JP2015228427A - Fixture for circuit board - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fixture for circuit board capable of easily fixing a plurality of circuit boards while stacking, and performing electrically robust ground connection.SOLUTION: In a state where a first holding part 12 of a first strut member 1A, and a second holding part 13 of a second strut member 1B are arranged while holding a circuit board 3 provided with a through hole 31, the first holding part 12 and second holding part 13 come into face contact, through holes 12a, 12b for screw of the first holding part 12, a notch 13a of the second holding part 13, and the through hole 31 of the circuit board 3 overlap in the plan view, the through holes 12a, 12b for screw provided in the first holding part 12, the notch 13a of the second holding part 13, and a screw 4 inserted into the through hole 31 of the circuit board 3 are screwed by the female screw of a screw fixing member 2, thus holding the circuit board 3 between the first and second strut members 1A, 1B.

Description

  The present invention relates to a circuit board mounting tool, for example, a circuit board mounting tool that holds a plurality of circuit boards in a stacked manner and performs ground connection of the circuit boards.

  In general, in an electrical device having a circuit board, a circuit board mounting tool that holds the circuit board and electrically connects the circuit board and the conductive metal portion to perform ground connection is used. As a circuit board mounting tool, one fixed to a ground connection land of a circuit board by solder is known. In addition, there is one that can be connected to the ground by stacking circuit board attachments and fixing them with screws.

  For example, in Patent Document 1, the circuit board fixture is fixed to the ground connection land portion of the circuit board by soldering. The fixed circuit board fixture is screwed to the conductive metal part (main chassis). Thus, the circuit board can be electrically connected to the conductive metal portion.

Japanese Patent Laid-Open No. 2002-217469

  However, since the circuit board fixture described in Patent Document 1 is fixed to the circuit board by solder, it is difficult to stack and fix a plurality of circuit boards. In addition, once the soldering is performed, the circuit board fixture cannot be easily removed from the circuit board, so that the storage and carrying of the circuit board is inconvenient by the height of the circuit board mounting part. there were.

  The present invention has been made to solve the above-described problems, and can easily stack and fix a plurality of circuit boards, and can perform an electrically strong ground connection. The object is to provide a circuit board fixture.

  The circuit board fixture according to the present invention includes a first holding part provided with at least one screw through hole, a second holding part provided with a notch, and the first and second holding parts. A mounting member for a circuit board including a conductive support member including a first support member for the first support member and a second support member for the second support member. The first holding part and the second holding part are in contact with each other in a state where the circuit board provided with the through hole is interposed therebetween, and the screw through hole provided in the first holding part, the second The notch provided in the holding portion and the through hole provided in the circuit board overlap in plan view, and are provided in the screw holding hole provided in the first holding portion 12 and the second holding portion. Screw the screw inserted into the notch and the through hole provided in the circuit board into the female screw formed on the screw fixing member. By Mesuru, a first strut member, and a second strut member, and the screw fixing member, using a can hold the circuit board between the first, second strut member.

  In the circuit board fixture according to the present invention, the circuit board is sandwiched between the first holding part of the first support member and the second holding part of the second support member, and the first holding part is provided. The part and the second holding part are in contact with each other on the surface. As a result, the circuit board and the first and second support members can be firmly and electrically connected. Therefore, it is possible to reliably connect the circuit board to the ground.

  Since the first and second support members have the same structure, a plurality of circuit boards can be stacked and held by repeatedly combining the first and second support members in the vertical direction.

  The first and second support members and the circuit board are fixed by screws and screw fixing members each having a female screw portion. Therefore, since it is not necessary to provide male and female screws on the first and second support members, it is possible to reduce the manufacturing cost of the first and second support members.

  Moreover, in the circuit board fixture according to the present invention, the first and second support members and the circuit board are joined by screwing, and therefore can be easily assembled.

