the corresponding repeater base unit 51.

[0052] Fig. 13 is a schematic diagram for explaining the positional relationship between the through hole and the locking protrusion, and the positional relationship between the protruding piece and the locking protrusion, and Fig. 14 is a cross-sectional view showing the relationship between the backboard and the locking protrusion when the backboard is attached to the base.

[0053] When the backboard 10 is in the position shown in Figure 11, as shown in Figure 13, the locking protrusion 56p (the locking protrusion 56p of the first base 50 from the top in Figure 11) is located in a position such that it is located inside the through hole 12h, and the protruding piece 12g is located in a position to engage with the locking protrusion 56p (the locking protrusion 56p of the second base 50 from the top on the base 50).

[0054] In this embodiment, as described above, the backboard 10 is not rigidly fixed to the base 50. Therefore, here, the engagement of the protruding piece 12g with the locking protrusion 56p does not mean that the protruding piece 12g abuts against the locking protrusion 56p to prevent the backboard 10 from moving, but means that the protruding piece 12g is close to the locking protrusion 56p with a predetermined clearance between the protruding piece 12g and the locking protrusion 56p.

[0055] 12, when the backboard 10 is attached to the base 50, as can be seen from Fig. 14, the leaf spring 57 applies a biasing force to the backboard 10 in the direction of arrow C, and as a result, the backboard 10 is pushed, and the first surface 10a of the backboard 10 is pressed against the inner surface of the receiving portion 56. In this state, the locking protrusion 56p is inserted into the through-hole 12h.

[0056] The end 11a (FIG. 12) of the backboard 10 is received in the board end receiving portion 59 of the lowest of the five repeater base units 51. Because there is a predetermined clearance between the outer peripheral surface of the locking protrusion 56p and the inner peripheral surface of the through-hole 12h, in this state the backboard 10 can move up and down and left and right by the amount of this clearance.

[0057] By following the above-described series of steps, the worker can attach the backboard 10 to the base 50 without the need for complicated work such as screwing using tools. To remove the backboard 10, the worker simply follows the above-described steps in reverse. Furthermore, since the backboard 10 is held in a state where it can move in the up-down, left-right, and front-back directions relative to the base 50, the backboard 10 functions as a floating structure, and can effectively absorb errors in the position of the connectors when they are connected.

[0058] (Effect of backboard connection structure) As described above, according to the configuration of this embodiment, the backboard 10 can be installed with simple work, and since the backboard 10 is movable, when connecting the repeater side connector of the repeater 100 to the equipment side connector 15 of the backboard 10, errors are absorbed, making it easier to connect the connectors.

[0059] In addition, in the configuration of this embodiment, the position of the backboard 10 is determined by the locking protrusions 56p of the receiving portions 56 fitting into the through holes 12h. This configuration has the advantage of simplifying the structure compared to, for example, a configuration in which screws are passed through the through holes 12h.

[0060] Furthermore, in the configuration of this embodiment, the locking protrusion 56p is provided on one of the right receiving portion 56R and the left receiving portion 56L. This configuration has the advantage of making it easier to install the backboard 10 compared to a configuration in which the two left and right locking protrusions 56p are fitted into multiple through holes 12h. However, the present invention may also have a configuration in which the two left and right locking protrusions 56p are fitted into multiple through holes 12h, which has the advantage of being able to more accurately determine the position of the backboard 10.

[0061] In addition, in the configuration of this embodiment, a base 50 is configured in which a plurality of repeater base units 51 are connected to mount a plurality of repeater backboards 10. With this configuration, the number of repeater base units 51 can be changed to accommodate a desired number of repeaters 100, so there is no need to separately manufacture bases for, for example, one repeater, three repeaters, and five repeaters.

[0062] Furthermore, in the configuration of this embodiment, the repeater base unit 51 is provided with a board end receiving portion 59 that receives the end portion 11a of the backboard 10. With this configuration, the backboard 10 is supported more stably.

[0063] In the configuration of this embodiment, through holes 12h are not formed in all of the multiple extending portions 12, but protruding pieces 12g are formed in some of the extending portions 12. In the case of a backboard 10 in which through holes 12h are formed in all of the multiple extending portions 12, it is necessary to insert the locking protrusions 56p into each of the through holes 12h, which is expected to make the installation of the backboard 10 more time-consuming. In contrast, the configuration of this embodiment has the effect of simplifying the installation of the backboard 10.

