Fixing device

Abstract

The utility model discloses a fixing device, and relates to the technical field of PDU installation. The fixing device comprises a supporting frame, a first clamping part and a second clamping part, the supporting frame is provided with an installation space, and the installation space is used for containing a PDU and a bearing piece; the first clamping part and the second clamping part are arranged on the two opposite sides of the supporting frame respectively, at least parts of the first clamping part and the second clamping part extend into the mounting space, a clamping space is formed by the first clamping part and the second clamping part, and the clamping space is used for clamping a bearing piece so that the PDU located in the mounting space can be fixed to the bearing piece; the first clamping part and the second clamping part can get close to each other or get away from each other so as to adjust the size of the clamping space. According to the PDU fixing device, the PDU is tightly pressed at the preset position of the bearing part through the supporting frame, then the size of the clamping space between the first clamping part and the second clamping part is adjusted, and the PDU is fixed to the bearing part, so that rapid installation and fixation of the PDU are achieved, the fixing device is easy and convenient to operate, and the installation efficiency of the PDU can be improved.

Description

Technical Field

[0001] This application relates to the technical field of PDU installation, and particularly to a fixing device. Background Art

[0002] A PDU (Power Distribution Unit) is what we often call a power distribution socket for a cabinet. A PDU is a product designed to provide power distribution for electrical equipment installed in a cabinet, with various series specifications having different functions, installation methods, and different combinations of socket positions, and can provide a suitable rack-mounted power distribution solution for different power environments. The application of a PDU can make the power distribution in the cabinet more orderly, reliable, safe, professional, and aesthetic, and make the maintenance of the power supply in the cabinet more convenient and reliable.

[0003] When a PDU in a cabinet fails, in order to keep the electrical equipment in the cabinet running normally, a spare PDU needs to be installed in the cabinet. In the related art, the spare PDU needs to be installed on the load-bearing column inside the cabinet through fasteners such as cable ties and screws, and the above installation method has the problem of cumbersome operation, resulting in a low installation efficiency of the spare PDU. Summary of the Utility Model

[0004] This application discloses a fixing device to solve the problem of low installation efficiency of the spare PDU in the related art.

[0005] To solve the above technical problems, this application is implemented as follows:

[0006] An embodiment of this application discloses a fixing device for fixing a PDU to a carrier. The fixing device includes a support frame, a first clamping portion, and a second clamping portion;

[0007] The support frame is provided with an installation space for accommodating the PDU and the carrier;

[0008] The first clamping portion and the second clamping portion are respectively provided on opposite sides of the support frame and at least partially extend into the installation space. The first clamping portion and the second clamping portion form a clamping space for clamping the carrier to fix the PDU located in the installation space to the carrier;

[0009] The first clamping portion and the second clamping portion can approach or move away from each other to adjust the size of the clamping space.

[0010] Optionally, the fixing device further includes a third clamping portion, which is connected to the support frame and at least partially extends into the installation space. The third clamping portion is movable within the installation space to relatively fix or separate the PDU from the carrier.

[0011] Optionally, the support frame includes a first plate body, a second plate body, and a third plate body. The first plate body and the second plate body are disposed on the same side of the third plate body and are connected by the third plate body. The first plate body, the second plate body, and the third plate body enclose the installation space;

[0012] The first clamping portion is disposed on the first plate body, the second clamping portion is disposed on the second plate body, and the third clamping portion is disposed on the third plate body.

[0013] Optionally, the first clamping portion includes a first knob and a first clamping plate. The first knob is threadedly connected to the first plate body. One end of the first knob protrudes from the surface of the first plate body facing away from the installation space, and the other end of the first knob extends into the installation space and is connected to the first clamping plate;

[0014] The second clamping portion includes a second knob and a second clamping plate. The second knob is threadedly connected to the second plate body. One end of the second knob protrudes from the surface of the second plate body facing away from the installation space, and the other end of the second knob extends into the installation space and is connected to the second clamping plate;

[0015] The first clamping plate and the second clamping plate form the clamping space. When the first knob rotates relative to the first clamping plate and the second knob rotates relative to the second clamping plate, the first knob and the second knob respectively drive the first clamping plate and the second clamping plate to approach or separate from each other.

