JP7427221B2 - Spacer holding jig - Google Patents

Description

The present disclosure relates to a spacer holding jig.

A spacer for mounting a printed circuit board in which a bush portion is provided at one end of a main body portion configured in a cylindrical shape has been proposed (see, for example, Patent Document 1).

Utility Model Publication No. 57-157195

For example, during maintenance work, when trying to remove a screw passed through a spacer by turning it with a screwdriver, if the head of the screw is wedged into the bushing, the screw and spacer may rotate together. . In this case, for example, if a screw is screwed into a screw hole of the chassis, when the screw loosens and moves in the axial direction, the spacer also follows the screw and moves in the axial direction. As a result, the printed circuit board is pressed by the spacer moving away from the chassis, so there is a risk that an unnecessary load will be applied to the printed circuit board.

In one aspect of the present disclosure, it is desirable to provide a spacer holding jig that can suppress the spacer from moving following the screw when removing the screw passed through the spacer.

A spacer holding jig according to one aspect of the present disclosure is a spacer used to suppress displacement of a spacer when a screw is removed using a driver from a structure having a first member, a second member, a spacer, and a screw. It is a holding jig.

The second member has a through hole. The spacer has a main body part that is sandwiched between the first member and the second member to ensure a gap between the first member and the second member, and a bush part that is inserted into the through hole, An insertion hole through which the shaft of the screw passes is provided at a position that penetrates the bushing and the main body. The shaft portion of the screw is inserted into the insertion hole from the opening on the bushing portion side, a part of the shaft portion protrudes from the opening on the main body side, and the protruding portion is screwed into the mounting hole provided in the first member. Alternatively, the spacer is fixed to the first member by being screwed into a nut placed on the opposite side of the spacer across the attachment hole. The second member is fixed to the spacer by inserting the bushing portion into the through hole.

The spacer holding jig includes a pressure section, a spring section, and a movable section. The pressurizing part has an inner cavity, and when the main body of the driver is passed through the inner cavity and the tip of the driver comes into contact with the head of the screw, one end of the pressurizing part has a bush around the head of the screw. It is configured so as to come into contact with the part. When the spring portion is elastically deformed, the spring portion is configured to urge the pressure portion toward the bush portion side with the elastic force generated due to the elastic deformation. The movable part is configured to be displaced relative to the pressurizing part and elastically deform the spring part when an external force is applied.

According to the spacer pressing jig configured in this manner, when an external force is applied to the movable part to elastically deform the spring part, the pressure part is urged toward the bush part by the spring part. The main body of the driver is passed through the lumen of the pressurizing part, so that the tip of the driver can be brought into contact with the head of the screw. In this state, one end of the pressurizing part contacts the bushing part around the head of the screw and presses the bushing part. Therefore, if you use a screwdriver to turn the screw in this state, you can prevent the bushing from moving in the direction of following the screw. Therefore, even if the screw moves in the direction away from the first member, it is possible to suppress the spacer from moving in the direction away from the first member, and it is possible to suppress unnecessary loads from being applied to the second member.

Note that the spacer pressing jig of the present disclosure may have the following configuration.
(A) The movable part may be configured to receive external force from the grip part of the driver that contacts one end of the movable part when the tip of the screwdriver comes into contact with the head of the screw.

(B) The movable part may be configured to receive an external force applied to the movable part by an operator holding the movable part while the tip of the screwdriver is in contact with the head of the screw.
(C) Both the pressurizing part and the movable part are configured in a cylindrical shape, and are relatively displaced within a range that maintains a state in which a part of one is inserted into the inner circumferential side of the other. It may be configured as follows.

FIG. 1A is a front view of the spacer pressing jig of the first embodiment. FIG. 1B is a cross-sectional view of the portion indicated by line IB-IB in FIG. 1A. FIG. 2A is a front view of a structure having a first member, a second member, a spacer, and a screw. FIG. 2B is a cross-sectional view of the portion indicated by line IIC-IIC in FIG. 2A. FIG. 3A is a first explanatory diagram for explaining how to use the spacer pressing jig of the first embodiment. FIG. 3B is a second explanatory diagram for explaining how to use the spacer pressing jig of the first embodiment. FIG. 3C is a third explanatory diagram for explaining how to use the spacer pressing jig of the first embodiment. FIG. 4A is a front view of a spacer pressing jig according to the second embodiment. FIG. 4B is a cross-sectional view of the portion indicated by line IVB-IVB in FIG. 4A. FIG. 5A is a first explanatory diagram for explaining how to use the spacer pressing jig of the second embodiment. FIG. 5B is a second explanatory diagram for explaining how to use the spacer pressing jig of the second embodiment. FIG. 5C is a third explanatory diagram for explaining how to use the spacer pressing jig of the second embodiment.

