JP4929505B2 - Relay socket - Google Patents

Description

  The present invention relates to a relay socket that is mounted on a substrate on which electronic components and the like are mounted, and in which a relay is detachably mounted.

  In this type of relay socket, when the relay is removed from the mounting part, the hook is removed from the relay, and the relay is removed by pushing the bottom of the relay upward by the pressing piece provided at the hook base end. There are a type of relay socket (for example, refer to Patent Document 1) and a type of relay socket in which such a pressing piece is not provided and the relay is manually removed after the hook is removed from the relay.

  As shown in FIG. 17, the latter type of relay socket typically has a structure in which a fixing hook 3 is rotatably provided on a side portion 2 of the socket body 1. When the fixing hook 3 is attached to the socket body 1, the fixing hook 3 is elastically deformed and attached. More specifically, when the fixing hook 3 is detached from the socket body 1, as shown in FIG. 18 (a), the hook lower portion 3a is widened with a width w in the lateral direction. Next, as shown in FIG. 18B, when the hook lower portion 3a is fitted into the side portion 2, that is, when the pivot shaft 3b is fitted into the bearing portion 6 provided on the side portion 2, 3a becomes small by being deformed by the elastic force of the resin. Subsequently, as shown in FIG. 18 (c), when the fitting is completed, the hook lower part 3a is present in the side part 2 with a width w 'narrower than that before the fitting. At this time, the hook lower portion 3a is held by the bearing portion 6 by a restoring force for returning to the original size.

  When the relay 4 is mounted, the fixing hook 3 locks the relay at a position indicated by a solid line by a locking portion 3c positioned above the fixing hook 3. On the other hand, when the relay is removed, the locking portion 3c is removed from the relay 4, and the relay 4 is manually removed upward. At this time, the fixing hook 3 may fall between adjacent electronic components 5 as indicated by a broken line.

JP 2006-32285 A

  However, in the relay socket as described above, when the hook lower part 3a is fitted into the side part 2 of the socket body 1, it is necessary to elastically deform the hook lower part 3a to make it small, so that the fixing hook 3 is formed large in advance. That is, there was a problem of increasing the size. In addition, a force for elastically deforming the hook lower part 3a to reduce the hook lower part 3a is necessary, and the fixing hook 3 cannot be easily attached to the socket body 1. Further, even when the relay socket is mounted on the substrate and the relay is mounted, the fixing hook 3 can be detached from the socket body 1 by deforming the resin.

  Further, when it is necessary to remove the relay 4 mounted on the relay socket, when the locking portion 3c of the fixing hook 3 is removed from the relay 4, the fixing hook 3 is separated from the locking position and is adjacent. It has fallen on the board | substrate between these electronic components, and had the subject that it was difficult to pick up the hook 3 for fixing again from between electronic components.

  The present invention has been made in order to solve such a problem, and the object thereof is to easily provide the socket main body without increasing the size of the fixing hook, and by rotating the fixing hook. It is an object of the present invention to provide a relay socket in which the fixing hook cannot be removed from the socket body, and further, when the relay is removed, the fixing hook can be temporarily fixed at the rotation position.

In order to achieve the above object, the invention according to claim 1 of the present invention is characterized in that a longitudinal fixing hook for fixing a relay is rotatable on one side of a socket body to which the relay is mounted. In the relay socket provided and mounted on the board, a pair of pivot shafts that rotatably support the fixing hook are respectively projected from the inner side surface of one side of the socket body. The right-angle cross section has a shape in which a part of a circle is cut off, and the base end portion of the fixing hook includes a bearing portion into which the pivot shaft is fitted, and concave portions are formed on both side surfaces of the bearing portion. Each recess includes a bearing recess that houses the pivot shaft, an opening that opens to the outer peripheral surface of the bearing portion, and the other end that communicates with the bearing recess and guides the pivot shaft to the bearing recess. And the outer peripheral surface of the pivot shaft is the bearing. The parts in contact with the fixing hooks on the inner wall of which is configured to rotatably supported, as the relative rotational position of the opening relative to the pivot shaft that varies with rotation of the fixing hooks, the The pivot shaft is allowed to pass through the opening and has an attachment rotation position where the pivot shaft can be inserted into the bearing recess, and the rotation position of the opening is in a rotation position other than the attachment rotation position. If present, the pivot shaft is blocked from passing through the opening, and the mounting rotation position is within a rotation range in which the fixing hook is positioned below the substrate. It exists in