[0016] Optionally, the first clamping plate is bent toward the second clamping plate to form a first limiting portion, and the second clamping plate is bent toward the first clamping plate to form a second limiting portion. The first limiting portion and the second limiting portion are respectively used for limiting cooperation with the carrier.

[0017] Optionally, the third clamping portion includes a third knob and a third clamping plate. The third knob is threadedly connected to the third plate body. One end of the third knob protrudes from the surface of the third plate body facing away from the installation space, and the other end of the third knob extends into the installation space and is connected to the third clamping plate. The third clamping plate is used to contact the PDU;

[0018] When the third knob rotates relative to the third clamping plate, the third knob drives the third clamping plate to move within the installation space.

[0019] Optionally, the first knob, the second knob, and the third knob have the same structure and each includes a holding portion and a threaded portion.

[0020] The first clamping plate, the second clamping plate, and the third clamping plate are respectively provided with threaded holes, the threaded portion is in threaded engagement with the threaded holes, one end of the threaded portion is connected to the holding portion, and the other end of the threaded portion is connected to the first clamping plate, the second clamping plate, or the third clamping plate.

[0021] Optionally, the fixing device further includes a reinforcing member. At least one of the first clamping plate, the second clamping plate, and the third clamping plate is provided with the reinforcing member. The reinforcing member is provided with a limiting hole, the limiting hole communicates with the threaded hole, and the threaded portion passes through the limiting hole and the threaded hole respectively.

[0022] Optionally, the holding portion is provided with an anti-slip structure.

[0023] Optionally, at least one of the support frame, the first clamping portion, the second clamping portion, and the third clamping portion is provided with an insulating coating.

[0024] The technical solution adopted in this application can achieve the following technical effects:

[0025] The fixing device disclosed in the embodiment of this application improves the related technology. The disclosed fixing device includes a support frame, a first clamping portion, and a second clamping portion. The support frame is provided with an installation space for accommodating a PDU and a carrier; the first clamping portion and the second clamping portion are respectively provided on opposite sides of the support frame and at least partially extend into the installation space. The first clamping portion and the second clamping portion form a clamping space for clamping the carrier to fix the PDU located in the installation space to the carrier; the first clamping portion and the second clamping portion can approach or move away from each other to adjust the size of the clamping space. With the above solution, first, the PDU is pressed against a preset position of the carrier by the support frame, and then the size of the clamping space between the first clamping portion and the second clamping portion is adjusted to fix the support frame to the carrier by clamping, thus realizing the quick installation and fixation of the PDU. The above fixing solution is easy to operate and can improve the installation efficiency of the PDU. Moreover, since the first clamping portion and the second clamping portion can approach or move away from each other, different sizes of carriers can be adapted, and the adaptation range is relatively wide. Description of the Drawings

[0026] Figure 1 It is a schematic structural diagram of the fixing device disclosed in the embodiment of this application;

[0027] Figure 2 Top view of the fixing device disclosed in the embodiment of the present application;

[0028] Figure 3 Schematic diagram of the assembly structure of the fixing device, PDU and carrier disclosed in the embodiment of the present application.

[0029] Explanation of reference numerals:

[0030] 110 - support frame, 111 - first plate body, 112 - second plate body, 113 - third plate body, 120 - first clamping part, 121 - first knob, 1211 - holding part, 1212 - threaded part, 1213 - anti-slip structure, 122 - first clamping plate, 123 - first limiting part, 130 - second clamping part, 131 - second knob, 132 - second clamping plate, 133 - second limiting part, 140 - third clamping part, 141 - third knob, 142 - third clamping plate, 150 - reinforcing member, 160 - PDU, 170 - carrier. Detailed implementation manners

[0031] To make the objectives, technical solutions and advantages of the present application clearer, the technical solutions of the present application will be clearly and completely described below in conjunction with specific embodiments of the present application and the corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0032] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that such used data can be interchanged under appropriate circumstances so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. are generally of the same type, and the number of objects is not limited. For example, the first object can be one or more.

[0033] The following will detail the technical solutions disclosed in each embodiment of the present application in conjunction with the drawings.

