Controller for molecular pump

Abstract

The utility model discloses a controller for a molecular pump, and the controller comprises a housing which comprises a first housing, a second housing, and an inner cavity formed between the first housing and the second housing; the control module is arranged in the inner cavity and comprises a plug-in type connecting assembly, an adapter plate fixed to the first shell and used for being electrically connected with the molecular pump, and a main control board arranged on the adapter plate, electrically connected with the adapter plate through the plug-in type connecting assembly and used for receiving electric energy; the heat conduction rubber mat is arranged between the second shell and the main control board; and the abutting component is arranged on the inner wall of the first shell and is parallel to the plug-in type connecting assembly, so that the main control board and the heat-conducting rubber mat are tightly pressed on the inner wall of the second shell. In the assembling process of the first shell and the second shell, the main control board and the adapter plate are connected through the plug-in type connecting assembly, and when the position, installed in the first shell, of the adapter plate deviates, the abutting component arranged in the first shell can still press the main control board and the heat conduction rubber mat on the inner wall of the second shell, and the rejection rate is reduced.

Description

Technical Field

[0001] The embodiments of the present utility model relate to the technical field of molecular pump controllers. More specifically, the present utility model relates to a controller for a molecular pump. Background Art

[0002] A controller is a device for controlling the operation of a molecular pump, and it can precisely control the molecular pump by adjusting parameters such as the rotation speed and power of the pump. Existing controllers include a first housing, a second housing detachably connected to the first housing, and a control module disposed between the first housing and the second housing (also known as the inner cavity). The control module includes an adapter plate installed in the first housing and used to connect to the molecular pump, a main control board installed in the second housing and used to connect to the mains, and a pluggable connection component for electrically connecting the adapter plate and the main control board. Among them, the main control board is used to receive the mains power and convert it into electrical energy suitable for driving the molecular pump to supply the molecular pump through the adapter plate.

[0003] During assembly, the adapter plate is installed on the first housing, the main control board is installed on the second housing, and then the first housing is connected to the second housing, and the adapter plate and the main control board are electrically connected through the pluggable connection component. During this process, if the position of the adapter plate installed in the first housing deviates due to processing errors, or the position of the main control board installed on the second housing deviates due to processing errors, the adapter plate and the main control board cannot be electrically connected through the pluggable connection component during the assembly of the first housing and the second housing. This is because the plug in the pluggable connection component cannot be aligned and inserted into the socket, which hinders the smooth completion of the entire assembly process and increases the rejection rate. Summary of the Utility Model

[0004] To solve one or more of the above-mentioned technical problems, the present utility model provides a controller for a molecular pump.

[0005] The present application provides a controller for a molecular pump, which includes: a housing, which includes a first housing, a second housing detachably connected to the first housing, and an inner cavity formed between the first housing and the second housing; a control module, which is disposed in the inner cavity and includes a pluggable connection component, an adapter plate fixed on the inner wall of the first housing and used to be electrically connected to the molecular pump, and a main control board disposed on the adapter plate and electrically connected to the adapter plate through the pluggable connection component and used to receive electrical energy; a thermal conductive gasket, which is disposed between the inner wall of the second housing and the main control board; and a abutting member, which is fixedly disposed on the inner wall of the first housing and parallel to the pluggable connection component to press the main control board and the thermal conductive gasket against the inner wall of the second housing.

[0006] In one embodiment, the plug-in connection assembly includes a male connector provided on one of the adapter board and the main control board, and a female connector provided on the other of the adapter board and the main control board and cooperating with the male connector.

[0007] In one embodiment, the male connector is an electrical connection plug or a conductive pin, and the female connector is an electrical connection socket that cooperates with the electrical connection plug, or a conductive sleeve that cooperates with the conductive pin, wherein the sum of the heights of the male connector and the female connector is greater than the preset spacing between the adapter board and the main control board, and less than 2 times the preset spacing.

[0008] In one embodiment, the first housing and the second housing are fixed by a locking bolt, and the locking bolt passes through the abutting member when fixing the first housing and the second housing.

[0009] In one embodiment, the inner wall of the second shell is provided with a stepped boss extending toward the main control board, the stepped boss includes a first step surface in contact with the main control board, a second step surface in contact with the abutment member and closer to the first shell than the first step surface, and an internal threaded hole formed on the second step surface for the locking bolt to be screwed into, the surface of the thermal conductive pad used to contact the main control board is between the first step surface and the second step surface when not abutting the main control board, and the distance from the second step surface to the first step surface is less than or equal to the thickness of the plate body of the main control board.