It is a perspective view of the middle stage part of the fixture for circuit boards concerning the embodiment of the present invention. It is a disassembled perspective view of the middle stage part of the fixture for circuit boards which concerns on embodiment of this invention. It is sectional drawing of the middle step part of the fixture for circuit boards which concerns on embodiment of this invention. It is a perspective view of the support | pillar member which concerns on embodiment of this invention. It is a perspective view of the support | pillar member which concerns on embodiment of this invention. It is a perspective view of the screw fixing member concerning the embodiment of the present invention. It is a perspective view of the screw fixing member concerning the embodiment of the present invention. It is a perspective view of the upper stage part of the fixture for circuit boards concerning the embodiment of the present invention. It is a disassembled perspective view of the upper stage part of the fixture for circuit boards which concerns on embodiment of this invention. It is sectional drawing of the upper stage part of the fixture for circuit boards which concerns on embodiment of this invention. It is a perspective view of the fixture for circuit boards which concerns on a premise technique. It is a disassembled perspective view of the fixture for circuit boards which concerns on a premise technique. It is sectional drawing of the fixture for circuit boards which concerns on a premise technique.

<Prerequisite technology>
Prior to describing the embodiments of the present invention, the technology that is the premise of the present invention will be described. 11, 12, and 13 are a perspective view, an exploded perspective view, and a cross-sectional view of a circuit board fixture according to the base technology. As shown in FIG. 11, the circuit board fixture in the base technology is a hexagonal metal support member 6. In the base technology, the circuit board 3 is fixed between the two hexagonal metal support members 6 to connect the circuit board 3 and the ground.

  The two hexagonal metal support members 6 have the same shape. Each of the two hexagonal metal strut members 6 includes a strut portion 61, a female screw portion 62, and a male screw portion 63. The column portion 61 is, for example, a hexagonal column. A female thread part 62 is provided at one end of the column part 61. Further, a male screw part 63 is provided at the other end of the column part 61.

  As shown in FIGS. 12 and 13, the male screw portion 63 of the hexagonal metal support member 6 is inserted into the through hole 31 provided in the circuit board 3. At this time, the spring washer 7 and the external tooth washer 8 are disposed between the hexagonal metal support member 6 and the circuit board 3. The male screw portion 63 that penetrates from the through hole 31 of the circuit board 3 to the lower surface of the circuit board 3 is screwed to the female screw portion 62 of the other hexagonal metal support member 6. By repeating the structure of FIG. 11, a plurality of circuit boards 3 can be stacked and fixed.

  In the base technology, there is a problem that the manufacturing cost increases because the hexagonal metal support member 6 needs to be processed to form male and female threads. Further, in order to enable a strong ground connection with the ground connection land portion 32 or the conductive metal portion 51, it is necessary to insert the spring washer 7 and the external tooth washer 8. For this reason, it takes time to assemble. In addition, if the spring washer 7 and the external tooth washer 8 are forgotten to be inserted in the assembling work, there is a problem of ground connection failure. Further, since the stacked hexagonal metal support members 6 are directly fixed with screws, there is a problem that when the upper support member is rotated and removed during maintenance, the lower support member is also rotated and loosened at the same time. It was.

<Embodiment of the present invention>
<Configuration>
The circuit board fixture according to the embodiment of the present invention can stack and fix a plurality of circuit boards by a plurality of support members. The material of the support member is conductive and has a role of grounding the circuit board. In this embodiment, it is considered that two circuit boards are stacked. That is, the conductive metal part 51 of the electric device 5 and the lower circuit board are fixed and connected by the support member. This structure portion is referred to as a middle portion. Further, the lower circuit board and the upper circuit board are fixed and connected by another support member. This structure part is called an upper part.

  1, 2, and 3 are a perspective view, an exploded perspective view, and a cross-sectional view, respectively, of a middle portion of the circuit board fixture according to the embodiment of the present invention. 4 and 5 are perspective views from different directions of the column members in the embodiment of the present invention. 6 and 7 are perspective views from different directions of the screw fixing member 2 in the embodiment of the present invention. 8, 9, and 10 are a perspective view and an exploded perspective view, respectively, of the upper portion of the circuit board fixture according to the embodiment of the present invention.