If it is the said structure, a hook for fixing is attached to a socket main body only in the attachment rotation position located below a board | substrate, and is removed. And since an opening part also rotates with rotation of a fixing hook, the pivot shaft accommodated in the bearing recessed part cannot pass an opening part. Therefore, after the fixing hook is attached to the socket body and mounted on the board, there is an effect that it cannot be removed from the socket body.
In addition, when the fixing hook is attached to the socket body, the pivot shaft only needs to be inserted from the opening, so that it is not necessary to cause elastic deformation with a large force as in the past, and the fixing hook can be easily attached to the socket body. Can be installed.
In addition, since the pivot shaft easily passes through the opening without being deformed by the elastic force of the resin and is fitted into the bearing recess, it is not necessary to provide a bending allowance for the fixing hook as in the prior art, that is, a large size There is also an effect that it can be easily provided in the socket main body without making it.

The invention according to claim 2 is the relay socket according to claim 1, wherein the bottom surface of the opening is inclined upward from the opening of the outer peripheral surface of the bearing portion toward the bearing recess. It has a surface .
The invention according to claim 3 is the relay socket according to claim 2, wherein the bottom surface of the bearing recess is at the bottom surface of the opening at the boundary position between the bottom surface of the bearing recess and the bottom surface of the opening. In contrast, the bottom surface of the opening portion is stepped inwardly, and the bottom surface of the opening is connected to the inclined surface and the flat surface reaching the bearing recess while maintaining the constant amount of protrusion on the outer side. The distance between the ends of the pair of pivot shafts is substantially the same as the distance between the flat surface on one side of the bearing portion and the flat surface on the other side. And
The invention according to claim 4 is the relay socket according to any one of claims 1 to 3, wherein either one of the outer peripheral surface of the bearing portion of the fixing hook and the socket body has an engaging protrusion. The other side is provided with an engaged portion that engages with the engaging protrusion, and the fixing hook extends from the locking position for locking the relay to the board mounting position positioned on the board. In this case, the engaging projection is engaged with the engaged portion and the fixing hook is temporarily fixed.

  With the above configuration, when the fixing hook is removed from the relay in a relay replacement operation or the like, it is temporarily set at a predetermined rotational position from the locking position for locking the relay to the board mounting position located on the board. It will be stopped. As a result, it is possible to prevent a situation in which it is difficult to pick up the fixing hook again from between the electronic components because the fixing hook falls on the substrate between neighboring electronic components as in the conventional example. it can.

The invention according to claim 5 is the relay socket according to claim 4 , wherein a plurality of engaging protrusions are provided on the outer peripheral surface of the bearing portion of the fixing hook at intervals in the circumferential direction, The main body is provided with an engaged portion that can be engaged with any of the plurality of engaging protrusions.

  With the above configuration, the temporary fixing position can be multistage, and the temporary fixing position can be selected according to the height position of the electronic component in the vicinity of the relay socket.

The invention according to claim 6 is the relay socket according to claim 4 or 5 , wherein the engaging protrusion provided on the outer peripheral surface of the bearing portion of the fixing hook has the fixing hook from the board mounting position. A first inclined surface that contacts the engaged portion when rotating to the locking position, and a first inclined surface that contacts the engaged portion when rotating from the locking position to the substrate mounting position. The second inclined surface has a larger inclination angle than the first inclined surface.

  With the above configuration, the temporarily fixed state can be firmly held, and when the fixing hook is rotated from the board mounting position to the locking position, the rotation operation can be performed without a sense of resistance. It becomes.

