JP6335137B2 - Rail mounting structure - Google Patents

Description

  The present invention relates to a rail mounting structure for attaching a device to a support rail including a long rail main body and a pair of engaging pieces projecting along the rail main body.

In order to install an electric device or the like, generally, various devices are mixedly mounted using a DIN rail. A DIN rail is a support rail provided with a long rail main body and a pair of engaging pieces projecting along the rail main body.
As shown in FIG. 19, the rail mounting structure 100 described in Patent Document 1 has a groove 102 for mounting a support rail on the bottom surface of the device 101. One of the grooves 102a is formed with a first engaging portion 103 that moves in the horizontal direction and engages with one of the engaging pieces, and the other 102b of the groove engages with the other of the engaging pieces. A second engagement portion 104 is formed. The first engagement portion 103 and the second engagement portion 104 are engaged with the engagement pieces of the support rail, respectively, and the device 101 is held on the support rail.

Japanese Utility Model Publication No. 62-126881

However, the rail mounting structure 100 described in Patent Document 1 has the following problems.
That is, as shown in FIG. 19, the first engagement portion 103 is disposed at a part of the bottom surface of the device 101 in the width direction. Therefore, when the device 101 is attached to the support rail, there is a problem in the stability of the device 101 because the length of the portion that presses the support rail is short.
Therefore, the present applicant has devised a rail mounting structure 200 in which the first engaging portion 202 is provided in the entire width of the device 201 as shown in FIGS. An S-shaped biasing member 203 is formed inside the first engagement portion 202. The urging member 203 has a first arc portion 203a fixed to the case 204 of the first engagement portion 202, and a second arc portion 203b extending from the first arc portion 203a.

  However, as shown in FIG. 18, when the device 201 is attached to the support rail, the tip portion 203 c of the second arc portion 203 b abuts on the locking portion 201 a formed on the bottom surface of the device 201, so that the second arc portion 203b is elastically deformed. At this time, since the first arc portion 203a is fixed, the second arc portion 203b is more easily deformed, and the first arc portion 203a is not elastically deformed unless the second arc portion 203b is deformed. Therefore, stress concentration occurs in the easily deformable second arc portion 203b, and the biasing member 203 may be plastically deformed or damaged.

  An object of the present invention is to provide a rail mounting structure capable of dispersing the stress applied to the biasing member and uniformly deforming the entire biasing member in a well-balanced manner. To do.

In order to solve the above problems, the rail mounting structure of the present invention has the following configuration .

( 1 ) In a rail mounting structure in which a device is attached to a support rail including a long rail main body and a pair of engaging pieces projecting along the rail main body, the device includes a device main body and a mounting portion. And the mounting portion includes a first engagement portion that engages with one of the engagement pieces, and a second engagement portion that engages with the other of the engagement pieces. The portion includes a biasing member that presses the mounting portion against the engagement piece, and a case that is slidably held in a direction orthogonal to the support rail and covers the biasing member, The urging member has a restricting portion for restricting the movement of the urging member, one end of the urging member is fixed to the case, and the other end of the urging member is formed in an arc shape. it is an end, the biasing member is S-shaped, a first arcuate portion which is fixed to said casing And extending from the first arcuate portion, having a second arcuate portion is a free end, the second arcuate portion, having the restriction portion, and wherein.

( 2 ) In the rail mounting structure described in ( 1 ), the restricting portion is a convex portion formed at a position facing the tip of the second arc portion.

( 3 ) In the rail mounting structure described in ( 1 ), the cross-sectional area of the first arc portion is smaller than the cross-sectional area of the second arc portion.

( 4 ) In the rail mounting structure according to any one of (1) to ( 3 ), the second engagement portion includes a pair of urging members that press the engagement piece in a vertical direction. It is characterized by this.

