Unit apparatus

Abstract

To make it possible to suppress the influence of a power supply on an electrical signal.SOLUTION: In a unit apparatus 10 in which a one-side connector 310 is provided on one side of a unit housing 12 and an other-side connector 312 is provided on the other side opposite to the one side, and in an arrangement state 300 in which a plurality of unit housings 12 are arranged adjacent to each other, the one-side connector 310 of one unit housing is connected to the other-side connector 312 of the other unit housing. The one-side connector 310 is configured to include a one-side power supply connector 142 for supplying power and a one-side signal connector 144 for transmitting electrical signals that is separate from the one-side power supply connector 142, and the other-side connector 312 is configured to include an other-side power supply connector 146 that can be connected to the one-side power supply connector 142, and an other-side signal connector 148 that is separate from the other-side power supply connector 146 and can be connected to the one-side signal connector 144.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a unit device. [Background technology]

[0002] Patent Document 1 shows a unit device that can be connected, and a connector is provided on the side of the unit housing of the unit device.

[0003] In this unit device, when the unit housings are placed adjacent to each other, the connector on one unit housing is connected to the connector on the other unit housing, thereby enabling power supply and signal transmission between the two unit housings via the connectors on one unit housing and the other unit housing that are connected to each other. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2008-267424 Summary of the Invention [Problem to be solved by the invention]

[0005] This unit device receives power supply and transmits signals through a pair of connectors provided on one unit housing and the other unit housing.

[0006] Therefore, there is a risk that noise contained in the power supplied to the unit device may affect the electrical signals being transmitted.

[0007] The present invention has been made in view of the above problems, and has an object to make it possible to suppress the influence of the power supply on the electrical signal. [Means for solving the problem]

[0008] A unit device according to one embodiment of the present invention is a unit device in which a one-side connector is provided on one side of a unit housing and a other-side connector is provided on the other side opposite the one side, and in which a plurality of unit housings are arranged adjacent to each other, the one-side connector of one unit housing is connected to the other-side connector of the other unit housing, and the one-side connector is configured to include a one-side power supply connector for supplying power and a one-side signal connector for transmitting electrical signals that is separate from the one-side power supply connector, and the other-side connector is configured to include a other-side power supply connector that can be connected to the one-side power supply connector, and a other-side signal connector that is separate from the other-side power supply connector and can be connected to the one-side signal connector. [Effects of the Invention]

[0009] In this aspect, the power supply path between one unit housing and the other unit housing arranged adjacently is made up of a one-side power supply connector provided on one side of the one unit housing and a other-side power supply connector provided on the other side of the other unit housing, and the signal transmission path between the one unit housing and the other unit housing is made up of a one-side signal connector provided on one side of the one unit housing and a other-side signal connector provided on the other side of the other unit housing.

[0010] This separates the power supply path and the signal transmission path into a connection path formed by the one-side power connector and the other-side power connector, and a connection path formed by the one-side signal connector and the other-side signal connector. Therefore, by arranging the one-side power connector and the other-side power connector, and the one-side signal connector and the other-side signal connector apart, the unit device can form the power supply path and the signal transmission path at separate locations.

[0011] Therefore, due to the structure of the unit device in which the power supply path and the signal transmission path are formed by a set of connectors that are connected to each other, it is possible to reduce the impact that the power supply has on the electrical signal compared to when the power supply path and the signal transmission path cannot be separated. [Brief explanation of the drawings]

[0012] [Figure 1] FIG. 1 is a perspective view showing an arrangement state in which unit devices according to this embodiment are arranged adjacent to each other. [Figure 2] FIG. 2 is a perspective view showing a cross section of a main part of the second unit housing. [Figure 3] FIG. 3 is a perspective view showing the bottom surface of the connecting part. [Figure 4] FIG. 4 is a perspective view showing a main part of the connecting part. [Figure 5] FIG. 5 is a plan view showing the insertion holes of the connecting parts. [Figure 6] FIG. 6 is a perspective view showing a cross section of a main part of the connecting part. [Figure 7] FIG. 7 is a cross-sectional view of the main part showing a state in which the head of a screw inserted into the insertion hole of the connecting part is in contact with a metal plate. [Figure 8] FIG. 8 is a perspective view showing the unit device. [Figure 9] FIG. 9 is a perspective view showing the unit device as viewed from the left. [Figure 10] FIG. 10 is a cross-sectional view of the essential part showing the connecting portion of adjacent unit housings. [Figure 11] FIG. 11 is a perspective view showing the unit device as viewed from the bottom side. [Figure 12] FIG. 12 is a diagram showing a vertical cross section of the unit device. [Figure 13] FIG. 13 is a diagram showing a cross section of the unit device. [Figure 14] FIG. 14 is a side view showing the left side of the unit device. [Figure 15]FIG. 15 is an explanatory diagram showing a state in which a force is applied to the coupled first unit housing and second unit housing in directions in which they move apart from each other. [Figure 16] FIG. 16 is a cross-sectional view of the essential part showing the connection portion between the connector of the first unit housing and the connector of the second unit housing. [Figure 17] FIG. 17 is an explanatory diagram showing the relationship between the connector of the first unit housing and the connector of the second unit housing. [Figure 18] FIG. 18 is an explanatory diagram showing the relationship between the protrusions provided on the connecting parts and the guide grooves provided on the top plate. DETAILED DESCRIPTION OF THE INVENTION

[0013] Hereinafter, a unit device according to an embodiment of the present invention will be described with reference to the accompanying drawings.

[0014] Fig. 1 is a perspective view showing an arrangement state 300 in which unit devices 10 (10A, 10B) according to this embodiment are arranged adjacent to each other. Fig. 2 is a perspective view showing a cross section of a main part of a second unit housing 12B.

[0015] As shown in FIGS. 1 and 2, adjacently arranged unit devices 10 (10A, 10B) are connected by a connection structure using connection parts 16 (16A, 16B).

[0016] The unit devices 10 (10A, 10B) to be connected include, for example, observation devices that digitally process and store measured signals. The observation devices include, for example, multi-channel data loggers used in battery charge / discharge tests. By connecting the unit devices 10 (10A, 10B) that are made up of data loggers, it is possible to increase the number of measurable channels.

[0017] 1 and 2 show, as an example, an arrangement state 300 in which a first unit housing 12A of a first unit device 10A and a second unit housing 12B of a second unit device 10B are arranged adjacent to each other. The adjacent first unit device 10A and second unit device 10B are connected by a connecting part 16 (16A, 16B).

