JP7195589B2 - Fixture - Google Patents

Description

The present disclosure relates to fasteners.

A technique is known in which, when fixing a second electronic circuit board to a first electronic circuit board, a spacer is interposed between the two electronic circuit boards to secure a gap between the two electronic circuit boards. (See Patent Document 1, for example).

Japanese Patent No. 4503155

However, since the spacer described in Patent Document 1 is configured to be fixed using screws, there is a problem that it takes time and effort to attach the spacer.
In one aspect of the present disclosure, it is desirable to provide a fixture that can fix one member to the other member with a gap between the two members, and that can reduce the time and effort required for fixing work.

One aspect of the present disclosure is a fixture that is surface-mounted on a first member and configured to fix one of the first member and the second member to the other by holding the second member. It has a base portion, a spacer portion, a contact portion, and a retaining portion. The base has a mating surface that is soldered to the first member when the fixture is surface mounted to the first member. The spacer portion is provided between the base portion and the contact portion and configured to ensure a gap between the base portion and the contact portion. The contact portion has a contact surface directed in a direction opposite to the joint surface, and is configured to contact the second member at the contact surface when the fixture holds the second member. The retaining portion is configured to be caught by the second member at a location on the opposite side of the contact surface with the second member interposed therebetween so as to suppress displacement of the second member in a direction away from the contact surface.

According to the fixture configured in this way, the fixture is surface-mounted on the first member. Therefore, the process of attaching the fixture to the first member can be automated, and the labor required for the process can be reduced. Further, in the step of holding the second member by the fixture, the second member is brought into contact with the contact surface of the contact portion, and the retaining portion is hooked on the second member at a location on the opposite side of the contact surface with the second member interposed therebetween. By doing so, it is possible to prevent the second member from being displaced in the direction away from the contact surface. In this state, a space is secured by the spacer portion between the base portion and the contact portion. Therefore, compared to the technique of securing a gap between the two members using spacers and screws, it is possible to reduce the labor involved in securing a gap between the two members and fixing one member to the other member. be able to.

FIG. 1A is a plan view showing an example of the usage state of the fixture of the embodiment. FIG. 1B is a cross-sectional view taken along the line IB--IB in FIG. 1A. FIG. 2A is a perspective view of the fixture of the embodiment as seen from the front right upper side. FIG. 2B is a perspective view of the fixture of the embodiment as seen from the left rear lower side. FIG. 3A is a plan view of the fixture of the embodiment. FIG. 3B is a front view of the fixture of the embodiment. FIG. 3C is a right side view of the fixture of the embodiment. FIG. 3D is a rear view of an embodiment fixture. FIG. 3E is a bottom view of an embodiment fixture. FIG. 4A is an explanatory diagram showing a state where the second member is at the first position. FIG. 4B is an explanatory diagram showing a state in which the second member is in the process of being displaced from the first position to the second position. FIG. 4C is an explanatory diagram showing a state in which the second member is in the second position. FIG. 4D is an explanatory diagram showing a state in which the second member is restrained from being displaced from the second position to the first position.

The fasteners described above will now be described with reference to exemplary embodiments.
In the present embodiment, description will be made using the front, back, left, right, up and down directions shown in the drawing. Each of these directions is the direction in which the part appearing in the front view of the fixture (see FIG. 3B) is oriented, the direction in which the part appearing in the rear view (see FIG. 3D) is oriented, and the left side view (see FIG. 3D). The left side view is symmetrical with the right side view.) is oriented to the left, the right side view (see FIG. 3C) is oriented to the right, and the top view (see FIG. 3A) ) is defined as the top, and the bottom view (see FIG. 3E) is defined as the bottom.

However, each of these directions is merely a direction defined for simply explaining the relative positions of the parts that make up the fixture. Thus, it is uncertain in what direction the fixture is oriented, such as when the fixture is in use.

[Configuration of fixture]
As shown in FIGS. 1A and 1B, the fixture 1 is surface-mounted on a first member 51 (a first electronic circuit board in this embodiment) and a second member 52 (in this embodiment). is a second electronic circuit board), one of the first member 51 and the second member 52 (the second member 52 in the present embodiment) is held by the other (the second member 52 in the present embodiment). 1st member 51.) is comprised so that fixation is possible. As shown in FIGS. 2A, 2B, 3A, 3B, 3C, 3D, and 3E, the fixture 1 has a base portion 11, a spacer portion 13, a contact portion 15, a retaining portion 17, and a protruding piece 19. .

