A circuit board flame-retardant protection structure, physiotherapy device and medical equipment

Abstract

The utility model relates to circuit protection structure technical field discloses a kind of circuit board flame-retardant protection structure, physiotherapy device and medical equipment, including installation panel, the inside of installation panel is connected with flame-retardant protection piece, and installation gap for installing and isolating circuit board is equipped between flame-retardant protection piece and installation panel;A lock hole and at least one plug-in part are equipped on flame-retardant protection piece, and threaded hole matched with lock hole and the cooperation part equal in number and one-to-one correspondence with the number of plug-in part are equipped on installation panel.The utility model patent in the present application is protected separately to circuit board by flame-retardant protection piece, and utilize a lock hole and at least one plug-in part make flame-retardant protection piece can be conveniently and stably connected on installation panel, solve the poor flame-retardant protection effect problem of prior art in electric appliance element to circuit board structure.

Description

Technical Field

[0001] This utility model relates to the field of circuit protection structure technology, specifically to a flame-retardant protection structure for circuit boards, a physiotherapy device, and medical equipment. Background Technology

[0002] Circuit boards are now widely used in various electrical appliances. To ensure stable operation, they are typically protected by enclosures such as control boxes or enclosures. During use, the circuit board is mounted and fixed to a mounting panel inside the enclosure. Because circuit boards generate a significant amount of heat during operation, this heat accumulation can potentially cause a fire. Therefore, the enclosure and mounting panel must possess excellent insulation and flame-retardant properties. For example, GB 9706.1-2020 stipulates that "the insulating wires inside fire-resistant enclosures must meet at least an FV-1 flammability rating; the insulating materials for connectors, printed circuit boards, and components should have a flammability rating equivalent to or better than FV-2, conforming to GB / T5169.16."

[0003] While existing housings and mounting panels provide good insulation and flame-retardant protection for circuit boards, for equipment with extremely high safety requirements, such as medical devices or physiotherapy equipment, the flame-retardant properties of components like counterweights in these devices are generally poor (for example, the base of certain electromagnetic wave therapy devices in physiotherapy equipment has poor flame-retardant properties and may ignite at high temperatures). When circuit boards and other electrical components are installed close to the base, these poorly flame-retardant components may be damaged by high-temperature combustion. Furthermore, in existing equipment, the inner side of the mounting panel houses other electrical components besides the circuit board. If the circuit board ignites at high temperatures, it can damage these other components, causing even greater losses. Therefore, it is necessary to improve the existing circuit board mounting structure to enhance the safety of the equipment during use. Utility Model Content

[0004] The present invention aims to provide a flame-retardant protection structure for circuit boards, a physiotherapy device, and a medical equipment to solve the problem of poor flame-retardant protection effect of existing technologies for circuit board structures in electrical components.

[0005] To solve the above problems, the present invention adopts the following technical solution: a flame-retardant protection structure for circuit boards, including a mounting panel, a flame-retardant protective component connected to the inner side of the mounting panel, and a mounting gap for mounting and isolating the circuit board between the flame-retardant protective component and the mounting panel.

[0006] The principle and beneficial effects of this solution are as follows: In this application, the mounting panel is an insulating and flame-retardant mounting panel with good insulation and flame-retardant properties. The circuit boards and electrical components in the existing equipment are all installed on the inner side of the mounting panel. By utilizing the insulation and flame-retardant properties of the mounting panel, the user can control the circuit board on the outer side of the mounting panel through buttons, switches and other structures. In this application, a flame-retardant protective component with high flame-retardant performance is fixedly connected to the inner side of the mounting panel. The flame-retardant protective component and the mounting panel form a mounting gap, within which the circuit board is mounted and fixed. The flame-retardant protective component acts as a barrier, isolating the circuit board from other electrical components inside the mounting panel, achieving "installation and isolation" of the circuit board. Even if the circuit board malfunctions and generates high temperatures during use, the mounting panels and flame-retardant protective components on both sides of the circuit board have good insulation and flame-retardant properties, effectively preventing damage to other electrical components mounted inside the mounting panel when the circuit board overheats. It also effectively reduces the risk of damage to the base and other flammable components in existing equipment due to high circuit board temperatures, improving equipment safety during use. This is particularly significant for equipment with high safety requirements, such as medical and physiotherapy equipment. Furthermore, since the flame-retardant protective component and the mounting panel provide insulation and flame retardancy to both sides of the circuit board, they also provide safety protection. As the control center of the equipment, the circuit board operates more stably under this protection.