[0064] In the configuration of this embodiment, the electrical connection (e.g., connection of a common line) is also completed when the repeater 100 is connected. As a result, the installation and removal of the repeater 100 and the connection / disconnection of the common line can be performed easily and reliably, thereby improving the reliability of the system.

[0065] Although one embodiment of the present invention has been described above with reference to the drawings, the present invention is not limited to the specific configuration described above. Fig. 15 is a perspective view showing another example of the base and backboard of the present invention. Fig. 16 is a perspective view showing yet another example of the base and backboard of the present invention.

[0066] The base 50A in FIG. 15 is composed of three repeater base units 51. The backboard 10A is formed shorter than the backboard 10 in FIG. 2. The backboard 10A can connect three repeaters 100 and is provided with three device-side connectors 15. Of the three extension portions 12, the upper and lower extension portions 12 are formed with through holes 12h. The middle extension portion 12 is formed with a protruding piece 12g instead of a through hole 12h.

[0067] In the configuration of FIG. 16, one repeater base unit 51 functions as a base. One repeater 100 can be connected to the backboard 10B, and one device-side connector 15 is provided. A through-hole 12h is formed in the extension 12. The backboard 10 also has an end 11a that is received in the board end receiving portion 59 of the repeater base unit 51. In the example of FIG. 16, a terminal block 14-3 is installed in the installation location of the connector 14-1. The present invention is not limited to the configuration of FIG. 16, and the connector 14-1 may be installed instead of the terminal block 14-3.

[0068] Although Figures 2 and 15 show examples in which the base is made up of multiple repeater base units 51, the base may also be provided as a single component in which parts corresponding to multiple repeater base units 51 are integrally formed.

[0069] In the above example, a configuration in which extension portions 12 are formed on both the left and right sides of the backboard 10 is shown, but the present invention can also be applied to backboards in which only a left extension portion or a right extension portion is formed.

[0070] Although the leaf spring 57 is exemplified as the biasing member, any other member that can apply a biasing force similar to that of the leaf spring 57 described above, such as a coil spring or a ball plunger, may be used.

[0071] (Structural features of the repeater 100) Next, the repeater 100 will be described. Fig. 17 is a perspective view of the repeater seen from the front side. Fig. 18 is a perspective view of the repeater seen from the rear side. Fig. 19 is an exploded perspective view of the repeater. Fig. 20 is a diagram showing the shape of the board in a plan view.

[0072] The repeater 100 is a device that functions as an interface between, for example, a smoke prevention and exhaust terminal and a receiver (control panel), and includes a board 110 and a housing 150, as shown in Fig. 19. The board 110 includes a board body 111, a repeater-side connector 113, and a terminal block 115.

[0073] The board body 111 is a circuit board of the repeater 100, and in this example is formed in a substantially rectangular shape. The board body 111 is provided with a repeater-side connector 113 and a terminal block 115.

[0074] The repeater side connector 113 is a connector that is connected to the device side connector 15 of the backboard 10. The repeater side connector 113 is provided near the outer periphery of the board main body 111. Specifically, the repeater side connector 113 is provided at a position that is on the rear side of the board main body 111 in the orientation shown in FIG. 19. The arrangement direction of the terminals of the repeater side connector 113 (the direction in which each terminal extends) is not perpendicular to the board main body 111 but is parallel to the board main body 111.

[0075] Terminal block 115 is a component that is connected to a terminal device. Terminal block 115 is provided on the side opposite to the side on which board main body 111 is provided. Specifically, in this example, terminal block 115 is provided at a position on the front side of board main body 111.

[0076] Notches 111a are formed at both widthwise ends of the board body 111. As shown in Figures 19 and 20, one notch 111a is formed on each widthwise side of the board 110. Specifically, the notch 111a is formed near a corner of the side of the board 110 that is closer to the repeater-side connector 113. The notch 111a is formed in an arc-shaped recess.