The base portion 11, the spacer portion 13, the contact portion 15, the retaining portion 17, and the protruding piece 19 are integrally formed of a thin metal plate. The thin plate constituting the fixture 1 is press-worked to form a first bent portion 21, a second bent portion 22, and a third bent portion 21, which have centers of curvature parallel to each other, as shown in FIG. 3C. A bending point 23, a fourth bending point 24, a fifth bending point 25, a sixth bending point 26 and a seventh bending point 27 are provided. A convex portion 29 is provided at the fifth bending portion 25 .

The base portion 11 is a portion on the opposite side of the spacer portion 13 with the first bending portion 21 interposed therebetween. The lower surface of the base portion 11 serves as a joint surface 11A that is soldered to the first member 51 when the fixture 1 is surface-mounted to the first member 51 .

The spacer portion 13 is a portion between the first bent portion 21 and the second bent portion 22, and in this portion, the plate thickness direction of the thin plate is oriented in the front-rear direction in the figure. The spacer portion 13 is provided between the base portion 11 and the contact portion 15 to secure a gap between the base portion 11 and the contact portion 15 .

The contact portion 15 is a portion between the second bending portion 22 and the third bending portion 23, and in this portion, the plate thickness direction of the thin plate is oriented in the vertical direction in the figure. The contact portion 15 is arranged at a position facing the base portion 11 across a gap. The contact portion 15 has a contact surface 15A directed in the opposite direction to the joint surface 11A. The contact portion 15 contacts the second member 52 at the contact surface 15A when the fixture 1 holds the second member 52 . Further, when the fixture 1 is arranged on the first member 51 by an automatic mounting machine, the contact surface 15A is also used as a suction surface to be sucked by a suction nozzle of the automatic mounting machine.

The retaining portion 17 is formed of a thin plate located on the side opposite to the contact portion 15 with the third bent portion 23 interposed therebetween. More specifically, the retaining portion 17 has a first portion 171, a second portion 172, a third portion 173, and the convex portion 29 described above. The first portion 171 is the portion between the third bending point 23 and the fourth bending point 24 . The second portion 172 is the portion between the fourth fold 24 and the fifth fold 25 . The upper surface of the second portion 172 serves as a guide surface 17A. Details of the guide surface 17A will be described later. The third portion 173 is a portion on the opposite side of the second portion 172 across the fifth bending portion 25 .

The retaining portion 17 is configured to be hooked on the second member 52 by bringing the third portion 173 into contact with the second member 52 at a location opposite to the contact surface 15A with the second member 52 interposed therebetween. . Thereby, when the second member 52 is held between the retaining portion 17 and the contact portion 15, the second member 52 can be prevented from being displaced away from the contact surface 15A.

The protruding piece 19 is composed of a thin plate located on the opposite side of the base 11 with the sixth bent portion 26 interposed therebetween. A seventh bending portion 27 is included in the projecting piece 19 . The protruding piece 19 is configured to contact the contact portion 15 in advance at the leading end in the protruding direction. As a result, when a force acts on the contact portion 15 from the second member 52 side, the force can be received by both the spacer portion 13 and the projecting piece 19, and the buckling of the spacer portion 13 can be suppressed. can. The projecting piece 19 may contact the contact portion 15 in advance, or may be configured to contact the contact portion 15 when the contact portion 15 is displaced toward the base portion 11 .

Holes 31 are formed in the base portion 11 and the spacer portion 13 at positions corresponding to the portions where the projecting pieces 19 are cut and raised. Therefore, it is possible to mount the fixture 1 so as to straddle the electronic component mounted on the first member 51 using the hole 31 . Thereby, the mounting area of the electronic components and the mounting area of the fixture 1 can be overlapped, and the mounting density of these components can be improved.