[0018] A one-surface connector 310 is provided on a right side surface 42 (42A, 42B) as one surface of the unit housing 12 constituting the first unit housing 12A and the second unit housing 12B. In addition, a other-surface connector 312 is provided on a left side surface 90 (90A, 90B) as the other surface opposite the right side surface 42 of the unit housing 12 (see FIG. 2).

[0019] In an arrangement state 300 in which the first unit housing 12A and the second unit housing 12B are arranged adjacent to each other, a one-side connector 310 of the first unit housing 12A as one of the unit housings is connected to a other-side connector 312 of the second unit housing 12B as the other unit housing (see Figure 2).

[0020] (connected structure) The first unit device 10A includes a top surface side connecting part 16A that extends from the top surface 14A of the first unit housing 12A in the arrangement state 300 and can be arranged along the top surface 14B of the second unit housing 12B. The second unit device 10B includes a top surface side guide groove 100 (see FIG. 8 ) that is provided on the top surface 14B of the second unit housing 12B and that guides the top surface side protrusion 18A provided on the top surface side connecting part 16A during connection. The top surface side guide groove 100 extends along the insertion / removal direction 20 of the one surface side connector 310 and the other surface side connector 312.

[0021] The first unit device 10A also includes a bottom-side connecting part 16B that extends from the bottom surface 22A of the first unit housing 12A in the arrangement state 300 and can be arranged along the bottom surface 22B of the second unit housing 12B. The second unit device 10B includes a bottom-side guide groove 120 (see FIG. 11 ) that is provided on the bottom surface 22B of the second unit housing 12B and that guides the bottom-side protrusion 18B provided on the bottom-side connecting part 16B during connection. The bottom-side guide groove 120 extends along the insertion / removal direction 20 of the one-side connector 310 and the other-side connector 312.

[0022] In this embodiment, the first unit housing 12A of the first unit device 10A and the second unit housing 12B of the second unit device 10B are disposed adjacent to each other and connected to each other, but this embodiment is not limited to this. For example, three or more unit devices 10 of this embodiment can be disposed adjacent to each other and connected to each other.

[0023] Furthermore, in this embodiment, a case will be described as an example in which the top surface side connecting part 16A protruding from the right side surface 42A of the first unit housing 12A extends toward the second unit housing 12B, and the top surface side protrusion 18A of the top surface side connecting part 16A is guided by the top surface side guide groove 100 of the second unit housing 12B. However, this embodiment is not limited to this configuration. For example, a configuration may be adopted in which the top surface side connecting part 16A protruding from the left side surface 90B of the second unit housing 12B extends toward the first unit housing 12A, and the top surface side protrusion 18A of the top surface side connecting part 16A is guided by the top surface side guide groove 100 formed in the first unit housing 12A.

[0024] Furthermore, in this embodiment, a case will be described as an example in which the bottom-side connecting part 16B protruding from the right side surface 42A of the first unit housing 12A extends toward the second unit housing 12B, and the bottom-side protrusion 18B of the bottom-side connecting part 16B is guided by the bottom-side guide groove 120 of the second unit housing 12B. However, this embodiment is not limited to this configuration. For example, a configuration may be adopted in which the bottom-side connecting part 16B protruding from the left side surface 90B of the second unit housing 12B extends toward the first unit housing 12A, and the bottom-side protrusion 18B of the bottom-side connecting part 16B is guided by the bottom-side guide groove 120 formed in the first unit housing 12A.

[0025] Next, each part constituting the connection structure of the unit device 10 will be specifically described.

[0026] (Connecting parts) The above-mentioned top surface side connecting part 16A and bottom surface side connecting part 16B are configured in the same manner, and the connecting parts 16 constituting the top surface side connecting part 16A and bottom surface side connecting part 16B will be described in detail using Figures 3 to 7.

[0027] Fig. 3 is a perspective view showing the bottom surface of the connecting part 16. Fig. 4 is a perspective view showing the main part of the connecting part 16. Fig. 5 is a plan view showing the insertion hole 56 of the connecting part 16. Fig. 6 is a perspective view showing a cross section of the main part of the connecting part 16. Fig. 7 is a cross section of the main part showing a state in which the head of the screw inserted through the insertion hole 56 of the connecting part 16 is in contact with the metal plate 46.

[0028] 3, the connecting part 16 is formed in the shape of a rectangular plate. The connecting part 16 is large enough to protrude from the right side surface 42 of the unit housing 12 when fixed to the top surface 14 (14A, 14B) or the bottom surface 22 (22A, 22B) of the corresponding unit housing 12 (see FIGS. 8, 9, 11, and 12).

[0029] The connecting part 16 is formed by insert molding a metal plate 46 into a resin part 44 made of synthetic resin.

[0030] The metal plate 46 constitutes the top surface side metal plate when the connecting part 16 is used as the top surface side connecting part 16A, and constitutes the bottom surface side metal plate when the connecting part 16 is used as the bottom surface side connecting part 16B.

[0031] The resin part 44 covers the front surface 82 side of the metal plate 46 (see FIG. 4), and the metal plate 46 is exposed on the back surface 80 of the connecting part 16 (see FIG. 3).

[0032] (Cylindrical part) The connecting part 16 has a pair of cylindrical parts 48 integrally formed at the location of a metal plate 46 that is fixed to each unit housing 12. A fixing screw 50 is inserted into each cylindrical part 48, and each fixing screw 50 is screwed into a threaded hole 51 (see FIG. 10 ) in the top surface 14 or the bottom surface 22 of the corresponding unit housing 12. In this way, the connecting part 16 is fixed to the corresponding unit housing 12.

[0033] In a fixed state in which the connecting part 16 is fixed to the corresponding unit housing 12 , the cylindrical part 48 is electrically connected to the metal top surface 14 or bottom surface 22 of the corresponding unit housing 12 .

[0034] (protrusion) The protrusions 18 provided on the connecting part 16 include screw protrusions 18-1 provided on both ends of the connecting part 16 in the longitudinal direction.

[0035] The protrusion 18 constitutes a top surface side protrusion 18A when the connecting component 16 is used as a top surface side connecting component 16A, and constitutes a bottom surface side protrusion 18B when the connecting component 16 is used as a bottom surface side connecting component 16B. The screw protrusion 18-1 constitutes a top surface side screw protrusion 18-1A when the connecting component 16 is used as a top surface side connecting component 16A (see FIG. 8), and constitutes a bottom surface side screw protrusion 18-1B when the connecting component 16 is used as a bottom surface side connecting component 16B (see FIG. 8).