(1) In a rail mounting structure in which a device is attached to a support rail having a long rail main body and a pair of engaging pieces projecting along the rail main body, the device includes a device main body and a mounting portion. And the mounting portion includes a first engagement portion that engages with one of the engagement pieces, and a second engagement portion that engages with the other of the engagement pieces. The portion includes a biasing member that presses the mounting portion against the engagement piece, and a case that is slidably held in a direction orthogonal to the support rail and covers the biasing member, The urging member has a restricting portion for restricting the movement of the urging member, one end of the urging member is fixed to the case, and the other end of the urging member is formed in an arc shape. Since the biasing member is bent, when the biasing member is bent, the biasing member is easily deformed. There is hardly deformed parts, can be appropriately stopping the deformation of the deformable portion by a restriction portion, it is possible to deform the deformation hardly portion. Thereby, the stress of the urging member can be dispersed, and the entire urging member can be deformed uniformly and in a balanced manner.

(2) In the rail mounting structure according to (1), the urging member has an S-shape, and a first arc portion fixed to the case and a first arcuate portion that is held to be swingable with respect to the mounting portion. Since the second arc portion has the restricting portion, the second arc portion has the restricting portion, so that the second arc portion that is easily deformed can be deformed. The first arc portion that can be appropriately stopped and is difficult to deform can be deformed. Thereby, the stress of a 1st circular arc part and a 2nd circular arc part can be disperse | distributed, and the whole can be deformed uniformly with sufficient balance.

(3) In the rail mounting structure according to (2), the restricting portion is a convex portion formed at a position facing the tip of the second arc portion, so that the second arc portion Is bent, the convex portion comes into contact with the first arc portion. When the convex portion comes into contact with the first arc portion, it is possible to appropriately stop the deformation of the easily deformable second arc portion and to deform the first arc portion that is difficult to deform. Thereby, the stress of a 1st circular arc part and a 2nd circular arc part can be disperse | distributed, and the whole can be deformed uniformly with sufficient balance.

(4) In the rail mounting structure according to (2), since the cross-sectional area of the first arc portion is smaller than the cross-sectional area of the second arc portion, the second arc portion Even if it bends, since the cross-sectional area is larger than that of the first arc portion, the deformation of the second arc portion can be stopped appropriately, and the first arc portion that is difficult to deform can be deformed. Thereby, since a 1st circular arc part and a 2nd circular arc part are deformed with sufficient balance, stress concentration can be prevented.

(5) In the rail mounting structure according to any one of (1) to (4), the second engagement portion includes a pair of urging members that press in a vertical direction against the engagement piece. Since the force for holding the device from the horizontal direction and the vertical direction works, the holding force of the device can be reliably maintained.

It is a front view of the rail attachment structure concerning a 1st embodiment. It is a bottom view of the rail mounting structure which concerns on 1st Embodiment. It is a front view of the attachment part of the state which removed the support rail. It is a left view of the attaching part of the state which removed the support rail. It is a front view of the case of a 1st engaging part. It is the figure seen from the arrow X direction of FIG. It is the figure seen from the arrow Y direction of FIG. It is a bottom view of an attaching part in the state where a support rail was removed. It is a bottom view of the attaching part of the state which attached the support rail. It is a bottom view of the attachment part in the state in the middle of attaching the support rail. It is a bottom view of an attaching part in the state where a biasing member is compressed to the maximum during attachment and detachment of a support rail. It is a figure which shows the procedure which attaches a support rail to an apparatus in time series. It is a figure which shows the procedure which removes a support rail from an apparatus in time series. It is a bottom view of the attachment part of the rail attachment structure which concerns on 2nd Embodiment of the state which removed the support rail. It is a bottom view of the attachment part of the rail attachment structure which concerns on 2nd Embodiment of the state after attaching a support rail. It is a bottom view of the attachment part of the rail attachment structure which concerns on 2nd Embodiment at the time of removing a support rail. It is a bottom view of the apparatus of the conventional rail mounting structure of the state which attached the support rail. It is a bottom view of the conventional rail attachment structure at the time of removing a support rail. It is a perspective view of the rail mounting structure of patent document 1.