[0007] Preferably, as an improvement, the flame-retardant protective component has a receiving cavity on the side facing the mounting panel, and the circuit board is located in the receiving cavity.

[0008] In this solution, a receiving cavity is set on the side of the flame-retardant protective component facing the mounting panel. When the flame-retardant protective component is installed inside the mounting panel, the entire circuit board structure is located within the receiving cavity. The flame-retardant protective component, combined with the mounting panel, not only provides safety protection for both sides of the circuit board, but also provides safety protection for the four sides of the circuit board, further enhancing the "barrier" protection effect on the circuit board. At the same time, in this solution, the receiving cavity is set on the flame-retardant protective component. Compared with setting the receiving cavity on the mounting panel, although the mounting panel can have a receiving cavity, its structure is more complex and its overall size is larger. Obviously, forming the receiving cavity on the simpler and smaller flame-retardant protective component is easier to process and lower in cost.

[0009] Preferably, as an improvement, a heat dissipation part is provided on the flame-retardant protective component and / or between the flame-retardant protective component and the mounting panel, and the outer side of the flame-retardant protective component is connected to the receiving cavity through the heat dissipation part.

[0010] Although the containment cavity provides better protection for the circuit board, the circuit board will still generate heat during actual use. For relatively simple medical or physiotherapy equipment, due to factors such as cost control or structural limitations, unlike household appliances such as computers, refrigerators, washing machines, and rice cookers, there are no separate heat dissipation components such as fans. Therefore, this solution sets a heat dissipation part that communicates with the containment cavity on the flame-retardant protective component, and / or sets a heat dissipation part that communicates with the containment cavity between the flame-retardant protective component and the mounting panel. The heat generated by the circuit board can be dissipated through the heat dissipation part, so that the circuit board can work stably and reduce the risk of high temperature.

[0011] Preferably, as an improvement, the flame-retardant protective component is provided with a lock hole and at least one plug-in part, and the mounting panel is provided with threaded holes that mate with the lock hole and mating parts in equal and one-to-one number to the number of plug-in parts.

[0012] In this application, when setting the specific connection structure between the flame-retardant protective component and the mounting panel, since the flame-retardant protective component only provides flame-retardant protection for the circuit board, the strength requirement for the connection between the flame-retardant protective component and the mounting panel is relatively low. Therefore, this application only provides a locking hole on the flame-retardant protective component and a corresponding threaded hole on the mounting panel. During fixing, a screw, as in the prior art, is passed through the locking hole and then fixed to the threaded hole, thus fixing the flame-retardant protective component to the inside of the mounting panel. At the same time, at least one plug-in part is provided on the flame-retardant protective component, and a mating part is provided on the mounting panel in an equal number and one-to-one correspondence with the plug-in part. When the flame-retardant protective component is fixed to the inside of the mounting panel with a screw, the plug-in part is in the state of being plugged into the mating part. At this time, the flame-retardant protective component is simultaneously limited by the screw and the plug-in part, which can effectively prevent the flame-retardant protective component from rotating relative to the mounting panel after installation, so that the flame-retardant protective component and the mounting panel form a more stable protection for the circuit board, and the protection effect is better. In addition, when the circuit board malfunctions and needs repair or replacement, the flame-retardant protective components can be quickly disassembled and installed simply by loosening the screws at the keyhole, making the repair and replacement of the circuit board more efficient.

[0013] Preferably, as an improvement, the mounting panel is provided with locking posts and support posts, threaded holes are provided on the locking posts, the number of support posts is equal to the number of plug-in parts and they are provided one-to-one, the mating part includes a plug-in hole provided on the support post at the end away from the mounting panel, and the plug-in part includes a plug-in post connected to the flame-retardant protective component.