  As shown in FIGS. 1 to 3, the circuit board fixture according to the present embodiment uses two support members (that is, the first and second support members 1 </ b> A and 1 </ b> B) and the screw fixing member 2. Two circuit boards 3 are overlapped and fixed with a gap therebetween, and these circuit boards 3 and ground are connected. Note that the circuit board 3 that is fixed to the upper side of the circuit board 3 in FIG. The circuit board 3 will be described later with reference to FIGS.

  First, the 1st support | pillar member 1A is demonstrated. In addition, since the 2nd support | pillar member 1B is the same structure as 1A of 1st support | pillar members, description is abbreviate | omitted. In the following description, when distinguishing two strut members, they are described as first and second strut members 1A and 1B, and when not distinguishing the two strut members, they are simply described as strut members. The material of the first support member 1A is a conductive metal. As shown in FIG. 4, the first support column member 1 </ b> A includes a plate-like support portion 11 and first and second holding portions 12 and 13. The first and second holding portions 12 and 13 are provided at both ends of the support portion 11.

  The 1st holding | maintenance part 12 is provided with the 1st part 12e extended perpendicularly | vertically with respect to the direction where the support part 11 is extended, and the 2nd part 12f which turned up the 1st part 12e. The cross section of the first holding part 12 is U-shaped. In addition, the U-shape mentioned here does not mean only when the inner corner of the first holding part 12 is a right angle, but is a wide concept including the case where the corner is rounded (U-shaped).

  As shown in FIG. 5, the first portion 12e and the second portion 12f are provided with screw through holes 12a and 12b, respectively. Here, the diameter of the screw through hole 12 a is larger than the diameter of the head of the screw 4. Further, the diameter of the screw through hole 12 b is smaller than the diameter of the head of the screw 4. Further, as shown in FIG. 5, a protrusion 12d may be provided inside the second portion.

  A positioning projection 12c is provided at the tip of the second portion 12f of the first holding portion 12. The support portion 11 is provided with a positioning hole 11a. As will be described later, in the state where the circuit board fixture is assembled (the state shown in FIG. 1), the positioning protrusion 12c of the first support member 1A is fitted into the positioning hole 11a of the second support member 1B. Match.

  The second holding portion 13 includes a third portion 13b that extends perpendicular to the direction in which the support portion 11 extends. The cross section from the second holding part 13 to the support part 11 is L-shaped. A notch 13 a is provided at the tip of the third portion 13 b of the second holding portion 13. The shape of the notch 13a is, for example, a U-shape or a U-shape (a broad U-shape as described above).

  Next, the screw fixing member 2 will be described. The material of the screw fixing member 2 is a conductive metal. As shown in FIGS. 6 and 7, the screw fixing member 2 includes a female screw portion 22 and a top surface portion 21. An internal thread is formed inside the internal thread portion 22. The top surface portion 21 includes a hole 21a connected to the female screw and a first protrusion 21b on the side surface. The top surface portion 21 further includes a second protrusion 21c on the side surface opposite to the first protrusion 21b.

  As will be described later, in the state where the circuit board fixture is assembled (the state shown in FIG. 1), the first protrusion 21b of the first column member 1A is fitted into the positioning hole 11a of the second column member 1B. Match. The positioning projections 12c of the first column member 1A are also fitted into the positioning holes 11a of the second column member 1B. That is, the sum of the height of the first protrusion 21b and the height of the positioning protrusion 12c is equal to the height of the positioning hole 11a.

  Further, as will be described later, in a state where the circuit board fixture is assembled (the state shown in FIG. 8), the second protrusion 21c provided on the top surface portion 21 is formed in the positioning hole 11a of the second column member 1B. Mating. That is, the height of the second protrusion 21c is equal to the height of the positioning hole 11a.