[0034] Please refer to Figures 1 to 3, embodiments of the present application disclose a fixing device for fixing a PDU 160 to a carrier 170. The PDU 160 is installed in an electrical cabinet, and the carrier 170 may include structural members such as crossbeams and columns in the electrical cabinet. The above fixing device may include a support frame 110, a first clamping portion 120, and a second clamping portion 130. The support frame 110 is the structural basis of the fixing device. The support frame 110 is provided with an installation space for accommodating the PDU 160 and the carrier 170. Exemplarily, the support frame 110 may be a U-shaped frame. The support frame 110 can be sleeved on the carrier 170 from the opening, and the PDU 160 is fixed on the carrier 170 in a surrounding manner to achieve rapid installation.

[0035] The support frame 110 can be installed with the carrier 170 by clamping. Specifically, the first clamping portion 120 and the second clamping portion 130 are respectively arranged on opposite sides of the support frame 110. At least part of the first clamping portion 120 and the second clamping portion 130 extends into the installation space. The first clamping portion 120 and the second clamping portion 130 form a clamping space for clamping the carrier 170 to fix the PDU 160 located in the installation space to the carrier 170. It can be understood that the clamping space is located within the installation space. After the support frame 110 preliminarily presses the PDU 160 against the carrier 170, in order to enable stable installation between the support frame 110 and the carrier 170, and between the PDU 160 and the carrier 170, it is necessary to fix the positions of the support frame 110 and the carrier 170. The first clamping portion 120 and the second clamping portion 130 can clamp the carrier 170 from both sides thereof, thereby further fixing the support frame 110 and the PDU 160 to the carrier 170.

[0036] The first clamping portion 120 and the second clamping portion 130 can approach or move away from each other to adjust the size of the clamping space. During the actual installation process, the first clamping portion 120 and the second clamping portion 130 can be first controlled to move away from each other to expand the clamping space, so that the support frame 110 and the PDU 160 can be smoothly and preliminarily aligned and installed with the carrier 170. After adjusting the positions of the support frame 110 and the PDU 160, the first clamping portion 120 and the second clamping portion 130 are then controlled to approach each other to reduce the clamping space. The first clamping portion 120 and the second clamping portion 130 respectively clamp the carrier 170 from both sides thereof, so that the support frame 110, the PDU 160, and the carrier 170 are in a relatively fixed state. It should be noted that when the PDU 160 is fixed by the support frame 110, a certain pressure needs to be applied to the PDU 160 by the support frame 110 to make the PDU 160 closely adhere to the surface of the carrier 170.

[0037] For the manner in which the first clamping portion 120 and the second clamping portion 130 approach or separate from each other, they can be driven by driving members such as motors and cylinders, or the first clamping portion 120 and the second clamping portion 130 can be manually controlled to move relative to each other; alternatively, springs can be respectively arranged between the first clamping portion 120 and the support frame 110 and between the second clamping portion 130 and the support frame 110. By compressing the springs, the first clamping portion 120 and the second clamping portion 130 can be separated from each other. After the springs release the elastic force, the first clamping portion 120 and the second clamping portion 130 will approach each other. With the elastic force provided by the springs, the support frame 110 can also be fixed to the carrier 170 by clamping.

[0038] As can be seen from the above description, the fixing device disclosed in the embodiment of the present application improves the related technology. When installing and fixing the PDU 160, first, the PDU 160 is pressed against a preset position of the carrier 170 by using the support frame 110, and then the size of the clamping space between the first clamping portion 120 and the second clamping portion 130 is adjusted to fix the support frame 110 to the carrier 170 by clamping, thereby realizing the quick installation and fixing of the PDU 160. The above fixing scheme is simple to operate and can improve the installation efficiency of the PDU 160. Moreover, since the first clamping portion 120 and the second clamping portion 130 can approach or separate from each other, different sizes of carriers 170 can be adapted, and the adaptation range is relatively wide.

[0039] Considering that it is difficult to achieve relatively reliable fixation of the PDU 160 only by the pressure applied by the support frame 110, as Figures 1 to 3 shown, the fixing device may further include a third clamping portion 140. The third clamping portion 140 is connected to the support frame 110 and at least partially extends into the installation space. The third clamping portion 140 can move in the installation space to relatively fix or separate the PDU 160 from the carrier 170. By providing the third clamping portion 140, a further fastening force can be applied to the PDU 160, enabling it to be reliably fixed to the carrier 170, thereby avoiding the problem of the PDU 160 falling and being damaged.

