DIN rail mounting device

Abstract

To provide a mounting device that allows for easy installation and removal of equipment from a DIN rail, prevents pinching of surrounding wiring cables, and eliminates rattling when installed. [Solution] An opening is provided on the mounting surface of the DIN rail 1 of the equipment, and a mounting plate 21 is provided that corresponds to the opening and is fixed to the equipment. The equipment has a fixed engaging member 22 fixed to the mounting plate 21 on the outside, and a movable engaging member 24 that can be displaced in the approach-to-away direction along the mounting plate 21 relative to the fixed engaging member 22. The equipment has a pair of engaging members 22 and 24 that can engage with a pair of engaging pieces 1a and 1b of the DIN rail 1 in a way that allows them to engage and disengage. The equipment has a spring member 25 located on the inside of the equipment, which is supported at one end by the mounting plate 21 and connected at the other end by a connecting mechanism 24a, 33a that allows the movable engaging member 24 to move toward the fixed engaging member 22 when the equipment is mounted on the DIN rail.

Description

【Technical Field】 【0001】 The present invention relates to an attachment device for attaching equipment such as a power supply device to a DIN rail. 【Background Art】 【0002】 Conventionally, various configurations have been known as this type of attachment device. For example, rail engagement means having first and second engagement claw portions that are detachably engaged with first and second engagement piece portions of a DIN rail are provided on the DIN rail attachment surface portion of equipment, and the equipment is attached to the DIN rail by this rail engagement means. As the rail engagement means, an engagement recess is formed along the lateral direction in a plate body, a first engagement claw portion is formed in the upper portion of the engagement recess, a slider lock groove portion is formed in the lower portion of the plate body so as to be orthogonal to the engagement recess, and a slide lock member is urged upward by a spring member in this slider lock groove portion and is provided slidably guided by both side walls of the slider lock groove portion, and a second engagement claw portion provided at the tip of the slide lock member projects into the engagement recess. And, on the DIN rail attachment surface portion, a vibration absorption portion for absorbing vibration by interfering with the DIN rail when vibration is applied to the equipment is provided (Patent Document 1). 【0003】 And, to attach the equipment to the DIN rail, an operator holds the equipment by hand, hooks the first engagement claw portion on the first engagement piece portion of the DIN rail, moves the equipment toward the DIN rail side, and presses the second engagement claw portion of the slide lock member against the second engagement piece portion of the DIN rail. By the component force generated on the inclined surface portion of the second engagement claw portion of this pressing force, the slide lock member is moved downward against the spring force of the spring member, the DIN rail is engaged with the engagement recess, the slide lock member is moved upward by the spring force of the spring member, and the second engagement claw portion is engaged with the second engagement piece portion of the DIN rail. In this engaged state, the second engagement piece portion of the DIN rail joins with the upper end portions of both side walls of the slider lock groove portion on both sides of the second engagement claw portion, and the vertical movement of the rail engagement means with respect to the DIN rail is restricted. 【0004】 On the other hand, to remove the equipment from the DIN rail, the worker holds the slide lock member by hand and pulls it downward against the spring force to release the engagement between the second engaging claw and the second engaging piece of the DIN rail. While maintaining the released state, the equipment is moved away from the DIN rail, releasing the connection between the upper ends of both side walls of the slider lock groove and the second engaging piece of the DIN rail, as well as the engagement between the first engaging claw and the first engaging piece of the DIN rail, and thus removing the equipment. [Prior art documents] [Patent Documents] 【0005】 [Patent Document 1] Patent No. 4151511 [Overview of the Initiative] [Problems that the invention aims to solve] 【0006】 In the DIN rail mounting device described in Patent Document 1, when equipment is mounted on the DIN rail, the second engaging piece of the DIN rail engages with the second engaging piece, and both sides of the second engaging claw are joined to the upper ends of the side walls of the slider lock groove, thereby restricting the vertical movement of the rail engaging means with respect to the DIN rail. Therefore, by providing this restriction and vibration absorption, rattling and vibrations and abnormal noises caused by rattling when equipment is mounted on the DIN rail can be almost completely eliminated. 【0007】 However, because the vertical movement of the rail engagement mechanism with respect to the DIN rail is restricted, removing the equipment from the DIN rail requires the worker to hold the slide lock member by hand and pull it downward against the spring force to release the engagement between the second engagement claw and the second engagement piece of the DIN rail. This release state, while the worker is holding the slide lock member downward, must be maintained while the equipment is detached from the DIN rail, resulting in poor work efficiency. Furthermore, because the spring member is exposed, there is a risk of contact with surrounding wiring cables when attaching or detaching the equipment from the DIN rail, potentially pinching the cables or, in the worst case, cutting the pinched cables. 【0008】 This invention has been made in view of these problems, and aims to provide a DIN rail mounting device that not only prevents rattling and vibrations and abnormal noises caused by rattling when equipment is mounted on the DIN rail, but also allows for easy mounting and removal of equipment from the DIN rail, and prevents pinching of surrounding wiring cables by the spring member. [Means for solving the problem] 【0009】 To achieve the above objective, one embodiment of the mounting device for a DIN rail according to the present invention is a device for attaching equipment to a DIN rail in a manner that allows for the attachment and detachment of equipment, comprising: a mounting plate fixed to the equipment corresponding to an opening provided on the DIN rail mounting surface of the equipment; a fixed engaging member located on the outside of the equipment and fixed to the mounting plate; a movable engaging member that is displaceable in an approach-to-away direction along the mounting plate relative to the fixed engaging member, and a pair of engaging members that engage detachably with a pair of engaging pieces provided at the widthwise end of the DIN rail; and a spring member located on the inside of the equipment, which is connected to the movable engaging member by a connecting mechanism such that one end is supported by the mounting plate and the other end is inserted through an elongated hole provided in the mounting plate in a manner that allows for movement in the detachment direction of the fixed engaging member, so as to bias the movable engaging member toward the fixed engaging member when the equipment is mounted on the DIN rail. 