Terminal Block

Abstract

The terminal block has a housing having a connection surface to which an electromagnetic relay can be connected. The housing has an installation groove that opens at the connection surface and extends toward the inside of the housing, and the installation groove has a first groove portion and a second groove portion that are adjacently arranged and connected to each other. The first groove portion has: a first narrow width portion, which is arranged near the connection surface; a wide width portion, which is arranged to be farther from the connection surface than the first narrow width portion; and a step portion, which is arranged at the boundary between the first narrow width portion and the wide width portion, and can limit the movement of the retaining component in the removal direction from the inside of the housing toward the outside of the housing. The second groove portion is configured to be able to be accommodated without elastically deforming the claw portion of the retaining component.

Description

Technical Field

[0001] The present disclosure relates to a terminal block to which, for example, an electromagnetic relay can be connected. Background Art

[0002] Patent document 1 discloses a substantially rectangular parallelepiped relay socket. In the relay socket, a relay can be connected to its upper surface. The connected relay is configured such that movement in a direction orthogonal to the upper surface of the relay socket is restricted by a plate-shaped retaining member having one end mounted on the side surface of the relay socket, thereby maintaining a connected state.

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Patent Application Publication No. 2007-323897 Summary of the invention

[0006] Problems to be solved by the invention

[0007] With the diversification of relay sockets in recent years, the mounting position of the holding member is restricted, and there are cases where one end of the holding member cannot be mounted on the side surface of the relay socket.

[0008] An object of the present disclosure is to provide a terminal block in which a holding member can be attached to and detached from a connection surface of a housing.

[0009] Means for solving problems

[0010] A terminal block of an example of the present disclosure includes a shell, which has a connection surface to which an electromagnetic relay can be connected, and a retaining component can be installed on the connection surface, the retaining component having: an elongated plate-shaped main body; an arm portion, which is provided at a first end portion in an extension direction of the main body and extends in a direction intersecting with the plate surface of the main body; and a claw portion, which is provided at a second end portion on the opposite side of the first end portion in the extension direction of the main body, extends in a direction away from the main body portion as it moves from the second end portion toward the first end portion, and can be elastically deformed in a direction approaching the main body portion, the retaining component can retain the electromagnetic relay in a state connected to the connection surface, wherein,

[0011] The housing has a mounting groove, which opens at the connection surface and extends toward the interior of the housing along a first direction intersecting the connection surface.

[0012] The mounting groove includes a first groove portion and a second groove portion, wherein the first groove portion and the second groove portion are capable of respectively accommodating the second end portion of the main body portion when the main body portion extends along the first direction and the arm portion extends along a second direction intersecting the first direction and the plate surface of the main body portion so as to be able to sandwich the connected electromagnetic relay together with the connecting surface, and the first groove portion and the second groove portion are adjacently arranged in a third direction intersecting the first direction and the second direction and are connected to each other,

[0013] The first groove portion has:

[0014] a first narrow width portion, which is arranged near the connecting surface in the first direction and can be accommodated in a state where the claw portion is elastically deformed;

[0015] a wide portion, which is arranged to be farther from the connection surface than the first narrow portion in the first direction and can be accommodated without elastically deforming the claw portion; and

[0016] a step portion, the step portion being provided at a boundary between the first narrow width portion and the wide width portion, contacting with a tip of the claw portion received in the wide width portion on the first end side, so as to limit movement of the holding member in a pulling-out direction, the pulling-out direction being a direction from the inside of the housing toward the outside of the housing in the first direction,

[0017] The second groove is configured to accommodate the claw without elastically deforming the claw, and by moving the holding member accommodated in the first groove to the second groove, the restriction of movement of the holding member in the removal direction by the step can be released.

[0018] Effects of the Invention

[0019] According to the terminal block, the housing has an installation groove that opens on the connection surface and extends toward the inside of the housing. The installation groove has a first groove portion and a second groove portion that are adjacently arranged in the third direction and connected to each other. The first groove portion and the second groove portion are respectively configured to respectively accommodate the second end of the main body portion in a state where the main body portion extends in the first direction and the arm portion extends in the second direction and can clamp the connected electromagnetic relay together with the connection surface. The first groove portion has: a first narrow width portion, which is arranged near the connection surface and can be accommodated in a state where the claw portion is elastically deformed; a wide width portion, which is arranged to be farther away from the connection surface than the first narrow width portion and can be accommodated without elastically deforming the claw portion of the retaining member; and a step portion, which is arranged at the boundary between the first narrow width portion and the wide width portion and can limit the movement of the retaining member. In addition, the second groove portion is configured to be accommodated without elastically deforming the claw portion, and the movement restriction based on the step portion can be released by moving the retaining member accommodated in the first groove portion to the second groove portion. Through such a structure, such a terminal block can be realized: the retaining member can be installed and removed on the connection surface of the housing. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a perspective view showing a terminal block according to one embodiment of the present disclosure.