[0014] By setting locking posts and support posts on the mounting panel, threaded holes can be conveniently placed inside the locking posts, and insertion holes can be placed on the support posts for mating with the insertion posts on the flame-retardant protective components. This avoids directly placing the threaded holes and insertion holes on the mounting panel, allowing the mounting panel to maintain a smaller and more uniform thickness, which facilitates the manufacturing and shaping of the mounting panel. In addition, by setting the locking posts and support posts on the mounting panel, when the flame-retardant protective components are connected to the locking posts and support posts, a certain gap is automatically formed between the flame-retardant protective components and the inner wall of the mounting panel under the support of the support posts and locking posts. When the circuit board is installed on the locking posts and support posts, a certain distance is automatically maintained between the circuit board and the mounting panel, preventing the components on the circuit board from contacting the mounting panel and affecting the normal operation of the circuit board.

[0015] Preferably, as an improvement, the flame-retardant protective component is fixedly connected with a number of stop posts that are equal to and correspond one-to-one with the number of plug posts. The diameter of the stop posts is greater than or equal to the outer diameter of the locking post and the outer diameter of the support post. The plug posts are fixedly connected to the end of the stop posts away from the flame-retardant protective component.

[0016] In this solution, a stop post is set on the flame-retardant protective component. The diameter of the stop post is greater than or equal to the outer diameter of the locking post, and the outer diameter of the stop post is greater than or equal to the outer diameter of the support post. When the flame-retardant protective component is connected to the mounting panel, the support post and the locking post respectively contact the corresponding stop post. The stop post structure has high strength, which can make the flame-retardant protective component and the mounting panel stably connected. Moreover, after setting the stop post structure, it is easier to form the plug-in post structure, making the processing more convenient.

[0017] Preferably, as an improvement, the end of the stop post away from the flame-retardant protective component is provided with an annular slot, and the locking post and the support post are inserted into the annular slot, wherein the depth of the annular slot is greater than or equal to 0.6 mm.

[0018] When the flame-retardant protective component is connected to the mounting panel, the support column and locking column contact their corresponding stop columns, and the screws are tightened into the locking holes on the flame-retardant protective component. The insertion column is then inserted into the insertion hole, ensuring stable fixation of the flame-retardant protective component. In this design, by setting an annular slot structure with a depth of at least 0.6mm, the locking column and support column engage with the annular slot. When the insertion column is inserted into the insertion hole, it ensures that the support column with the insertion hole can be stably inserted into the corresponding annular slot, and the locking column can also be stably inserted into the corresponding annular slot, making the connection and fixation of the flame-retardant protective component more secure.

[0019] Preferably, as an improvement, the flame-retardant protective component includes a flame-retardant protective shell with a thickness of 1.5 mm or more; the stop post is integrally formed on the flame-retardant protective shell, and the plug post is integrally formed on the stop post; the locking post and the support post are both integrally formed on the mounting panel, and the locking post and the support post are arranged along the outer contour line of the flame-retardant protective shell.

[0020] In this design, the thickness of the flame-retardant protective shell is set to be greater than or equal to 1.5mm to ensure sufficient strength and stable flame-retardant effect. Furthermore, the retaining posts, insertion posts, locking posts, and support posts are all integrally molded onto their respective parts, making processing easier and increasing connection strength. Simultaneously, this design arranges the locking posts and support posts along the outer contour of the flame-retardant protective component. This avoids the locking posts and support posts passing through the receiving cavity and obstructing the installation and fixation of the circuit board. Additionally, the locking posts and support posts, located on the outside of the circuit board, provide some auxiliary protection.

[0021] A physiotherapy device includes the aforementioned flame-retardant protection structure for a circuit board.

[0022] In this solution, by setting a flame-retardant protection structure for the circuit board in the physiotherapy device, a better safety protection effect can be achieved for the circuit board and other electrical components in the physiotherapy device, including but not limited to specific electromagnetic wave therapy devices, infrared physiotherapy instruments, etc.