[0077] The board 110 is housed inside the housing 150. Specifically, as shown in Figures 17 and 18, the board 110 is housed inside the housing 150 in a state in which the terminal portion of the repeater-side connector 113 and the terminal portion of the terminal block 115 are exposed to the outside of the housing 150.

[0078] The substrate 110 is not rigidly fixed to the housing 150, but in this embodiment is housed within the housing 150 in a state in which it can move up and down, left and right, and front and back. In this way, the substrate 110 is held in a state in which it can move relative to the housing 150, thereby realizing a floating structure for the connector, and making it possible to effectively absorb errors in the position of the connector when connecting the connector. The structure for holding the substrate 110 in a movably state will be described with reference to other drawings.

[0079] (Casing 150) 19, the housing 150 has a first housing member 151 and a second housing member 161. The box-shaped housing 150 is formed by connecting the first housing member 151 and the second housing member 161 to each other.

[0080] Fig. 21 is a front view of the repeater. Fig. 22 is a view of the first housing member as seen from the rear side. Fig. 23 is a view for explaining the internal configuration of the side surface of the first housing member. As shown in Fig. 19, the first housing member 151 has an upper surface 152, a lower surface 153, a side surface 154, and a front surface 155.

[0081] A pair of lock arms 156 are formed on the upper surface 152. Similarly, a pair of lock arms 156 are formed on the lower surface 153.

[0082] 22 and 23, guide ribs 154a-1 and 154a-2 are formed on the inner surface of the side surface 154. The guide ribs 154a-1 and 154a-2 are structural parts that form the guide groove 154b. The substrate 110 is inserted into the guide groove 154b.

[0083] If the groove width d1 (FIG. 23) of the guide groove 154b is approximately the same size as the substrate 110 and there is no margin for the thickness of the substrate 110, the substrate 110 cannot move in the thickness direction (up and down direction) of the substrate. Therefore, in the configuration of this embodiment, the guide ribs 154a-1 and 154a-2 are formed so that the groove width d1 of the guide groove 154b in the thickness direction of the substrate is larger than the thickness of the substrate, specifically, so that the groove width d1 is larger than the thickness of the substrate by a predetermined clearance.

[0084] Furthermore, the guide ribs 154a-1 and 154a-2 are formed so that the groove width d1 of the guide groove 154b increases toward the side of the board 110 inserted into the guide groove 154b where the repeater-side connector 113 is provided (the rear side in the figure). With this configuration, the movable range of the board 110 on the repeater-side connector 113 side becomes wider when the board 110 is inserted into the guide groove 154b. This provides the effect of making it easier to connect the repeater-side connector 113 to the device-side connector 15.

[0085] If the movable range of the substrate 110 is too wide, the repeater-side connector 113 may not be supported in an appropriate position relative to the device-side connector 15, which may actually reduce the connectivity of the connectors. Therefore, it is preferable that the movable range of the substrate 110 be set appropriately taking into consideration the shape and size of the repeater-side connector 113. However, since the repeater-side connector 113 side of the substrate 110 is held by a leaf spring 165 as described below, the movable range of the substrate 110 may be determined by the shape of the leaf spring 165.

[0086] FIG. 24 is a schematic diagram showing a modified example of the support structure for the board. Compared with the positional errors of the connectors in the left-right and front-rear directions, the error in the up-down direction (board thickness direction) is small, and a mechanism for supporting the board 110 at a predetermined support position (specifically, the position on the board 110 where the repeater-side connector 113 faces the device-side connector 15) is not essential. However, as shown in FIG. 24, a support 166 may be provided that elastically supports the board 110 so that the board 110 is positioned at the predetermined support position. The support 166 is, for example, a leaf spring, but may also be a coil spring, ball plunger, or the like. With this configuration, the board 110, which is movable in the direction of arrow D, can be positioned at the predetermined support position.

[0087] Fig. 25 is a cross-sectional view taken along line AA in Fig. 21. Fig. 26 is an enlarged view of a leaf spring and its surrounding structure. Fig. 27 is a schematic diagram showing a board held by a pair of leaf springs. A pair of leaf springs 165 is provided on the second housing member 161 of the board 110. The pair of leaf springs 165 constitute an elastic support mechanism that supports both ends of the board 110. In this example, the leaf springs 165 are symmetrical in shape across the center line CL of the repeater 100, and are provided at symmetrical positions.