[0021] Figure 2 yes Figure 1 Side view of the terminal block.

[0022] Figure 3 Is installed in Figure 1 A three-dimensional view of the retaining components of the terminal block.

[0023] Figure 4 yes Figure 1 Magnified top view of the terminal block.

[0024] Figure 5 It is along Figure 1 A cross-sectional view of line VV.

[0025] Figure 6 It is along Figure 4 A cross-sectional view taken along line VI-VI. DETAILED DESCRIPTION

[0026] Below, an example of the present disclosure is described according to the accompanying drawings. In addition, in the following description, terms indicating specific directions or positions are used as needed (for example, terms including "upper", "lower", "right", and "left"), but the use of these terms is to facilitate the understanding of the present disclosure with reference to the accompanying drawings, and the technical scope of the present disclosure is not limited by the meaning of these terms. In addition, the following description is essentially only illustrative and is not intended to limit the present disclosure, its application, or its use. Moreover, the drawings are schematic, and the ratios of various dimensions may not be consistent with reality.

[0027] like Figure 1 As shown, a terminal block 1 according to an embodiment of the present disclosure includes an insulating housing 10. As an example, the housing 10 is in a substantially rectangular box shape, and a plurality of connection terminals (not shown) are accommodated therein.

[0028] One of a pair of substantially rectangular surfaces of the housing 10 intersecting the height direction Z (ie, Figure 1 The upper surface 101 of the housing 10 is provided with a connection surface 11 and a plurality of openings 12. The connection surface 11 is arranged at the approximate center of the upper surface 101 of the housing 10 in the long side direction. The openings 12 are arranged on both sides of the connection surface 11 in the long side direction X of the upper surface of the housing 10. By inserting the external wiring into the housing 10 through the openings 12, the connection terminals inside the housing 10 are electrically connected to the external wiring.

[0029] In addition, the other of the pair of substantially rectangular surfaces of the housing 10 intersecting the height direction Z (ie, Figure 1 The bottom surface 102 of the middle housing 10 is configured to be able to hold a DIN rail standardized as the German Industrial Standard (DIN), for example.

[0030] A plurality of terminal holes 13 and mounting grooves 20 are provided on the connection surface 11. Each terminal hole 13 is configured to receive an electromagnetic relay 100 (see Figure 2 ) is inserted. By inserting the terminals of the electromagnetic relay 100 into the housing 10 through the terminal holes 13, the connection terminals inside the housing 10 are electrically connected to the terminals of the electromagnetic relay 100. The mounting groove 20 is configured to allow the holding member 300 (see Figure 2 ) is installed and disassembled on the connection surface 11.

[0031] Here, the retaining member 300 will be described. Figure 3As shown, the retaining component 300 has: a slender plate-shaped main body 310; an arm 320, which is arranged at a first end 311 in the extension direction of the main body 310; and a claw 330, which is arranged at a second end 312 on the opposite side of the first end 311 in the extension direction of the main body 310.

[0032] like Figure 3 As shown, a press-in protrusion 313 protruding away from the plate surface is provided at the second end 312 of the main body 310. With the help of the press-in protrusion 313, the second end 312 of the main body 310 is press-fitted and received in the first groove 21 of the mounting groove 20 described later.

[0033] like Figure 3 As shown, the claw portion 330 is provided on the plate surface of the second end portion 312 of the main body portion 310, and is configured to extend in a direction away from the main body portion 310 as it moves from the second end portion 312 toward the first end portion 311, and is elastically deformable in a direction close to the main body portion 310. In detail, the claw portion 330 is composed of an inclined portion 331 and a flat plate portion 332, wherein the inclined portion 331 extends in a direction away from the main body portion 310 as it moves from the second end portion 312 toward the first end portion 311, and the flat plate portion 332 extends from an end portion of the inclined portion 331 on the side close to the first end portion 311 of the main body portion 310 in the first direction Z, along the plate surface of the main body portion 310 toward the first end portion 311 of the main body portion 310.

[0034] The components of the holding member 300 in the state of being accommodated in the mounting groove 20 are arranged as follows.