[0023] A medical device comprising either the aforementioned flame-retardant protection structure for a circuit board or the aforementioned physiotherapy device.

[0024] In this solution, a flame-retardant protection structure for circuit boards or a physiotherapy device is incorporated into the medical equipment, resulting in enhanced safety. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of Embodiment 1 of the present utility model.

[0026] Figure 2 For this Figure 1 Exploded view.

[0027] Figure 3 for Figure 1 Sectional view along the middle AA.

[0028] Figure 4 This is a schematic diagram of the flame-retardant protective shell in Embodiment 1 of this utility model.

[0029] Figure 5 This is a schematic diagram of Embodiment 2 of the present invention.

[0030] Figure 6This is a schematic diagram of the flame-retardant protective shell in Embodiment 3 of this utility model. Detailed Implementation

[0031] The following detailed description illustrates the specific implementation method:

[0032] The reference numerals in the accompanying drawings include: mounting panel 1, flame-retardant protective shell 2, 201, heat dissipation gap 201, receiving cavity 3, locking post 4, threaded hole 401, support post 5, insertion hole 501, stop post 6, lock hole 601, annular slot 602, and insertion post 7. Example

[0033] This embodiment is as shown in the attached figure. Figure 1 As shown: A flame-retardant protection structure for a circuit board includes a mounting panel 1. A flame-retardant protective component is connected to the inner side of the mounting panel 1. In this embodiment, the flame-retardant protective component is a shell-shaped flame-retardant protective shell 2. The thickness of the flame-retardant protective shell 2 is greater than or equal to 1.5 mm, preferably 1.5 mm. Both the mounting panel 1 and the flame-retardant protective shell 2 are made of flame-retardant materials such as flame-retardant plastics. Figure 3 The flame-retardant protective shell 2 and the inner wall of the mounting panel 1 form a mounting gap for installing and isolating the circuit board in the prior art. During use, the circuit board is installed in the mounting gap. By setting the structure of the mounting panel 1 and the flame-retardant protective shell 2, the circuit board can be protected. At the same time, in the event of a fire caused by the high temperature of the circuit board, the mounting panel 1 and the flame-retardant protective shell 2 can effectively reduce the high temperature and protect other electrical components in the mounting panel 1.

[0034] Combination Figure 1 and Figure 3To enhance the isolation and protection of the circuit board, in this embodiment, a receiving cavity 3 is provided on the side of the flame-retardant protective shell 2 facing the mounting panel 1. The receiving cavity 3 forms the aforementioned mounting gap, so that the circuit board is located inside the receiving cavity 3 after installation. In order to facilitate heat dissipation of the circuit board, a heat dissipation part is provided on the flame-retardant protective shell 2 and / or between the flame-retardant protective component and the mounting panel 1. The outer side of the flame-retardant protective component is connected to the receiving cavity 3 through the heat dissipation part. Specifically, in this embodiment, the heat dissipation part is a heat dissipation gap 201 provided between the flame-retardant protective shell 2 and the mounting panel 1. The heat generated during the use of the circuit board can be diffused to the outside of the receiving cavity 3 through the heat dissipation gap 201, reducing the risk of high temperature fire of the circuit board. Of course, in other embodiments besides this one, the cavity 3 can be formed by fixing the baffle structure to the flame-retardant protective shell 2 with screws, adhesives, or other methods. All of these methods can isolate and protect the circuit board. In addition, for the heat dissipation part, the flame-retardant protective shell 2 can be attached to the mounting panel 1 to "seal" the circuit board (necessary wiring holes are left on the flame-retardant protective shell 2). Alternatively, heat dissipation holes or other structures can be directly opened on the flame-retardant protective shell 2, which can also achieve the heat dissipation effect. Or, a heat dissipation gap 201 can be set between the flame-retardant protective shell 2 and the mounting panel 1 at one side wall, two opposite side walls, or two adjacent side walls. These will not be described in detail here.