【0010】 According to this embodiment, since the spring member is located inside the device, when attaching or detaching the device from the DIN rail, it does not come into contact with surrounding wiring cables, etc., and there is no risk of pinching wiring cables, etc. Attaching the device to the DIN rail can be easily done by an operator holding the device with one hand. Furthermore, when the device is attached to the DIN rail, the movable engaging member can be displaced within the range of the elongated hole relative to the mounting plate, so when removing the device from the DIN rail, the operator only needs to move the device upward with one hand. This displaces the mounting plate upward, first releasing the engagement of the fixed engaging member, and then releasing the engagement of the movable engaging member, allowing for easy removal. This removal can be performed with the interface connector on the device and the external connector still connected. 【0011】 In another embodiment, as described above, the engagement piece of the pair of engaging members has a rounded surface that engages with the DIN rail from the width direction of the DIN rail. According to this embodiment, the engagement between the engagement piece and the rounded surface is in a tight fit without any gaps, so that there is no rattling or vibration and noise caused by rattling when the equipment is installed. 【0012】 In yet another embodiment, in each of the above embodiments, the spring member consists of two coil springs spaced apart perpendicular to the biasing direction of the movable engaging member, with both ends of each coil spring supported by a pair of support plates, one of which is a fixed support plate fixed to the mounting plate, and the other support plate is a movable support plate connected to the movable engaging member by a connecting mechanism that passes through an elongated hole in the mounting plate. In this embodiment, the spring action on the movable engaging member is stabilized by the two coil springs supported by the pair of support plates. [Effects of the Invention] 【0013】 According to the present invention, the installation and removal of equipment from a DIN rail can be performed easily and reliably, even in narrow installation spaces. In particular, removal is easy, and there is no rattling, vibration, or abnormal noise when the equipment is installed. Furthermore, surrounding wiring cables are not pinched during the installation and removal of equipment. [Brief explanation of the drawing] 【0014】 [Figure 1] A perspective view of a device equipped with a mounting device according to one embodiment of the present invention. [Figure 2] This is a rear view showing the equipment mounted on a DIN rail. [Figure 3] This is an end view showing the engagement state between a pair of engaging members provided on the mounting plate and the DIN rail. [Figure 4] Similarly, a partially enlarged end view showing the engagement surface of the fixed engagement member. [Figure 5] A partially enlarged end view showing the engagement surface of the movable engagement member. [Figure 6] This is a rear view of the mounting plate, which also shows the support state of the coil spring. [Figure 7] A perspective view showing the same fixed engagement member. [Figure 8] A perspective view showing the movable engaging member. [Modes for carrying out the invention] 【0015】 A preferred embodiment of the present invention will be described below with reference to the accompanying drawings. As shown in Figures 1 and 2, the device 11 to be mounted on the DIN rail 1 has an opening 11b on its back surface 11a, which is the DIN rail mounting surface, and this opening 11b extends to the top surface 11c. A mounting plate 21 with an L-shaped side profile is fixed to the device 11 at a position corresponding to the opening 11b. 【0016】 As shown in FIGS. 1 and 3, at a portion corresponding to the opening 11b on the back surface 11a of the mounting plate 21, a fixing engagement member 22 is fixed by screwing each of the fixing screws 23a, 23b (threads not shown) located outside the device 11 into each boss-shaped female screw portion 21a, 21b (threads not shown). Further, a movable engagement member 24 is disposed outside the device 11 and is displaceable in the approaching and separating directions along the mounting plate 21 with respect to the fixing engagement member 22. The fixing engagement member 22 and the movable engagement member 24 constitute a pair of engagement members that engage and disengage with a pair of engagement piece portions 1a, 1b provided at the widthwise ends of the DIN rail 1. 【0017】 As shown in FIGS. 3, 4, and 7, the fixing engagement member 22 has through holes 22a, 22b through which the fixing screws 23a, 23b are inserted, and an engagement claw 22c that engages with the engagement piece portion 1a of the DIN rail 1. This engagement claw 22c has an inclined surface formed such that the horizontal distance from the fixing engagement member main body 22d gradually decreases in FIG. 3, and the engagement surface 22e with the engagement piece portion 1a of the DIN rail 1, which is the inner end of this inclined surface, is formed in an arc shape. 【0018】 As shown in FIGS. 3, 5, and 8, the movable engagement member 24 has boss-shaped female screw portions 24a, 24b (threads not shown) into which the connecting screws 33a, 33b (threads not shown) are screwed, and an engagement claw 24c that engages with the engagement piece portion 1b of the DIN rail 1. This engagement claw 24c has an inclined surface formed such that the horizontal distance from the movable engagement member main body 24d gradually decreases in FIG. 3, and the engagement surface 24e with the engagement piece portion 1b of the DIN rail 1, which is the inner end of this inclined surface, is formed in an arc shape. Further, the outer surface of the tip of the engagement claw 24c is an inclined surface 24f that guides when engaging with the engagement piece portion 1b. 