[0035] like Figure 2 As shown, the main body 310 extends in a first direction (ie, a height direction Z of the housing 10 ) that intersects (eg, is orthogonal to) the connection surface 11 .

[0036] like Figure 2 As shown, the arm portion 320 is provided at the first end portion 311 of the main body portion 310, and extends along the second direction (i.e., the long side direction X of the upper surface 101 of the housing 10) intersecting the first direction Z and the plate surface of the main body portion 310. In detail, the arm portion 320 has a protrusion 321 protruding from the first end portion 311 of the main body portion 310 toward the second end portion 312 side, and contacts the electromagnetic relay 100 connected to the connection surface 11 by means of the protrusion 321. That is, the electromagnetic relay 100 connected to the connection surface 11 is held by being sandwiched between the connection surface 11 and the protrusion 321 of the arm portion 320 in the first direction Z.

[0037] like Figure 4As shown, the mounting groove 20 opens at the connection surface 11 and extends toward the inside of the housing 10 along the first direction Z. The mounting groove 20 includes a first groove portion 21 and a second groove portion 22 that are adjacently arranged and communicated with each other in the short side direction Y of the upper surface 101 of the housing 10. The first groove portion 21 and the second groove portion 22 are respectively configured to accommodate one end portion of the long side direction of the holding member 300.

[0038] like Figure 5 As shown, the first groove portion 21 has a first narrow portion 211, a wide portion 212, and a second narrow portion 213 arranged in series along the first direction Z. The first narrow portion 211 is arranged near the connecting surface 11 in the first direction Z. The wide portion 212 is arranged to be farther away from the connecting surface 11 than the first narrow portion 211 in the first direction Z. The second narrow portion 213 is arranged to be farther away from the connecting surface 11 than the wide portion 212 in the first direction Z. The first narrow portion 211 and the second narrow portion 213 each have a groove width W1 (i.e., the groove size in the second direction X) that can accommodate the second end portion 312 of the main body 310 while the claw portion 330 is elastically deformed. The wide portion 212 has a groove width W2 that can accommodate the second end portion 312 of the main body 310 without elastically deforming the claw portion 330.

[0039] A step portion 214 is provided at the boundary between the first narrow width portion 211 and the wide width portion 212. The step portion 214 is configured to contact the end of the claw portion 330 on the first end portion 311 side of the main body portion 310 (i.e., the end of the flat plate portion 332 in the first direction Z) when the claw portion 330 is accommodated in the wide width portion 212 and is not elastically deformed. As a result, the holding member 300 is restricted from moving in the extraction direction (i.e., Figure 5 The pulling-out direction is a direction from the inside of the housing 10 toward the outside of the housing 10 in the first direction Z.

[0040] An inclined portion 215 is provided between the wide portion 212 and the second narrow portion 213 , and is inclined so that the groove size in the second direction X decreases as the distance from the connecting surface 11 increases. The inclined portion 215 facilitates elastic deformation of the claw 330 when it moves from the wide portion 212 to the second narrow portion 213 .

[0041] like Figure 4 As shown, the second groove 22 has a groove width W3 that can accommodate the claw without elastic deformation. By moving the holding member 300 accommodated in the first groove 21 to the second groove 22, the movement restriction of the holding member 300 in the removal direction by the step 214 can be released.

[0042] like Figure 6As shown, at the boundary of the wide portion 212 with the second groove portion 22 in the third direction (i.e., the short side direction Y of the upper surface 101 of the housing 10) intersecting (e.g., orthogonal to) the first direction Z and the second direction X, a wall portion 216 is provided to restrict the movement of the claw portion 330 accommodated in the wide portion 212 in the third direction Y. The wall portion 216 extends from the step portion 214 through the wide portion 212 and the inclined portion 215 to the second narrow portion 213 in the first direction Z. With the wall portion 216, when the claw portion 330 is located in the wide portion 212 and the inclined portion 215, the holding member 300 cannot be moved toward the second groove portion 22, but when the claw portion 330 is located in the second narrow portion 213, the holding member 300 can be moved toward the second groove portion 22.

[0043] When the holding member 300 is mounted on the connection surface 11 of the housing 10, the holding member 300 is inserted into the first groove portion 21 of the mounting groove 20 from the second end portion 312 side, and is moved in the insertion direction from the outside of the housing 10 toward the inside of the housing 10 along the first direction Z. At this time, the holding member 300 is moved until the claw portion 330 is located at the wide portion 212. By arranging the claw portion 330 at the wide portion 212, the movement of the holding member 300 in the removal direction is restricted by the step portion 214, and the movement of the holding member 300 in the third direction Y is restricted by the wall portion 216.

