Screwless connection controller

Abstract

The utility model discloses a screw-free connection controller, which comprises a lower shell, an upper shell and a PCB (Printed Circuit Board), the side wall of the lower shell is provided with a first clamping structure, and the inner bottom surface of the lower shell is provided with a limiting column and a first supporting structure; a second clamping structure is arranged on the side wall of the upper shell, and a limiting cylinder and a second supporting structure are arranged on the inner top surface of the upper shell; a plate body of the PCB is provided with a limiting through hole; the second clamping structure and the first clamping structure are correspondingly arranged in a clamping mode, the limiting cylinder is arranged on the limiting column in a sleeving mode, and the limiting column is inserted into the limiting through hole; the supporting surface of the first supporting structure is in contact with the lower surface of the PCB, and the supporting surface of the second supporting structure is in contact with the upper surface of the PCB. According to the controller connected without screws, screws are not used for connection, the total mass of the structure is reduced, the cost is reduced, and the requirement for light weight is met.

Description

Technical Field

[0001] The utility model relates to the technical field of controllers, in particular to a screw-free connection controller. Background Art

[0002] With the development of R&D technology in the automotive industry and users' increasing pursuit of scene comfort, companies are gradually strengthening user experience and scene perception on the basis of ensuring the traditional safety performance of automobiles. The number of functions required to be realized by automobiles is gradually increasing, which directly leads to an increase in the load of the body controller. More PIN pins need to be set on the controller as output or receiving sources, and the size of the controller also increases accordingly.

[0003] At present, large-size controllers on the market generally use screws to fix their components to complete the assembly of PCBA and shell. The material cost and process cost of controllers with this structure are relatively high, and the weight of the product is increased to a certain extent, which does not meet the demand for lightweight automobiles. Utility Model Content

[0004] In view of this, the utility model provides a screwless connection controller, which does not use screw connections, reduces the total mass of the structure, reduces costs, and meets lightweight requirements.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A screwless connection controller, comprising:

[0007] A lower shell, wherein the side wall of the lower shell is provided with a first clamping structure, and the inner bottom surface of the lower shell is provided with a limiting column and a first supporting structure;

[0008] An upper shell, wherein the side wall of the upper shell is provided with a second clamping structure, and the inner top surface of the upper shell is provided with a limiting cylinder and a second supporting structure;

[0009] A PCB board, wherein a plate body of the PCB board is provided with a limited through hole;

[0010] The second clamping structure is correspondingly clamped with the first clamping structure, the limiting cylinder is sleeved on the limiting column, and the limiting column is inserted into the limiting through hole; the supporting surface of the first supporting structure contacts the lower surface of the PCB board, and the supporting surface of the second supporting structure contacts the upper surface of the PCB board.

[0011] Optionally, the limiting column is arranged on the inner bottom surface of the lower shell near the side wall, and the limiting column includes a first positioning column and a second positioning column, and the first positioning column and the second positioning column are respectively arranged at both ends of the diagonal line of the inner bottom surface of the lower shell.

[0012] Optionally, the first positioning column includes a plurality of first side edges arranged around the axis, the plurality of first side edges are arranged perpendicular to the inner bottom surface of the lower shell, the first side edge away from the axis of the first positioning column includes a first guide surface and a first support inclined surface arranged to intersect, the first support inclined surface is arranged close to the inner bottom surface, and a crushing ridge is arranged at the intersection of the first guide surface and the first support inclined surface;

[0013] The second positioning column includes a plurality of second side edges arranged around the axis, and a plurality of the second side edges are arranged perpendicular to the inner bottom surface of the lower shell. The side surface of the second side edge away from the axis of the second positioning column includes a second guide surface and a second supporting inclined surface that are intersectingly arranged, and the second supporting inclined surface is arranged close to the inner bottom surface.

[0014] Optionally, the limiting cylinder includes a first limiting cylinder and a second limiting cylinder, the first limiting cylinder is arranged corresponding to the first positioning column, and the second limiting cylinder is arranged corresponding to the second positioning column.

[0015] Optionally, the limiting through hole includes a main limiting hole and an auxiliary limiting hole, the main limiting hole is a circular hole, which is arranged corresponding to the first positioning column, and the auxiliary limiting hole is an oblong hole, which is arranged corresponding to the second positioning column.

[0016] Optionally, the first clamping structure comprises a cantilever plate, the cantilever plate is fixedly arranged on the top of the side wall of the lower shell, and a clamping groove is arranged on the surface of the cantilever plate used for clamping with the second clamping structure;

[0017] The second clamping structure comprises a clamping surface, a guiding inclined surface is arranged at an opening end of the clamping surface close to the upper shell, and the clamping surface is clamped with the clamping slot.

[0018] Optionally, a first skirt plate for supporting the connector on the PCB board is provided on one side of the lower shell, and a second skirt plate for surrounding the connector on the PCB board is provided on one side of the upper shell, and the first skirt plate and the second skirt plate are cooperated to surround the connector on the PCB board.