[0088] 26, the leaf spring 165 has an arm portion 165a and a claw portion 165b. The arm portion 165a is formed, for example, in a cantilever shape, and extends from a part of the second housing member 161. The arm portion 165a is made of an elastically deformable material.

[0089] The claw portion 165b is formed to protrude from a part of the arm portion 165a toward the substrate 110. Specifically, the claw portion 165b is a curved protrusion that protrudes toward the cutout portion 111a. When viewed in a plan view of the substrate 110, the claw portion 165b has an arc-shaped contour. The claw portion 165b may have, for example, a shape like a cylinder split in half along its axial direction, or may have a hemispherical shape.

[0090] As shown in FIG. 26, the contour shape of the protruding claw portion 165b and the contour shape of the notch portion 111a are both arc-shaped, and the radius of curvature R2 of the notch portion 111a is larger than the radius of curvature R1 of the claw portion 165b.

[0091] 19 again. When assembling the repeater 100, for example, the end of the board 110 on which the repeater-side connector 113 is provided is inserted into the second housing member 161, and then the end on which the terminal block 115 is provided is inserted into the first housing member 151. As described above, when the board 110 is housed in the housing 150, the board 110 can move in the up-down direction, the left-right direction, and the front-rear direction.

[0092] The reason why the substrate 110 can move in the vertical direction is that the groove width d1 of the guide groove 154b between the guide ribs 154a-1 and 154a-2 on the side surface 154 is larger than the thickness of the substrate 110, and the substrate 110 is not rigidly held by the guide ribs 154a-1 and 154a-2.

[0093] On the other hand, the reason why the board 110 is movable in the left-right and front-back directions is that, in the state shown in Fig. 25, a predetermined clearance is provided between the inner surface of the housing 150 and the outer periphery of the board 110. With this configuration, the board 110 is movable in the left-right and front-back directions by the amount of the clearance.

[0094] The fact that the repeater 100 is held by the housing 150 in a movable state in this manner is preferable because a floating structure is realized when connecting the repeater 100 to the backboard 10, allowing for a good connection of the connector. However, if the board 110 is stored in the housing 150 in a state where it is free to move without any restriction, for example, the board 110 may move to a position that is biased within its movable range, causing a problem in which the connector cannot be properly connected when connecting the board 110. From this perspective, in this embodiment, the board 110 is not rigidly fixed to the housing 150 but is supported at a predetermined position.

[0095] Specifically, a pair of leaf springs 165 fit into the notched portions 111a so as to sandwich the substrate 110 and elastically support the substrate 110 at a predetermined support position. More specifically, as shown in Figures 26 and 27(a), the substrate 110 is supported in a state in which the claw portions 165b of the leaf springs 165 are pressed into the notched portions 111a, and thereby the substrate 110 is positioned at the predetermined support position.

[0096] 27(b) shows, as an example, a state in which a downward force as indicated by the outline arrow is applied to the substrate 110, causing the substrate 110 to move slightly downward. In this state, as the substrate 110 moves, the claws 165b that had been pressing against the deepest position of the cutout 111a also move, resulting in the pair of leaf springs 165 being slightly spread apart.

[0097] 27(b), the claws 165b are not disengaged from the notches 111a and still elastically support the notches 111a. Therefore, a force (see the dashed white arrow) is applied to the substrate 110 in a direction that causes the substrate 110 to return to its original supporting position as shown in FIG. 27(a). This causes the substrate 110 to return to its original supporting position.

[0098] 28 is a diagram schematically illustrating a state in which a force in the right direction, as indicated by the white arrow, is applied to the substrate, causing the substrate to move slightly to the right in the drawing. Even when substrate 110 moves in the substrate width direction in this way, a force (see the broken white arrow) is applied to substrate 110 in a direction that returns substrate 110 to its original supporting position due to the action of leaf spring 165, and substrate 110 returns to its original supporting position.

[0099] (Installation of multiple repeaters 100 on the backboard 10) The procedure for mounting the repeater 100 configured as described above on the backboard 10 will be described with reference to Fig. 29. Fig. 29 is a cross-sectional view showing the state in which the repeater is mounted on the backboard.