The rail mounting structure 1 of the present invention will be described in detail below with reference to the drawings.
<First Embodiment>
The structure of the rail mounting structure 1 of 1st Embodiment of this invention is demonstrated using FIGS. 1-7. FIG. 1 is a front view of a rail mounting structure 1 according to a first embodiment of the present invention, and FIG. 2 is a bottom view thereof. FIG. 3 is a front view of the mounting portion 5 with the support rail 2 removed, and FIG. 4 is a left side view thereof. FIG. 5 is a front view of the case 62 of the first engagement portion 6. 6 is a view seen from the direction of arrow X in FIG. 5, and FIG. 7 is a view seen from the direction of arrow Y in FIG. In FIGS. 1 to 4, the internal configuration of the first engaging portion 6 and the second engaging portion 7 is indicated by a dotted line.

  The rail mounting structure 1 is a combination of a support rail 2 and a device 3 as shown in FIG. The support rail 2 includes a long rail main body 21 and a pair of first engagement pieces 22 and second engagement pieces 23 protruding along the rail main body 21. The device 3 includes a device body 4 and a mounting portion 5. The attachment portion 5 includes a first engagement portion 6 that engages with the first engagement piece 22 and a second engagement portion 7 that engages with the second engagement piece 23.

As shown in FIG. 2, the first engaging portion 6 is formed in a substantially S-shaped urging member 61, a case 62 covering the urging member 61, and a hollow shape, and the case 62 is formed in the hollow portion. And a locking portion 64 for locking the front end of the urging member 61.
The urging member 61 presses the attachment portion 5 against the first engagement piece 22. As shown in FIG. 2, the urging member 61 has a first arc portion 61a fixed to the case 62, and a second arc portion 61b that extends from the first arc portion 61a and is a free end. An arcuate tip portion 61c is formed at the tip of the second arc portion 61b, and is held so as to be swingable with respect to a locking portion 64 described later. A limiting convex portion 61d that protrudes toward the first arc portion 61a is formed at a position facing the tip portion 61c. The restricting convex portion 61d restricts the movement of the urging member 61.

  As shown in FIGS. 2 and 3, on the side of the case 62 where the first arc portion 61 a is fixed, a tapered first engagement surface 62 a covering the entire width of the device 3, and a first engagement piece A first engagement groove 62b into which 22 is inserted is formed. As shown in FIG. 6, a cover 62c that covers the urging member 61 and an abutment surface 62g that abuts the holder 63 are formed on the surface opposite to the surfaces of the first engagement surface 62a and the first engagement groove 62b. Has been. The cover 62c is slidably held on the inner surface of the holder 63. The cover 62c prevents foreign matters such as dust from adhering to the urging member 61. As shown in FIG. 5, the cover 62 c branches into two from the vicinity of the center toward the outside of the device 3. One branch 62d is formed integrally with one surface of the cover 62c, and the other 62e is formed with a pair of engaging projections 62f at the tip. The engaging convex part 62 f is engaged with an engaging concave part 63 c of the holder 63 described later so that the case 62 does not come off the holder 63.

As shown in FIG. 3, the holder 63 is formed integrally with the attachment portion 5. The holder 63 is formed in a hollow shape, and the case 62 is slidably held in the hollow portion 63a. As shown in FIG. 4, the holder 63 has a substantially U-shaped opening 63 b on the left side surface. Engagement recesses 63c that engage with the engagement projections 62f of the case 62 are formed at both ends of the opening 63b.
As shown in FIG. 4, the mounting portion 5 is formed with a locking portion 64 for locking the front end portion 61 c of the urging member 61. As shown in FIG. 2, the locking surface 64 a of the locking portion 64 to which the distal end portion 61 c is locked is formed in an arc shape so that the distal end portion 61 c of the urging member 61 can swing.

