Heat dissipation device, optical switching device and test device for pluggable module

Abstract

This invention proposes a heat dissipation device, an optical switching device, and a testing apparatus for a pluggable module. The heat dissipation device is used to dissipate heat from a pluggable module inserted into a housing. The heat dissipation device includes a heat transfer element and a driving element. During the insertion and removal of the pluggable module from the housing, because the contact surface of the heat transfer element does not reach the position where it comes into contact with the pluggable module, the pluggable module is less likely to generate relative friction with the heat transfer element during insertion, installation, and removal, thereby avoiding mutual scratches and wear between the contact surface and the pluggable module. At the same time, after the pluggable module is installed in place, the driving element can cause the heat transfer element to be pressed down, so that the contact surface can come into contact with the pluggable module to achieve good heat dissipation.

Description

Technical Field

[0001] This invention relates to the field of optical communication technology, specifically to a heat dissipation device, an optical switching device, and a testing device for pluggable modules. Background Technology

[0002] It is understood that the description in this section provides only background information relevant to the disclosure of this application and does not constitute prior art.

[0003] When communication equipment transmits data, the electronic components used to exchange data (such as optical modules) are prone to heat generation, and the heat is not easily dissipated. Therefore, heat sinks are required to dissipate heat.

[0004] Currently, optical switching equipment includes an optical cage with slots. The slots have cutouts for mounting heat sinks. The optical modules can be detachably fitted into the slots by plugging and unplugging. When the optical modules are inserted into the slots, the heat sinks are in contact with the optical modules to dissipate heat from them.

[0005] However, since the optical module needs to be plugged in and out during use and maintenance, friction will occur between the optical module and the heat sink during the plugging and unplugging process. This friction will cause scratches and other wear on the surfaces where the optical module and the heat sink are in contact, which will lead to damage to the optical module and the heat sink and affect the heat dissipation effect.

[0006] Meanwhile, to ensure the optical module's performance meets requirements, various performance tests are required before shipment. These tests involve inserting the optical module into an optical cage, and heat dissipation is also necessary during operation. Because of the contact-based heat dissipation method, scratches and other wear can easily occur on the contact surface between the optical module and the heat sink during insertion and removal, thus affecting heat dissipation. To avoid damaging the optical module, non-contact heat dissipation methods, such as jet cooling, are typically used during testing. However, compared to contact-based heat dissipation, non-contact heat dissipation consumes more cooling energy and is less effective at reducing energy consumption. Summary of the Invention

[0007] The purpose of this invention is to overcome the shortcomings of the prior art and provide a test device for a heat dissipation device, an optical switching device, and a pluggable module. The heat dissipation device can fully contact the inserted pluggable module for heat dissipation, while avoiding friction between the pluggable module and the contact surface of the heat dissipation device during the insertion and removal process.

[0008] To achieve the above objectives, a heat dissipation device is provided for dissipating heat from a pluggable module inserted into a housing. The housing has a cutout on the side facing the heat dissipation device. The heat dissipation device includes a heat transfer element and a driving element. The heat transfer element includes a heat-conducting part with a contact surface for contacting the pluggable module to be cooled. The driving element is disposed outside the housing. The driving element has a connecting part and an abutting part. The connecting part is connected to the heat transfer element. The abutting part is used to extend into the housing to abut against the pluggable module.

[0009] When the abutting part is not under force, the heat-conducting part of the heat transfer element is in a first position relative to the hollow part of the housing; when the abutting part is pushed by the pluggable module inserted into the housing, the driving member can drive the heat-conducting part of the heat transfer element to extend into the hollow part of the housing until the contact surface abuts the pluggable module in a second position.

[0010] Optionally, the driving component includes a first rotating arm, a pivoting part, and a second rotating arm, wherein the abutting part is located on the first rotating arm, the connecting part is located on the second rotating arm, and the pivoting part is pivotally connected to a fulcrum part.

[0011] Optionally, the heat dissipation device further includes a reset member connected to the drive member. The reset member is used to reset the drive member when the pluggable module leaves the abutment portion, so as to drive the heat-conducting portion away from the second position.

[0012] Optionally, the heat dissipation device further includes a support member fixed to one side of the housing, and the support member has a fulcrum portion for pivotally connecting the drive member.

[0013] Optionally, the carrier is provided with a first connecting part, the driving member is provided with a second connecting part, and the two ends of the reset member are respectively connected to the first connecting part and the second connecting part.

[0014] Optionally, the heat dissipation device further includes a guide, and the connecting portion is connected to the heat transfer element through the guide.

[0015] Optionally, the guide member and the heat transfer member are connected by an elastic member.

[0016] Optionally, the guide is a temperature-sensing probe with a retractable detection part; the heat transfer element has a through hole penetrating the contact surface, and the detection part is inserted into the through hole to detect the temperature of the pluggable module.

[0017] Optionally, the connecting portion is provided with a first guide structure, the guide member is provided with a second guide structure, and the driving member drives the guide member to move by cooperating with the first guide structure and the second guide structure.

[0018] Optionally, in the first guide structure and the second guide structure, one is a guide arm and the other is a guide groove.

[0019] Optionally, the heat transfer element further includes a heat dissipation section disposed on the side of the heat conduction section opposite to the contact surface, and the heat dissipation section has at least one limiting notch formed thereon.

[0020] The present invention also provides an optical switching device, including a housing and the aforementioned heat dissipation device. The housing has at least one receiving cavity and a cutout portion, the cutout portion being connected to the receiving cavity. The receiving cavity has an open front end for receiving an externally inserted pluggable module. The heat dissipation device is disposed on the outside of the housing, and the heat transfer element faces the cutout portion.