The present invention has the following effects.
(1) The fixing hook does not need to be elastically deformed with a large force as in the prior art, and can be easily attached to the socket body.
(2) After the fixing hook is attached to the socket body and mounted on the board, it cannot be removed from the socket body, ensuring safety.
(3) Since the pivot shaft easily passes through the opening without being deformed by the elastic force of the resin and is fitted into the bearing recess, it is not necessary to provide a bending allowance for the fixing hook as in the prior art. There is also an effect that it can be easily provided in the socket main body without making it.

  Hereinafter, the present invention will be described in more detail with reference to FIG. 1 to FIG. 15, but the present invention is not limited to the following best modes, and can be appropriately changed within the scope not changing the gist of the present invention. It is possible to implement.

  FIG. 1 is a front view showing a state in which the relay socket of the present invention is mounted on a substrate. The relay socket 10 is used by being mounted on a substrate 12 on which the electronic component 11 is mounted. The relay socket 10 includes a resin socket main body 30 to which the relay 40 is mounted, and a long resin fixing hook 20 that is rotatably provided at one side of the socket main body 30.

  2 is an exploded perspective view of the relay socket, FIG. 3 is a plan view of the socket body, and FIG. 4 is a cross-sectional view taken along line A1-A1 of FIG. A locking portion 21 for locking the relay 40 mounted on the socket body 30 is provided at the distal end portion of the fixing hook 20, and the proximal end portion of the fixing hook 20 has a substantially C-shaped outer shape. A bearing portion 22 is provided. The socket body 30 has a substantially rectangular parallelepiped shape, and includes a guide portion 31 that guides the relay 40 when the relay 40 is mounted and a mounting portion 32 that mounts the relay 40. A groove 33 into which the fixing hook 20 is fitted is provided in one side surface of the socket body 30. A pair of pivot shafts 34 and 34 projecting from the inner side surfaces of the groove 33 so as to pivotally support the fixing hook 20 are projected. The pair of pivot shafts 34, 34 are provided at the same height position.

  5 is a perspective view showing a state where the bearing portion 22 and the pivot shaft 34 are separated, FIG. 6 is a side view of the bearing portion 22, FIG. 7 is a side view of the pivot shaft 34, and FIG. 8 is B1 in FIG. FIG. 9 is a cross-sectional view taken along line B1-B2, and FIG. 9 is a cross-sectional view taken along line B2-B2 of FIG. On both side surfaces of the bearing portion 22, circular bearing concave portions 27 for accommodating the pivot shafts 34 are formed. The bearing recess 27 is formed with an opening 23 opened to the outside, and the pivot shaft 34 is guided to the bearing recess 27 through the opening 23. The bottom surface 26 of the opening 23 is a flat surface 26b slightly protruding from the bottom surface 24 of the bearing recess 27 to the side in FIG. 5 (upward or downward in FIG. 8), and is connected to the flat surface 26b. It is comprised with the taper-like inclined surface 26a as it goes to the side (right side of FIG. 8). Thus, by having the inclined surface 26 a as the bottom surface 26 of the opening 23, when the pivot shaft 34 is guided to the bearing recess 27, it serves as a guide. Further, by adopting a configuration in which the flat surface 26 b slightly protrudes from the bottom surface 24, a click feeling is obtained when the pivot shaft 34 is stored in the bearing recess 27, and the pivot shaft 34 is securely stored in the bearing recess 27. can do. These points will be described in detail later.

  On the other hand, the pivot shaft 34 accommodated in the bearing recess 27 has a circumferential shape in which the cross section perpendicular to the axis is larger than the lower semicircle by cutting an upper part of the circle. The maximum length L1 in the vertical direction in the cross section perpendicular to the pivot shaft 34 is set to be substantially the same as the interval L2 between the openings 23 (see FIG. 11 (1)). The diameter R1 of the cross section is set substantially the same as the diameter R2 of the inner periphery of the bearing recess 27 (see FIG. 11 (1)). With this configuration, the pivot shaft 34 is inserted into the bearing recess 27 through the opening 23, and the fixing hook 20 is turned to the socket body 30 without using elastic deformation as in the conventional example. Can be mounted freely.