  As shown in FIG. 2, the second engagement portion 7 has a pair of urging members 71 and 72 that press in the direction perpendicular to the second engagement piece 23 in the width direction of the attachment portion 5. Between the pair of urging members 71 and 72, a fixing portion 73 fixed to the attachment portion 5 is disposed. As shown in FIG. 3, the urging members 71 and 72 form a smooth slope downward when the support rail 2 is not attached. When the support rail 2 is attached, the lower surfaces of the urging members 71 and 72 are arranged at the same position as the surface of the fixed portion 73 and are urged downward in FIG. The second engaging portion 7 has a tapered second engaging surface 7a and a second engaging groove 7b into which the second engaging piece 23 is inserted. The fixing portion 73 is formed with an insertion portion 73a for temporarily inserting the tip of the second engagement piece 23.

Next, the operation of the rail mounting structure 1 will be described below with reference to the drawings. 8 is a bottom view of the attachment portion 5 with the support rail 2 removed, and FIG. 9 is a bottom view of the attachment portion 5 with the support rail 2 attached. FIG. 10 is a bottom view of the attachment portion 5 in a state where the support rail 2 is being attached, and FIG. 11 is a bottom view of the attachment portion 5 in a state where the biasing member 61 is maximally compressed while the support rail 2 is being attached. FIG. FIG. 12 is a diagram showing a procedure for attaching the support rail 2 to the device 3, and FIG. 13 is a diagram showing a procedure for removing the support rail 2 from the device 3 in time series. 12 (1) to 12 (3) and FIG. 13 (5), the attachment portion 5 corresponds to FIG. The attachment portion 5 in FIG. 12 (4) corresponds to FIG. 12 (5) and FIGS. 13 (2) to 13 (4) correspond to FIG. The attachment portion 5 in FIG. 13A corresponds to FIG.
8 to 12, the internal configuration of the first engaging portion 6 and the second engaging portion 7 is indicated by a dotted line. Moreover, although the apparatus 3 is normally detached | attached with the support rail 2 fixed, in FIG.12 and FIG.13, in order to clarify the effect | action of the attachment part 5, it illustrates in the state which fixed the attachment part 5. Yes.

First, the operation when the device 3 is attached to the support rail 2 in the rail attachment structure 1 will be described.
As shown in FIG. 12 (1), the support rail 2 is slid in the direction of arrow A, and the second engagement piece 23 of the support rail 2 is inserted into the second engagement groove 7 b of the second engagement portion 7. At this time, since the urging members 71 and 72 have no protrusions and have a smooth slope, the second engagement piece 23 can be easily attached. Next, as shown in FIG. 12 (2), while the second engagement piece 23 is inserted into the insertion portion 73a in the direction of arrow B, the first engagement piece 22 is moved to the arrow as shown in FIG. 12 (3). Move in the D direction. Further, the second engagement piece 23 is pressed against the urging members 71 and 72 of the second engagement portion 7 in the direction of arrow C. At this time, the urging members 71 and 72 can be pressed with a small force since the rotation can be performed with a moment from the point where the second engagement groove 7b and the second engagement piece 23 are in contact with each other. In the urging member 61 of the first engaging portion 6 in FIGS. 12A to 12C, no stress concentration occurs as shown in FIG.

  Next, as shown in FIG. 12 (4), the second engagement piece 23 is pressed in the direction of arrow E, and the first engagement piece 22 is pressed in the direction of arrow F. The second engagement piece 23 presses the urging members 71 and 72 in the vertical direction of the second engagement piece 23. On the other hand, when the first engagement piece 22 advances along the first engagement surface 62a of the first engagement portion 6, the case 62 slides within the holder 63 and moves to the outside of the device 3 (in the direction of arrow G). Move towards. In the urging member 61 in FIG. 12 (4), as shown in FIG. 10, the restricting convex portion 61d is in contact with the first arc portion 61a. At this time, when compared with the biasing member 61 with the support rail 2 shown in FIG. 9 attached, the opening distance R1 between the limiting convex portion 61d and the first arc portion 61a is the first convex portion 61d and the first convex portion 61d in FIG. Since the arc portion 61a is in contact, it is 0 (zero). On the other hand, the first arc portion 61a that is difficult to deform is the opening distance R2 of the first arc portion 61a in FIG. 9, whereas the opening distance R3 is smaller than R2 in FIG. 10 (R3 <R2). That is, the second arc portion 61b that is easily deformed by the restricting convex portion 61d can be appropriately stopped, and the first arc portion 61a that is difficult to deform can be deformed. Thereby, stress can be disperse | distributed to the 1st circular arc part 61a and the 2nd circular arc part 61b, and the whole can be uniformly deformed with sufficient balance.