<Assembly method>
Next, a method for assembling the circuit board fixture in the present embodiment will be described. First, the assembly of the middle part will be described. As shown in FIGS. 2 and 3, the screw 4 is inserted into the screw through holes 12 a and 12 b of the first holding portion 12 of the second support member 1 </ b> B, and the second support member 1 </ b> B is connected to the electric device 5. The conductive metal part 51 is fixed. At this time, since the diameter of the screw through hole 12a is larger than the diameter of the head of the screw 4, the conductive metal portion 51 can be directly fixed by the screw 4 and a strong ground connection is possible. In addition, since the adhesiveness of the 2nd part 12f of the 1st holding | maintenance part 12 and the electroconductive metal part 51 increases by letting the screw 4 pass beforehand through the spring washer 42 and the external tooth washer 43, a stronger ground connection Is possible.

  Next, as shown in FIG. 2, the circuit board 3 is placed on the second holding portion 13 of the second column member 1 </ b> B. A through hole 31 is provided in the ground connection land portion 32 of the circuit board 3. And the 2nd holding | maintenance part 13 of the 2nd support | pillar member 1B and the circuit board 3 are made to fit in the 1st holding | maintenance part 12 of the 1st support | pillar member 1A. More specifically, the first holding portion 12 is fitted so that the circuit board 3 comes to the first portion 12e side. Further, the first holding portion 12 is fitted so that the second holding portion 13 of the second support column member 1B comes to the second portion 12f side of the first holding portion 12. At this time, the positioning protrusion 12c of the first support member 1A is fitted into the positioning hole 11a of the second support member 1B. In this state, the screw through hole 12a provided in the first holding part 12 of the first support member 1A, the through hole 31 provided in the circuit board 3, and the second support part of the second support member 1B. The notch 13a provided in 13 and the screw through hole 12b provided in the first holding portion 12 of the first support column member 1A overlap in this order in plan view.

  Next, the first protrusion 21b provided on the top surface portion 21 of the screw fixing member 2 is fitted into the remaining gap of the positioning hole 11a of the second column member 1B. That is, the positioning protrusion 11c of the first support member 1A and the first protrusion 21b provided on the top surface portion 21 of the screw fixing member 2 are fitted in the positioning hole 11a of the second support member 1B. doing. In this state, the screw through hole 12b and the hole 21a in which the female screw of the screw fixing member 2 is formed overlap with each other in plan view.

  Then, the screw 4 is inserted toward the screw fixing member 2 from the screw through hole 12a of the first holding portion 12 of the first support member 1A, and is screwed to the female screw of the screw fixing member 2. That is, the male screw portion 41 of the screw 4 is replaced with a screw through hole 12a provided in the first support member 1A, a through hole 31 provided in the circuit board 3, and a notch 13a provided in the second support member 1B. And it inserts in order of the screw through-hole 12b provided in 1 A of 1st support | pillar members, and is screwed to the internal thread part 22 of the screw fixing | fixed part 2. As shown in FIG. When the screw 4 is screwed to the screw fixing member 2, the screw fixing member 2 does not move because the screw fixing member 2 is fixed to the second column member 1B.

  In addition, since the notch 13a is provided in the 2nd holding | maintenance part 13 of the 1st support | pillar member 1A, when performing screwing, a screwdriver is directly passed through the notch 13a to the head of the screw 4 It is possible to apply a tool such as. That is, when screwing, since the tool used for screwing does not interfere with the first support member 1A, assembly work is facilitated.

  As described above, the circuit board 3 is fixed between the first and second support members 1A and 1B (FIG. 1). In the state of FIG. 1, the circuit board 3 is electrically connected to the conductive metal portion 51 of the electric device 5 via the second support member 1 </ b> B. In addition, by providing the notch part 33 in the circuit board 3, the overhang | projection from the circuit board 3 of the 1st, 2nd support | pillar members 1A and 1B can be eliminated, and the electric equipment 5 can be reduced in size.