  Here, the circumferential shape of the pivot shaft 34 and the lower semicircle are not used for the following reason. That is, the axial perpendicular cross-sectional shape of the pivot shaft 34 includes a first condition in which a part of a circle is cut and the maximum length in the vertical direction in the axial perpendicular cross-section is smaller than the diameter of the circle, and the pivot It is necessary to have the second condition of having an arc surface that can rotatably support the fixing hook 20 by the pivot shaft 34 in a state where the shaft 34 is housed in the bearing recess 27. If it is the said circumference body shape, while satisfy | filling the said 1st condition, the hook 20 for fixation can be rotated freely by circular arc surface 34A, 34B (refer FIG. 5, FIG. 7) extended from a lower semicircle. Since it can be supported, the second condition is also satisfied.

  Further, the distance L3 between the pivot shafts 34 facing each other is the same as the width L4 between the flat surfaces 26b on both sides of the bottom surface 26 of the opening 23 (see FIG. 12 (1)). As a result, when the pivot shaft 34 is inserted, the distal end surface of the pivot shaft 34 can come into light contact with the flat surface 26b, and a light resistance is felt. When the tip surface of the pivot shaft 34 is stored in the bearing recess 27 beyond the flat surface 26b, there is no sense of resistance, and it can be known that the pivot shaft 34 is securely stored in the bearing recess 27. It becomes possible.

  Further, an engagement protrusion 28 is provided on the outer peripheral surface of the bearing portion 22 so that the fixing hook 20 can be rotated a predetermined time from the locking position for locking the relay to the board mounting position positioned on the board. When in the moving position, the engaging protrusion 28 engages with the bottom surface 35 (corresponding to the engaged portion) of the groove 33 of the socket body 30 so that the fixing hook 20 is temporarily fixed. . The engagement protrusion 28 has a substantially triangular shape in a side view, and has a first inclined surface 28a on the opening 23 side and a second inclined surface 28b on the opposite side to the first inclined surface 28a. The second inclined surface 28b is formed with a larger inclination angle than the first inclined surface 28a.

  FIGS. 10 (1) to 10 (4) are diagrams showing each rotation state until the fixing hook 20 is attached to the socket body 30 and the relay 40 is locked, and FIGS. 11 (1) to 11 (4) are FIGS. ) To (4) are enlarged side views of the bearing portion 22 and the pivot shaft 34, and FIGS. 12 (1) to 12 (4) are cross-sectional views of FIGS. 11 (1) to 11 (4). 12 (1) is a cross-sectional view taken along line C1-C1 in FIG. 11 (1), FIG. 12 (2) is a cross-sectional view taken along line C2-C2 in FIG. 11 (2), and FIG. 11 (3) is a cross-sectional view taken along line C3-C3, and FIG. 12 (4) is a cross-sectional view taken along line C4-C4 in FIG. 11 (4). With reference to these drawings, the operation of attaching the fixing hook 20 to the socket body 30 and locking the relay 40 will be described.

  First, as shown in FIG. 10A, the fixing hook 20 is disposed so that the opening 23 of the bearing portion 22 faces the pivot shaft 34. The position of the opening 23 with respect to the pivot shaft 34 at this time corresponds to a position where the pivot shaft 34 is allowed to pass through the opening 23 (attachment rotation position). Next, as shown in FIG. 10 (2), the bearing portion 22 is fitted into the pivot shaft 34. More specifically, the pivot shaft 34 is inserted through the opening 23. At this time, the pivot shaft 34 is guided by the inclined surface 26a of the bottom surface 26, is positioned on the flat surface 26b, and is then fitted into the bearing recess 27 in the bearing portion 22 (FIG. 11 (2) and FIG. 12 (2)). When the pivot shaft 34 is inserted, the distal end surface of the pivot shaft 34 can come into light contact with the flat surface 26b, and a sense of resistance is felt. When the tip surface of the pivot shaft 34 is stored in the bearing recess 27 beyond the flat surface 26b, there is no sense of resistance, and it can be known that the pivot shaft 34 is securely stored in the bearing recess 27. It becomes possible.