[0044] When removing the holding member 300 attached to the connection surface 11 of the housing 10, the holding member 300 is further moved in the insertion direction until the claw portion 330 passes through the inclined portion 215 and is located at the second narrow width portion 213. Then, when the claw portion 330 reaches the second narrow width portion 213, the movement restriction of the holding member 300 in the third direction Y by the wall portion 216 is released, and the holding member 300 can be moved toward the second groove portion 22. By moving the holding member 300 to the second groove portion 22, the movement restriction of the holding member 300 in the removal direction by the step portion 214 is released.

[0045] According to the terminal block 1, the housing 10 has a mounting groove 20 that opens at the connection surface 11 and extends toward the inside of the housing 10. The mounting groove 20 has a first groove portion 21 and a second groove portion 22 that are adjacently arranged and connected to each other in the third direction Y. The first groove portion 21 and the second groove portion 22 are respectively configured to respectively accommodate the second end portion 312 of the main body portion 310 when the main body portion 310 of the retaining member 300 extends along the first direction Z and the arm portion 320 extends along the second direction X and can clamp the connected electromagnetic relay 100 together with the connection surface 11. The first groove portion 21 has: a first narrow width portion 211, which is arranged near the connection surface 11 and can accommodate the claw portion 330 of the retaining member 300 while elastically deforming; a wide width portion 212, which is arranged farther from the connection surface 11 than the first narrow width portion 211 and can accommodate the claw portion 330 without elastically deforming the claw portion 330; and a step portion 214, which is provided at the boundary between the first narrow width portion 211 and the wide width portion 212 and can limit the movement of the retaining member 300. In addition, the second groove portion 22 is configured to be able to accommodate the claw portion 330 without elastically deforming the claw portion 330, and the movement restriction based on the step portion 214 can be released by moving the retaining member 300 accommodated in the first groove portion 21 to the second groove portion 22. With such a structure, a terminal block 1 can be realized in which the retaining member 300 can be installed and removed from the connection surface 11 of the housing 10.

[0046] In addition, the first groove portion 21 also has a second narrow portion 213, which is arranged to be farther from the connection surface 11 than the wide portion 212, and can accommodate the second end 312 of the retaining member 300 in a state where the claw portion 330 is elastically deformed. A wall portion 216 that restricts the movement of the accommodated claw portion 330 is provided at the boundary between the wide portion 212 and the second groove portion 22, and the retaining member 300 accommodated in the first groove portion 21 can be moved toward the second groove portion 22 by moving the claw portion 330 from the wide portion 212 to the second narrow portion 213. With such a structure, it is possible to realize a terminal block 1 in which the retaining member 300 can be more reliably mounted on the connection surface 11 of the housing 10.

[0047] In addition, if Figure 2 As shown, in the terminal block 1, as an example, a pair of mounting grooves 20 are provided on the connection surface 11 and are arranged at intervals in the second direction X, and each terminal hole 13 is arranged between the pair of mounting grooves 20. In addition, when viewed from the first direction Z, each mounting groove 20 is arranged so that a center line CL passing through the center of a pair of side surfaces 103 of the housing 10 and extending along the second direction X passes through the center of the first groove portion 21 of each mounting groove 20 in the third direction Y. By configuring in this way, it is possible to realize a terminal block 1 that can more reliably hold the electromagnetic relay 100 connected to the housing 10 by using the holding member 300.

[0048] The first groove 21 only needs to include the first narrow portion 211, the wide portion 212, and the step portion 214, and the second narrow portion 213 and the wall portion 216 may be omitted. In the terminal block 1, the first groove 21 does not have a bottom surface, but may have one.

[0049] The holding member can be accommodated in the mounting groove 20 to hold the electromagnetic relay 100 connected to the housing 10. As the holding member, for example, a holding member 300 in which the press-fit protrusion 313 is omitted at the second end 312 of the main body 310 can be used, or a pair of holding members 300 with arms 320 connected to each other can be used.

[0050] In the above, various embodiments of the present disclosure have been described in detail with reference to the drawings, and finally various aspects of the present disclosure will be described. In addition, in the following description, reference numerals are also attached as an example.