[0010] In one embodiment, the abutment member includes a fixed sleeve fixed on the interior of the first shell and sleeved outside the locking bolt, a movable sleeve sleeved outside the locking bolt and docking with the fixed sleeve, and an elastic gasket sleeved outside the locking bolt and located between the movable sleeve and the main control board.

[0011] In one embodiment, a notch is provided at a corner of the main control board to avoid the locking bolt, and the notch is configured to allow the abutment member to abut the main control board at the notch when the locking bolt passes through the abutment member.

[0012] In one embodiment, the controller further includes a power plug or a power socket that penetrates the first housing and electrically connects the molecular pump to the adapter board.

[0013] In one embodiment, the controller further includes a locking member for fixing the adapter plate on the inner wall of the first shell.

[0014] In one embodiment, the controller further includes a power connector electrically connected to the main control board, which penetrates through the first housing and / or the second housing.

[0015] In the controller provided above, the main control board is not directly fixed and installed on the second housing as in the prior art. Instead, it is pressed tightly against the inner wall of the second housing by a contact member added inside the first housing, and the main control board is connected to the adapter board through a pluggable connection component arranged in parallel with the contact member during the assembly process of the first housing and the second housing, eliminating the step of separately installing the main control board on the second housing and improving the assembly efficiency. This assembly method not only does not require the main control board to have an accurate assembly position inside the second housing, but also when the position of the adapter board installed inside the first housing deviates, the contact member can still press the main control board and the thermal conductive gasket tightly against the inner wall of the second housing, reducing the scrap rate. Moreover, a thermal conductive gasket is added between the inner wall of the second housing and the main control board. The thermal conductive gasket can not only improve the heat conduction effect between the main control board and the second housing, but also prevent the main control board from being directly damaged by the contact member, thus contributing to improving the heat dissipation efficiency of the controller. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] By referring to the accompanying drawings and reading the following detailed description, the above and other objects, features, and advantages of the exemplary embodiments of the present utility model will become readily understood. In the drawings, several embodiments of the present utility model are shown in an exemplary rather than restrictive manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:

[0017] Figure 1 is a schematic diagram of the overall assembled structure of an embodiment of the present utility model;

[0018] Figure 2 is an exploded view of the overall structure of an embodiment of the present utility model;

[0019] Figure 3 is a connection schematic diagram of the control module of an embodiment of the present utility model;

[0020] Figure 4 is a schematic diagram of the structure of the housing of an embodiment of the present utility model;

[0021] Figure 5 is a schematic diagram of the structure of the second housing of an embodiment of the present utility model;

[0022] Figure 6 is Figure 5 a partial enlarged view of part A in

[0023] Figure 7 is Figure 1 the right view of

[0024] Figure 8 is Figure 7 the partial enlarged view at position C in

[0025] Explanation of reference numerals in the drawings: 100, housing; 110, first housing; 111, first notch; 120, second housing; 121, second notch; 122, stepped boss; 1221, first stepped surface; 1222, second stepped surface; 1223, internal threaded hole; 123, third through hole; 140, locking bolt; 200, control module; 210, pluggable connection component; 211, male connector; 212, female connector; 220, adapter plate; 221, power transmission plug; 222, first through hole; 230, main control board; 231, fourth notch; 232, fan plug; 300, thermal conductive gasket; 310, third notch; 400, abutting member; 410, elastic gasket; 420, fixed sleeve; 430, movable sleeve; 500, locking member; 510, protruding portion; 511, internal thread; 520, locking screw; 600, power supply connector. Detailed implementation manners

[0026] Next, the technical solutions in the embodiments of the present disclosure will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, rather than all the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present disclosure.

[0027] An embodiment of the present application provides a controller for a molecular pump, which is used in cooperation with the molecular pump, and its function is to provide continuous and stable power for the molecular pump to ensure that the molecular pump can operate efficiently according to actual needs. As Figure 1 and Figure 2 shown, the controller includes a housing 100, and the housing 100 includes a first housing 110, a second housing 120 detachably connected to the first housing 110, and an inner cavity formed between the first housing 110 and the second housing 120. The first housing 110 and the second housing 120 are fixed by at least one locking bolt 140. Preferably, the number of locking bolts 140 is multiple, especially four. The four locking bolts 140 pass through the first housing 110 and are screwed into the four internal threaded holes 1223 of the second housing 120, thereby realizing the detachable connection between the first housing 110 and the second housing 120.