[0036] The projection 18 is configured to include two screw projections 18-1 and a contact projection 18-2 provided in the middle of the screw projections 18-1.

[0037] The contact protrusion 18-2 forms a top surface side contact protrusion 18-2A when the connecting part 16 is used as a top surface side connecting part 16A (see Figure 8), and forms a bottom surface side contact protrusion 18-2B when the connecting part 16 is used as a bottom surface side connecting part 16B (see Figure 8).

[0038] (Screw protrusion) The screw projection 18-1 has an insertion hole 56 through which a stepped screw 54 is inserted.

[0039] The shoulder screw 54 constitutes a top surface side screw when the connecting part 16 is used as a top surface side connecting part 16A, and constitutes a bottom surface side screw when the connecting part 16 is used as a bottom surface side connecting part 16B.

[0040] The insertion hole 56 forms a top surface side insertion hole 56A when the connecting part 16 is used as a top surface side connecting part 16A (see Figure 8), and forms a bottom surface side insertion hole 56B when the connecting part 16 is used as a bottom surface side connecting part 16B (see Figure 8).

[0041] 4, the shoulder screw 54 includes a head 60, a cylindrical portion 62 extending from the head 60, and a threaded portion 64 extending from the cylindrical portion 62. An outer diameter 66 of the cylindrical portion 62 is smaller than a nominal diameter 68 of the threaded portion 64.

[0042] The screw projection 18-1 is made of synthetic resin and is integrally formed with the metal plate 46, and the screw projection 18-1 is integrally formed with the resin portion 44.

[0043] Explaining this in more detail with reference to Figure 4, resin part 44 covering front surface 82 of metal plate 46 has a cylindrical part 72 formed therein that extends toward back surface 80 along the inner circumferential surface of opening 70 provided in metal plate 46. The space inside cylindrical part 72 forms insertion hole 56, and insertion hole 56 passes through connecting part 16.

[0044] The cylindrical portion 72 has a large diameter at the portion that protrudes toward the rear surface 80 of the metal plate 46, and this large diameter portion constitutes the screw projection 18-1 (see FIG. 3).

[0045] The insertion hole 56 is formed with a small diameter portion 76 having a small inner diameter 74, and a large diameter portion 78 having an inner diameter larger than the small diameter portion 76. The small diameter portion 76 is formed inside the opening 70 provided in the metal plate 46, in a portion on the front surface 82 side of the metal plate 46.

[0046] The small diameter portion 76 constitutes the top surface side small diameter portion when the connecting part 16 is used as the top surface side connecting part 16A, and constitutes the bottom surface side small diameter portion when the connecting part 16 is used as the bottom surface side connecting part 16B.

[0047] The inner diameter dimension 74 of the small diameter portion 76 is smaller than the nominal diameter 68 of the shoulder screw 54. The inner diameter dimension of the large diameter portion 78 is larger than the nominal diameter 68 of the shoulder screw 54. When the threaded portion 64 of the shoulder screw 54 is screwed into the small diameter portion 76, a female thread is formed in the small diameter portion 76. When the threaded portion 64 passes through the small diameter portion 76, the cylindrical portion 62 of the shoulder screw 54 is positioned in the small diameter portion 76. The shoulder screw 54 is allowed to move in the axial direction within the range in which the cylindrical portion 62 is positioned in the small diameter portion 76. In this state, the threads of the threaded portion 64 abut against the threads formed on the small diameter portion 76, thereby preventing the shoulder screw 54 from falling off the connecting part 16.

[0048] 5 and 6, three slits 84 extending radially outward from the opening 70 are formed in the metal plate 46. As a result, when the metal plate 46 is insert-molded into the resin portion 44, the synthetic resin flows along the slits 84, making it easy to form the tubular portion 72 along the inner circumferential surface of the opening 70.

[0049] A countersunk hole 86 is formed on the outer periphery of the insertion hole 56 that opens into the resin part 44 of the connecting part 16 (see FIG. 6). At the bottom of this countersunk hole 86, a part of the metal plate 46 is exposed.

[0050] As shown in Figure 7, when the shoulder screw 54 is screwed into the unit housing 12, the head 60 of the shoulder screw 54 screwed into the unit housing 12 comes into contact with the metal plate 46 exposed in the countersunk hole 86, and the metal plate 46 and the unit housing 12 are electrically connected.

[0051] (Contact protrusion) 3, the contact protrusion 18-2 is integrally formed with the metal plate 46. The contact protrusion 18-2 is formed in a cylindrical shape, and the tip surface of the contact protrusion 18-2 forms a contact surface 88 that can electrically contact the top surface 14 or the bottom surface 22 of the unit housing 12.

[0052] The contact surface 88 forms a top surface side contact surface 88A when the connecting part 16 is used as a top surface side connecting part 16A (see Figure 8), and forms a bottom surface side contact surface 88B when the connecting part 16 is used as a bottom surface side connecting part 16B (see Figure 8).

[0053] (unit equipment) The first unit device 10A and the second unit device 10B have the same configuration, and the unit devices 10 constituting the first unit device 10A and the second unit device 10B will be described with reference to FIGS. 8 to 14. FIG.

[0054] FIG. 8 is a perspective view showing the unit device 10. FIG. 9 is a perspective view showing the unit device 10 as viewed from the left. FIG. 10 is a cross-sectional view of the main part showing the connecting portion of adjacent unit housings (12A, 12B). FIG. 11 is a perspective view showing the unit device 10 as viewed from the bottom side. FIG. 12 is a diagram showing a vertical cross section of the unit device 10. FIG. 13 is a diagram showing a horizontal cross section of the unit device 10. FIG. 14 is a side view showing the left side surface 90 of the unit device 10.

[0055] (unit housing) 8, the unit housing 12 of the unit device 10 is formed into a rectangular shape from a metal plate. The unit housing 12 has a rectangular bottom surface 22, a front surface 28 extending from the front edge of the bottom surface 22, and a back surface 30 extending from the rear edge of the bottom surface 22.

[0056] The unit housing 12 also has a right side surface 42 as one surface extending from the right edge of the bottom surface 22, a left side surface 90 as the other surface extending from the left edge of the bottom surface 22, and a top surface 14 connecting the upper edges of the front surface 28, the back surface 30, the left side surface 90, and the right side surface 42.