[0051] The terminal block 1 of the first embodiment of the present disclosure includes a housing 10, which has a connection surface 11 to which an electromagnetic relay 100 can be connected, and a retaining component 300 can be installed on the connection surface 11, and the retaining component 300 has: an elongated plate-shaped main body 310; an arm 320, which is arranged at a first end 311 in the extension direction of the main body 310 and extends in a direction intersecting the plate surface of the main body 310; and a claw 330, which is arranged at a second end 312 on the opposite side of the first end 311 in the extension direction of the main body 310, extends in a direction away from the main body 310 as it moves from the second end 312 toward the first end 311, and can be elastically deformed in a direction approaching the main body 310, and the retaining component 300 retains the electromagnetic relay 100 in a state connected to the connection surface 11, wherein,

[0052] The housing 10 has a mounting groove 20 , which opens at the connection surface 11 and extends toward the interior of the housing 10 along a first direction Z intersecting the connection surface 11 .

[0053] The mounting groove 20 includes a first groove portion 21 and a second groove portion 22, and the first groove portion 21 and the second groove portion 22 are respectively capable of accommodating the second end portion 312 of the main body 310 when the main body 310 extends along the first direction Z and the arm portion 320 extends along the second direction X intersecting the first direction Z and the plate surface of the main body 310 and can sandwich the connected electromagnetic relay 100 together with the connecting surface 11, and the first groove portion 21 and the second groove portion 22 are adjacently arranged and communicated with each other in a third direction Y intersecting the first direction Z and the second direction X,

[0054] The first groove portion 21 has:

[0055] a first narrow width portion 211 disposed near the connecting surface 11 in the first direction Z and capable of being accommodated in a state where the claw portion 330 is elastically deformed;

[0056] The wide width portion 212 is arranged to be farther from the connecting surface 11 than the first narrow width portion 211 in the first direction Z, and can be accommodated without elastically deforming the claw portion 330; and

[0057] The step portion 214 is provided at the boundary between the first narrow width portion 211 and the wide width portion 212, and contacts the end of the claw portion 330 received in the wide width portion 212 on the side close to the first end portion 311, so as to limit the movement of the holding member 300 in the extraction direction, which is the direction from the inside of the housing 10 toward the outside of the housing 10 in the first direction Z.

[0058] The second groove 22 is configured to accommodate the claw 330 without elastically deforming the claw 330 . By moving the holding member 300 accommodated in the first groove 21 to the second groove 22 , the restriction on movement of the holding member 300 in the removal direction by the step 214 can be released.

[0059] According to the terminal block 1 of the first embodiment, it is possible to realize the terminal block 1 in which the holding member 300 can be attached to and detached from the connection surface 11 of the housing 10 .

[0060] In the terminal block 1 of the second aspect of the present disclosure,

[0061] The first groove portion 21 further includes a second narrow portion 213, which is arranged to be farther from the connecting surface 11 than the wide portion 212 in the first direction Z, and can accommodate the second end portion 312 of the holding member 300 in a state where the claw portion 330 is elastically deformed.

[0062] A wall portion 216 is provided at the boundary between the wide portion 212 and the second groove portion 22 in the third direction Y to limit the movement of the received claw portion 330 in the third direction Y.

[0063] By moving the claw portion 330 from the wide portion 212 to the second narrow portion 213 , the holding member 300 accommodated in the first groove portion 21 can be moved to the second groove portion 22 .

[0064] According to the terminal block 1 of the second embodiment, it is possible to realize the terminal block 1 in which the holding member 300 can be more reliably attached to the connection surface 11 of the housing 10 .

[0065] In the terminal block 1 of the third aspect of the present disclosure,

[0066] The housing 10 has a pair of side surfaces 103 extending in the first direction Z and arranged in parallel in the third direction Y.

[0067] The mounting groove 20 is arranged such that, when viewed from the first direction Z, a center line CL passing through the centers of the pair of side surfaces 103 and extending in the second direction X passes through the center of the first groove portion 21 in the third direction Y.

[0068] According to the terminal block 1 of the third aspect, it is possible to realize the terminal block 1 capable of more reliably holding the electromagnetic relay 100 connected to the housing 10 by the holding member 300 .

[0069] The terminal block 1 according to the fourth aspect of the present disclosure includes a pair of the mounting grooves 20 arranged in the second direction X at a distance therefrom.

[0070] According to the terminal block 1 of the fourth aspect, it is possible to realize the terminal block 1 capable of more reliably holding the electromagnetic relay 100 connected to the housing 10 by the holding member 300 .

[0071] It should be noted that, by appropriately combining any of the above-mentioned various embodiments or variations, the effects possessed by each can be exerted. In addition, the embodiments can be combined with each other, or the embodiments can be combined with each other, or the embodiments can be combined with the embodiments, and the features in different embodiments or embodiments can also be combined with each other.