  Next, the fixing hook 20 is rotated to a position that is substantially horizontal with the socket body 30 (see FIG. 10 (3)). Further, the fixing hook 20 is substantially perpendicular to the socket body 30, that is, mounted. Then, the relay is rotated to a position where the relay is locked (locking position, see FIG. 10 (4)). The relative rotational positions of the pivot shaft 34 and the opening 23 at this time are shown in FIGS. 11 (3) to 11 (4). As is clear from FIGS. 11 (3) to (4), the pivot shaft 34 accommodated in the bearing recess 27 is prevented from passing through the opening 23. As described above, the pivot shaft 34 is allowed to pass through the opening 23 as the pivot position of the opening 23 accompanying the pivot of the fixing hook 20, and the pivot shaft 34 can be inserted into the bearing recess 27. When the pivoting position of the opening 23 is provided at a pivotal position other than the pivoting position, the pivot shaft 34 cannot pass through the opening 23. Moreover, the mounting rotation position is within a rotation range where the fixing hook 20 is positioned below the substrate.

  When the fixing hook 20 is rotated to the locking position for locking the relay 40, the pivot shaft 34 can pass through the opening 23 as shown in FIGS. 11 (4) and 12 (4). It has become. However, since the end of the bearing portion 22 is sealed by the groove bottom surface 35, the pivot shaft 34 cannot pass through the opening 23. In other words, after the relay socket with the fixing hook 20 attached is mounted on the substrate, the fixing hook 20 cannot be removed from the socket body 30.

Next, the function of the engagement protrusion 28 will be described.
FIGS. 13 (1) to (4) show how the fixing hook 20 rotates when the relay socket of the present invention is mounted on a substrate. FIGS. 14 (1) to (4) show FIGS. ) To (4) show enlarged sectional views of the bearing portion 22 and the pivot shaft 34 in each step.
When the relay 40 is mounted, the fixing hook 20 is tilted on the substrate 12 as shown in FIG. The position of the fixing hook 20 at this time is defined as a board mounting position. At this time, the engaging protrusion 28 of the fixing hook 20 contacts the lower part on the socket body 30 (hatched portion) side as shown in FIG. It is not in a state.

  Next, as shown in FIG. 13 (2), the fixing hook 20 is rotated toward the relay 40. At this time, as shown in FIG. 14 (2), the first inclined surface 28 a of the engagement protrusion 28 comes into contact with the lower part on the socket body 30 side.

  Next, as shown in FIG. 13 (3), the fixing hook 20 is further rotated toward the relay 40. At this time, as shown in FIG. 14 (3), since the first inclined surface 28a of the engaging protrusion 28 is a gentle inclined surface, the engaging protrusion 28 is formed at the corner on the lower side of the socket body 30 by the elastic force of the resin. Over. Further, the fixing hook 20 is further rotated toward the relay 40 to bring the fixing hook 20 into contact with the relay 40 as shown in FIG. In this state, the locking portion 21 of the fixing hook 20 is locked to the relay 40 and the relay 40 is fixed.

  On the other hand, when the relay 40 is removed, the fixing portion 20 of the fixing hook 20 is removed from the relay 40, so that the fixing hook 20 rotates toward the board mounting position, and FIGS. As shown in 3), the second inclined surface 28b of the engaging projection 28 contacts the bottom of the socket body 30. At this time, since the second inclined surface 28b has a large inclined surface, the engaging projection 28 is firmly engaged with the bottom of the socket body 30, and the fixing hook 20 is temporarily fixed. Thus, the fixing hook 20 is firmly temporarily fixed at a predetermined rotation position between the board mounting position and the locking position. Thereby, the fixing hook 20 does not fall between electronic components in the vicinity of the relay socket, and after the relay 40 is replaced, the fixing hook 20 can be easily gripped and rotated again to the locking position. It becomes easy.