[0021] Optionally, the heat transfer component further includes a heat dissipation section, which is disposed on the side of the heat conduction section opposite to the contact surface, and the heat dissipation section is provided with at least one limiting notch; the optical switching device further includes a limiting component, which is provided with a limiting part corresponding to the limiting notch.

[0022] The present invention also provides a testing device for a pluggable module, comprising a housing and the aforementioned heat dissipation device, wherein the housing has at least one receiving cavity and a cutout portion, the cutout portion being connected to the receiving cavity, the receiving cavity having an open front end for receiving an externally inserted pluggable module; the heat dissipation device is disposed on the outside of the housing, and the heat transfer element faces the cutout portion.

[0023] Optionally, the testing device for the pluggable module further includes a limiting member, which has a limiting portion corresponding to the limiting notch of the heat transfer element.

[0024] The present invention has at least the following beneficial effects:

[0025] In the aforementioned heat dissipation device and optical switching equipment, the heat dissipation device prevents the pluggable module from generating relative friction with the heat transfer component during insertion, installation, and removal, thereby avoiding scratches and wear between the contact surface and the pluggable module. Simultaneously, it ensures that after the pluggable module is installed in place, the driving component can press down on the heat transfer component, allowing the contact surface to fully contact and adhere to the pluggable module, achieving a good heat dissipation effect.

[0026] Meanwhile, the heat dissipation device is located on the outside of the housing, so there is no need to change the existing structure of the housing. It is directly compatible with the existing housing, so the replacement cost is low, which is conducive to the upgrade and replacement of the switch and makes it easier to achieve large-scale application.

[0027] In the test apparatus for the pluggable module, due to the use of the heat dissipation device, the heat dissipation device and the pluggable module are less likely to rub against and be damaged during the plugging and unplugging process; furthermore, the pluggable module can use a contact heat dissipation scheme that contacts the heat dissipation device during testing without affecting the heat dissipation effect, and there is no need to use a non-contact heat dissipation scheme, such as jet cooling, which helps to reduce energy consumption. Attached Figure Description

[0028] Figure 1 An exploded view of the heat dissipation device and housing in the optical switching device of the present invention is shown as an example.

[0029] Figure 2 Show Figure 1 The main view.

[0030] Figure 3 An exemplary schematic diagram of the driving component in this invention is shown.

[0031] Figure 4 An exemplary schematic diagram of the guide component in this invention is shown.

[0032] Figure 5 A partial sectional view of the heat dissipation device in this invention is shown as an example.

[0033] Figure 6 An exemplary schematic diagram of the heat transfer element in this invention is shown.

[0034] Figure 7 An exemplary schematic diagram of the pluggable module in this invention is shown.

[0035] In the figure: 100. Heat dissipation device; 110. Heat transfer component; 111. Stepped hole; 112. Heat conduction part; 1121. Contact surface; 113. Heat dissipation part; 1131. First heat dissipation part; 1132. Second heat dissipation part; 114. Limiting notch; 115. Clearance part; 120. Guide component; 121. Ejector pin; 122. Connecting block; 123. Mating hole; 130. Driving component; 131. Pivoting part; 132. Connecting part; 133. Abutting part; 134. First rotating arm; 135. Second rotating arm; 136. Second connecting part; 140. Resetting component; 150. Bearing component; 151. First connecting part; 160. Fastener; 200. Housing; 210. Front end; 220. Hollowed-out part; 230. Limiting component; 231. Body; 232. Protruding section; 233. Connecting section; 310. Abutting end. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0037] See Figures 1 to 7 As shown, the present invention provides a heat dissipation device 100, disposed on a cage 200 of a switch, for dissipating heat from a pluggable module inserted into the cage 200. The cage 200 has at least one receiving cavity with an open front end 210. A perforated portion 220 is provided on the upper side of the receiving cavity, through which the pluggable module can be inserted into the receiving cavity and exposed to the perforated portion 220. The heat dissipation device 100 includes a heat transfer element 110 and a driving element 130. Here, the cage refers to a retainer for holding the pluggable module, and the cage has a locking portion that engages with the latch of the pluggable module to lock the pluggable module within the cage.

[0038] The heat transfer element 110 has a contact surface 1121 facing the hollow portion 220. The contact surface 1121 is used to fit against the pluggable module to be cooled to achieve heat transfer. The driving element 130 has a connecting portion 132 and an abutting portion 133. The connecting portion 132 is directly or indirectly connected to the heat transfer element 110 to drive the heat transfer element 110 to move; the abutting portion 133 is used to extend into the housing 200 to abut against the pluggable module to be cooled.

[0039] When the abutment portion 133 is not under force, the heat-conducting portion 112 of the heat transfer member 110 is in the first position. At this time, the heat-conducting portion 112 is in a position relative to the hollow portion 220 of the housing 200. When the abutment portion 133 is pushed by the pluggable module inserted into the housing 200, the driving member 130 can drive the heat-conducting portion 112 of the heat transfer member 110 to the second position. At this time, the heat-conducting portion 112 extends into the hollow portion 220 of the housing 200 and is located in a position where the contact surface 1121 is in contact with the pluggable module.

[0040] Specifically, the pluggable module is inserted into the housing 200 and abuts against the abutting part 133, and pushes the abutting part 133 to move, thereby driving the connecting part 132 to move, which in turn drives the heat transfer element 110 to move, and makes the contact surface 1121 pass through the hollow part 220 and fully fit with the pluggable module in the housing 200.