  Next, assembly of the upper part will be described. As shown in FIGS. 8 and 9, the circuit board 3 is placed on the second holding portion 13 of the first support member 1A. Further, the second protrusion 21c provided on the top surface portion 21 of the screw fixing member 2 is fitted into the positioning hole 11a of the support member 1A. In this state, the through hole 31 of the circuit board 3, the notch 13 a of the second holding portion 13 of the first support member 1 </ b> A, and the hole 21 a in which the female screw of the screw fixing member 2 is formed overlap in plan view. ing.

  Then, the screw 4 is inserted from the through hole 31 of the circuit board 3 toward the screw fixing member 2 and is screwed to the screw fixing member 2. That is, the male screw portion 41 of the screw 4 is inserted in the order of the through hole 31 provided in the circuit board 3 and the notch 13a provided in the first support member 1A, and the screw is inserted into the female screw portion 22 of the screw fixing portion 2. Stop. When the screw 4 is screwed to the screw fixing member 2, the screw fixing member 2 does not move because the screw fixing member 2 is fixed to the first support member 1 </ b> A.

  As described above, the circuit board 3 is fixed to the upper surface of the first support member 1A (FIG. 8). In the state of FIG. 8, the circuit board 3 is electrically connected to the conductive metal portion 51 of the electric device 5 through the first and second support members 1 </ b> A and 1 </ b> B. In FIGS. 8 and 9, the description of the second column member 1B and the middle circuit board 3 is omitted.

  In the present embodiment, the case where two circuit boards 3 are fixed while being overlapped with each other has been described. However, by repeating the configuration of the middle portion (FIG. 1), an arbitrary number of circuit boards 3 can be mounted. It is possible to fix it by overlapping.

  Note that it is also possible to fix only one circuit board 3 using the support members (that is, the first or second support members 1A and 1B) in the present invention. FIG. 10 is a cross-sectional view of the circuit board mounting tool when only one circuit board 3 is fixed. As shown in FIG. 10, the conductive metal part 51 of the electric device 5 is fixed to the first holding part 12 of the column member, and the circuit board 3 is fixed to the second holding part 13. Since the fixing of the first holding unit 12 and the conductive metal unit 51 of the electric device 5 is the same as that in FIG. 3, the description thereof is omitted. Further, the fixing of the second holding unit 13 and the circuit board 3 is the same as in FIG.

<Effect>
The circuit board fixture in the present embodiment includes a first holding part 12 provided with at least one screw through-holes 12a and 12b, a second holding part 13 provided with a notch 13a, A mounting member for a circuit board including a conductive support member (that is, the first and second support members 1A and 1B) including a support part 11 that connects the second holding parts 12 and 13. In a state in which the first holding part 12 of one supporting member 1A and the second holding part 13 of the second supporting member 1B are arranged with the circuit board 3 provided with the through hole 31 interposed therebetween, The holding portion 12 and the second holding portion 13 are in contact with each other, and screw through holes 12a and 12b provided in the first holding portion 12, a notch 13a provided in the second holding portion 13, and The first holding portion overlaps with the through hole 31 provided in the circuit board 3 in plan view. The screw through-holes 12a and 12b provided in 2, the notch 13a provided in the second holding portion 13, and the screw 4 inserted into the through-hole 31 provided in the circuit board 3 are connected to the screw fixing member 2. The first support member 1A, the second support member 1B, and the screw fixing member 2 are used to fix the first and second support members 1A and 1B. The circuit board 3 can be held therebetween.

  Therefore, in the circuit board fixture according to the embodiment of the present invention, the circuit board 3 is provided between the first holding part 12 of the first support member 1A and the second holding part 13 of the second support member 1B. And the first holding part 12 and the second holding part 13 are in contact with each other on the surface. As a result, the circuit board 3 and the first and second support members 1A and 1B can be firmly and electrically connected. Therefore, it is possible to reliably connect the circuit board 3 to the ground.

  In addition, since the first and second support members 1A and 1B have the same structure, the first and second support members 1A and 1B are repeatedly combined in the vertical direction to hold the plurality of circuit boards 3 in an overlapping manner. It becomes possible to do.