[0100] To attach the repeater 100 to the backboard 10, the worker first positions the repeater 100 so that the repeater-side connector 113 faces the device-side connector 15, as shown in Figure 29(a). Next, the worker moves the repeater 100 in the connection direction indicated by arrow E toward the backboard 10 held by the base 50.

[0101] 29(b), when the repeater 100 moves in the direction of arrow E, the repeater-side connector 113 is inserted into the device-side connector 15. In the state of FIG. 29(b), the lock arm 156 fits into the opening 55h (FIG. 5) of the repeater base unit 51, and the repeater 100 is attached to the base 50.

[0102] With this configuration, compared to a configuration in which the backboard 10 is rigidly fixed, the backboard 10 and the device-side connector 15 are movable, so that positional errors of the connectors can be absorbed and the connectors can be connected properly.

[0103] The backboard 10 may be configured so that the repeater side connector 113 is connected to the device side connector 15 in the initial position of Figure 29(a) (the position where the backboard 10 abuts the inner surface of the receiving section 56 (see Figure 14)), but in this embodiment it is configured as follows: Specifically, as shown in Figure 29(b), the backboard 10 is configured so that the repeater side connector 113 is connected to the device side connector 15 in a position moved slightly rearward from the initial position of Figure 29(a) (a position away from the inner surface of the receiving section 56).

[0104] In this state, the backboard 10 is biased toward the repeater 100 by the force of the leaf spring 57. With this configuration, the connectors are connected in a state in which the device-side connector 15 is pressed toward the repeater-side connector 113 by the biasing force of the leaf spring 57, thereby enabling a better connection of the connectors. Furthermore, since the device-side connector 15 can move forward in this position, even if the mounting position of the repeater-side connector 113 is shifted forward from the desired position, the connectors are connected well while absorbing such positional error.

[0105] (Effect of repeater connection structure) In the configuration of this embodiment, the board 110 is movably placed inside the housing 150, and the board 110 is supported at a predetermined position by a pair of leaf springs 165, which are elastic support mechanisms. Therefore, even if an error occurs in the connector position when the repeater 100 is attached, the error can be absorbed and the connector can be connected satisfactorily.

[0106] Furthermore, since the board 110 is elastically supported by the leaf spring 165 and is allowed to move freely within a certain limit, the board 110 can move within the housing 150 within a certain limit, and the board 110 does not move excessively within the housing 150. Therefore, even if the repeater 100 is subjected to vibrations during transportation, for example, rattle of the board 110 is suppressed, and damage to the housing 150 and the board 110 is prevented.

[0107] 26, in this embodiment, the outline shape of the claw portion 165b and the outline shape of the notch portion 111a are both arc-shaped, and the radius of curvature R2 of the notch portion 111a is larger than the radius of curvature R1 of the claw portion. With this configuration, when the pair of leaf springs 165 sandwiches the substrate 110, the substrate 110 is supported at a predetermined support position as shown in FIG. 26, and when the substrate 110 moves back and forth, a force is generated in a direction that returns the substrate 110 to its original position. Therefore, the substrate 110 can be positioned at a predetermined position without using a complex support structure.

[0108] (Variation) In the above-described embodiment, the notch 111a formed as an arc-shaped recess is exemplified, but the notch may have any shape as long as the claw 165b of the leaf spring 165 fits into the notch and generates a biasing force in a direction returning the substrate 110 to its original supporting position as described above. The notch may be, for example, a V-shaped recess into which the claw 165b of the leaf spring 165 fits.

[0109] In the above-described embodiment, the base 50 is exemplified as being configured to hold the backboard 10 in a state in which it can move in all directions, including the up-down, left-right, and front-to-back directions, but the base 50 may also hold the backboard 10 in a state in which it can move only in the front-to-back direction, or it may hold the backboard 10 in a state in which it can move in one of the up-down and left-to-right directions in addition to the front-to-back direction.

[0110] In the above-described embodiment, a configuration in which guide ribs 154a-1 and guide ribs 154a-2 form guide groove 154b has been exemplified, but instead of two guide ribs, one guide rib may form the guide groove together with a part of housing 150.