[0041] It is understood that when the pluggable module enters the receiving cavity of the housing 200 from the front end 210, the contact surface 1121 of the heat transfer element 110 is located in the first position (in a raised state), that is, it has not reached the position of contacting the pluggable module. Therefore, no relative friction will occur between the pluggable module and the contact surface 1121, avoiding scratches and wear between the pluggable module and the contact surface 1121. When the pluggable module is installed in the receiving cavity, the pluggable module abuts against the abutment part 133 and pushes the abutment part to cause the driving member 130 to move, and drive the contact surface 1121 of the heat conduction part 112 to move to the second position, so that the contact surface 1121 passes through the hollow part 220 and comes into contact with the pluggable module in the housing 200, thereby enabling the heat transfer element 110 to dissipate heat from the pluggable module. When the pluggable module is pulled out of the receiving cavity, as soon as the pluggable module leaves the abutment portion, it is still inside the housing. The driving member 130 can move under the action of the reset member 140 (or, in other embodiments, under the action of other external forces) to move the heat transfer member 110 away from its contact position with the pluggable module. That is, when the pluggable module is pulled out, the heat transfer member 110 will first lift under the action of the reset member 140, causing the contact surface 1121 to leave the pluggable module. Therefore, during the pulling process, there will be no relative friction between the pluggable module and the contact surface 1121, avoiding scratches and wear between the heat transfer member contact surface 1121 and the pluggable module.

[0042] As can be seen from the above, the heat dissipation device 100 ensures that the pluggable module will not rub against the heat transfer element 110 during insertion, installation, and removal, thereby preventing scratches and wear between the contact surface 1121 and the pluggable module. At the same time, it also ensures that after the pluggable module is installed in place, the contact surface 1121 can fully fit with the pluggable module to achieve a good heat dissipation effect.

[0043] Meanwhile, the heat dissipation device 100 is located on the outside of the housing 200, without requiring any changes to the existing structure of the housing 200. This means it is directly compatible with the existing housing 200, resulting in low replacement costs, which is beneficial for the upgrade and replacement of the switch and makes it easier to achieve large-scale application.

[0044] The heat dissipation device 100 provided by the present invention will be further described in detail below with reference to the accompanying drawings.

[0045] In some embodiments, the drive member 130 is a rotating member, and the drive member 130 is pivotally connected to the housing 200 via a pivot portion 131. The pivot connection includes direct pivot connection and indirect pivot connection, as long as the drive member 130 can rotate relative to the housing 200. It is understood that in other embodiments, the drive member 130 may not be a rotating member. For example, the abutment portion 133 of the drive member 130 has a mating inclined surface that cooperates with the pluggable module. When the pluggable module abuts against the abutment portion, it can drive the drive member 130 to perform linear motion to drive the heat transfer member 110 to the second position.

[0046] In some implementations, the drive member 130 includes a first rotating arm 134, a pivot portion 131, and a second rotating arm 135, wherein the abutment portion 133 is located on the first rotating arm 134, the connecting portion 132 is located on the second rotating arm 135, and the drive member 130 is pivotally connected to a fulcrum portion via the pivot portion 131. Exemplarily, the fulcrum portion may be disposed on the housing 200, or it may be disposed on a support member 150 located outside the housing 200; this embodiment does not limit the specific arrangements.

[0047] In some examples, the first rotating arm 134 and the second rotating arm 135 are connected to each other at their adjacent ends, the abutment portion 133 is disposed on the first rotating arm 134, the connecting portion 132 is disposed on the second rotating arm 135, and the pivot portion 131 is disposed at the connection between the first rotating arm 134 and the second rotating arm 135.

[0048] The pivot portion 131 is located at the point where it is pivotally connected to the housing 200. Exemplarily, the pivot portion 131 can be a structure such as a connecting hole for connecting a pivot to achieve pivoting. It is understood that in other embodiments, the pivot portion 131 can also be other structures capable of rotational connection, such as a hinged structure.

[0049] Specifically, in this embodiment, please refer to... Figures 1 to 3As shown, the drive member 130 is L-shaped and includes a first rotating arm 134 and a second rotating arm 135 connected vertically at their proximal ends. The first rotating arm 134 has a connecting hole at its end near the second rotating arm 135, serving as a pivot portion 131. This connecting hole is pivotally connected to the housing 200 via a pivot, wherein the pivot is rotatably connected to either the first rotating arm 134 or the housing 200 and is fixed relative to the other. The free end of the first rotating arm 134 has an extension extending into the housing, serving as an abutment portion 133. This extension can extend into the housing 200 through the cutout portion 220. The second rotating arm 135 has a connecting portion 132 at its end away from the first rotating arm 134, for direct or indirect connection to the heat transfer member 110.

[0050] In some examples, the heat dissipation device 100 further includes a support member 150, which is fixed relative to the housing 200 and has the fulcrum portion. The drive member 130 is pivotally connected to the fulcrum portion of the support member 150 at the pivot portion 131, thereby indirectly pivotally connected to the housing 200.

[0051] Specifically, see Figures 1 to 3 As shown, in this embodiment, the heat dissipation device 100 includes a support frame serving as a support member 150. The support frame is fixed relative to the housing 200, for example, by welding, bolting, or snap-fitting. The drive member 130 is pivotally connected to the fulcrum portion of the support member 150 at the pivot portion 131 via a pivot, wherein the pivot is rotatably connected to either the drive member 130 or the support member 150 and fixed to the other.

[0052] Before the pluggable module is inserted into the housing 200, the heat transfer element 110 is in a raised state, that is, the heat transfer element 110 is in a first position relative to the cutout portion 220 of the housing 200. When the pluggable module is inserted at this time, the contact surface of the heat transfer element 110 does not contact the pluggable module, and no friction is generated between the two, which can avoid problems such as scratches or wear. The abutment portion 133 of the drive element 130 can extend into the receiving cavity of the housing 200 and reach the end of the receiving cavity that is relatively far away from its open front end 210. When the pluggable module is inserted into the housing 200 and is nearing its installed position, the front end of the pluggable module relative to the insertion direction abuts against the abutment portion 133 of the drive member 130, and applies force to the abutment portion 133 during the continued movement, thereby pushing the drive member 130 to rotate around the pivot portion 131, so that the connecting portion 132 can rotate around the pivot portion 131, and driving the heat-conducting portion 112 to be pressed down to the second position, so that the contact surface 1121 of the heat-conducting portion 112 is in full contact with the main heat dissipation surface of the pluggable module, thereby ensuring a good heat dissipation effect.