[0040] The movement of the third clamping portion 140 in the installation space can be driven by driving members such as motors and cylinders, or the third clamping portion 140 can be manually controlled to move; alternatively, a spring can be arranged between the third clamping portion 140 and the support frame 110, and the elastic force provided by the spring is used to press the PDU 160 against the carrier 170 to achieve stable installation.

[0041] As Figures 1 to 3As shown, the above-mentioned support frame 110 may include a first plate body 111, a second plate body 112, and a third plate body 113. The first plate body 111 and the second plate body 112 are disposed on the same side of the third plate body 113 and are connected through the third plate body 113. The first plate body 111, the second plate body 112, and the third plate body 113 together enclose the above-mentioned installation space. The first plate body 111, the second plate body 112, and the third plate body 113 may be of an integral structure, or may be fabricated separately and then assembled by means such as welding, bonding, and bolt connection.

[0042] The first clamping portion 120 is disposed on the first plate body 111, the second clamping portion 130 is disposed on the second plate body 112, and the third clamping portion 140 is disposed on the third plate body 113. In actual application, the first plate body 111 and the second plate body 112 are respectively located on both sides of the carrier 170, the PDU 160 is located between the third plate body 113 and the carrier 170. The first plate body 111 and the second plate body 112 respectively support the first clamping portion 120 and the second clamping portion 130 to clamp the carrier 170 from both sides, and the third plate body 113 and the third clamping portion 140 can press the PDU 160 against the carrier 170.

[0043] In an alternative embodiment of the present application, as Figures 1 to 3 shown, the first clamping portion 120 may include a first knob 121 and a first clamping plate 122. The first knob 121 is threadedly connected to the first plate body 111. One end of the first knob 121 protrudes from the surface of the first plate body 111 facing away from the installation space, and the other end of the first knob 121 extends into the installation space and is connected to the first clamping plate 122. By rotating the first knob 121, the screwing position of the first knob 121 and the first plate body 111 can be changed to drive the first clamping plate 122 to move in the installation space. The connection manner between the first knob 121 and the first clamping plate 122 may be riveting, welding, bolt connection, etc.

[0044] Similarly, the second clamping portion 130 may include a second knob 131 and a second clamping plate 132. The second knob 131 is threadedly connected to the second plate body 112. One end of the second knob 131 protrudes from the surface of the second plate body 112 facing away from the installation space, and the other end of the second knob 131 extends into the installation space and is connected to the second clamping plate 132. By rotating the second knob 131, the screwing position of the second knob 131 and the second plate body 112 can be changed to drive the second clamping plate 132 to move in the installation space. The connection manner between the second knob 131 and the second clamping plate may be riveting, welding, bolt connection, etc.

[0045] The first clamping plate 122 and the second clamping plate 132 form a clamping space. When the first knob 121 rotates relative to the first clamping plate 122 and the second knob 131 rotates relative to the second clamping plate 132, the first knob 121 and the second knob 131 respectively drive the first clamping plate 122 and the second clamping plate 132 to approach or separate from each other, so that the carrier 170 can be clamped or released. By using the above-mentioned knob method to drive the relative movement of the first clamping plate 122 and the second clamping plate 132, the operation is simple and convenient, which is convenient for the installation and disassembly of the PDU 160 and the carrier 170; moreover, the structure is simple, the stability is good, and it has good durability.

[0046] As Figures 1 to 3 shown, after the support frame 110 and the PDU 160 are fixed on the carrier 170, in order to prevent the carrier 170 from disengaging from the notch of the support frame 110, the first clamping plate 122 can be bent towards the second clamping plate 132 to form a first limiting portion 123, and the second clamping plate 132 can be bent towards the first clamping plate 122 to form a second limiting portion 133. The first limiting portion 123 and the second limiting portion 133 are respectively in limiting cooperation with the carrier 170, and the carrier 170 is limited from the notch of the support frame 110, so that the carrier 170 can be prevented from disengaging from the notch of the support frame 110, further improving the reliability of the installation.