  Then, as shown in FIG. 12 (5), when the tips of the first engagement surface 62a and the first engagement piece 22 come into contact with each other, the contact surface 62g of the case 62 comes into contact with the holder 63, and the arrow H Move outward as much as possible in the direction. In the urging member 61 in FIG. 12 (5), as shown in FIG. 11, the restricting convex portion 61d is in contact with the first arc portion 61a. At this time, the opening distance between the limiting convex portion 61d and the first arc portion 61a is 0 (zero). On the other hand, since the first arc portion 61a which is difficult to deform is deformed by the contact of the restricting convex portion 61d with the first arc portion 61a, the opening distance R4 of the first arc portion 61a is as shown in FIG. It becomes smaller than 10 opening distance R3 (R4 <R3). At this time, stress is generated in the second arc portion 61b, but the second arc portion 61b is within a range in which there is no risk of plastic deformation or damage.

When the first engagement piece 22 exceeds the first engagement surface 62a, the first engagement piece 22 engages with the first engagement groove 62b. Thus, the support rail 2 is attached to the attachment portion 5 as shown in FIG. At this time, the first engagement groove 62b is at the full width of the device 3 and presses the first engagement piece 22. Therefore, the support rail 2 is not easily inclined, and a stable holding force can be obtained.
In the first engagement portion 6, the urging member 61 is urged in a direction orthogonal to the support rail 2, and in the second engagement portion 7, the urging members 71 and 72 are urged in the vertical direction of the support rail 2. Therefore, the support rail 2 is supported from two directions. For this reason, the support rail 2 is not easily detached from the mounting portion 5.

Next, in the rail mounting structure 1, an operation when the device 3 is detached from the support rail 2 will be described with reference to FIG.
FIG. 13 (1) shows a state where the support rail 2 is attached. From this state, as shown in FIG. 13B, when the support rail 2 is pressed in the direction of arrow J, the case 62 slides within the holder 63 and moves toward the outside of the device 3. At this time, the urging member 61 inside the case 62 is bent as shown in FIG. That is, since the second arc portion 61b is easily deformed, it is first deformed. However, when the limiting convex portion 61d in the second arc portion 61b comes into contact with the first arc portion 61a, the first arc portion 61a that is difficult to deform starts to deform. Thereby, the stress concerning the 2nd circular arc part 61b can be disperse | distributed, and the stress concentration with respect to the urging | biasing member 61 can be disperse | distributed uniformly with sufficient balance.
Then, as shown in FIG. 13 (3), when the support rail 2 is pressed in the direction of arrow L, the engagement of the second engagement piece 23 is released, and the second engagement piece 23 is moved in the direction of arrow K. Move. As shown in FIG. 13 (4), the first engagement piece 22 is moved in the arrow M direction while pressing the first engagement piece 22 in the arrow N direction, thereby engaging the first engagement piece 22. Is also released. And as shown to FIG. 13 (5), the support rail 2 can be completely removed from an attachment part by moving to the arrow P direction.