  The engagement protrusion 28 is not limited to the above configuration. For example, as shown in FIG. 15A, a plurality of engagement protrusions 28 may be provided on the outer peripheral surface of the bearing portion 22 at intervals in the circumferential direction. If it does in this way, a temporary stop position can be made multistage and it will become possible to select a temporary stop position according to the height position of the electronic parts near a relay socket.

Further, as shown in FIG. 15B, the shape of the engagement protrusion 28 may be a substantially semi-cylindrical shape, or may be another shape. In short, when the fixing hook 20 rotates from the board mounting position to the locking position, the lower part on the socket body 30 side can be easily crossed using the elastic force of the resin, and conversely, the fixing hook 20 When rotating from the locking position to the board mounting position, any shape may be used as long as it can be engaged with the lower part on the socket body 30 side to maintain the temporarily fixed state.
Further, as shown in FIG. 15C, a structure in which the engagement protrusion 28 is provided on the socket body 30 side may be employed. In this case, the engaging hook 20 engages with the engaging protrusion 28 on the outer peripheral surface of the bearing portion 22 so that the fixing hook 20 can be temporarily fixed between the locking position and the board mounting position. It is desirable that a recess 29 having substantially the same shape as the mating protrusion 28 is provided.

(Other matters)
(1) Although the locking portion 21 provided on the fixing hook 20 has a protruding shape, in the relay socket according to another aspect of the present invention, if the mounted relay can be locked, for example, a hook shape or the like It may have any shape. Moreover, although the groove | channel 33 is recessedly provided in the one side surface of a socket main body, you may be recessedly provided in the both sides | surfaces. In this case, it is possible to have a structure in which the pivot shaft 34 and the fixing hook 20 are similarly provided in the grooves on both side surfaces.

(2) The cross section perpendicular to the axis of the pivot shaft 34 is not limited to the above embodiment. As described above, the axial perpendicular cross-sectional shape of the pivot shaft 34 is a first condition in which a part of a circle is cut and the longitudinal maximum length in the axial perpendicular cross-section is smaller than the diameter of the circle, and It is necessary to have the second condition of having an arc surface that can pivotally support the fixing hook 20 by the pivot shaft 34 in a state where the pivot shaft 34 is housed in the bearing recess 27. It becomes. As long as this condition is satisfied, the shape is not limited. For example, the shape shown in FIG. 16 (1) may be sufficient, and the shape shown in FIG. 16 (2) may be sufficient.

  The present invention can be suitably implemented in a relay socket that is mounted on a substrate on which electronic components are mounted and in which a relay is detachably mounted.

The front view which shows the state in which the relay socket of this invention was mounted in the board | substrate. The exploded perspective view of a relay socket. The top view of a socket main body. FIG. 4 is a cross-sectional view taken along line A1-A1 in FIG. 3. The perspective view which shows the state from which the bearing part and the pivot shaft were isolate | separated. The side view of a bearing part. The side view of a pivot. FIG. 7 is a cross-sectional view taken along line B1-B1 of FIG. B2-B2 arrow directional cross-sectional view of FIG. The figure which shows each rotation state until it attaches a fixing hook to a socket main body, and latches a relay. 11 (1) to (4) are enlarged side views of the bearing portion and the pivot shaft in FIGS. 10 (1) to (4). 12 (1) to 12 (4) are cross-sectional views of FIGS. 11 (1) to 11 (4). FIG. 12 (1) is a cross-sectional view taken along the line C1-C1 in FIG. ) Is a cross-sectional view taken along line C2-C2 in FIG. 11 (2), FIG. 12 (3) is a cross-sectional view taken along line C3-C3 in FIG. 11 (3), and FIG. 12 (4) is FIG. C4-C4 line arrow sectional drawing. The figure which shows a mode that a fixing hook rotates, when a relay socket is mounted in a board | substrate. 14 (1) to (4) are enlarged sectional views of the bearing portion and the pivot shaft corresponding to the respective steps of FIGS. 13 (1) to (4). The figure which shows the modification of an engaging protrusion. The figure which shows the shape of another pivot. The side view of the conventional relay socket. The figure which shows the process of attaching the hook for fixing to the socket main body in the conventional relay socket.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10: Relay socket 11: Electronic component 12: Board | substrate 20: Fixing hook 21: Locking part 22: Bearing part 23: Opening part 27: Bearing recessed part 28: Engagement protrusion 29: Depression 30: Socket main body 31: Guide part 32 : Mounting part 33: Groove 34: Pivot shaft 35: Groove bottom 40: Relay