[0053] As can be seen from the above, the driving component 130 can drive the heat-conducting part 112 of the heat transfer component 110 to the second position under the abutment of the pluggable module, so that the pluggable module is not easy to generate relative friction with the heat transfer component 110 when it is inserted and installed, thereby avoiding mutual scratches and wear between the contact surface 1121 and the pluggable module; at the same time, it can also ensure that after the pluggable module is installed in place, the contact surface 1121 can fully fit with the pluggable module to achieve a good heat dissipation effect.

[0054] The heat transfer element 110 is directly or indirectly connected to the driving element 130 so that when either the heat transfer element 110 or the driving element 130 moves, the other can also move along with it.

[0055] In some embodiments, the heat transfer element 110 is directly connected to the drive element 130; in other embodiments, the heat transfer element 110 is indirectly connected to the drive element 130, for example, through a guide element 120. Various direct or indirect connection methods are possible.

[0056] In some implementations, the heat dissipation device 100 further includes a guide 120, and the connecting portion 132 is connected to the heat transfer element 110 through the guide 120.

[0057] Furthermore, the connecting portion 132 is provided with a first guide structure, the guide member 120 is provided with a second guide structure, and the driving member 130 drives the guide member 120 to move by cooperating with the first guide structure and the second guide structure.

[0058] In some examples, in the first guide structure and the second guide structure, one is a guide arm and the other is a guide groove. Exemplarily, the guide member 120 is connected to the heat transfer member 110, and the guide member 120 has a guide arm, the connecting portion 132 has a guide groove, and the guide arm movably engages with the guide groove. Through the engagement of the guide arm and the guide groove, when the driving member 130 rotates, the guide member 120 can generate a displacement perpendicular to the hollow portion 220 along the guide groove. The guide member 120 can have various shapes; for example, in one example, the guide member 120 is a cylindrical pin; in another example, the guide member 120 is an inverted U-shaped rod, with the two ends of the U-shape connected to the heat transfer member 110; in other examples, the guide member 120 can also have other shapes, which are not limited in this embodiment.

[0059] Specifically, please refer to Figures 1 to 3 As shown, in this embodiment, the second rotating arm 135 of the driving member 130 is provided with a guide groove at the connecting portion 132, which is farther from the pivot portion 131. The guide member 120 has a guide arm, which is movably engaged with the guide groove. An opening is provided on one side of the guide groove for assembling the guide arm. A bend is provided on the side of the guide groove near the opening to prevent the guide arm from falling off. The guide arm can slide along the guide groove, and the guide arm is relatively fixed to the guide member 120, thereby allowing the guide member 120 to movably engage with the guide groove. It is understood that in some examples, the movable engagement between the guide arm and the guide groove is a sliding engagement; in other examples, to make the movement of the guide member 120 along the guide groove smoother and with less resistance, the sliding friction between the guide member 120 and the guide arm can be changed to rolling friction. For example, the guide arm is a cylinder that can roll along the guide groove and is rotatably connected to the guide member 120.

[0060] It is understood that in other examples, the guide member 120 may have a guide groove, and the connecting portion 132 may have a guide arm, the guide arm being movably engaged with the guide groove. It is known that the engagement of the guide groove with the guide member 120 provides guidance for the movement of the heat transfer member 110, allowing the heat transfer member 110 to move more accurately to the second position where it engages with the pluggable module. Specifically in... Figure 2When the drive member 130 rotates counterclockwise, the guide groove rotates counterclockwise around the pivot part 131. Due to the gravity of the guide member 120, the gravity of the heat transfer member 110 connected to the guide member 120, and the downward pressure exerted on the guide member 120 by the guide groove of the connecting part 132, the guide member 120 can slide along the guide groove and move vertically downward at the same time, so that the contact surface 1121 of the heat transfer member 110 can pass through the hollow part 220 and fit with the pluggable module in the housing 200. When the drive member 130 rotates clockwise, the drive member 130 can drive the guide member 120 and the heat transfer member 110 to move vertically upward through the guide groove, so that the contact surface 1121 moves outward away from the hollow part 220 and disengages from the pluggable module in the housing 200.

[0061] In some implementations, the guide member 120 of the heat dissipation device 100 is fixedly connected to the drive member 130 at the connection portion 132. Thus, the rotation of the drive member 130 can drive the guide member 120 and the heat transfer member 110 connected to the guide member 120 to move, allowing the contact surface 1121 to pass through the cutout portion 220 and either engage with or move away from the cutout portion 220. Alternatively, in some implementations, the guide member can be omitted, and the connection portion of the drive member is directly connected to the heat transfer member. When the drive member rotates, its connection portion directly drives the heat transfer member to press down or lift.

[0062] In some implementations, the connection between the heat transfer element 110 and the guide element 120 or the drive element 130 is a fixed connection. For example, the heat transfer element 110 is fixedly connected to the guide element 120 or the drive element 130. For instance, the bottom end of the guide element 120 is welded to the heat transfer element 110; or, the bottom end of the guide element 120 is detachably fixed to the heat transfer element 110, for example, by a bolt structure or a snap-fit ​​structure.