Next, the above-described spacer pressing jig will be described by citing exemplary embodiments.
[First embodiment]
The spacer holding jig 1 shown in FIGS. 1A and 1B includes a first member 51 (in this embodiment, a sheet metal is illustrated as an example) and a second member 52 (in this embodiment, as shown in FIGS. 2A and 2B). (An electronic circuit board is taken as an example.) This is a jig used when removing the screw 54 from a structure having the spacer 53 and the screw 54.

The spacer 53 has a main body portion 531 and a bush portion 532. The main body portion 531 and the bush portion 532 are integrally molded from a resin material. The main body portion 531 is a portion that is sandwiched between the first member 51 and the second member 52 to ensure a gap between the first member 51 and the second member 52. The bush portion 532 is a portion inserted into a through hole provided in the second member 52. A plurality of retaining convex portions 533 are provided on the outer periphery of the bush portion 532. The retaining convex portion 533 prevents the bush portion 532 from coming out of the through hole of the second member 52 by being caught on the second member 52 .

An insertion hole through which the shaft portion of the screw 54 is inserted is provided at a position that penetrates the bush portion 532 and the main body portion 531. The shaft portion of the screw 54 is inserted into the insertion hole from the opening on the bushing portion 532 side, and a portion of the shaft portion protrudes from the opening on the main body portion 531 side, and the protruding portion is attached to the first member 51. It is screwed into the hole. Note that the shaft portion of the screw 54 may be configured to be screwed into a nut placed on the opposite side of the spacer 53 across the attachment hole.

The spacer pressing jig 1 has a pressure section 11, a spring section 13, and a movable section 15, as shown in FIGS. 1A and 1B. In the case of this embodiment, the movable part 15 is composed of two parts 151 and 152. Both the pressurizing part 11 and the movable part 15 have a cylindrical shape. The upper part of the pressurizing part 11 is inserted into the lower inner peripheral side of the movable part 15, and while maintaining this state, the pressurizing part 11 and the movable part 15 are inserted in the axial direction (direction along the center line A1 shown in FIG. 1B). ) is configured to be relatively displaceable. When the movable part 15 is displaced downward in the drawing relative to the pressure part 11, the spring part 13 is compressed between the pressure part 11 and the movable part 15 and is elastically deformed.

Next, a method of using the spacer holding jig 1 will be explained. When using the spacer holding jig 1, as shown in FIG. 3A, the spacer holding jig 1 is placed in a position such that the lower end of the pressurizing part 11 comes into contact with the bushing part 532 around the head of the screw 54. Placed. Further, the main body 611 of the driver 61 is passed through the inner cavity of the pressurizing section 11 . In the state shown in FIG. 3A, the lower end of the movable part 15 is at position L1, and in this state, the tip 612 of the driver 61 is above position S1, where the upper end of the screw 54 is located.

When a worker operating the driver 61 holds the grip 613 of the driver 61 and pushes the driver 61 toward the screw 54, the grip 613 of the driver 61 presses the upper end of the movable part 15, causing the movable part 15 to move downward. and is displaced. The movable portion 15 is displaced until the tip end 612 of the driver 61 comes into contact with the head of the screw 54, resulting in the state shown in FIG. 3B. When looking at the amount of displacement of the movable part 15 from the lower end of the movable part 15, the lower end of the movable part 15 is displaced from position L1 to position L2.

When the movable part 15 is displaced to the position shown in FIG. 3B, the spring part 13 is compressed between the pressure part 11 and the movable part 15 and is elastically deformed. An elastic force is generated in the spring portion 13 and presses the pressure portion 11 downward. As a result, the lower end of the pressing part 11 is in a state of pressing the spacer 53 (more specifically, the bushing part 532) around the head of the screw 54.