[0057] The right side surface 42 constitutes a side surface that connects a right edge portion 28-1 as one edge of the front surface 28 of the unit housing 12 and a right edge portion 30-1 as one edge of the back surface 30 of the unit housing 12.

[0058] As shown in FIG. 9, the left side surface 90 forms the other side surface that connects a left edge portion 28-2 as the other edge portion of the front surface 28 and a left edge portion 30-2 as the other edge portion of the back surface 30.

[0059] 8 and 9, a top surface fixing part 94 is provided in the right region of the top surface 14 of the unit housing 12, and a top surface connecting part 16A made up of the connecting part 16 is fixed to the top surface fixing part 94 with a metal fixing screw 50. A part of the top surface connecting part 16A extends from the right side surface 42 while being fixed to the top surface 14 of the unit housing 12.

[0060] A top surface recess 98 is formed in the left region of the top surface 14 of the unit housing 12, for positioning a part of the top surface connecting part 16A extending from the unit housing 12 arranged adjacent to the left. A top surface guide groove 100 is formed in the top surface recess 98, which guides the top surface protrusion 18A provided on the top surface connecting part 16A during connection and extends along the insertion / removal direction 20 of the one surface connector 310 and the other surface connector 312.

[0061] (Guide groove on top side) The top surface side guide groove 100 includes a pair of top surface side screw protrusion guide grooves 100-1 that respectively guide the top surface side screw protrusions 18-1A of the top surface side connecting component 16A. The top surface side guide groove 100 also includes a top surface side contact protrusion guide groove 100-2 that guides the top surface side contact protrusion 18-2A of the top surface side connecting component 16A.

[0062] At the bottom of the top surface side screw projection guide groove 100-1, a top surface side screw-in portion 102 is provided into which the stepped screw 54, which is the top surface side screw of the top surface side screw projection 18-1A, is screwed in when the top surface side screw projection 18-1A of the top surface side connecting part 16A is arranged. The top surface side screw-in portion 102 is formed integrally with the top surface 14.

[0063] As shown in Figure 10, when the top surface side connecting part 16A is screwed into the top surface side screwing portion 102 of the second unit housing 12B with the stepped screw 54, the top surface side contact surface 88A of the top surface side contact protrusion 18-2A is in electrical contact with the top surface 14B of the second unit housing 12B.

[0064] 11, a bottom surface fixing part 110 is provided in the right region of the bottom surface 22 of the unit housing 12, and a bottom surface connecting part 16B made up of the connecting part 16 is fixed to the bottom surface fixing part 110 with a metal fixing screw 50. The bottom surface connecting part 16B extends from the right side surface 42 while being fixed to the bottom surface 22 of the unit housing 12.

[0065] 8 and 11, a bottom recess 112 is formed in the left region of the bottom surface 22 of the unit housing 12 to position a part of the bottom connecting part 16B extending from the unit housing 12 arranged adjacent to the left. A bottom guide groove 120 is formed in the bottom recess 112. The bottom guide groove 120 guides the bottom protrusion 18B provided on the bottom connecting part 16B during connection and extends along the insertion / removal direction 20 of the one-side connector 310 and the other-side connector 312.

[0066] (Bottom guide groove) The bottom surface side guide groove 120 includes a pair of bottom surface side screw projection guide grooves 120-1 that respectively guide the bottom surface side screw projections 18-1B of the bottom surface side connecting component 16B (see FIG. 8). The bottom surface side guide groove 120 also includes a bottom surface side contact projection guide groove 120-2 that guides the bottom surface side contact projection 18-2B of the bottom surface side connecting component 16B (see FIG. 8).

[0067] At the bottom of the bottom-side screw-protrusion guide groove 120-1, a bottom-side screw-in portion 122 is provided into which a shoulder screw 54 serving as a bottom-side screw of the bottom-side screw protrusion 18-1B of the bottom-side connecting part 16B is screwed when the bottom-side screw protrusion 18-1B is arranged. The bottom-side screw-in portion 122 is formed integrally with the bottom surface 22.

[0068] (internal structure) 12, a main board 130 on which an electronic circuit is configured is provided inside the unit housing 12. The main board 130 is configured as a printed circuit board in which connection lines between components are formed by printed wiring.

[0069] The main board 130 extends along the left side surface 90 and the right side surface 42, and has a size that spans from the front surface 28 side to the rear surface 30 side.

[0070] 13, a sub-board 132 is provided as a board inside the unit housing 12. The sub-board 132 is configured as a printed circuit board in which connection lines between components are formed by printed wiring.

[0071] The sub-board 132 is disposed along the rear surface 30 and is fixed to the rear surface 30 .

[0072] (connector) The area on the right side of the sub-board 132 is provided with the one-side connector 310 described above, which is arranged on the right side surface 42 of the unit housing 12. The area on the left side of the sub-board 132 is provided with the other-side connector 312 described above, which is arranged on the left side surface 90 of the unit housing 12.

[0073] (One-side connector) The first-surface connector 310 includes a first-surface power supply connector 142 for supplying electric power, and a first-surface signal connector 144 that is separate from the first-surface power supply connector 142 and is used to transmit electrical signals.

[0074] The one-side power supply connector 142 and the one-side signal connector 144 are supported by a sub-board 132 fixed to the rear surface 30. As a result, the one-side power supply connector 142 and the one-side signal connector 144 are disposed on the right side surface 42, which serves as one side surface, closer to the rear surface 30 than the center of the right side surface 42 in the longitudinal direction (see FIG. 8).

[0075] The one-surface power connector 142 is provided on the top surface 14 side of the sub-board 132 , and the one-surface signal connector 144 is provided on the bottom surface 22 side of the sub-board 132 .

[0076] 8, the one-side power supply connector 142 is arranged on the top surface 14 side, which is one side of the height center HC located midway between the top surface 14 and the bottom surface 22 of the unit housing 12. The one-side signal connector 144 is arranged on the bottom surface 22 side, which is the other side of the height center HC.

[0077] (other side connector) As shown in Figure 13, the other-side connector 312 is composed of a other-side power supply connector 146 that can be connected to the one-side power supply connector 142, and a other-side signal connector 148 that is separate from the other-side power supply connector 146 and can be connected to the one-side signal connector 144.