Claims (6)

In one side part of the socket main body to which the relay is mounted, a longitudinal fixing hook for fixing the relay is rotatably provided.
A pair of pivot shafts for pivotally supporting the fixing hooks are respectively provided on the inner side surface of one side of the socket body, and the axial perpendicular section of the pivot shaft has a shape in which a part of a circle is cut off. Have
A bearing portion into which the pivot shaft is fitted is provided at a base end portion of the fixing hook, and concave portions are formed on both side surfaces of the bearing portion, and each concave portion houses the pivot shaft. A bearing recess and an opening having one end opened on the outer peripheral surface of the bearing portion and the other end communicating with the bearing recess and guiding the pivot shaft to the bearing recess;
The outer peripheral surface of the pivot shaft is configured to abut against the inner wall of the bearing recess to rotatably support the fixing hook,
As the relative rotation position of the opening with respect to the pivot shaft that changes with the rotation of the fixing hook, the pivot shaft is allowed to pass through the opening, and the pivot shaft is inserted into the bearing recess. When the rotation position of the opening is located at a rotation position other than the attachment rotation position, the pivot shaft is prevented from passing through the opening. And
The relay socket according to claim 1, wherein the mounting rotation position is in a rotation range where the fixing hook is positioned below the substrate. 2. The relay socket according to claim 1 , wherein the bottom surface of the opening has an inclined surface that is inclined upward from the opening of the outer peripheral surface of the bearing portion toward the bearing recess . At the boundary position between the bottom surface of the bearing recess and the bottom surface of the opening, the bottom surface of the bearing recess is stepped inwardly with respect to the bottom surface of the opening,
The bottom surface of the opening is composed of the inclined surface and a flat surface that continues to the inclined surface and reaches the bearing recess while maintaining a constant amount of protrusion on the outer side.
The distance between the ends of the pair of pivot shafts is substantially the same as the distance between the flat surface on one side of the bearing portion and the flat surface on the other side. The described relay socket. Either one of the outer peripheral surface of the bearing portion of the fixing hook and the socket body is provided with an engaging protrusion, and the other is provided with an engaged portion that engages with the engaging protrusion.
When the fixing hook is positioned at a predetermined rotation position from the locking position where the relay is locked to the board mounting position located on the board, the engaging protrusion engages with the engaged part. The relay socket according to claim 1, wherein the fixing hook is temporarily fixed . A plurality of engaging protrusions are provided on the outer peripheral surface of the bearing portion of the fixing hook at intervals in the circumferential direction, and the engaged portion is engageable with any of the plurality of engaging protrusions on the socket body. The relay socket according to claim 4, wherein the relay socket is provided. The engaging protrusion provided on the outer peripheral surface of the bearing portion of the fixing hook includes a first inclined surface that contacts the engaged portion when the fixing hook rotates from the substrate mounting position to the locking position; The fixing hook has a second inclined surface that contacts the engaged portion when rotating from the locking position to the substrate mounting position, and the second inclined surface is more than the first inclined surface. 6. The relay socket according to claim 4, wherein the inclination angle is large.