Here, in the first engagement portion 6, the urging member 61 is urged in a direction orthogonal to the support rail 2, and in the second engagement portion 7, the urging members 71 and 72 are in the vertical direction of the support rail 2. Since it is energized, the support rail 2 is supported from two directions. Therefore, since the holding force at the time of attachment can be disperse | distributed, each force can be reduced and the force concerning the 1st engaging part 6 and the 2nd engaging part 7 at the time of attachment / detachment can be reduced. . Thereby, the desorption force at the time of removal can be made small, and the demountability of the support rail 2 can be improved. Therefore, the apparatus 3 can be attached to the support rail 2 with a slight force, and the stability and holding force at the time of attachment can be maintained.
Moreover, since the front-end | tip part 61c is hold | maintained so that sliding with the latching surface 64a of the latching | locking part 64 is possible, the twist of the biasing member 61 can be prevented and it can deform | transform smoothly. Therefore, a stable holding force can be obtained. Further, even if it is repeatedly used, the holding power is hardly lowered, so that a stable holding power can be obtained.

  As described above, according to the rail mounting structure 1 of the present invention, the long rail body 21, the first engagement piece 22 and the second engagement piece 23 projecting along the rail body 21 are provided. In the rail mounting structure 1 for mounting the device 3 to the provided support rail 2, the device 3 has a device main body 4 and a mounting portion 5, and the mounting portion 5 is engaged with the first engagement piece 22. Having the engagement portion 6 and the second engagement portion 7 that engages with the second engagement piece 23, the first engagement portion 6 presses the attachment portion 5 against the first engagement piece 22. The biasing member 61 has a case 62 that is slidably held in a direction orthogonal to the support rail 2 and covers the biasing member 61. The biasing member 61 limits the movement of the biasing member 61. One end of the urging member 61 is fixed to the case 62, and the other end of the urging member 61 is arcuate. Since the biasing member 61 is bent, the biasing member 61 has a portion that is easily deformed and a portion that is not easily deformed, but is deformed by the restricting convex portion 61d. The deformation of the easy part can be stopped appropriately, and the part that is difficult to deform can be deformed. Thereby, the stress of the urging member 61 can be dispersed and the entire urging member 61 can be deformed uniformly and in a balanced manner.

  The urging member 61 has an S-shape, and includes a first arc portion 61a fixed to the case 62 and a second arc portion 61b that is swingably held with respect to the attachment portion 5, a second arc portion 61b is characterized by having a restricting convex portion 61d, and the second arc portion 61b having the restricting convex portion 61d can appropriately stop the deformation of the easily deformable second arc portion 61b, The first arc portion 61a that is difficult to deform can be deformed. Thereby, the stress of the 1st circular arc part 61a and the 2nd circular arc part 61b can be disperse | distributed, and the whole can be deformed uniformly with sufficient balance.

  Since the limiting convex portion 61d is a convex portion formed at a position facing the tip end portion 61c of the second arc portion 61b, when the second arc portion 61b is bent, the limiting convex portion 61d is Abuts on one arc portion 61a. When the restricting convex portion 61d is in contact with the first arc portion 61a, the deformation of the easily deformable second arc portion 61b can be appropriately stopped, and the first arc portion 61a that is difficult to deform can be deformed. Thereby, the stress of the 1st circular arc part 61a and the 2nd circular arc part 61b can be disperse | distributed, and the whole can be deformed uniformly with sufficient balance.

  Since the second engaging portion 7 has a pair of urging members 71 and 72 that press in the vertical direction against the second engaging piece 23, the device 3 is held from the horizontal direction and the vertical direction. Since the force for doing this works, the holding force of the device 3 can be reliably maintained.

Second Embodiment
Next, the structure of the rail mounting structure 1 of 2nd Embodiment of this invention is demonstrated using FIGS. 14-16. 14 to 16 are bottom views of the mounting portion 5 of the rail mounting structure 1 according to the second embodiment of the present invention. 14 shows a state where the support rail 2 is removed, FIG. 15 shows a state after the support rail 2 is attached, and FIG. 16 shows a state when the support rail 2 is removed. In FIGS. 14 to 16, the internal configuration of the first engaging portion 8 and the second engaging portion 7 is indicated by a dotted line.
The main difference between the first embodiment and the second embodiment is the shape of the urging member of the first engagement portion. In addition, the same structure as the rail attachment structure 1 which concerns on 1st Embodiment attaches | subjects the same reference number, and abbreviate | omits description.