[0111] The present invention has been described above using embodiments, but the technical scope of the present invention is not limited to the scope described in the above embodiments, and various modifications and changes are possible within the scope of the gist of the present invention. For example, all or part of the device can be configured by functionally or physically distributing or integrating any unit. Furthermore, new embodiments resulting from any combination of multiple embodiments are also included in the embodiments of the present invention. The effects of the new embodiments resulting from the combination also have the effects of the original embodiments. [Explanation of symbols]

[0112] 1 Repeater panel housing 1a Housing body 1b Door 10 Backboard 10a 1st page 10b 2nd side 11 Main body 11a End 12 Extension 12g protruding piece 12h through hole 14-1 Connector 14-2 Connector 14-3 Terminal block 15 Device side connector 50 base 51 Repeater base unit 53 Board placement section 55 Main body 55h opening 56 Reception Department 56a wall 56p Locking protrusion 57 Leaf spring 58 Board placement recess 59 Board end receiving section 61 1st connection part 61a Recess 62 2nd connection part 62p protrusion 62p1 Part 1 62p2 2nd part 65 Mounting part 65h through hole 100 Repeater 110 Substrate 111 Board body 111a Notch 113 Repeater side connector 115 Terminal block 150 cabinets 151 First housing member 152 Top surface 153 Bottom surface 154 Side 154a-1 Guide rib 154a-2 Guide rib 154b Guide groove 155 Front 156 Lock Arm 161 Second housing member 165 Leaf spring 165a Arm part 165b Claw part 166 Support S Repeater Panel

Claims

1. a backboard having a device-side connector provided on a first surface thereof to which a repeater-side connector provided on the repeater is connected; a base to which the backboard is removably attached; Equipped with The backboard has an extension portion extending in a width direction of the backboard, The base is a biasing member that applies a biasing force to a second surface of the backboard opposite to the first surface of the backboard in a direction opposite to the direction in which the backboard is pressed, while the backboard is pressed against the base; a receiving portion into which the extension portion is inserted when the backboard moves in a sliding direction perpendicular to the width direction and perpendicular to a thickness direction of the backboard while the backboard is pressed against the base; and The biasing member applies the biasing force to the backboard so that the backboard is pressed against the inner surface of the receiving portion. Backboard connection structure.

2. The extension portion has a through-hole penetrating the backboard or a recess recessed in a thickness direction of the backboard, The receiving portion is formed with a locking protrusion that protrudes toward the backboard so as to be able to fit into the through hole or the recess. The backboard connection structure according to claim 1 .

3. The extension portion includes: a right extension portion formed on the right side in the width direction of the backboard; a left extension portion formed on the left side in the width direction of the backboard; is provided, The base includes, as the receiving portion, a right receiving portion that receives the right extension portion; a left receiving portion that receives the left extension portion; and The locking projection is formed on one or both of the right receiving portion and the left receiving portion. The backboard connection structure according to claim 2 .

4. The backboard is The backboard is held by the base in a state in which it can move in the thickness direction of the backboard, the width direction of the backboard, and the sliding direction.

3. The backboard connection structure according to claim 1 or 2.

5. the base is comprised of a plurality of repeater base units; The repeater base unit includes: The receiving portion; a board placement recess extending parallel to the sliding direction of the backboard and in which the backboard is placed; and When the plurality of repeater base units are connected to each other, the plurality of board placement recesses are connected to form one board placement section, and the backboard is attached to the board placement section.

3. The backboard connection structure according to claim 1 or 2.

6. A locking projection is formed on the receiving portion of each relay base unit, the locking projection projecting toward the backboard side, The backboard is a first extending portion that is inserted into the receiving portion of a first relay base unit among the plurality of relay base units; a second extending portion formed at a position spaced apart from the first extending portion in the sliding direction of the backboard and inserted into the receiving portion of the second relay base unit; and the first extension portion is formed with a through hole or a recess into which the locking protrusion of the first relay base unit fits; The second extension portion is formed with a protruding piece that engages with the locking protrusion of the second relay base unit. The backboard connection structure according to claim 1 .

7. the base is comprised of a plurality of repeater base units; The repeater base unit includes: The receiving portion; a board end receiving portion that receives an end of the backboard; It has 3. The backboard connection structure according to claim 1 or 2.

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