【0019】 As shown in FIGS. 3 and 6, two coil springs 25 and 26, which are spring members, are arranged between the horizontal portions 27a and 27b and the horizontal portions 28a and 28b provided at both longitudinal ends of a pair of support plates 27 and 28 so as to be located inside the device 11. Both ends of each are supported by support screws 29a, 29b, 30a, and 30b (thread profiles are omitted in the drawing) screwed into the respective horizontal portions 27a, 27b, 28a, and 28b to restrict movement in the horizontal direction. Washers are interposed between the respective horizontal portions 27a, 27b, 28a, 28b and the screw heads of the respective support screws 29a, 29b, 30a, 30b. 【0020】 The fixed support plate 28, which is one of the support plates, is fixed to the mounting plate 21 with fixing screws 31a and 31b (thread profiles are omitted in the drawing) (see FIG. 1). Further, the movable support plate 27, which is the other support plate, is connected to the movable engagement member 24 by connecting screws 33a and 33b that are screwed into female screw portions 24a and 24b (see FIG. 8) that are positioned by inserting through elongated holes 32a and 32b provided to extend in the longitudinal direction of the mounting plate 21. As a result, the coil springs 25 and 26 bias the movable engagement member 24 in the approaching direction with respect to the fixed engagement member 22, and are arranged at intervals in a direction perpendicular to this biasing direction. The connecting mechanism is constituted by the connecting screws 33a and 33b and the female screw portions 24a and 24b. 【0021】 Next, the installation procedure will be explained. The worker holds the device 11 with one hand and hooks the engaging claw 22c of the fixed engaging member 22 onto the upper engaging piece 1a of the DIN rail 1. Next, the worker rotates the device 11 using the engaging piece 1a as a pivot point, pressing the inclined surface 24f of the engaging claw 24c of the movable engaging member 24 against the lower engaging piece 1b of the DIN rail 1, and rotates it further. As a result, the movable engaging member 24, while the coil springs 25 and 26 contract, descends through the corresponding elongated holes 32a and 32b, causing the female screw portions 24a and 24b to be positioned, and displaces downward together with the movable support plate 27. When the inclined surface 24f passes over the tip of the engaging piece 1b, the movable engaging member 24 is displaced upward by the elastic biasing force of the coil springs 25 and 26, causing the tip of the engaging piece 1b to engage with the rounded engaging surface 24e. In this state, it is preferable that the female threaded portions 24a and 24b are located at or near the upper edge of the corresponding elongated holes 32a and 32b. 【0022】 At this time, as shown in Figure 3, the base end of the engaging piece 1b engages with the body 24d of the movable engaging member 24. Also, the tip of the engaging piece 1a engages with the curved engaging surface 22e of the engaging claw 22c, and its base end engages with the body 22d of the fixed engaging member 22. As a result, the engaging members 22 and 24, with the elastic biasing force of the coil springs 25 and 26, clamp each of the engaging pieces 1a and 1b of the DIN rail 1 from above and below (in the width direction of the DIN rail 1) with the engaging claws 22c and 24c. This clamping state is reliably maintained by the component forces acting on each engaging surface 22e and 24e and the reaction forces acting on each engaging member body 22d and 24d. In this way, the device 11 can be easily and reliably attached to the DIN rail 1. 【0023】 In this installation operation, even if the installation space for the device 11 is narrow, the worker can easily perform the installation with one hand by gripping the top and bottom surfaces of the device 11. Furthermore, since the coil springs 25 and 26 are located inside the device 11, they do not entangle surrounding wiring cables. In the installed state, there are no gaps between the rounded engagement surfaces 22e and 24e of each engagement member 22 and 24, and the engagement member bodies 22d and 24d, and the engagement pieces 1a and 1b of the DIN rail 1, so there is no rattle. Moreover, if springs with strong elasticity are used for the coil springs 25 and 26, even if the device 11 itself is mounted upside down on the DIN rail 1, the engagement members 22 and 24 can securely grip the engagement pieces 1a and 1b of the DIN rail 1 from the width direction of the DIN rail 1, so there is no rattle. Therefore, if you want the interface connector outlet on the upper surface 11c side of the device 11 to face downwards, you can easily achieve the desired state by inverting the entire device 11 and attaching it to the DIN rail 1. 【0024】 Next, the operation to release the mounting state will be described. The worker simply needs to hold the device 11 with one hand and displace it upward. As a result, the fixed engaging member 22 will be displaced upward along with the mounting plate 21, while the movable engaging member 24 will not be able to be displaced upward because its engaging claw 24c is engaged with the engaging piece 1b, and will remain in its current position. The mounting plate 21 will be displaced upward while compressing the coil springs 25 and 26, and will stop at a position where the lower edges of the elongated holes 32a and 32b are restricted by the female threaded portions 24a and 24b of the movable engaging member 24. At this time, the upward displacement of the fixed engaging member 22 will release its engagement with the engaging piece 1a of the DIN rail 1, and the fixed engaging member 22 can be removed from the engaging piece 1a. As a result, the elastic force of each coil spring 25, 26 can release the engagement between the movable engaging member 24 and the engaging piece 1b of the DIN rail 1, allowing the worker to remove the equipment 11 from the DIN rail 1. 【0025】 Furthermore, the present invention is not limited to the embodiments described above. For example, the opening 11b provided in the device 11 may be provided only on the back surface 11a, which is the mounting surface. In this case, the mounting plate 21 does not need to be formed in an L-shape on the side, and can be a normal flat plate. Also, the spring member is not limited to a coil spring, but may be a leaf spring, and the mounting structure can be modified in various ways. Moreover, the connecting mechanism is not limited to a configuration with connecting screws 33a, 33b and female screw portions 24a, 24b. [Explanation of Symbols] 【0026】 1 DIN rail 1a,1b Engagement piece 11 Equipment 11a Back 11b opening 11c Top side 21 Mounting plate 21a, 21b Female thread section 22 Fixed engagement member 22a,22b through hole 22c Engagement claw 22d Fixed engaging member body 22e Engagement surface 23a, 23b Fixing screws 24 Movable engagement member 24a, 24b Female thread section 24c Engagement claw 24d Movable engagement member body 24e Engagement surface 27 Movable support plate 28 Fixed support plate 27a,27b,28a,28b Horizontal part 29a, 29b, 30a, 30b Support screws 31a, 31b Fixing screws 32a,32b long hole 33a, 33b Connecting screws