[0028] The controller further includes a control module 200, which is disposed in the inner cavity of the housing 100. Specifically, the control module 200 includes a pluggable connection component 210, an adapter board 220 fixed on the inner wall of the first housing 110, and a main control board 230 that is electrically connected to the adapter board 220 through the pluggable connection component 210 and is used to receive electric energy. The adapter board 220 is used to be electrically connected to the molecular pump. For example, the control module 200 further includes a power transmission plug 221 or a power transmission socket that penetrates the first housing 110 and is disposed on the adapter board 220. The power transmission plug 221 or the power transmission socket is used to insert into or receive the power transmission socket and the power transmission plug of the molecular pump, so as to realize the electrical connection between the molecular pump and the adapter board 220. The main control board 230 is used to receive electric energy (such as 380V mains power), adjust it into electric energy suitable for controlling the molecular pump (such as 24V, 48V, 72V, 110V DC power), and supply the electric energy to the molecular pump through the adapter board 220.

[0029] The controller further includes a thermal conductive gasket 300 disposed between the inner wall of the second housing 120 and the main control board 230. The thermal conductive gasket 300 is used to quickly transfer the heat generated by the main control board 230 during operation to the second housing 120 and even the housing 100, so that the housing 100 can quickly dissipate the heat of the main control board 230 and realize the efficient heat dissipation of the main control board 230.

[0030] Preferably, as Figure 5 and Figure 6As shown, the inner wall of the second housing 120 is provided with a stepped boss 122 extending toward the main control board 230. The stepped boss 122 includes a first stepped surface 1221 that contacts the main control board 230, a second stepped surface 1222 that contacts the abutment member 400 and is closer to the first housing 110 than the first stepped surface 1221, and an internally threaded hole 1223 formed on the second stepped surface 1222 for threading the locking bolt 140. The surface of the thermal pad 300 that contacts the main control board 230 is located between the first stepped surface 1221 and the second stepped surface 1222 when not abutting the main control board 230. The distance from the second stepped surface 1222 to the first stepped surface 1221 is less than or equal to the thickness of the main control board 230. A fourth notch 231 is provided around the main control board 230 to avoid the second stepped surface 1222. A third notch 310 is defined around the thermal pad 300 to avoid the second step surface 1222. In one embodiment, before assembling the first and second housings 110 and 120, the thermal pad 300 and the main control board 230 are placed sequentially on the inner wall of the second housing 120. The thickness of the thermal pad 300 is greater than the first step surface 1221 and less than the second step surface 1222. This ensures that the main control board 230 is positioned above the first step surface 1221 when not pressed against the thermal pad 300, maintaining a safe distance of approximately 0.10-0.15 mm from the first step surface 1221. During the process of assembling the first shell 110 and the second shell 120, the abutting member 400 presses the main control board 230 toward the first step surface 1221 and presses against the first step surface 1221. At the same time, the abutting member 400 abuts against the second step surface 1222 to fix the main control board 230 in the second shell 120. This fixing method enables the main control board 230 to have a moving distance in a direction parallel to the abutting member 400 during the assembly process, which is conducive to the smooth completion of the entire assembly process.

[0031] More preferably, the abutting member 400 includes a fixed sleeve 420 fixed to the inside of the first housing 110 and sleeved outside the locking bolt 140, a movable sleeve 430 sleeved outside the locking bolt 140 and docking with the fixed sleeve 420, and an elastic gasket 410 sleeved outside the locking bolt 140 and located between the movable sleeve 430 and the main control board 230. In one embodiment, as Figure 7 and Figure 8 As shown, the first shell 110 and the fixed sleeve 420 are integrally formed, one end of the movable sleeve 430 is inserted into the fixed sleeve 420, and the other end is in contact with the second step surface 1222 through the elastic gasket 410, and the locking bolt 140 passes through the first shell 110, the fixed sleeve 420 and the movable sleeve 430 in sequence and is screwed into the internal threaded hole 1223 formed on the second step surface 1222.