The fixture 1 configured as described above has, for example, as shown in FIGS. can be held. In this embodiment, the first connector 61 is mounted on the upper surface 51A of the first member 51, and the second connector 62 is mounted on the lower surface 52B of the second member 52. As shown in FIG. The first connector 61 and the second connector 62 are connected to each other, thereby connecting the electronic circuit of the first member 51 and the electronic circuit of the second member 52 . The fixture 1 is in contact with three locations, ie, the upper surface 51A of the first member 51, the lower surface 52B of the second member 52, and the upper surface 52A of the second member 52, which should have a ground potential. connected to. At this time, between the first member 51 and the second member 52, both the spacer portion 13 and the protruding piece 19 serve as a conduction path, so the increase in impedance is suppressed compared to the case where only a single conduction path is configured. can increase the effectiveness of

When attaching the second member 52 between the two fixtures 1 , the second member 52 is displaced downward in the drawing to push the second member 52 between the two fixtures 1 . At this time, the end of the second member 52 contacts the guide surface 17A of the retainer 17 . When the second member 52 is pushed from the first position (see FIG. 4A) in contact with the guide surface 17A to the second position (see FIG. 4C) in contact with the contact surface 15A, the guide surface 17A 52, it swings from the initial position (see FIG. 4A) to the retracted position (the position indicated by the solid line in FIG. 4B) while sliding relative to the second member 52. This allows the second member 52 to be displaced to the second position.

When the guide surface 17A swings between the initial position and the retracted position, the range from the spacer portion 13 to the retaining portion 17 via the contact portion 15 elastically deforms and swings as shown in FIG. 4B. do. As a result, the spring length of the swinging portion can be increased compared to the case where only the retaining portion 17 is elastically deformed. can be easily displaced to the retracted position.

Further, when the guide surface 17A swings between the initial position and the retracted position, the projecting piece 19 swings against the contact portion 15 when the range from the spacer portion 13 to the retaining portion 17 via the contact portion 15 swings. While sliding relative to each other, the contact portion 15 is elastically deformed and displaced to a position where the displacement of the contact portion 15 is not hindered (the position indicated by the solid line in FIG. 4B). Therefore, the projecting piece 19 does not hinder the displacement of the contact portion 15 .

It should be noted that even if for some reason the second member 52 exerts an excessive force on the guide surface 17A of the retaining portion 17, the retaining piece 17 swings significantly clockwise in FIG. 4B. In this case, the protruding piece 19 swings counterclockwise in FIG. 4B as the retaining piece 17 swings. Then, when the retaining piece 17 and the projecting piece 19 reach the position indicated by the phantom line in FIG. The pieces 19 are brought into a state of blocking each other's rocking motion. As a result, the retaining piece 17 can be prevented from further swinging clockwise from the position indicated by the phantom line in FIG. 4B.

When the second member 52 is placed at the second position (see FIG. 4C), the protruding piece 19 functions as a support that supports the contact portion 15 from below, as in FIG. 4C. Therefore, for example, even when a force is generated to push the second member 52 downward, the contact portion 15 can be supported by both the spacer portion 13 and the projecting piece 19 . Therefore, it is possible to suppress an excessive load from being applied only to the spacer portion 13, and it is possible to suppress deformation of the spacer portion 13 and the protruding piece 19.

On the other hand, for example, when some unexpected external force is applied to the second member 52 and the second member 52 is about to be pulled upward from between the two fixtures 1, the second member 52 is moved to the second position (Fig. 4C.) to the first position (see FIG. 4A.), as shown in FIG. Suppress displacement to position. At this time, a force acts to lift the convex portion 29 upward in the range from the spacer portion 13 to the retaining portion 17 via the contact portion 15 . However, the force acting in such a direction does not include the component force acting in the direction of displacing the guide surface 17A from the initial position to the retracted position, or even if it does, it is very small. Therefore, the state in which the convex portion 29 is caught by the second member 52 is maintained, and the second member 52 can be prevented from coming off from between the two fixtures 1 .

On the other hand, when removing the second member 52 from between the two fixtures 1 during maintenance work or the like, the operator applies force to the upper end of the fixture 1 to move the guide surface 17A from the initial position to the retracted position. By displacing it, the second member 52 can be removed from between the two fixtures 1 . At this time, the force applied to the upper end of the fixture 1 by the worker may be a weak force equivalent to that in the case of attaching the second member 52 between the two fixtures 1, so the worker can easily attach the second member 52 to the two fixtures. can be removed from between the two fixtures 1.