[0078] The other-surface power supply connector 146 and the other-surface signal connector 148 are supported by a sub-board 132 fixed to the rear surface 30. As a result, the other-surface power supply connector 146 and the other-surface signal connector 148 are disposed on the left side surface 90, which serves as the other surface, closer to the rear surface 30 than the center of the left side surface 90 in the longitudinal direction (see FIG. 9).

[0079] The other surface power connector 146 is provided on the top surface 14 side of the sub-board 132 , and the other surface signal connector 148 is provided on the bottom surface 22 side of the sub-board 132 .

[0080] 9, the other-surface power connector 146 is disposed on the top surface 14 side, which is one side of the height center HC located midway between the top surface 14 and the bottom surface 22 of the unit housing 12. The other-surface signal connector 148 is disposed on the bottom surface 22 side, which is the other side of the height center HC.

[0081] 13, a high voltage and a large current are applied to the first-side power supply connector 142 and the second-side power supply connector 146. The first-side power supply connector 142 and the second-side power supply connector 146 are configured as DIP-type connectors in which each terminal is soldered while inserted into a through-hole in the sub-board 132.

[0082] The one-side signal connector 144 and the other-side signal connector 148 transmit electrical signals. Examples of the transmitted electrical signals include data measured by the unit devices 10, or control signals transmitted and received between the connected unit devices 10. The transmitted electrical signals include digital signals and analog signals. The one-side signal connector 144 and the other-side signal connector 148 are configured as SMD-type connectors in which each terminal is soldered to printed wiring formed on the sub-board 132.

[0083] The first-side signal connector 144 and the other-side signal connector 148 are more suitable for high-speed data transmission than the first-side power connector 142 and the other-side power connector 146. On the other hand, the first-side signal connector 144 and the other-side signal connector 148 are less firmly fixed to the sub-board 132 than the first-side power connector 142 and the other-side power connector 146. Furthermore, the first-side power connector 142 and the other-side power connector 146 are more suitable for application of high voltages and passage of large currents than the first-side signal connector 144 and the other-side signal connector 148.

[0084] The one-side power supply connector 142 and the one-side signal connector 144 are configured as male connectors, and the other-side power supply connector 146 and the other-side signal connector 148 are configured as female connectors. The one-side power supply connector 142 can be connected to the other-side power supply connector 146, and the one-side signal connector 144 can be connected to the other-side signal connector 148.

[0085] As a result, by arranging and connecting the unit devices 10 adjacent to each other, the power supply connector 142 on one side of one unit device 10 is connected to the power supply connector 146 on the other side of the other unit device 10. Also, the signal connector 144 on one side of one unit device 10 is connected to the signal connector 148 on the other side of the other unit device 10.

[0086] The sub-board 132 is formed with a printed wiring PW1 that electrically connects the power terminal of the one-side power supply connector 142 and the power terminal of the other-side power supply connector 146. This allows power to be exchanged between the unit device 10 connected to the left of the unit device 10 and the unit device 10 connected to the right of the unit device 10 via the other-side power supply connector 146, the printed wiring PW1, and the one-side power supply connector 142.

[0087] Furthermore, the sub-board 132 is formed with a printed wiring PW2 that electrically connects the signal transmission terminal of the one-side signal connector 144 and the signal transmission terminal of the other-side signal connector 148. This allows electrical signals to be exchanged between the unit device 10 connected to the left of the unit device 10 and the unit device 10 connected to the right of the unit device 10 via the other-side signal connector 148, the printed wiring PW2, and the one-side signal connector 144.

[0088] (Guide structure) 8, guide walls (150, 152) are provided on the right side surface 42 of the unit housing 12. The guide walls (150, 152) include a power supply guide wall 150 provided on the outer periphery of the one-side power supply connector 142, and a signal guide wall 152 provided on the outer periphery of the one-side signal connector 144.

[0089] The power supply guide wall 150 includes a power supply guide main body 150A that extends along the longitudinal direction of the one-side power supply connector 142. The power supply guide wall 150 also includes a power supply top surface extension portion 150B that extends from an edge of the power supply guide main body 150A on the top surface 14 side toward the back surface 30. The power supply guide wall 150 also includes a power supply bottom surface extension portion 150C that extends from an edge of the power supply guide main body 150A on the bottom surface 22 side toward the back surface 30. As a result, the power supply guide wall 150 surrounds the one-side power supply connector 142 and is formed in a U-shape that opens toward the back surface 30.

[0090] The signal guide wall 152 includes a signal guide main body 152A extending along the longitudinal direction of the one-side signal connector 144. The signal guide wall 152 also includes a signal top surface side extension portion 152B extending from an edge of the signal guide main body 152A on the top surface 14 side toward the back surface 30. The signal guide wall 152 also includes a signal bottom surface side extension portion 152C extending from an edge of the signal guide main body 152A on the bottom surface 22 side toward the back surface 30. As a result, the signal guide wall 152 surrounds the one-side signal connector 144 and is formed in a U-shape that opens toward the back surface 30.

[0091] 9 and 14, insertion portions (160, 162) into which the guide walls (150, 152) are inserted in the connected state are provided on the left side surface 90 of the unit housing 12. The insertion portions (160, 162) include a power insertion portion 160 and a signal insertion portion 162.

[0092] The power supply insertion section 160 is configured as an opening formed in the left side surface 90 of the unit housing 12. Inside the power supply insertion section 160, the other surface power supply connector 146 is arranged.

[0093] A power supply guide body edge 164 is provided on the edge of the power supply insertion portion 160, corresponding to the power supply guide body 150A of the power supply guide wall 150. A power supply guide body receding wall 166 that recedes inward is formed on the power supply guide body edge 164.

[0094] The signal insertion section 162 is configured as an opening formed in the left side surface 90 of the unit housing 12. Inside the signal insertion section 162, the other surface signal connector 148 is arranged.

[0095] A signal guide body edge 168 corresponding to the signal guide body 152A of the signal guide wall 152 is provided on the edge of the signal insertion portion 162. A signal guide body receding wall 172 receding inward is formed on the signal guide body edge 168.

[0096] (Guide function) Next, the guide function in the connection structure of the unit devices 10 will be described with reference to the drawings.

[0097] Fig. 15 is an explanatory diagram showing how a force F is applied to the coupled first and second unit housings 12A and 12B in directions that move them apart. Fig. 16 is a cross-sectional view of the essential parts showing the connection between the connector (144) of the first unit housing 12A and the connector (148) of the second unit housing 12B.