[0035] Combination Figure 1 and Figure 2 In this embodiment, a connection structure is provided between the mounting panel 1 and the flame-retardant protective shell 2, allowing the flame-retardant protective shell 2 to be easily and stably installed and removed from the mounting panel 1. The flame-retardant protective shell 2 has a locking hole 601 and at least one insertion part. The mounting panel 1 has threaded holes 401 that mate with the locking hole 601. The mounting panel 1 also has mating parts in equal numbers to the insertion parts, arranged in a one-to-one correspondence. Furthermore, to facilitate the formation of an installation gap between the flame-retardant protective shell 2 and the mounting panel 1, a connection is provided on the inner wall of the mounting panel 1. The body is formed with locking posts 4 and support posts 5. The locking posts 4 and support posts 5 are connected between the mounting panel 1 and the flame-retardant protective shell 2. The locking posts 4 and the locking holes 601 are directly opposite each other. The number of support posts 5 is equal to the number of plug-in parts and they are set one by one. The threaded hole 401 is set at the end of the locking post 4 away from the mounting panel 1. The mating part is set on the support post 5. At the same time, in order to avoid the impact of the locking posts 4 and support posts 5 on the installation of the circuit board, the locking posts 4 and support posts 5 are arranged along the outer contour line of the flame-retardant protective shell 2.

[0036] Combination Figure 1 , Figure 2 and Figure 4This embodiment shows a case where there are three insertion parts. Therefore, the mounting panel 1 is provided with the aforementioned locking post 4 and three support posts 5. Simultaneously, three four-post stoppers 6 are integrally formed on the flame-retardant protective shell 2. One stopper 6 is directly opposite the locking post 4, and the other three stoppers 6 are directly opposite the three support posts 5 respectively. The outer diameter of each of the four stoppers 6 is greater than or equal to the outer diameter of the locking post 4 and the outer diameter of the support posts 5. When the flame-retardant protective shell 2 is installed on the mounting panel 1, the locking post 4 and the support posts 5 respectively contact the corresponding stoppers 6. The aforementioned locking hole 601 is provided through the stopper 6 directly opposite the locking post 4. The insertion part is an insertion post 7 integrally formed on the stopper, and the mating part is an insertion hole 501 provided at the end of the support post 5 away from the mounting panel 1. The insertion post 7 and the insertion hole 501 are inserted and mated.

[0037] In practical use, when the flame-retardant protective shell 2 needs to be installed, simply place the flame-retardant protective shell 2 inside the mounting panel 1, insert the plug pin 7 into the plug hole 501, and align the locking hole 601 with the threaded hole 401. At this time, the locking pin 4 and the support pin 5 are in contact with the corresponding stop pin 6. Then, pass the screw from the prior art through the locking hole 601 and tighten it with the threaded hole 401 to fix it. The flame-retardant protective shell 2 can then be connected to the mounting panel 1, and the circuit board is located in the receiving cavity 201. The mounting panel 1 and the flame-retardant protective shell 2 provide isolation and protection for both sides of the circuit board. The sidewall of the receiving cavity 201 can provide isolation and protection for the sides and all sides of the circuit board. When the circuit board catches fire due to high temperature, it reduces the risk of the fire spreading to the surrounding space and provides good protection. In addition, the setting of the heat dissipation gap 201 can effectively dissipate heat from the circuit board without the need for heat sinks such as fans in the prior art, further reducing the risk of the circuit board catching fire due to high temperature. In addition, in this embodiment, only one screw is used to fix the flame-retardant protective shell 2. The plug-in post 7 and the plug-in hole 501 are used to fix the flame-retardant protective shell 2 to the position of the mounting panel 1 after connection. This ensures that the flame-retardant protective shell 2 and the mounting panel 1 stably form an installation gap 3, which can stably protect the circuit board. The structure is simple, easy to disassemble and assemble, and has obvious flame-retardant effect.