[0047] As Figures 1 to 3 shown, the third clamping portion 140 may include a third knob 141 and a third clamping plate 142. The third knob 141 is threadedly connected to the third plate body 113. One end of the third knob 141 protrudes from the surface of the third plate body 113 facing away from the installation space, and the other end of the third knob 141 extends into the installation space and is connected to the third clamping plate 142. The connection method between the third knob 141 and the third clamping plate 142 may be riveting, welding, bolt connection, etc. The third clamping plate 142 is used to contact the PDU 160. By rotating the third knob 141, the screwing position of the third knob 141 and the third plate body 113 can be changed to drive the third clamping plate 142 to move in the installation space. When the third knob 141 rotates relative to the third clamping plate 142, the third knob 141 can drive the third clamping plate 142 to move in the installation space. When the third knob 141 drives the third clamping plate 142 to approach the PDU 160, the third clamping plate 142 can press the PDU 160 against the carrier 170. When the third knob 141 drives the third clamping plate 142 to move away from the PDU 160, the PDU 160 can be separated and disassembled from the carrier 170.

[0048] As Figures 1 to 3As shown, the structures of the first knob 121, the second knob 131 and the third knob 141 can be the same, and all include a gripping portion 1211 and a threaded portion 1212. The first clamping plate 122, the second clamping plate 132 and the third clamping plate 142 are respectively provided with threaded holes, the threaded portion 1212 is threadedly matched with the threaded hole, one end of the threaded portion 1212 is connected to the gripping portion 1211, and the other end of the threaded portion 1212 is connected to the first clamping plate 122, the second clamping plate 132 or the third clamping plate 142. The gripping portion 1211 is used for being gripped by a user, so that the user can drive the threaded portion 1212 to rotate relative to the threaded hole through the gripping portion 1211, thereby changing the screwing position of the threaded portion 1212 and the threaded hole, and then driving the first clamping plate 122, the second clamping plate 132 or the third clamping plate 142 to move in the installation space.

[0049] In order to improve the reliability of the connection between the threaded portion 1212 and the first clamping plate 122, the second clamping plate 132 or the third clamping plate 142, the fixing device may further include a reinforcement member 150. The reinforcement member 150 may be a block structure. At least one of the first clamping plate 122, the second clamping plate 132 and the third clamping plate 142 is provided with the reinforcement member 150. The reinforcement member 150 may be arranged on the outside of the support frame 110 (the surface of the support frame 110 facing away from the installation space). The connection method between the reinforcement member 150 and the support frame 110 may be bonding, welding, riveting, etc. The reinforcement member 150 is provided with a limiting hole, which is connected to the threaded hole. The threaded portion 1212 is respectively penetrated through the limiting hole and the threaded hole, so as to provide sufficient support for the threaded portion 1212.

[0050] To facilitate the user to rotate the grip portion 1211 and avoid slipping, Figure 1 and Figure 3 As shown, an anti-skid structure 1213 may be provided on the gripping portion 1211 to increase friction. The anti-skid structure 1213 may include an anti-skid groove, an anti-skid protrusion, an anti-skid pattern, and the like.

[0051] To improve the safety of use, an insulating coating may be provided on at least one of the support frame 110 , the first clamping part 120 , the second clamping part 130 and the third clamping part 140 . The insulating coating may include a Teflon coating, a porcelain coating and the like.

[0052] The above embodiments of the present application focus on describing the differences between the various embodiments. As long as the different technical features between the various embodiments are not contradictory, they can be combined to form more specific embodiments. Considering the simplicity of the text, they will not be repeated here.

[0053] The embodiments of the present application have been described above in conjunction with the accompanying drawings. However, the present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative rather than restrictive. Those of ordinary skill in the art, under the inspiration of the present application and without departing from the spirit of the present application and the scope protected by the claims, can still make many forms, all of which fall within the protection scope of the present application.

Claims

1. A fixing device for fixing a PDU (160) to a carrier (170), characterized in that, The fixing device includes a support frame (110), a first clamping portion (120), and a second clamping portion (130); The support frame (110) is provided with an installation space for accommodating the PDU (160) and the carrier (170); The first clamping portion (120) and the second clamping portion (130) are respectively arranged on opposite sides of the support frame (110) and at least partially extend into the installation space. The first clamping portion (120) and the second clamping portion (130) form a clamping space for clamping the carrier (170) to fix the PDU (160) located in the installation space to the carrier (170); The first clamping portion (120) and the second clamping portion (130) can approach or separate from each other to adjust the size of the clamping space.