[0098] 15 and 16, when the connected unit devices 10A, 10B are removed from the front faces 28A, 28B, a force F is applied to the first unit housing 12A or the second unit housing 12B in a direction in which the front faces 28A, 28A of the unit housings 12A, 12B move away from each other. This causes at least one of the first unit housing 12A or the second unit housing 12B to rotate about an abutment point 170 between the end of the first unit housing 12A on the rear face 30A side and the end of the second unit housing 12B on the rear face 30B side (see FIG. 16).

[0099] When at least one of the unit housings 12A, 12B is rotated, the one-side signal connector 144 and the other-side signal connector 148 are relatively displaced in a cross direction 174 that crosses the insertion / removal direction 20 of both connectors 144, 148.

[0100] At this time, the relationship between the signal guide wall 152 and the signal insertion section 162 is configured so that the signal guide main body 152A of the signal guide wall 152 abuts against the signal guide main body rearward wall 172, which is the inner wall surface of the signal insertion section 162, before the relative displacement 185 (see Figure 17) of both connectors 144, 148 in the intersecting direction 174 exceeds the allowable amount that allows displacement in the intersecting direction 174.

[0101] Then, when the signal guide main body 152A of the signal guide wall 152 abuts against the signal guide main body rearward wall 172 of the signal insertion portion 162, rotation of both unit housings 12A, 12B is prevented. As a result, a rotation prevented state 176 is formed in which rotation of both unit housings 12A, 12B about the abutment point 170 is prevented.

[0102] Here, the allowable amount of displacement in the intersecting direction 174 is, for example, a floating amount 186 that allows the electrical connection between each connector 144, 148 and the printed wiring to be maintained even if the other side signal connector 148, whose terminals are soldered to the printed wiring of the sub-board 132, is displaced in the intersecting direction 174 (see Figure 17).

[0103] (Rotation prevented state) This rotation-blocked state 176 will be specifically described with reference to the drawings.

[0104] Fig. 17 is an explanatory diagram showing the relationship between the connector (144) of the first unit housing 12A and the connector (148) of the second unit housing 12B. Fig. 18 is an explanatory diagram showing the relationship between the protrusion 18 (18-1A) provided on the connecting part 16 and the guide groove (100-1) provided on the top surface 14.

[0105] As shown in Figures 16 and 17, the distance 182 from the contact point 180 where the one-side signal connector 144 of the first unit housing 12A and the other-side signal connector 148 of the second unit housing 12B meet on the front surface 28 side to the abutment point 170 of both unit housings 12A and 12B is, for example, approximately 23 mm (see Figure 16).

[0106] In addition, when the first surface signal connector 144 is connected to and fitted with the second surface signal connector 148, the fitting length 184 between the first surface signal connector 144 and the second surface signal connector 148 is, for example, approximately 2 mm.

[0107] The floating amount 186 by which the one-surface signal connector 144 or the other-surface signal connector 148 can be displaced in the intersecting direction 174 is set to, for example, 0.5 mm (see FIG. 17).

[0108] In this case, when both unit housings 12A, 12B are rotated by a predetermined angle α of approximately 1.27 degrees around the abutment point 170, the signal guide body 152A of the signal guide wall 152 abuts against the signal guide body rearward wall 172 of the signal insertion portion 162, resulting in a rotation-blocking state 176 (see Figure 16).

[0109] As shown in Figure 18, if the distance 192 from the center 190 of the top surface side screw protrusion 18-1A located on the front surface 28 side of the top surface side connecting part 16A to the abutment point 170 of both unit housings 12A and 12B is set to, for example, approximately 127 mm, the gap dimension 194 from the top surface side screw protrusion 18-1A to the wall surface of the corresponding top surface side screw protrusion guide groove 100-1 is set to, for example, approximately 0.2 mm.

[0110] In this case, when both unit housings 12A and 12B are rotated by a predetermined angle α of approximately 1.27 degrees around the abutment point 170, the top surface side screw protrusion 18-1A abuts against the wall surface of the top surface side screw protrusion guide groove 100-1 at the abutment point 196, and the aforementioned rotation prevention state 176 is formed.

[0111] The relationship between the bottom surface side screw projection 18-1B of the bottom surface side connecting part 16B and the bottom surface side screw projection guide groove 120-1 is also configured in the same manner as described above.

[0112] (Action and effect) Next, the effects of this embodiment will be described.

[0113] In the unit device 10 of this embodiment, a first-side connector 310 is provided on the right side surface 42, which serves as one side of the unit housing 12, and an other-side connector 312 is provided on the left side surface 90, which serves as the other side opposite the right side surface 42. In an arrangement 300 in which a plurality of unit housings 12 are arranged adjacent to one another, the first-side connector 310 of a first unit housing 12A, which serves as one of the unit housings, is connected to the other-side connector 312 of a second unit housing 12B, which serves as the other unit housing. The first-side connector 310 includes a first-side power supply connector 142 for supplying power and a first-side signal connector 144 for transmitting electrical signals, which is separate from the first-side power supply connector 142. The other-side connector 312 includes a second-side power supply connector 146 connectable to the first-side power supply connector 142, and a second-side signal connector 148, which is separate from the second-side power supply connector 146 and connectable to the first-side signal connector 144.

[0114] According to this configuration, the power supply path between the adjacently arranged first unit housing 12A and second unit housing 12B is made up of a one-side power supply connector 142 provided on the right side surface 42A of the first unit housing 12A and an other-side power supply connector 146 provided on the left side surface 90B of the second unit housing 12B. In addition, the signal transmission path between the first unit housing 12A and the second unit housing 12B is made up of a one-side signal connector 144 provided on the right side surface 42A of the first unit housing 12A and an other-side signal connector 148 provided on the left side surface 90B of the second unit housing 12B.

[0115] As a result, the power supply path and the signal transmission path are divided into a connection path formed by one-side power supply connector 142 and other-side power supply connector 146, and a connection path formed by one-side signal connector 144 and other-side signal connector 148. Therefore, by arranging one-side power supply connector 142 and other-side power supply connector 146 and one-side signal connector 144 and other-side signal connector 148 apart from each other, the power supply path and the signal transmission path can be formed at separate locations.

[0116] Therefore, due to the structure in which the power supply path and the signal transmission path are formed by a pair of connectors that are connected to each other, it is possible to reduce the impact that the supply power has on the electrical signal compared to when the power supply path and the signal transmission path cannot be separated.