[effect]
According to the fixture 1 as described above, since the fixture 1 is surface-mounted on the first member 51, the process of attaching the fixture 1 to the first member 51 can be automated, and manual work can be achieved. can be reduced, and the labor required for the process can be reduced. In addition, in the step of holding the second member 52 in the fixture 1, the second member 52 is brought into contact with the contact surface 15A of the contact portion 15, and the second member 52 is sandwiched at a point opposite to the contact surface 15A. By hooking the portion 17 on the second member 52, the displacement of the second member 52 away from the contact surface 15A can be suppressed. In this state, a space is secured by the spacer portion 13 between the base portion 11 and the contact portion 15 . Therefore, even if the process is manual work, compared to the technique of securing a gap between the two members using a spacer and a screw, it is possible to secure a gap between the two members and It is possible to reduce the labor involved in the work of fixing the other member. In addition, since there is room for automation in the process of holding the second member 52 in the fixture 1, if this process is also automated, the manual work can be further reduced, and the labor required for this process can be reduced.

In addition, in the case of this embodiment, through the fixture 1, the upper surface 51A of the first member 51, the lower surface 52B of the second member 52, and the upper surface of the second member 52 can be electrically connected at three locations. Therefore, with a single fixture 1, it is possible to take ground measures corresponding to the above-described three locations.

In addition, in the case of this embodiment, when the guide surface 17A is displaced from the initial position to the retracted position, the range from the spacer portion 13 to the retaining portion 17 via the contact portion 15 swings, so the guide surface can be easily moved. 17A can be retracted to the retracted position, and on the other hand, when the second member 52 is displaced upward in the drawing, the range from the spacer portion 13 to the retaining portion 17 via the contact portion 15 swings. Therefore, it is possible to prevent the second member 52 from coming off the fixture 1 .

[Other embodiments]
As described above, the fixture of the present disclosure has been described with reference to exemplary embodiments, but the above-described embodiments are merely examples of one aspect of the present disclosure. That is, the present disclosure is not limited to the exemplary embodiments described above, and can be embodied in various forms without departing from the technical spirit of the present disclosure.

For example, in the above embodiment, two fixtures 1 are surface-mounted to the first member 51, and the second member 52 is held between the two fixtures 1. Depending on the shape of the sheath, three or more fixtures 1 may be surface-mounted on the first member 51 and the second member 52 may be held by the three or more fixtures 1 .

Alternatively, one fixture 1 may be surface-mounted on the first member 51 so that the fixture 1 cooperates with members other than the fixture 1 to hold the second member 52 . For example, in the above-described embodiment, since the first connector 61 and the second connector 62 are provided, the first connector 61 and the second connector 62 are connected to one fixture 1 . It may be configured to hold two members 52 .

Further, in the above embodiment, the second member 52 is held by the fixture 1 surface-mounted on the first member 51 , but the first member 51 on which the fixture 1 is surface-mounted is replaced by the second member 52 . The fixture 1 can also be used when attaching to the . For example, when the electronic circuit board is to be arranged along the panel, the fixture 1 is surface-mounted on the electronic circuit board, and the fixture 1 is inserted into the mounting hole provided in the panel to hold the panel. Thus, the electronic circuit board can be attached to the panel. That is, it is sufficient that one of the first member 51 and the second member 52 is held with respect to the other.

In addition to the above, the function realized by one component in the above embodiment may be configured to be realized by a plurality of components. Moreover, the function realized by a plurality of components may be realized by a single component. Also, part of the configuration of the above embodiment may be omitted.

[supplement]
Note that, as is clear from the exemplary embodiments described above, the fixture of the present disclosure may further include the following configurations.

In one aspect of the present disclosure, the base portion, the spacer portion, the contact portion, and the retaining portion may be integrally formed of a thin metal plate, and configured to be electrically connectable between the first member and the second member. .

In one aspect of the present disclosure, the sheet may be folded at first, second and third folds having centers of curvature parallel to each other. The spacer portion may be constituted by a thin plate between the first fold and the second fold. The base may be formed by a thin plate on the opposite side of the first bend from the spacer. The contact portion may be composed of a thin plate between the second bending portion and the third bending portion, and may be arranged at a position facing the base with a gap therebetween. The retaining portion may be configured by a thin plate located on the opposite side of the contact portion across the third bent portion. The base may be provided with a protruding piece that protrudes from the base toward the contact portion. The protruding piece may be configured to contact the contact portion in advance at the leading end portion in the direction of protrusion, or may be configured to contact the contact portion when the contact portion is displaced toward the base portion side.