[0032] The controller further includes an abutting member 400. The abutting member 400 is fixedly arranged on the inner wall of the first housing 110 and is parallel to the pluggable connection assembly 210, so as to press the main control board 230 and the thermal conductive gasket 300 against the inner wall of the second housing 120. Different from the prior art where the main control board 230 is directly fixed and installed on the second housing 120, before assembling the first housing 110 and the second housing 120, the thermal conductive gasket 300 and the main control board 230 are first placed on the stepped boss 122 provided on the inner wall of the second housing 120, and then the main control board 230 is pressed tightly against the first stepped surface 1221 by the abutting member 400 additionally arranged inside the first housing 110. Meanwhile, the end of the abutting member 400 close to the second housing 120 abuts against the second stepped surface 1222. In one embodiment, the elastic gasket 410 sleeved outside the locking bolt 140 and located between the movable sleeve 430 and the main control board 230 abuts against the second stepped surface 1222 simultaneously during the process of pressing the main control board 230 tightly. This method not only does not require the main control board 230 to have an accurate assembly position inside the second housing 120, but also when the position of the adapter board 220 installed inside the first housing 110 deviates, the abutting member 400 can still press the main control board 230 and the thermal conductive gasket 300 against the inner wall of the second housing 120, and realize the overall fixation of the control module 200 inside the housing 100, thereby effectively reducing the rejection rate. When the abutting member 400 presses the main control board 230 and the thermal conductive gasket 300 against the inner wall of the second housing 120, the thermal conductive gasket 300 between the inner wall of the second housing 120 and the main control board 230 can not only improve the heat conduction effect between the main control board 230 and the second housing 120, but also prevent the main control board 230 from being directly damaged by the abutting member 400, thus being beneficial to improving the heat dissipation efficiency of the controller.

[0033] Specifically, considering the dimensional errors existing in the processing of components such as the first housing 110, the second housing 120, and the abutting member 400, when the position of the adapter board 220 installed inside the first housing 110 deviates, it will cause the abutting member 400 to be unable to press the main control board 230 and the thermal conductive gasket 300 tightly against the inner wall of the second housing 120 during the assembly process of the first housing 110 and the second housing 120, as Figure 2As shown, an elastic gasket 410 is added between the abutting member 400 and the main control board 230 to avoid the situation where the main control board 230 and the thermal conductive gasket 300 cannot be tightly pressed against the inner wall of the second housing 120 by the abutting member 400 during the assembly process of the first housing 110 and the second housing 120, reducing the rejection rate. In addition, the elastic gasket 410 and the thermal conductive gasket 300 provided at the end of the abutting member 400 are respectively located on both sides of the main control board 230, and the two cooperate with each other to avoid the abutting member 400 directly damaging the main control board 230, reducing the rejection rate. The size of the elastic gasket 410 is not specifically limited and can be flexibly adjusted according to the actual assembly process. More preferably, when the locking bolt 140 passes through the elastic gasket 410 provided on the abutting member 400, the elastic gasket 410 is allowed to abut against the main control board 230 at the fourth notch 231 provided on the main control board 230, and the main control board 230 and the thermal conductive gasket 300 can be tightly pressed against the inner wall of the second housing 120 during the assembly process of the first housing 110 and the second housing 120. The elastic gasket 410 is provided with a through hole for avoiding the locking bolt 140.

[0034] The controller further includes a fan plug 232 provided on the main control board 230 and used for connecting the molecular pump fan. The second housing 120 is provided with a third through hole 123 for avoiding the fan plug 232. In one embodiment, as Figure 3 shown, the bottom of the fan plug 232 is longer than the bottom of the main control board 230. When assembling the second housing 120 and the main control board 230, the main control board 230 needs to be tilted first so that the fan plug 232 is placed in the third through hole 123. At this time, the main control board 230 is kept at a distance from the first stepped surface 1221 under the support of the thermal conductive gasket 300. Subsequently, the assembled first housing 110 and the adapter board 220 can be pressed against the second housing 120 for assembly, so as to realize the connection between the first housing 110 and the second housing 120 while the adapter board 220 is connected to the main control board 230 through the plug-in connection assembly 210. The fan plug 232 is used to insert the power transmission plug of the molecular pump fan to achieve a better heat dissipation effect.

[0035] Preferably, the locking bolt 140 is configured to not only pass through the abutting member 400 but also fix the first housing 110 and the second housing 120 together. For example, the number of the abutting members 400 is the same as the number of the locking bolts 140, and both are four. The four locking bolts 140 simultaneously pass through the corresponding corners of the first housing 110 and the corresponding abutting members 400 and are screwed into the four third through holes 123 of the second housing 120. At this time, the four abutting members 400 can simultaneously press the main control board 230 and the thermal conductive gasket 300 against the inner wall of the second housing 120.