  The first and second support members 1 </ b> A and 1 </ b> B and the circuit board 3 are fixed by a screw fixing member 2 having a screw 4 and a female screw portion 22. Therefore, since it is not necessary to provide male and female screws on the first and second support members 1A and 1B, it is possible to reduce the manufacturing cost of the first and second support members 1A and 1B.

  Moreover, in the circuit board fixture according to the embodiment of the present invention, the first and second support members 1A and 1B and the circuit board 3 are joined by screwing, and therefore can be easily assembled.

  In the circuit board fixture according to the present embodiment, the first holding portion 12 of the column member (that is, the first and second column members 1A and 1B) is perpendicular to the direction in which the support unit 11 extends. The first through-holes 12a and 12b provided in the first holding portion 12 have a U-shaped cross section including a first portion 12e extending and a second portion 12f obtained by folding back the first portion 12e. The second holding portion 13 of the column member is provided with a third portion 13b extending perpendicularly to the direction in which the support portion 11 extends, and is provided with a second holding portion. The notch 13a provided in the portion 13 is provided at the tip of the third portion 13b, and the second holding portion 13 and the circuit of the second supporting column member 1B are connected to the first holding unit 12 of the first supporting column member 1A. The substrate 3 is fitted.

  Therefore, in the circuit board fixture according to the present embodiment, the first holding part 12 having the U-shaped cross section of the first supporting member 1A, the second holding part 13 having the L-shaped cross section of the second supporting member 1B, and Since the circuit board 3 is fitted and assembled by screwing, it can be assembled easily.

  Moreover, in the state which assembled the circuit board fixture in this embodiment, the 1st, 2nd support | pillar members 1A and 1B are contacting in the surface. That is, the second portion 12f of the first holding portion 12 of the first support member 1A and the third portion 13b of the second holding portion 13 of the second support member 1B are in contact with each other. Therefore, it is possible to make a strong electrical connection between the first support member 1A and the second support member 1B.

  In the circuit board fixture according to the present embodiment, a positioning projection 12c is provided at the tip of the second portion 12f of the first holding portion 12 of the support member, and the support portion 11 of the support member is positioned. Holes 11a are provided, and the positioning protrusions 12c of the first holding portion 12 of the first support column member 1A are fitted into the positioning holes 11a of the support portion 11 of the second support member 1B. In this state, the screw through holes 12a and 12b provided in the first holding part 12 and the notch 13a provided in the second holding part 13 overlap in a plan view.

  When assembling the circuit board fixture in the present embodiment, the screw through holes 12a and 12b provided in the first holding part 12 and the second holding part 13 are provided in order to allow the screws 4 to pass therethrough. It is necessary to adjust the position so that the notch 13a overlaps in plan view. In the present embodiment, by fitting the positioning protrusion 12c of the first holding portion 12 of the first support member 1A into the positioning hole 11a of the support portion 11 of the second support member 1B, Since the screw through holes 12a and 12b and the notch 13a overlap in plan view, it is not necessary to adjust these positions. Therefore, assembly can be performed more easily.

  Further, in the circuit board mounting tool according to the present embodiment, the diameter of the screw through hole 12a provided in the first portion 12e of the first holding portion 12 of the column member is the diameter of the screw 4 inserted into the screw through hole 12a. The diameter of the screw through hole 12b provided in the second portion 12f of the first holding part 12 is larger than the diameter of the head, and is smaller than the diameter of the head of the screw 4 inserted into the screw through hole 12b.

  Therefore, by making the diameter of the screw through hole 12a provided in the first portion 12e of the first holding portion 12 of the column member larger than the diameter of the head of the screw 4 inserted into the screw through hole 12a, A member (for example, the circuit board 3) fitted to the first holding portion 12 can be screwed directly to the third portion 12f side. Therefore, the first and second support members 1A and 1B can be more firmly screwed and joined, and the circuit board 3 can be connected more firmly between the first and second support members 1A and 1B. It becomes possible to hold.