Claims

[Claim 1] A device for attaching equipment to a DIN rail in a detachable manner, An opening is provided on the DIN rail mounting surface of the aforementioned device, and a mounting plate is fixed to the device at a position corresponding to this opening. The device is located on the outside and consists of a fixed engaging member fixed to the mounting plate and a movable engaging member that is displaceable in the direction of moving toward and toward the mounting plate relative to the fixed engaging member, and a pair of engaging members that engage with a pair of engaging pieces provided at the widthwise end of the DIN rail, A spring member is located inside the aforementioned device and biases the movable engaging member toward the fixed engaging member when the device is mounted on the DIN rail. One end of the spring member is supported by the mounting plate, and the other end is connected to the movable engaging member by a connecting mechanism through which an elongated hole provided in the mounting plate is movably inserted toward the fixed engaging member toward the fixed engaging member. A DIN rail mounting device characterized by comprising the following features. [Claim 2] In the pair of engaging members, a surface that engages with the DIN rail from the width direction is formed in a rounded shape on each corresponding engaging piece of the DIN rail. The DIN rail mounting device according to feature 1. [Claim 3] The spring member consists of two coil springs spaced apart perpendicular to the biasing direction of the movable engaging member, with both ends of each coil spring supported by a pair of support plates. One support plate is a fixed support plate fixed to the mounting plate, and the other support plate is a movable support plate connected to the movable engaging member by the connecting mechanism that passes through the elongated hole in the mounting plate. A DIN rail mounting device according to claim 1 or 2, characterized by the above.

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