[0038] A physiotherapy device includes the aforementioned flame-retardant protection structure for a circuit board; a medical device includes the aforementioned flame-retardant protection structure for a circuit board or the aforementioned medical device. By incorporating the flame-retardant protection structure for a circuit board in the physiotherapy device and the medical device, the flame-retardant and fire-resistant standards are well met. Example

[0039] The difference between Example 2 and Example 1 is that in Example 1, the number of insertion pins 7 is three, such as... Figure 5As shown in this embodiment, when the area of ​​the circuit board to be protected is small, only one plug post 7 and one lock hole 601 are needed to conveniently and stably install the flame-retardant protective shell 2, which will not be described in detail here. Example

[0040] The difference between Example 3 and Example 2 is as follows: Figure 6 As shown, in this embodiment, there is an annular slot 602 at the end of the retaining post 6 away from the flame-retardant protective shell 2. The annular slot 602 is recessed into the retaining post 6, and the depth of the annular slot 602 is greater than or equal to 0.6 mm, preferably 1 mm. When the flame-retardant protective shell 2 is connected to the mounting panel 1, the support post 5 and the locking post 4 not only contact the retaining post 6, but also insert the support post 5 and the locking post 4 into the annular slot 602 provided on the corresponding retaining post 6. The annular slot 602 is used to further limit the support post 5 and the locking post 4, so that the flame-retardant protective shell 2 can be more firmly connected to the mounting panel 1 and provide more stable protection for the circuit board.

[0041] The above descriptions are merely embodiments of this utility model. Commonly known technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A flame-retardant protection structure for a circuit board, comprising a mounting panel, characterized in that: A flame-retardant protective component is connected to the inner side of the mounting panel, and an installation gap is provided between the flame-retardant protective component and the mounting panel for installing and isolating the circuit board; a heat dissipation part is provided on the flame-retardant protective component and / or between the flame-retardant protective component and the mounting panel, and the outer side of the flame-retardant protective component is connected to the installation gap through the heat dissipation part.

2. The circuit board flame-retardant protection structure according to claim 1, characterized in that: The flame-retardant protective component has a receiving cavity on the side facing the mounting panel, and the circuit board is located in the receiving cavity.

3. The circuit board flame-retardant protection structure according to claim 1, characterized in that: The flame-retardant protective component is provided with a lock hole and at least one plug-in part. The mounting panel is provided with threaded holes that mate with the lock hole and mating parts that are equal in number and correspond one-to-one with the number of plug-in parts.

4. The circuit board flame-retardant protection structure according to claim 3, characterized in that: The mounting panel is provided with locking posts and support posts. Threaded holes are provided on the locking posts. The number of support posts is equal to the number of plug-in parts and they are provided one-to-one. The mating part includes a plug-in hole provided on the support post at the end away from the mounting panel. The plug-in part includes a plug-in post connected to the flame-retardant protective component.

5. The circuit board flame-retardant protection structure according to claim 4, characterized in that: The flame-retardant protective component is fixedly connected with a number of stop posts that are equal to and correspond one-to-one with the number of plug-in posts. The diameter of the stop post is greater than or equal to the outer diameter of the locking post and the outer diameter of the support post. The plug-in post is fixedly connected to the end of the stop post away from the flame-retardant protective component.

6. The circuit board flame-retardant protection structure according to claim 5, characterized in that: The end of the stop post away from the flame-retardant protective component is provided with an annular slot. The locking post and the support post are inserted into the annular slot, and the depth of the annular slot is greater than or equal to 0.6 mm.

7. The circuit board flame-retardant protection structure according to claim 5, characterized in that: The flame-retardant protective component includes a flame-retardant protective shell with a thickness of 1.5 mm or more; the stop post is integrally formed on the flame-retardant protective shell, and the plug post is integrally formed on the stop post; the locking post and the support post are integrally formed on the mounting panel, and the locking post and the support post are arranged along the outer contour line of the flame-retardant protective shell.

8. A physiotherapy device, characterized in that: Including a flame-retardant protection structure for circuit boards as described in any one of claims 1-7.

9. A medical device, characterized in that: This includes a circuit board flame-retardant protection structure as described in any one of claims 1-7 or a physiotherapy device as described in claim 8.

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