As shown in FIG. 14, the first engaging portion 8 includes a biasing member 81 and a case 82. The biasing member 81 has an S shape, and includes a first arc portion 81 a fixed to the case 82 and a second arc portion 81 b that is held so as to be swingable with respect to the attachment portion 5. The cross-sectional area of the first arc portion 81a is smaller than the cross-sectional area of the second arc portion 81b. The second arc portion 81b having a large cross-sectional area has a limiting portion. In addition, a tip end portion 81c that is slidably held with respect to the attachment portion 5 is formed at the tip end of the second arc portion 81b.
When the support rail 2 is attached or removed, the case 82 of the first engagement portion 8 slides outside the device 3 as shown in FIG. At this time, the urging member 81 inside the first engagement portion 8 starts to deform the deformable second arc portion 81b. However, since the second arc portion 81b is formed to have a large cross-sectional area, it is difficult to deform, and the first arc portion 81a having a small cross-sectional area is greatly deformed at the initial stage. And if the deformation amount of the 1st circular arc part 81a becomes large, the 2nd circular arc part 81b will deform | transform. Thereby, since the 1st circular arc part 81a and the 2nd circular arc part are deformed with sufficient balance, stress concentration can be prevented.

  Since the cross-sectional area of the first arc portion 81a is smaller than the cross-sectional area of the second arc portion 81b, even if the second arc portion 81b is bent, the cross-sectional area is the first arc portion 81a. Is larger, the deformation of the second arc portion 81b can be stopped appropriately, and the first arc portion 81a which is difficult to deform can be deformed. Thereby, since the 1st circular arc part 81a and the 2nd circular arc part 81b are deformed with sufficient balance, stress concentration can be prevented.

In addition, this embodiment is only a mere illustration and does not limit this invention at all. Accordingly, the present invention can naturally be improved and modified in various ways without departing from the gist thereof.
For example, in this embodiment, the shape of the biasing member is S-shaped, but may be C-shaped if the width of the device is large.

DESCRIPTION OF SYMBOLS 1 Rail attachment structure 2 Support rail 3 Equipment 4 Equipment main body 5 Attachment part 6 1st engagement part 7 2nd engagement part 21 Rail main body 22,23 Engagement piece 61 Energizing member 62 Case 61a 1st circular arc part 61b 2nd Arc part 61c Tip part 61d Restriction convex part

Claims (4)

In a rail mounting structure for attaching a device to a support rail comprising a long rail body and a pair of engagement pieces projecting along the rail body,
The device has a device body and a mounting portion,
The attachment portion includes a first engagement portion that engages with one of the engagement pieces, and a second engagement portion that engages with the other of the engagement pieces.
The first engagement portion includes a biasing member that presses the attachment portion against the engagement piece, and a case that is slidably held in a direction orthogonal to the support rail and covers the biasing member. Having
The urging member has a restricting portion that restricts the movement of the urging member, one end of the urging member is fixed to the case, and the other end of the urging member is formed in an arc shape. Be free end,
The urging member has an S-shape, and includes a first arc portion fixed to the case, and a second arc portion that extends from the first arc portion and is a free end.
The second arc portion has the restricting portion;
Rail mounting structure characterized by In the rail mounting structure according to claim 1 ,
The limiting portion is a convex portion formed at a position facing the tip of the second arc portion;
Rail mounting structure characterized by In the rail mounting structure according to claim 1 ,
The cross-sectional area of the first arc portion is smaller than the cross-sectional area of the second arc portion;
Rail mounting structure characterized by In the rail mounting structure according to any one of claims 1 to 3 ,
The second engagement portion has a pair of biasing members that press in a vertical direction against the engagement piece;
Rail mounting structure characterized by

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