[0036] More preferably, a fourth notch 231 for avoiding the locking bolt 140 is provided at the corner of the main control board 230. The fourth notch 231 is configured to allow the abutting member 400 to abut against the main control board 230 at the fourth notch 231 when the locking bolt 140 penetrates the abutting member 400. Specifically, the fourth notch 231 can provide a space for the locking bolt 140 to pass through the main control board 230, but still leave enough space to allow the abutting member 400 to abut against the main control board 230, so as to ensure that the abutting member 400 can press the main control board 230 and the heat-conducting gasket 300 against the inner wall of the second housing 120 during the assembly of the first housing 110 and the second housing 120. Correspondingly, a through hole for avoiding the penetration of the locking bolt 140 is provided on the heat-conducting gasket 300.

[0037] Preferably, as Figure 3 shown, the pluggable connection assembly 210 includes a male connector 211 provided on one of the adapter board 220 and the main control board 230 and electrically connected to the main control board 230, and a female connector 212 provided on the other of the adapter board 220 and the main control board 230 and used for cooperating with the male connector 211. Among them, the male connector 211 is preferably an electrical connection plug or a conductive pin, and the female connector 212 is preferably an electrical connection socket that cooperates with the electrical connection plug, or a conductive sleeve that cooperates with the conductive pin. By inserting the male connector 211 into the female connector 212, the transmission of electrical energy between the adapter board 220 and the main control board 230 can be realized.

[0038] Preferably, the sum of the heights of the male connector 211 and the female connector 212 is greater than the preset distance between the adapter board 220 and the main control board 230 and less than twice the preset distance. In this way, the adverse situation of passive disengagement during the plugging and matching of the male connector 211 and the female connector 212 when the abutting member 400 presses the main control board 230 and the heat-conducting gasket 300 against the inner wall of the second housing 120 can be effectively avoided. As an example, the preset distance between the adapter board 220 and the main control board 230 is 12 mm - 15 mm, and this distance can reserve enough safety distance for components such as plugs and sockets provided on the adapter board 220 and / or the main control board 230 to avoid collision or interference during installation, operation or maintenance.

[0039] The controller further includes a locking member 500 for fixing the adapter board 220 on the inner wall of the first housing 110. As an example, the locking member 500 includes a locking screw 520 that can penetrate the adapter board 220 and can be screwed into a protruding portion 510 (with internal threads) provided on the inner wall of the first housing 110. As Figure 2As shown in the figure, on the left and right sides of the inner wall of the first housing 110, there are respectively provided protruding portions 510. The protruding portions 510 are provided with internal threads 511. On the adapter plate 220, there is a first through hole 222 for avoiding the locking screw 520. The locking screw 520 can pass through the first through hole 222 on the adapter plate 220 and be screwed into the internal threads 511 on the protruding portions 510, thereby realizing the fixation of the adapter plate 220 on the inner wall of the first housing 110.

[0040] The controller further includes a communication port and a power connector 600 that are electrically connected to the main control board 230. The communication port and the power connector 600 both penetrate the first housing 110 and / or the second housing 120. The communication port can be selected as a serial communication interface (RS-232 interface, RS-485 interface or DP interface) or a parallel communication interface (such as a GPIB interface), which is used for the main control board 230 to communicate with external devices (such as a computer) so as to change the code or parameters stored therein. The power connector 600 can be selected as, for example, a power interface or a power plug, which is used to receive mains power to provide electrical energy for the main control board 230 and even the entire controller. As Figure 4 As shown in the figure, in order to facilitate the communication port and the power connector 600 to penetrate out of the housing 100, a through hole allowing the communication port and the power connector 600 can be constructed in the housing 100. The through hole is formed by enclosing a first notch 111 provided on the top side of the first housing 110 and a second notch 121 provided on the top side of the second housing 120.