[0063] Specifically, in this embodiment, see Figure 4 As shown, the guide member 120 includes a ejector pin 121 and a connecting block 122. The connecting block 122 is fixed to the ejector pin 121, and the connecting block 122 is provided with an opening for mounting a guide arm (not shown in the figure), thereby enabling it to be movably connected to the connecting part 132. Figure 5As shown, the bottom of the guide member 120 is provided with a mating hole 123, and the heat transfer member 110 is provided with a stepped hole 111. A fastener 160 passes through the stepped hole 111 and engages with the mating hole 123 of the guide member 120 to fix the guide member 120 and the heat transfer member 110. Thus, when either the guide member 120 or the heat transfer member 110 moves, it can drive the other to move synchronously. In this embodiment, the fastener 160 is a bolt, which passes through the stepped hole 111 and engages with the mating hole 123 of the guide member 120 by thread. In some embodiments, when installing the pluggable module, the surface of the pluggable module that is used to contact the heat transfer member 110 may be tilted due to operation or tolerance reasons. Therefore, to compensate for the error caused by this tilt, the guide member 120 is connected to the heat transfer member 110 or the drive member 130 by an elastic element (not shown in the figure). When the heat transfer element 110 is placed against the pluggable module, due to the elastic element between the guide 120 and the heat transfer element 110 or the drive element 130, the heat transfer element 110 can tilt relative to the guide 120 to better fit against the guide 120. That is, the ejector pin abuts against the heat transfer element 110 through a buffer to absorb assembly tolerances between the heat transfer element 110 and the heat-conducting part 112, ensuring that the contact surface of the heat transfer element 110 can fully contact the pluggable module, while preventing the heat transfer element 100 from applying excessive pressure to the pluggable module and damaging it. The buffer can be an elastic element such as a spring, rubber, or silicone.

[0064] Specifically, in some implementations, the guide member 120 and the heat transfer member 110 are connected by a cylindrical spring acting as an elastic element, with one end of the cylindrical spring fixed to the guide member 120 and the other end fixed to the heat transfer member 110. In other implementations, see [link to implementation details]. Figure 6 As shown, the bottom of the guide member 120 is provided with a mating hole 123, and the heat transfer member 110 is provided with a stepped hole 111. A fastener 160 passes through the stepped hole 111 and is threadedly engaged with the mating hole 123 of the guide member 120 to fix the guide member 120 and the heat transfer member 110. Furthermore, a cylindrical spring (not shown in the figure) serving as the elastic element is held between the stepped surface of the stepped hole 111 and the bolt.

[0065] In some embodiments, the guide 120 may be a temperature-sensing probe with an elastically extendable detection portion; the heat transfer element 110 has a through-hole extending through its contact surface, and the detection portion passes through the through-hole to detect the temperature of the pluggable module. Specifically, please refer to... Figure 5As shown, the fastener 160 can be considered as an elastically extendable probe of the temperature probe. The connection between the temperature probe and the heat transfer element 110 is the same as the connection between the ejector pin and the heat transfer element 100. The probe and the ejector pin are elastically extendable to absorb the assembly tolerance between the guide 120 and the pluggable module. When the guide 120 pushes the heat transfer element down, the probe can fully contact the heat dissipation surface of the pluggable module, while avoiding excessive collision between the probe and the pluggable module, which could damage the probe or the pluggable module.

[0066] The heat transfer element 110 is used to dissipate heat from the pluggable module installed in the housing 200, thereby reducing the temperature of the pluggable module and the optical switching device. The heat transfer element 110 includes a heat-conducting portion 112 and a heat-dissipating portion 113. The heat-conducting portion 112 has a contact surface 1121 on the side opposite to the pluggable module, and the contact surface 1121 can pass through the cutout portion 220 to fit against the pluggable module. The heat-dissipating portion 113 is used to dissipate the heat from the heat-conducting portion 112 outwards. In some embodiments, the heat-dissipating portion 113 includes heat dissipation fins and / or liquid-cooled heat pipes.

[0067] Specifically, in this embodiment, see Figure 6 As shown, the heat transfer component 110 includes a heat transfer substrate, and the heat transfer substrate protrudes in a direction close to the pluggable module to form the contact surface 1121. The heat transfer substrate and the contact surface 1121 are the heat conduction part 112. The heat conduction part 112 is provided with a plurality of spaced heat dissipation fins on the side opposite to the pluggable module. The plurality of spaced heat dissipation fins are the heat dissipation part 113.

[0068] In some embodiments, at least one limiting notch 114 is formed on the heat dissipation portion 113. The limiting notch 114 is used to cooperate with the limiting member 230 to limit the movement of the heat transfer member 110. The limiting member 230 is fixed relative to the housing 200.

[0069] Specifically, in this embodiment, please refer to... Figure 1 , Figure 2 and Figure 6 As shown, the heat dissipation part 113 includes a first heat dissipation part 1131 and a second heat dissipation part 1132 arranged sequentially along the insertion direction of the pluggable module. A limiting notch 114 is formed between the first heat dissipation part 1131 and the second heat dissipation part 1132. Another limiting notch 114 is formed on the rear side of the second heat dissipation part 1132, which is farther from the first heat dissipation part 1131. The two limiting notches 114 are respectively used to cooperate with the limiting member 230 to limit the movement of the heat transfer member 110.

[0070] In some embodiments, in order to prevent the drive member 130 from colliding with the heat transfer member 110 during movement, the heat transfer member 110 is provided with a clearance portion 115 at one end near the drive member 130.

[0071] Specifically, see Figure 6 As shown, the heat transfer element 110 has a clearance groove at one end near the drive element 130 as a clearance part 115. The drive element 130 can pass through the clearance part 115 during rotation so that the drive element 130 and the heat transfer element 110 will not interfere with or collide with each other.