[0072] The present disclosure has been fully described in relation to the preferred embodiments with reference to the accompanying drawings, but various changes and modifications may be made by those skilled in the art, and it should be understood that such changes and modifications are included within the scope of the present disclosure of the appended claims as long as they do not depart therefrom.

[0073] Possibility of Industrial Application

[0074] The terminal block of the present disclosure can be used as a relay socket, for example.

[0075] Description of symbols

[0076] 1 Terminal block

[0077] 10. Housing

[0078] 101 Upper surface

[0079] 102 Bottom

[0080] 11 Connection surface

[0081] 12 Opening

[0082] 13 Terminal hole

[0083] 20 Mounting slots

[0084] 21 First groove

[0085] 211 First narrow section

[0086] 212 Wide Width

[0087] 213 Second narrow section

[0088] 214 Steps

[0089] 215 inclined part

[0090] 216 Wall

[0091] 22 Second groove

[0092] 100 Electromagnetic relay

[0093] 300 Holding parts

[0094] 310 Main body

[0095] 311 First end

[0096] 312 Second end

[0097] 320 Arm

[0098] 321 Protrusion

[0099] 330 claws

[0100] 331 Inclined part

[0101] 332 Flat Panel

Claims

1. A terminal block, comprising a housing and a holding member, wherein the housing has a connection surface to which an electromagnetic relay can be connected, the holding member can be mounted on the connection surface and can hold the electromagnetic relay in a state connected to the connection surface, the holding member comprising: a slender plate-shaped main body; an arm portion, which is disposed at a first end portion in the extension direction of the main body portion and extends in a direction intersecting with a plate surface of the main body portion; and a claw portion, which is arranged at a second end portion on the opposite side of the first end portion in the extension direction of the main body portion, extends in a direction away from the main body portion as it moves from the second end portion toward the first end portion, and can be elastically deformed in a direction approaching the main body portion, wherein: The housing has a mounting groove, which opens at the connection surface and extends toward the interior of the housing along a first direction intersecting the connection surface. The mounting groove includes a first groove portion and a second groove portion, wherein the first groove portion and the second groove portion are capable of respectively accommodating the second end portion of the main body portion when the main body portion extends along the first direction and the arm portion extends along a second direction intersecting the first direction and the plate surface of the main body portion so as to be able to sandwich the connected electromagnetic relay together with the connecting surface, and the first groove portion and the second groove portion are adjacently arranged in a third direction intersecting the first direction and the second direction and are connected to each other, The first groove portion has: a first narrow width portion, which is arranged near the connecting surface in the first direction and can be accommodated in a state where the claw portion is elastically deformed; a wide portion, which is arranged to be farther from the connection surface than the first narrow portion in the first direction and can be accommodated without elastically deforming the claw portion; and a step portion, the step portion being provided at a boundary between the first narrow width portion and the wide width portion, contacting with a tip of the claw portion received in the wide width portion on the first end side, so as to limit movement of the holding member in a pulling-out direction, the pulling-out direction being a direction from the inside of the housing toward the outside of the housing in the first direction, The second groove is configured to accommodate the claw without elastically deforming the claw, and by moving the holding member accommodated in the first groove to the second groove, the restriction of movement of the holding member in the removal direction by the step can be released.

2. The terminal block according to claim 1, wherein: The first groove portion further includes a second narrow width portion, the second narrow width portion being arranged to be farther from the connection surface than the wide width portion in the first direction and capable of accommodating the second end portion of the holding member in a state where the claw portion is elastically deformed. A wall portion is provided at a boundary of the wide portion and the second groove portion in the third direction for limiting movement of the received claw portion in the third direction. By moving the claw portion from the wide width portion to the second narrow width portion, the holding member accommodated in the first groove portion can be moved to the second groove portion.

3. The terminal block according to claim 1 or 2, wherein: The housing has a pair of side surfaces extending in the first direction and arranged in parallel in the third direction. The mounting groove is arranged such that, when viewed from the first direction, a center line passing through centers of the pair of side surfaces and extending in the second direction passes through a center of the first groove portion in the third direction.

4. The terminal block according to claim 1 or 2, wherein: The terminal block includes a pair of the mounting grooves that are spaced apart from each other in the second direction.

5. The terminal block according to claim 3, wherein: The terminal block includes a pair of the mounting grooves that are spaced apart from each other in the second direction.

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