2. The fixing device according to claim 1, wherein, The fixing device further includes a third clamping portion (140) connected to the support frame (110) and at least partially extending into the installation space. The third clamping portion (140) can move in the installation space to relatively fix or separate the PDU (160) from the carrier (170).

3. The fixing device according to claim 2, characterized in that, The support frame (110) includes a first plate body (111), a second plate body (112), and a third plate body (113). The first plate body (111) and the second plate body (112) are arranged on the same side of the third plate body (113) and are connected by the third plate body (113). The first plate body (111), the second plate body (112), and the third plate body (113) enclose the installation space; The first clamping portion (120) is arranged on the first plate body (111), the second clamping portion (130) is arranged on the second plate body (112), and the third clamping portion (140) is arranged on the third plate body (113).

4. The fixing device according to claim 3, characterized in that, The first clamping portion (120) includes a first knob (121) and a first clamping plate (122). The first knob (121) is threadedly connected to the first plate body (111). One end of the first knob (121) protrudes from the surface of the first plate body (111) facing away from the installation space, and the other end of the first knob (121) extends into the installation space and is connected to the first clamping plate (122); The second clamping portion (130) includes a second knob (131) and a second clamping plate (132). The second knob (131) is threadedly connected to the second plate body (112). One end of the second knob (131) protrudes from the surface of the second plate body (112) facing away from the installation space, and the other end of the second knob (131) extends into the installation space and is connected to the second clamping plate (132); The first clamping plate (122) and the second clamping plate (132) form the clamping space. When the first knob (121) and the first clamping plate (122) rotate relative to each other, and the second knob (131) and the second clamping plate (132) rotate relative to each other, the first knob (121) and the second knob (131) respectively drive the first clamping plate (122) and the second clamping plate (132) to move closer to or away from each other.

5. The fixing device according to claim 4, characterized in that, The first clamping plate (122) is bent toward the second clamping plate (132) to form a first limiting portion (123), and the second clamping plate (132) is bent toward the first clamping plate (122) to form a second limiting portion (133). The first limiting portion (123) and the second limiting portion (133) are respectively used for limiting cooperation with the supporting member (170).

6. The fixing device according to claim 4, characterized in that, The third clamping portion (140) comprises a third knob (141) and a third clamping plate (142); the third knob (141) is threadedly connected to the third plate body (113); one end of the third knob (141) protrudes from a surface of the third plate body (113) that faces away from the installation space; the other end of the third knob (141) extends into the installation space and is connected to the third clamping plate (142); the third clamping plate (142) is used to contact the PDU (160); When the third knob (141) and the third clamping plate (142) rotate relative to each other, the third knob (141) drives the third clamping plate (142) to move within the installation space.

7. The fixing device according to claim 6, characterized in that, The first knob (121), the second knob (131) and the third knob (141) have the same structure and all include a gripping portion (1211) and a threaded portion (1212); The first clamping plate (122), the second clamping plate (132) and the third clamping plate (142) are respectively provided with threaded holes, the threaded portion (1212) is threadedly matched with the threaded hole, one end of the threaded portion (1212) is connected to the holding portion (1211), and the other end of the threaded portion (1212) is connected to the first clamping plate (122), the second clamping plate (132) or the third clamping plate (142).

8. The fixing device according to claim 7, characterized in that The fixing device also includes a reinforcement member (150), and at least one of the first clamping plate (122), the second clamping plate (132) and the third clamping plate (142) is provided with the reinforcement member (150), and the reinforcement member (150) is provided with a limiting hole, and the limiting hole is connected to the threaded hole, and the threaded portion (1212) is respectively penetrated through the limiting hole and the threaded hole.

9. The fixing device according to claim 7, wherein The gripping portion (1211) is provided with an anti-slip structure (1213).

10. The fixing device according to claim 2, characterized in that, At least one of the support frame (110), the first clamping portion (120), the second clamping portion (130) and the third clamping portion (140) is provided with an insulating coating.

Images