[0072] In some embodiments, in order to enable the drive member 130, the guide member 120 and the heat transfer member 110 to automatically return to the state in which the heat transfer member 110 moves outward away from the cutout portion 220 without requiring manual reset rotation before the pluggable module is pulled out, the heat dissipation device 100 further includes a reset member 140. The reset member is connected to the drive member 130. The reset member 140 is used to reset the drive member 130 when the pluggable module moves away from the abutment portion 133, so as to drive the heat transfer member 110 and the contact surface 1121 away from the second position.

[0073] When the pluggable module is not installed in the housing 200, the reset member 140 is in a released state; when the pluggable module is installed in the housing 200, the reset member 140 is in a stored state. Thus, the reset member 140 can provide a force to reset the drive member 130 and the heat transfer member 110, ensuring that when the pluggable module is not installed, the contact surface 1121 of the heat transfer member 110 can move away from its position of contact with the pluggable module.

[0074] In some implementations, the two ends of the reset member 140 are fixed relative to the drive member 130 and the housing 200, respectively; in other implementations, the two ends of the reset member 140 are fixed relative to the guide member 120 and the housing 200, respectively; and in still other implementations, the two ends of the reset member 140 are fixed relative to the heat transfer member 110 and the housing 200, respectively.

[0075] Specifically, please refer to Figures 1 to 3As shown, the heat dissipation device 100 includes a support member 150, which is fixed to the housing 200, for example, by welding, bolting, or snap-fitting. A first connecting portion 151 is provided on the support member 150, and a second connecting portion 136 is provided on the drive member 130. The opposite sides of the first connecting portion 151 and the second connecting portion 136 are respectively provided with mating grooves for connecting the two ends of a tension spring, which is the reset member 140. Thus, one end of the tension spring is relatively fixed to the drive member 130, and the other end of the tension spring is relatively fixed to the housing 200. When the pluggable module is installed in the housing 200, the tension spring is in a stretched deformation state; when the pluggable module leaves its installed position, the tension spring tends to return to its initial state without deformation, thereby driving the drive member 130, the guide member 120, and the heat transfer member 110 to reset.

[0076] See Figures 1 to 7 As shown, the present invention also provides an optical switching device, which can be a router, a switch, etc. The optical switching device includes a housing 200 and the aforementioned heat dissipation device 100.

[0077] The housing 200 has at least one receiving cavity and a cutout portion 220. The receiving cavity has an open front end 210 and an opposite rear end. The front end 210 is used to receive a pluggable module, and the rear end is provided with a structure for electrical connection with the pluggable module, such as a printed circuit board with an electrical interface. The cutout portion 220 is correspondingly disposed on the upper side of the receiving cavity and communicates with the receiving cavity. The housing 200 specifically refers to an optical cage.

[0078] The heat dissipation device 100 is disposed on the outside of the housing 200, the driving member 130 is pivotally connected to the outside of the housing 200 through the pivot part 131, and the heat transfer member 110 is disposed on the outside of the hollow part 220 and faces the hollow part 220.

[0079] As can be seen, since the heat dissipation device 100 is located on the outside of the housing 200, the structure of the housing 200 does not need to be changed when the structure is updated. It is compatible with the existing housing 200, so the replacement cost is low, which is conducive to the upgrade and update of the switch and makes it easier to achieve large-scale application.

[0080] When the pluggable module is inserted into the housing 200 from the front end 210, the pluggable module can drive the drive member 130 to rotate, thereby causing the heat transfer member 110 to be displaced so that the contact surface 1121 of the heat transfer member 110 can pass through the hollow part 220 and fit against the pluggable module in the housing 200.

[0081] In some embodiments, at least one of the aforementioned limiting notches 114 is formed on the heat dissipation portion 113. In this case, the optical switching device further includes a limiting member 230. The limiting notch 114 is used to cooperate with the limiting member 230 to limit the movement of the heat transfer member 110. The limiting member 230 is fixed relative to the housing 200. The number of limiting notches 114 and limiting portions can be selected according to actual conditions, such as one, two, or three.

[0082] Specifically, in this embodiment, please refer to... Figure 1 , Figure 2 as well as Figure 6 As shown, the heat dissipation part 113 includes a first heat dissipation part 1131 and a second heat dissipation part 1132 arranged sequentially along the insertion direction of the pluggable module. A limiting notch 114 is formed between the first heat dissipation part 1131 and the second heat dissipation part 1132. The second heat dissipation part 1132 has another limiting notch 114 formed on its rear side, away from the first heat dissipation part 1131. The two limiting notches 114 are respectively used to cooperate with the limiting member 230 to limit the movement of the heat transfer member 110. The limiting member 230 includes a body 231 disposed opposite to each other and a limiting part corresponding to the two limiting notches 114. The opposing bodies 231 are connected to the opposite sides of the housing 200 by means of bolts, snap-fit, or welding. The opposing bodies 231 are provided with protruding sections 232 extending outward from the hollow part 220 corresponding to the position of the limiting notch 114. The two corresponding protruding sections 232 are connected by a connecting section 233. The two protruding sections 232 and the corresponding connecting section 233 form the limiting part, which can limit the heat transfer element 110 and prevent the heat transfer element from detaching from the housing.

[0083] In a further embodiment, the limiting member 230 is made of an elastic material or has an elastic layer on its surface, such as being made of rubber or having a rubber layer on its surface, to prevent damage to the heat transfer member 110.

[0084] In some embodiments, the front end of the pluggable module is provided with an abutment end 310, which is used to abut against the abutment portion 133 to drive the drive member 130 to rotate.

[0085] Specifically, in this embodiment, see Figure 7 As shown, a slot is provided on the upper surface of the front end of the pluggable module, and a forward-facing stepped surface is formed at the slot. The abutment end 310 is formed at the stepped surface. When the pluggable module is inserted into the receiving cavity of the housing 200, the stepped surface can contact the abutment part 133 and drive the driving member 130 to rotate counterclockwise.