  In the circuit board fixture according to the present embodiment, in the state where the second holding part 13 of the second support member 1B and the circuit board 3 are fitted to the first holding part 12 of the first support member 1A. At least one protrusion 12d is provided on the surface of the second portion 12f of the first holding portion 12 that contacts the third portion 13b of the second holding portion 13.

  Therefore, by providing the protrusion 12d on the surface where the first and second holding portions 12 and 13 are in contact with each other when the first supporting member 1A and the second supporting member 1B are combined, The two holding portions 13 can be easily fitted, and the assembly is further facilitated. In addition, by providing the protrusion 12d on the surface where the first and second holding portions 12 and 13 are in contact with each other, high electrical accuracy between the first column member 1A and the second column member 1B is required without requiring high component accuracy. Connection is possible. In addition, when the first support member 1 </ b> A and the second support member 1 </ b> B are combined, the first and second holding parts 12 and 13 are not in contact with the first holding part 12 but the second holding part. The same effect can be obtained even if the protrusions 12d are provided on 13.

  In the circuit board fixture according to the present embodiment, the screw fixing member 2 includes a top surface portion 21 provided at one end of the female screw, and the top surface portion 21 has a hole 21a connected to the female screw and a first surface on one side surface. The projection 21b and the second projection 21c on the other side surface are provided, and the height of the positioning hole 11a provided in the support portion 11 of the support member is equal to the height of the first projection 21b of the top surface portion 21. This is the sum of the heights of the positioning protrusions 12c of the first holding part 12, and the positioning protrusions 12c provided on the first holding part 12 of the first column member 1A and the top surface part of the screw fixing member 2 The first protrusion 21b provided on the screw 21 is fitted into the positioning hole 11a of the support 11 of the second column member 1B, and the screw through hole 12a provided in the first holding part 12 is used. , 12b and the second holding member of the second strut member 1B. The notch 13a provided in the portion 13 and the female screw hole 21a of the screw fixing member 2 overlap in plan view, and the height of the second protrusion 21c is a positioning hole provided in the support portion 11 of the column member The second protrusion 21c provided on the top surface portion 21 of the screw fixing member 2 is equal to the height of 11a and is fitted into the positioning hole 11a provided on the support portion 11 of the support member, and the second support member 11 The notch 13a provided in the holding part 13 and the female screw hole 21a of the screw fixing member 2 overlap each other in plan view.

  Accordingly, when the middle portion (that is, the joint portion between the first and second support members 1A and 1B and the circuit board 3) is screwed by the screw fixing member 2, the first protrusion 21b provided on the top surface portion 21 is used. Is fitted into the alignment hole 11 a of the support portion 11 together with the alignment protrusion 12 c provided on the first holding portion 12. As a result, the screw through holes 12a and 12b, the notch 13a, and the female screw hole 21a overlap each other in a plan view, so that it is not necessary to adjust the position of each member when the screw 4 is screwed to the female screw. Therefore, it is possible to further facilitate the assembly of the circuit board fixture.

  Further, when the upper portion (that is, the joint portion between the second support portion 13 of the column member and the circuit board 3) is screwed, the second protrusion 21c provided on the top surface portion 21 is aligned with the support portion 11. It is made to fit in the hole 11a for use. As a result, the notch 13a and the female screw hole 21a overlap each other in a plan view, and therefore, when the screw 4 is screwed to the female screw, the position adjustment of the screw fixing member 2 with respect to the support member becomes unnecessary. Therefore, it is possible to further facilitate the assembly of the circuit board fixture.

  Further, first and second protrusions 21b and 21c having different heights are provided on different side surfaces of the top surface portion 21 of the screw fixing member 2. Therefore, it is possible to use the screw fixing member 2 for joining both the middle portion and the upper portion.

  In the present invention, the embodiments can be appropriately modified and omitted within the scope of the invention.