In one aspect of the present disclosure, the retaining portion may have a guide surface and a convex portion. The guide surface receives a force acting from the second member when the second member is pushed from the first position where it contacts the guide surface to the second position where it contacts the contact surface, and the guide surface moves relative to the second member. The second member may be configured to allow the second member to be displaced to the second position by rocking from the initial position to the retracted position while sliding positively. The projection prevents the second member from being displaced to the first position by being caught by the second member when the second member is at the second position or during the displacement from the second position to the first position. It may be configured to suppress. When the guide surface swings between the initial position and the retracted position, the range from the spacer portion to the retaining portion via the contact portion may swing while being elastically deformed.

In one aspect of the present disclosure, when the guide surface swings between the initial position and the retracted position, the protruding piece swings with respect to the contact portion when the range from the spacer portion to the retaining portion via the contact portion swings. It may be configured to be displaced to a position that does not hinder the displacement of the contact portion while elastically deforming while relatively sliding.

DESCRIPTION OF SYMBOLS 1... Fixing tool 11... Base part 11A... Joint surface 13... Spacer part 15... Contact part 15A... Contact surface 17... Retaining part 17A... Guide surface 19... Protruding piece 21... First bending 22... Second bending point 23... Third bending point 24... Fourth bending point 25... Fifth bending point 26... Sixth bending point 27... Seventh bending point 29... Projection 31... Hole 31... Mounting hole 51... First member 52... Second member 61... First connector 62... Second connector 171... First part 172... Second part 173... The third part.

Claims (3)

A fixture that is surface-mounted on a first member and configured to be able to fix one of the first member and the second member to the other by holding the second member,
having a base, a spacer, a contact and a retainer,
The base has a joint surface that is soldered to the first member when the fixture is surface-mounted to the first member,
The spacer portion is provided between the base portion and the contact portion and configured to secure a gap between the base portion and the contact portion,
The contact portion has a contact surface directed in a direction opposite to the joint surface, and is configured to contact the second member with the contact surface when the fixture holds the second member,
The retaining portion is configured to be able to suppress displacement of the second member in a direction away from the contact surface by being caught by the second member at a location opposite to the contact surface with the second member interposed therebetween. ,
The base portion, the spacer portion, the contact portion, and the retaining portion are integrally formed of a thin metal plate, and are configured to be electrically connectable between the first member and the second member,
The thin plate is bent at a first bending point, a second bending point and a third bending point having centers of curvature parallel to each other,
the spacer portion is configured by the thin plate between the first bending portion and the second bending portion;
The base portion is composed of the thin plate located on the opposite side of the spacer portion across the first bending portion,
The contact portion is composed of the thin plate between the second bending portion and the third bending portion, and is arranged at a position facing the base portion across the gap,
The retaining portion is composed of the thin plate located on the opposite side of the contact portion across the third bending portion,
The base is provided with a protruding piece that protrudes from the base toward the contact portion,
The protruding piece is configured to contact the contact portion in advance at the leading end in the projecting direction, or is configured to contact the contact portion when the contact portion is displaced toward the base portion.
Fixture. A fixture according to claim 1 , wherein
The retaining portion has a guide surface and a convex portion,
The guide surface receives a force acting from the second member when the second member is pushed from a first position where the guide surface is in contact with the guide surface to a second position where the contact surface is contacted. configured to allow the second member to be displaced to the second position by swinging from the initial position to the retracted position while sliding relative to the two members;
When the second member is at the second position or is in the middle of being displaced from the second position to the first position, the convex portion is caught by the second member, thereby causing the second member to move from the second position to the first position. configured to suppress displacement to the first position;
When the guide surface swings between the initial position and the retracted position, the range from the spacer portion to the retaining portion via the contact portion is configured to swing while being elastically deformed. Fixed fixture. A fixture according to claim 2 , wherein
When the guide surface swings between the initial position and the retracted position, the protruding piece swings against the contact portion when the range from the spacer portion to the retaining portion via the contact portion swings. a fixture configured to displace to a position that does not hinder the displacement of the contact portion while elastically deforming while sliding relative to the contact portion.

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