[0041] In the above description of the present application, unless otherwise clearly specified and limited, terms such as "fixed", "installed", "connected" or "coupled" should be understood in a broad sense. For example, with respect to the term "connected", it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, or it can be the communication inside two components or the interaction relationship between two components. Therefore, unless otherwise clearly limited in the present application, those skilled in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

[0042] According to the above description of the present application, those skilled in the art can also understand the following terms used. For example, terms indicating orientation or positional relationship such as "left", "right", etc. are based on the orientation or positional relationship shown in the drawings of the present application. It is only for the purpose of facilitating the description of the solution of the present invention and simplifying the description, rather than explicitly or implicitly indicating that the device or component involved must have the specific orientation, be constructed and operate in the specific orientation. Therefore, the above terms of orientation or positional relationship cannot be understood or interpreted as a limitation to the solution of the present invention.

[0043] In addition, the terms "first" or "second" used in this application, which are terms referring to numbers or ordinals, are only for descriptive purposes and should not be construed as explicitly or implicitly indicating relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this application, the meaning of "a plurality" is at least two, such as two, three or more, etc., unless otherwise specifically defined.

[0044] Although several embodiments of the present utility model have been shown and described herein, it will be apparent to those skilled in the art that such embodiments are provided by way of example only. Those skilled in the art can envision many changes, alterations, and alternative ways without departing from the spirit and scope of the present utility model. It should be understood that various alternative embodiments of the present utility model described herein may be employed in the practice of the present utility model. The appended claims are intended to define the scope of protection of the present utility model and thus cover equivalents or alternatives within the scope of these claims.

Claims

1. A controller for a molecular pump, characterized in that, The controller includes: a housing, which includes a first housing, a second housing detachably connected to the first housing, and an inner cavity formed between the first housing and the second housing; a control module, which is arranged in the inner cavity and includes a pluggable connection component, an adapter board fixed on the inner wall of the first housing and used for electrically connecting with the molecular pump, and a main control board electrically connected with the adapter board through the pluggable connection component and used for receiving electric energy; a thermal conductive gasket, which is arranged between the inner wall of the second housing and the main control board; and a contact member, which is fixedly arranged on the inner wall of the first housing and is parallel to the pluggable connection component to press the main control board and the thermal conductive gasket against the inner wall of the second housing.

2. The controller for a molecular pump according to claim 1, characterized in that, The pluggable connection component includes a male connector arranged on one of the adapter board and the main control board, and a female connector arranged on the other of the adapter board and the main control board and cooperating with the male connector.

3. The controller for a molecular pump according to claim 2, wherein The male connector is an electrical connection plug or a conductive pin, and the female connector is an electrical connection socket cooperating with the electrical connection plug or a conductive sleeve cooperating with the conductive pin. Wherein, the sum of the heights of the male connector and the female connector is greater than a preset distance between the adapter board and the main control board and less than twice the preset distance.

4. The controller for a molecular pump according to any one of claims 1 to 3, characterized in that, The first housing and the second housing are fixed by locking bolts, and the locking bolts penetrate through the contact member when fixing the first housing and the second housing.

5. The controller for a molecular pump according to claim 4, characterized in that, The inner wall of the second housing is provided with a stepped boss extending towards the main control board. The stepped boss includes a first stepped surface contacting the main control board, a second stepped surface contacting the contact member and closer to the first housing than the first stepped surface, and an internal threaded hole formed on the second stepped surface for screwing in the locking bolt. The surface of the thermal conductive gasket for contacting the main control board is between the first stepped surface and the second stepped surface when not contacting the main control board, and the distance from the second stepped surface to the first stepped surface is less than or equal to the thickness of the board body of the main control board.

6. The controller for a molecular pump according to claim 5, characterized in that, The contact member includes a fixed sleeve fixedly arranged inside the first housing and sleeved outside the locking bolt, a movable sleeve sleeved outside the locking bolt and butting against the fixed sleeve, and an elastic gasket sleeved outside the locking bolt and located between the movable sleeve and the main control board.

7. The controller for a molecular pump according to claim 5, characterized in that, A notch for avoiding the locking bolt is provided at the corner of the main control board, and the notch is configured to allow the contact member to contact the main control board at the notch when the locking bolt penetrates through the contact member.

8. The controller for a molecular pump according to claim 7, characterized in that, The controller further includes a power transmission plug or a power transmission socket penetrating through the first housing and electrically connecting the molecular pump and the adapter board.

9. The controller for a molecular pump according to claim 7, characterized in that, The controller further includes a locking member for fixing the adapter board on the inner wall of the first housing.

10. The controller for a molecular pump according to claim 7, characterized in that, The controller further includes a power supply connector electrically connected with the main control board, which penetrates through the first housing and / or the second housing.

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