In this state, when the operator turns the screwdriver 61 to loosen the screw 54, the screw 54 moves in the direction of being removed from the first member 51 (upward in the figure), and is displaced to the position shown in FIG. 3C, for example. do. When looking at the amount of displacement of the screw 54 from the upper end of the screw 54, the upper end of the screw 54 rises from position S1 to position S2. At this time, the driver 61 rises together with the screw 54, and the grip portion 613 of the driver 61 also rises. When the grip part 613 of the driver 61 rises, the movable part 15, which is biased upward by the spring part 13, also rises. When looking at the amount of displacement of the movable part 15 from the upper end of the movable part 15, the upper end of the movable part 15 is displaced from position U1 to position U2.

During the period until the upper end of the movable part 15 is displaced from the position U1 to the position U2, the spring part 13 is in a compressed state, and the state in which the lower end of the pressurizing part 11 presses the upper end of the spacer 53 is maintained. Therefore, even if the screw 54 is displaced upward, the spacer 53 can be prevented from rising following the screw 54. Therefore, even if the screw 54 moves in the direction away from the first member 51, the spacer 53 can be prevented from moving in the direction away from the first member 51, and unnecessary load on the second member 52 can be suppressed. be able to.

[Second embodiment]
Next, a second embodiment will be described. Note that the second embodiment will be described in detail focusing on the differences from the first embodiment. Components that are functionally corresponding between the first embodiment and the second embodiment are designated by common reference numerals, and detailed explanation thereof will be omitted.

The spacer pressing jig 2 shown in FIGS. 4A and 4B includes a pressure section 11, a spring section 13, and a movable section 15, as shown in FIGS. 4A and 4B. In the case of this embodiment, the pressurizing section 11 is composed of three parts 111, 112, and 113. The portion between the upper and lower ends of the pressurizing portion 11 is inserted into the inner peripheral side of the movable portion 15, and while maintaining this state, the pressurizing portion 11 and the movable portion 15 are inserted in the axial direction (center line A2 shown in FIG. 4B). ) is configured to be relatively movable in the direction along When the movable part 15 is displaced downward in the drawing relative to the pressure part 11, the spring part 13 is compressed between the pressure part 11 and the movable part 15 and is elastically deformed.

Next, a method of using the spacer holding jig 2 will be explained. When using the spacer holding jig 2, as shown in FIG. 5A, the spacer holding jig 2 is placed in a position such that the lower end of the pressurizing part 11 comes into contact with the bushing part 532 around the head of the screw 54. Placed. Further, the main body 611 of the driver 61 is passed through the inner cavity of the pressurizing section 11 . In the state shown in FIG. 5A, the lower end of the movable part 15 is at position L3, and in this state, the tip 612 of the driver 61 is above position S3, where the upper end of the screw 54 is located.

In the case of the second embodiment, the operator holds the movable part 15 and presses the movable part 15 toward the screw 54. Thereby, the movable part 15 is displaced to the position shown in FIG. 5B, for example. When looking at the amount of displacement of the movable part 15 from the lower end of the movable part 15, the lower end of the movable part 15 is displaced from position L3 to position L4.

When the movable part 15 is displaced to the position shown in FIG. 5B, the spring part 13 is compressed between the pressure part 11 and the movable part 15 and is elastically deformed. An elastic force is generated in the spring portion 13 and presses the pressure portion 11 downward. As a result, the lower end of the pressing part 11 is in a state of pressing the spacer 53 (more specifically, the bushing part 532) around the head of the screw 54.

In this state, when the operator turns the screwdriver 61 to loosen the screw 54, the screw 54 moves in the direction of being removed from the first member 51 (upward in the figure), and is displaced to the position shown in FIG. 5C, for example. do. When looking at the amount of displacement of the screw 54 from the upper end of the screw 54, the upper end of the screw 54 rises from position S3 to position S4. At this time, the driver 61 rises together with the screw 54, and the grip portion 613 of the driver 61 also rises. However, in the case of the second embodiment, since the operator displaces the movable part 15 downward, unlike the first embodiment, even if the grip part 613 of the screwdriver 61 rises, the movable part 15 does not move. There will be no displacement.

While the operator is displacing the movable part 15 downward, the spring part 13 is in a compressed state, and the state in which the lower end of the pressing part 11 presses the upper end of the spacer 53 is maintained. Therefore, even if the screw 54 is displaced upward, the spacer 53 can be prevented from rising following the screw 54. Therefore, even if the screw 54 moves in the direction away from the first member 51, the spacer 53 can be prevented from moving in the direction away from the first member 51, and unnecessary load on the second member 52 can be suppressed. be able to.