[0086] It is understood that since the optical switching device includes the aforementioned heat dissipation device 100, the structure of the heat dissipation device 100 shown in the foregoing embodiments can be correspondingly applied to the optical switching device. Therefore, the optical switching device has the technical effects corresponding to the heat dissipation device 100, which will not be described again in this embodiment.

[0087] See Figures 1 to 7 As shown, the present invention also provides a test device for a pluggable module, the test device for the pluggable module including a housing 200 and the aforementioned heat dissipation device 100.

[0088] The housing 200 has at least one receiving cavity and a cutout portion 220. The receiving cavity has an open front end 210 and an opposite rear end. The front end 210 is used to receive a pluggable module, and the rear end is provided with a structure for electrical connection with the pluggable module, such as a printed circuit board with an electrical interface. The cutout portion 220 is correspondingly disposed on the upper side of the receiving cavity and communicates with the receiving cavity. The housing 200 specifically refers to an optical cage.

[0089] The heat dissipation device 100 is disposed on the outside of the housing 200, the driving member 130 is pivotally connected to the outside of the housing 200 through the pivot part 131, and the heat transfer member 110 is disposed on the outside of the hollow part 220 and faces the hollow part 220.

[0090] When the pluggable module is inserted into the housing 200 from the front end 210, the pluggable module can drive the drive member 130 to rotate, thereby causing the heat transfer member 110 to be displaced so that the contact surface 1121 of the heat transfer member 110 can pass through the hollow part 220 and fit against the pluggable module in the housing 200.

[0091] In some embodiments, at least one of the aforementioned limiting notches 114 is formed on the heat dissipation portion 113. In this case, the optical switching device further includes a limiting member 230. The limiting notch 114 is used to cooperate with the limiting member 230 to limit the movement of the heat transfer member 110. The limiting member 230 is fixed relative to the housing 200. The number of limiting notches 114 and limiting portions can be selected according to actual conditions, such as one, two, or three.

[0092] Specifically, in this embodiment, please refer to... Figure 1 , Figure 2 as well as Figure 6 As shown, the heat dissipation part 113 includes a first heat dissipation part 1131 and a second heat dissipation part 1132 arranged sequentially along the insertion direction of the pluggable module. A limiting notch 114 is formed between the first heat dissipation part 1131 and the second heat dissipation part 1132. The second heat dissipation part 1132 has another limiting notch 114 formed on its rear side, away from the first heat dissipation part 1131. The two limiting notches 114 are respectively used to cooperate with the limiting member 230 to limit the movement of the heat transfer member 110. The limiting member 230 includes a body 231 disposed opposite to each other and a limiting part corresponding to the two limiting notches 114. The opposing bodies 231 are connected to the opposite sides of the housing 200 by means of bolts, snap-fit, or welding. The opposing bodies 231 are provided with protruding sections 232 extending outward from the hollowed-out portion 220 at the positions corresponding to the limiting notches 114. The two corresponding protruding sections 232 are connected by a connecting section 233. The two protruding sections 232 and the corresponding connecting section 233 form the limiting portion, which can limit the heat transfer element 110 and prevent the heat transfer element 110 from detaching from the housing 200.

[0093] In a further embodiment, the limiting member 230 is made of an elastic material or has an elastic layer on its surface, such as being made of rubber or having a rubber layer on its surface, to prevent damage to the heat transfer member 110.

[0094] In some embodiments, the front end of the pluggable module is provided with an abutment end 310, which is used to abut against the abutment portion 133 to drive the drive member 130 to rotate.

[0095] Specifically, in this embodiment, see Figure 7As shown, a slot is provided on the upper surface of the front end of the pluggable module, and a forward-facing stepped surface is formed at the slot. The abutment end 310 is formed at the stepped surface. When the pluggable module is inserted into the receiving cavity of the housing 200, the stepped surface can contact the abutment part 133 and drive the driving member 130 to rotate counterclockwise.

[0096] It is understood that since the test device for the pluggable module includes the aforementioned heat dissipation device 100, the structure of the heat dissipation device 100 shown in the foregoing embodiments can be correspondingly applied to the test device for the pluggable module. Therefore, the test device for the pluggable module has the technical effects corresponding to the heat dissipation device 100, which will not be elaborated in this embodiment.

[0097] In some embodiments, the testing method using the test apparatus for the pluggable module is as follows: First, a pluggable module is inserted into the receiving cavity from the front end 210 of the housing 200. The pluggable module pushes the connecting portion 132 of the drive member 130, causing the drive member 130 to rotate. The drive member 130 drives the guide member 120 and the heat transfer member 110 to shift, causing the contact surface 1121 of the heat transfer member 110 to pass through the hollow portion 220 of the housing 200 and abut against the pluggable module. Then, relevant tests are performed. For example, the temperature of the pluggable module can be tested using a temperature sensor to perform a heat dissipation performance test.

[0098] In some embodiments, after the test, the pluggable module is pulled out of the housing 200. At this time, the driving member 130 resets, and the driving member 130 drives the guide member 120 and the heat transfer member 110 to reset, so that the contact surface 1121 of the heat transfer member 110 moves away from the hollow portion 220. In some implementations, the reset of the driving member 130 is automatically achieved by the reset member 140; in other implementations, the reset of the driving member 130 can also be achieved by the action of other external forces.