  DESCRIPTION OF SYMBOLS 1A 1st support | pillar member, 1B 2nd support | pillar member, 2 Screw fixing member, 3 Circuit board, 4 Screw, 5 Electrical equipment, 6 Hexagonal metal support | pillar member, 7,42 Spring washer, 8,43 External tooth washer, 11 Support part, 11a Positioning hole, 12 First holding part, 13 Second holding part, 12a, 12b Screw through hole, 12c Positioning protrusion, 12d Protrusion, 12e First part, 12f Second part, 13a notch, 13b third part, 21 top surface part, 21a hole, 21b first protrusion, 21c second protrusion, 22, 62 female thread part, 31 through hole, 32 ground connection land part, 41, 63 male thread part, 51 conductive metal part, 61 support part.

Claims (6)

A first holding portion provided with at least one screw through hole;
A second holding part provided with a notch;
A support portion connecting the first and second holding portions;
A circuit board fixture comprising a conductive support member comprising:
In a state where the first holding part of the first support member and the second holding part of the second support member are arranged with a circuit board provided with a through hole interposed therebetween, And the second holding part are in contact with each other, the screw through hole provided in the first holding part, the notch provided in the second holding part, and the circuit board And the through hole for screw provided in the first holding part, the notch provided in the second holding part, and the circuit board. Using the first support member, the second support member, and the screw fixing member by screwing the screw inserted into the through hole into the female screw formed on the screw fixing member. The circuit board can be held between the first and second support members. ,
Circuit board fixture. The first holding portion of the support member has a U-shaped cross section including a first portion extending perpendicularly to a direction in which the support portion extends, and a second portion obtained by folding the first portion. ,
Two screw through holes provided in the first holding portion are provided through the first portion and the second portion,
The second holding portion of the column member includes a third portion extending perpendicularly to a direction in which the support portion extends,
The notch provided in the second holding portion is provided at a tip of the third portion;
The second holding portion of the second column member and the circuit board are fitted to the first holding portion of the first column member;
The circuit board fixture according to claim 1. A positioning projection is provided at the tip of the second portion of the first holding portion of the support member,
A positioning hole is provided in the support portion of the support member,
The first holding portion in a state where the positioning protrusion of the first holding portion of the first support member is fitted in the positioning hole of the support portion of the second support member. The screw through hole provided in the upper portion and the notch provided in the second holding portion overlap in plan view,
The circuit board fixture according to claim 2. A diameter of the screw through hole provided in the first portion of the first holding portion of the column member is larger than a diameter of a head of the screw inserted into the screw through hole. A diameter of the screw through hole provided in the second portion of the holding portion is smaller than a diameter of a head of the screw inserted into the screw through hole;
The circuit board fixture according to claim 2 or claim 3. The second portion of the first holding portion in a state where the second holding portion and the circuit board of the second column member are fitted to the first holding portion of the first column member. At least one protrusion is provided on the surface of the second holding portion that contacts the third portion.
The circuit board fixture according to any one of claims 2 to 4. The screw fixing member includes a top surface portion provided at one end of the female screw,
The top surface portion includes a hole connected to the female screw, a first protrusion on one side, and a second protrusion on the other side,
The height of the positioning hole provided in the support part is the sum of the height of the first protrusion of the top surface part and the height of the positioning protrusion of the first holding part,
The positioning protrusion provided on the first holding portion of the first support member and the first protrusion provided on the top surface portion of the screw fixing member include the first protrusion of the second support member. The screw through hole provided in the first holding part and the cut provided in the second holding part of the other column member in a state of being fitted in the positioning hole of the support part. The notch and the hole of the female screw of the screw fixing member overlap in plan view,
The height of the second protrusion provided on the top surface portion of the screw fixing member is equal to the height of the positioning hole provided on the support portion,
In a state where the second protrusion provided on the top surface portion of the screw fixing member is fitted in the positioning hole provided on the support portion of the support member, the second holding portion of the support member. The notch provided on the screw fixing member and the female screw hole of the screw fixing member overlap in plan view,
The circuit board fixture according to any one of claims 3 to 5.

Images