[Other embodiments]
Although the spacer pressing jig has been described above using exemplary embodiments, the above-described embodiments are merely exemplified as one aspect of the present disclosure. That is, the present disclosure is not limited to the exemplary embodiments described above, and can be implemented in various forms without departing from the technical idea of the present disclosure.

For example, in the embodiment described above, a sheet metal is illustrated as an example of the first member, and an electronic circuit board is illustrated as an example of the second member, but the first member may be an electronic circuit board and the second member may be a sheet metal. good. Furthermore, both the first member and the second member may be electronic circuit boards, or both the first member and the second member may be sheet metal. Alternatively, both or one of the first member and the second member may be a member other than a sheet metal and an electronic circuit board.

Note that a plurality of functions realized by one component illustrated in the above embodiment may be realized by a plurality of components. One function realized by one component illustrated in the above embodiment may be realized by a plurality of components. The plurality of functions realized by the plurality of components illustrated in the above embodiments may be realized by one component. One function realized by the plurality of components illustrated in the above embodiment may be realized by one component. A part of the configuration illustrated in the above embodiment may be omitted. At least a part of the configurations exemplified in one of the embodiments described above may be added to or replaced with the configurations exemplified in any of the above embodiments other than the one embodiment.

DESCRIPTION OF SYMBOLS 1, 2... Spacer holding jig, 11... Pressure part, 13... Spring part, 15... Movable part, 51... First member, 52... Second member, 53... Spacer, 531... Main body part, 532... Bush part , 533... Removal prevention convex part, 54... Screw, 61... Driver, 611... Main body, 612... Tip part, 613... Grip part.

Claims (4)

A spacer holding jig used to suppress displacement of the spacer when removing the screw from a structure having a first member, a second member, a spacer, and a screw using a driver,
The second member has a through hole, and the spacer is a main body portion that is sandwiched between the first member and the second member to ensure a gap between the first member and the second member. and a bush portion inserted into the through hole, and an insertion hole through which the shaft portion of the screw is passed is provided at a position penetrating the bush portion and the main body portion, and the shaft portion of the screw is inserted into the through hole. The part is inserted into the insertion hole from the opening on the side of the bush part, a part of the shaft part protrudes from the opening on the side of the main body part, and the protruding part is screwed into the mounting hole provided in the first member. The spacer is fixed to the first member by fitting or screwing with a nut placed on the opposite side of the spacer across the mounting hole, and the bush portion is inserted into the through hole. When inserted, the main body portion contacts the second member at the periphery of the opening at one end of the openings at both ends of the through-hole in the penetration direction, and the bushing portion contacts the second member at the periphery of the opening at the other end. The second member is fixed to the spacer by a retaining protrusion provided on the outer periphery of the spacer being caught on the second member;
The spacer holding jig has a pressure part, a spring part, and a movable part,
The pressurizing part has an inner cavity, and when the main body of the driver is passed through the inner cavity so that the tip of the driver comes into contact with the head of the screw, one end of the pressurizing part has an inner cavity. configured to abut against the bushing portion around the head and suppress rotation and movement of the bushing portion in a direction that follows the screw ;
The spring portion is configured to, when elastically deformed, urge the pressure portion toward the bush portion side with an elastic force generated due to the elastic deformation,
The movable part is configured to move relative to the pressurizing part when an external force is applied to the movable part to move the movable part closer to the spacer along the axial direction of the main body of the driver. configured to be displaced to elastically deform the spring portion;
Spacer holding jig. The spacer holding jig according to claim 1,
The movable part is configured to receive the external force from a grip part of the driver that contacts one end of the movable part when the tip of the screwdriver comes into contact with the head of the screw. ,
Spacer holding jig. The spacer holding jig according to claim 1,
The movable part is configured to receive the external force applied to the movable part by a worker holding the movable part while the tip of the screwdriver is in contact with the head of the screw.
Spacer holding jig. The spacer holding jig according to any one of claims 1 to 3,
The pressurizing part and the movable part are both configured in a cylindrical shape, and are configured to be relatively displaced within a range that allows a part of one to be maintained inserted into the inner circumferential side of the other. is composed of
Spacer holding jig.

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