[0099] Therefore, when the pluggable module enters the receiving cavity of the housing 200 from the front end 210, the contact surface 1121 of the heat transfer element 110 has not yet reached the position of contacting the pluggable module. Consequently, no relative friction occurs between the pluggable module and the contact surface 1121, and scratches and wear are unlikely to occur between the contact surface 1121 and the pluggable module. When the pluggable module is installed in the receiving cavity, the contact surface 1121 abuts against the abutment portion 132, driving the drive element 130 to rotate and causing the contact surface 1121 to descend and pass through the hollow portion. 220 and is attached to the pluggable module in the housing 200, so that the heat transfer element 110 can dissipate heat from the pluggable module; when it is necessary to pull the pluggable module out of the receiving cavity, the driving element 130 can rotate under the action of the reset element 140 (of course, in other embodiments it can also be under the action of other external forces) to drive the heat transfer element 110 away from the position attached to the pluggable module, so that when the pluggable module is pulled out, there is no relative friction between the pluggable module and the contact surface 1121, and scratches and wear are not easily generated between the contact surface 1121 and the pluggable module.

[0100] The heat dissipation device 100 makes it less likely for the pluggable module to rub against the heat transfer element 110 during insertion, installation, and removal, thus preventing scratches and wear between the contact surface 1121 and the pluggable module. At the same time, it also ensures that the contact surface 1121 can fit against the pluggable module after it is installed in place to achieve a good heat dissipation effect.

[0101] Meanwhile, since the heat dissipation device 100 is located on the outside of the housing 200, the structure of the housing 200 does not need to be changed when the structure is updated. It is compatible with the existing housing 200, so the replacement cost is low, which is conducive to the upgrade and update of the switch and makes it easier to achieve large-scale application.

[0102] In the test apparatus for the pluggable module, due to the use of the heat dissipation device 100, the heat dissipation device 100 and the pluggable module are less likely to rub against and be damaged during the test; furthermore, the pluggable module can use a contact heat dissipation scheme that contacts the heat dissipation device 100 during the test, without the need to use a non-contact heat dissipation scheme, such as jet cooling, which helps to reduce energy consumption.

Claims

1. A heat dissipation device for dissipating heat from a pluggable module inserted into a housing, wherein the housing has a perforated portion on the side facing the heat dissipation device, characterized in that, The heat dissipation device includes: A heat transfer element, the heat transfer element including a heat-conducting part having a contact surface for contacting the pluggable module to be cooled; A drive component is disposed outside the housing; the drive component has a connecting portion and an abutting portion, the connecting portion being located on the side of the heat transfer component facing away from the contact surface; the abutting portion is used to extend into the housing to abut against the pluggable module; When the abutting part is not under force, the heat-conducting part of the heat transfer element is in a first position relative to the hollow part of the housing; when the abutting part is pushed by the pluggable module inserted into the housing, the driving member can drive the heat-conducting part of the heat transfer element to extend into the hollow part of the housing until the contact surface abuts against the pluggable module in a second position. The heat dissipation device also includes a guide member, and the connecting part is connected to the heat transfer member through the guide member.

2. The heat dissipation device according to claim 1, characterized in that, The driving component includes a first rotating arm, a pivoting part, and a second rotating arm, wherein the abutting part is located on the first rotating arm, the connecting part is located on the second rotating arm, and the pivoting part is pivotally connected to a fulcrum part.

3. The heat dissipation device according to claim 2, characterized in that, The heat dissipation device further includes a reset member connected to the drive member. The reset member is used to reset the drive member when the pluggable module leaves the abutment portion, so as to drive the heat-conducting portion away from the second position.

4. The heat dissipation device according to claim 3, characterized in that, The heat dissipation device further includes a support member, which is fixed to one side of the housing and has a fulcrum portion for pivotally connecting the drive member.

5. The heat dissipation device according to claim 4, characterized in that, The carrier is provided with a first connecting part, the driving part is provided with a second connecting part, and the two ends of the reset part are respectively connected to the first connecting part and the second connecting part.

6. The heat dissipation device according to claim 1, characterized in that, The guide member and the heat transfer member are connected by an elastic member.

7. The heat dissipation device according to claim 1, characterized in that, The guide is a temperature-sensing probe, which has a retractable detection part; The heat transfer element has a through hole that penetrates the contact surface, and the detection part is inserted into the through hole to detect the temperature of the pluggable module.

8. The heat dissipation device according to claim 1, characterized in that, The connecting part is provided with a first guide structure, the guide member is provided with a second guide structure, and the driving member drives the guide member to move by cooperating with the first guide structure and the second guide structure.

9. The heat dissipation device according to claim 8, characterized in that, In the first guide structure and the second guide structure, one is a guide arm and the other is a guide groove.

10. The heat dissipation device according to claim 1, characterized in that, The heat transfer component further includes a heat dissipation section, which is disposed on the side of the heat-conducting section opposite to the contact surface, and at least one limiting notch is formed on the heat dissipation section.

11. An optical switching device, characterized in that, Including: A housing having at least one receiving cavity and a cutout portion communicating with the receiving cavity, the receiving cavity having an open front end for receiving an externally inserted pluggable module; and The heat dissipation device as described in any one of claims 1-10, wherein the heat dissipation device is disposed on the outside of the housing, and the heat transfer element faces the hollow portion.

12. The optical switching device according to claim 11, characterized in that, The heat transfer component further includes a heat dissipation section, which is disposed on the side of the heat conduction section opposite to the contact surface, and the heat dissipation section is provided with at least one limiting notch. The optical switching device also includes a limiting component, which has a limiting part corresponding to the limiting notch.

13. A testing device for a pluggable module, characterized in that, Including: A housing having at least one receiving cavity and a cutout portion communicating with the receiving cavity, the receiving cavity having an open front end for receiving an externally inserted pluggable module; and According to any one of claims 1-10, the heat dissipation device is disposed on the outside of the housing, and the heat transfer element faces the hollow portion.

14. The testing apparatus for a pluggable module according to claim 13, characterized in that, It also includes a limiting member, which has a limiting portion corresponding to the limiting notch of the heat transfer member.

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