[0117] In addition, by separating the power connectors 142, 146 from the signal connectors 144, 148, the signal transmission speed between the multiple unit devices 10 (10A, 10B) connected to each other can be increased.

[0118] In addition, in the unit device 10, the one-side power supply connector 142, the other-side power supply connector 146, the one-side signal connector 144, and the other-side signal connector 148 are configured as separate members.

[0119] Therefore, the one-side power connector 142 and the other-side power connector 146 can be configured with, for example, a DIP-type connector suitable for applying high voltage and passing large current. On the other hand, the one-side signal connector 144 and the other-side signal connector 148 can be configured with, for example, an SMD-type connector suitable for high-speed data transmission. This enables high-voltage and large-current power supply and high-speed data transmission in the connected unit devices 10.

[0120] In this embodiment, the one surface (42) constitutes a right side surface 42 as one side surface connecting a right edge portion 28-1 as one edge of the front surface 28 of the unit housing 12 and a right edge portion 30-1 as one edge of the back surface 30 of the unit housing 12. The other surface (90) constitutes a left side surface 90 as the other side surface connecting a left edge portion 28-2 as the other edge of the front surface 28 and a left edge portion 30-2 as the other edge of the back surface 30. The one-surface power supply connector 142 and the one-surface signal connector 144 are arranged on the right side surface 42, facing the back surface 30. The other-surface power supply connector 146 and the other-surface signal connector 148 are arranged on the left side surface 90, facing the back surface 30.

[0121] According to this configuration, the one-side power connector 142 and the one-side signal connector 144 are arranged on the rear surface 30 side of the right side 42, and the other-side power connector 146 and the other-side signal connector 148 are arranged on the rear surface 30 side of the left side 90.

[0122] This allows the power supply paths and signal transmission paths to be concentrated on the rear surface 30 side, making it possible to ensure a large space for forming, for example, an electronic circuit inside the unit housing 12. Furthermore, compared to when the connectors 142, 144, 146, 148 are provided in the center of each side surface 42, 90, it is possible to effectively use the center of the unit housing 12 as a large space where the connectors do not protrude.

[0123] The unit device 10 of this embodiment is further provided with a sub-board 132 as a printed circuit board that is arranged along the back surface 30 and supports the one-side power supply connector 142, the other-side power supply connector 146, the one-side signal connector 144, and the other-side signal connector 148. The sub-board 132 electrically connects the one-side power supply connector 142 and the other-side power supply connector 146, and also electrically connects the one-side signal connector 144 and the other-side signal connector 148.

[0124] According to this configuration, the sub-board 132, which connects the one-side power connector 142 and the other-side power connector 146 and also connects the one-side signal connector 144 and the other-side signal connector 148, is arranged along the rear surface 30.

[0125] Therefore, the power supply path connecting the power connectors 142 and 146 and the signal transmission path connecting the signal connectors 144 and 148 can be formed by, for example, printed wiring on the sub-board 132 arranged along the rear surface 30.

[0126] Therefore, there is no need for a harness connecting the right board and the left board, as would be the case if the connectors 142, 144 provided on the right side surface 42 were supported on a right board along the right side surface 42, and the connectors 146, 148 provided on the left side surface 90 were supported on a left board along the left side surface 90. This allows the unit device 10 to be manufactured at low cost.

[0127] In this embodiment, the one-side power supply connector 142 and the other-side power supply connector 146 are disposed on one side of the height center HC, which is located midway between the top surface 14 and the bottom surface 22 of the unit housing 12. The one-side signal connector 144 and the other-side signal connector 148 are disposed on the other side of the height center HC.

[0128] With this configuration, it is possible to further reduce the impact of the power supply on the electrical signals compared to, for example, a case where the power supply connectors 142, 146 and the signal connectors 144, 148 are located on one side of the height center HC.

[0129] In this embodiment, the one-side power supply connector 142 and the other-side power supply connector 146 are disposed closer to the top surface 14 of the unit housing 12 than the height center HC. The one-side signal connector 144 and the other-side signal connector 148 are disposed closer to the bottom surface 22 of the unit housing 12 than the height center HC.

[0130] In the unit device 10 according to this configuration, the signal transmission path can be formed, for example, on the shelf side that supports the unit housing 12. Therefore, compared to when the signal transmission path is formed on the top surface 14 side, it is possible to suppress, for example, the intrusion of noise generated by other devices into the signal transmission path.

[0131] The unit device 10 of this embodiment also includes a top surface-side connecting component 16A that extends from one of the top surface 14A of the first unit housing 12A as one unit housing or the top surface 14B of the second unit housing 12B as the other unit housing in the arrangement state 300, and can be arranged along the other of the top surface 14A of the first unit housing 12A or the top surface 14B of the second unit housing 12B. The unit device 10 includes a top surface-side guide groove 100 that is provided on the other top surface 14B and that guides the top surface-side protrusion 18A provided on the top surface-side connecting component 16A during connection, and that extends along the insertion / removal direction 20 of the one-surface-side connector 310 and the other-surface-side connector 312.

[0132] The unit device 10 includes a bottom-side connecting part 16B that extends from one of the bottom surfaces 22A of the first unit housing 12A and the second unit housing 12B in the arrangement state 300 and can be arranged along the other of the bottom surfaces 22A of the first unit housing 12A and the second unit housing 12B. The unit device 10 includes a bottom-side guide groove 120 that is provided on the other bottom surface 22B and that guides a bottom-side protrusion 18B provided on the bottom-side connecting part 16B when connected and that extends along the insertion / removal direction 20.

[0133] According to this configuration, a top surface side connecting component 16A extends from the top surface 14A of the first unit housing 12A, and a bottom surface side connecting component 16B extends from the bottom surface 22A of the first unit housing 12A. Furthermore, on the top surface 14A of the second unit housing 12B, a top surface side guide groove 100 for guiding the top surface side protrusion 18A of the top surface side connecting component 16A extends in the insertion / removal direction 20 of the one surface side connector 310 and the other surface side connector 312. Furthermore, on the bottom surface 22B of the second unit housing 12B, a bottom surface side guide groove 120 for guiding the bottom surface side protrusion 18B of the bottom surface side connecting component 16B extends in the insertion / removal direction 20 of the one surface side connector 310 and the other surface side connector 312.

[0134] When the first unit housing 12A and the second unit housing 12B are brought closer together, the top surface protrusion 18A of the top surface connecting part 16A provided on the top surface 14A of the first unit housing 12A is guided in the insertion / removal direction 20 along the top surface guide groove 100 provided on the top surface 14B of the second unit housing 12B. Furthermore, the bottom surface protrusion 18B of the bottom surface connecting part 16B provided on the bottom surface 22A of the first unit housing 12A is guided in the insertion / removal direction 20 along the bottom surface guide groove 120 provided on the bottom surface 22B of the second unit housing 12B. Then, the one surface connector 310 of the first unit housing 12A and the other surface connector 312 of the second unit housing 12B are connected to each other.

[0135] On the other hand, when the adjacently arranged first unit housing 12A and second unit housing 12B are moved away from each other, the top surface protrusion 18A of the top surface connecting part 16A provided on the top surface 14A of the first unit housing 12A is guided in the insertion / removal direction 20 along the top surface guide groove 100 provided on the top surface 14B of the second unit housing 12B. Also, the bottom surface protrusion 18B of the bottom surface connecting part 16B provided on the bottom surface 22A of the first unit housing 12A is guided in the insertion / removal direction 20 along the bottom surface guide groove 120 provided on the bottom surface 22B of the second unit housing 12B. Then, the one surface connector 310 of the first unit housing 12A and the other surface connector 312 of the second unit housing 12B are moved away from each other.

[0136] In this way, the unit device 10 can restrict the first unit housing 12A and the second unit housing 12B to move in the insertion / removal direction 20 when the one-side connector 310 and the other-side connector 312 are inserted or removed.

[0137] Therefore, when both unit housings 12A and 12B are moved relative to each other, it is possible to suppress the load acting on each connector 310, 312 compared to when, for example, first unit housing 12A is moved in a direction oblique to insertion / removal direction 20. This makes it possible to prevent malfunctions caused by the load acting on each connector 310, 312, and also makes it possible to improve the durability of each connector 310, 312.

[0138] More specifically, in order to increase the speed of data transmission, the unit device 10 of this embodiment uses SMD type connectors 144, 148. Each terminal of the SMD type connectors 144, 148 is soldered to printed wiring formed on the sub-board 132. For this reason, the SMD type connectors 144, 148 are less firmly fixed to the sub-board 132 than the DIP type connectors 142, 146, in which each terminal is soldered while inserted into a through-hole in the sub-board 132.

[0139] In this unit housing 12, if the connectors 144, 148 are inserted or removed obliquely with respect to the insertion / removal direction 20 when adjacent unit housings 12 are repeatedly disconnected, a large load is applied to the connectors 144, 148. This can cause problems such as the connectors 144, 148 floating from the sub-board 132.

[0140] Therefore, the unit device 10 restricts each unit housing 12A, 12B to move in the insertion / removal direction 20 when the unit housing 12 is disconnected, thereby making it possible to prevent problems such as each connector 144, 148 floating from the sub-board 132 from occurring.

[0141] Although the embodiments of the present invention have been described above, the above embodiments merely illustrate some of the application examples of the present invention, and it is not intended that the technical scope of the present invention be limited to the specific configurations of the above embodiments. [Explanation of symbols]

[0142] 10 Unit Equipment 12 unit chassis 14 Top 16 Connecting parts 16A Top side connecting part 16B Bottom connecting part 20 Insertion / extraction direction 22 bottom 28 Front 28-1 Right edge 28-2 Left edge 30 Back 30-1 Right edge 30-2 Left edge 42 Right side 90 left side 100 Top guide groove 120 Bottom guide groove 132 Sub-board 142 Power connector on one side 144 Signal connector on one side 146 Other side power connector 148 Other side signal connector 174 Crossing Direction 300 placement status 310 One-side connector 312 Other side connector HC Height Center

Claims

1. A unit device in which a one-side connector is provided on one side of a unit housing and an other-side connector is provided on the other side opposite to the one side, and in a state in which a plurality of the unit housings are arranged adjacent to each other, the one-side connector of one unit housing is connected to the other-side connector of the other unit housing, The one-side connector is configured to include a one-side power supply connector for supplying electric power, and a one-side signal connector for transmitting an electric signal, the one-side signal connector being separate from the one-side power supply connector, The other surface side connector includes a other surface side power supply connector connectable to the one surface side power supply connector, and a other surface side signal connector separate from the other surface side power supply connector and connectable to the one surface side signal connector. Unit equipment.

2. The unit device according to claim 1, the one surface constitutes one side surface connecting one edge portion of the front surface of the unit housing and one edge portion of the rear surface of the unit housing, the other surface constitutes another side surface connecting the other edge portion of the front surface and the other edge portion of the rear surface, the one-side power connector and the one-side signal connector are disposed on the rear side of the one side surface, the other surface side power connector and the other surface side signal connector are disposed on the rear side of the other surface, Unit equipment.

3. The unit device according to claim 2, a printed circuit board arranged along the rear surface and supporting the one-side power connector, the other-side power connector, the one-side signal connector, and the other-side signal connector; the printed circuit board electrically connects the one-surface power connector and the other-surface power connector, and electrically connects the one-surface signal connector and the other-surface signal connector. Unit equipment.

4. The unit device according to claim 1, the one-side power supply connector and the other-side power supply connector are disposed on one side of a center of height located midway between a top surface and a bottom surface of the unit housing, the one-surface signal connector and the other-surface signal connector are disposed on the other side of the height center; Unit equipment.

5. The unit device according to claim 4, the one-surface-side power connector and the other-surface-side power connector are disposed closer to the top surface of the unit housing than the height center, the one-surface signal connector and the other-surface signal connector are disposed closer to the bottom surface of the unit housing than the height center; Unit equipment.

6. The unit device according to any one of claims 1 to 5, a top surface side connecting part that extends from one of the top surface of the one unit housing or the top surface of the other unit housing in the arranged state and can be arranged along the other of the top surface of the one unit housing or the top surface of the other unit housing; a top surface guide groove that is provided on the other top surface and that guides a top surface protrusion provided on the top surface connecting component during connection and extends along the insertion / removal direction of the one surface side connector and the other surface side connector; a bottom surface side connecting part that extends from one of the bottom surfaces of the one unit housing or the other unit housing in the arranged state and is capable of being arranged along the other of the bottom surface of the one unit housing or the other unit housing; a bottom guide groove that is provided on the other bottom surface and that guides a bottom protrusion provided on the bottom connecting component during connection and extends along the insertion / removal direction; A unit device comprising:

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