[0019] Optionally, the first supporting structure comprises a supporting rib and a first supporting column, the supporting rib is arranged at a position of the inner bottom surface of the lower shell close to the side wall, one side of the supporting rib is fixedly connected to the inner bottom surface, and the other side is fixedly connected to the side wall of the lower shell, and a supporting plane is arranged on a side of the supporting rib close to the PCB board, and the supporting plane is arranged parallel to the inner bottom surface of the lower shell;

[0020] A plurality of the first support columns are provided, and the plurality of the first support columns are provided close to the first skirt plate, and the end faces of the first support columns and the support plane are in contact with the lower surface of the PCB board.

[0021] Optionally, the second supporting structure includes a second supporting column and a limiting cylinder, end surfaces of the second supporting column and the limiting cylinder are pressed against the upper surface of the PCB board, and the second supporting column is arranged corresponding to the first supporting column.

[0022] Optionally, a crushing rib plate is further provided on the inner bottom surface of the lower shell, and a right-angle rib is provided at a position on the upper shell corresponding to the crushing rib plate, and the right-angle rib is provided in cooperation with the crushing rib plate;

[0023] The lower shell is also provided with a connecting block, and the connecting block is provided with a connecting through hole.

[0024] It can be seen from the above technical scheme that the screwless connection controller provided by the utility model has a lower shell and an upper shell connected by a snap-on structure, the limit column is inserted into the limit through hole on the PCB board to achieve the limit of the XY direction of the PCB board, the support surface of the first support structure contacts the lower surface of the PCB board, and the support surface of the second support structure contacts the upper surface of the PCB board, thereby achieving the limit of the Z direction of the PCB board; the limit cylinder is sleeved on the limit column to achieve a reliable connection between the lower shell and the upper shell. The screwless connection controller of the utility model constrains the various degrees of freedom of the PCB board through the positioning structure and support structure of the lower shell and the upper shell, without the need to use screws for connection, reducing the total mass of the structure, reducing costs, and meeting the lightweight requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 A schematic diagram of the assembly structure of a screwless connection controller provided by an embodiment of the utility model;

[0027] Figure 2 A schematic diagram of an exploded structure of a screwless connection controller provided by an embodiment of the utility model;

[0028] Figure 3 A schematic diagram of the structure of the lower shell provided by an embodiment of the utility model;

[0029] Figure 4 A schematic diagram of the structure of an upper shell provided by an embodiment of the utility model at an angle;

[0030] Figure 5A schematic structural diagram of the upper shell provided by an embodiment of the utility model from another angle;

[0031] Figure 6 A partially enlarged structural diagram of the position of the first positioning post of the lower shell provided by an embodiment of the utility model;

[0032] Figure 7 A partially enlarged structural diagram of the second clamping structure position of the upper shell provided by an embodiment of the utility model;

[0033] Figure 8 A partially enlarged structural schematic diagram of the position of the second skirt plate of the upper shell provided in an embodiment of the utility model;

[0034] Fig. 9 A schematic diagram of the structure of a PCB board provided in an embodiment of the utility model.

[0035] in:

[0036] 1. Upper shell;

[0037] 101, second support column; 102, second skirt plate; 1021, first support protrusion; 103, right-angle rib; 104, first limiting cylinder; 105, second clamping structure; 1051, guiding inclined surface; 1052, clamping surface; 106, second limiting cylinder;

[0038] 2. Lower shell;

[0039] 201, first clamping structure; 202, supporting rib plate; 2021, supporting plane; 203, first positioning column; 2031, first side edge; 2032, crushing ridge; 2033, first supporting inclined surface; 2034, first guide surface; 204, crushing rib plate; 205, first skirt plate; 206, first supporting column; 207, second positioning column; 208, connecting block;

[0040] 3. PCB board; 301. main limit hole; 302. auxiliary limit hole; 303. connector. DETAILED DESCRIPTION

[0041] The utility model discloses a screw-free connection controller, which does not use screw connections, reduces the total mass of the structure, reduces the cost, and meets the lightweight requirements.

[0042] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0043] See also Figures 1 to 9 The screwless connection controller of the utility model comprises a lower shell 2, an upper shell 1 and a PCB board 3, wherein the PCB board 3 is installed in a chamber surrounded by the lower shell 2 and the upper shell 1. The side wall of the lower shell 2 is provided with a first clamping structure 201, and the inner bottom surface of the lower shell 2 is provided with a limiting column and a first supporting structure. The side wall of the upper shell 1 is provided with a second clamping structure 105, and the inner top surface of the upper shell 1 is provided with a limiting cylinder and a second supporting structure. A limiting through hole is provided on the plate body of the PCB board 3. The second clamping structure 105 is clamped correspondingly to the first clamping structure 201. The limiting column is inserted into the limiting through hole to limit the XY direction of the PCB board 3, and the limiting cylinder is sleeved on the limiting column to achieve reliable connection between the lower shell 2 and the upper shell 1. The supporting surface of the first supporting structure contacts the lower surface of the PCB board 3, and the supporting surface of the second supporting structure contacts the upper surface of the PCB board 3, thereby limiting the Z direction of the PCB board 3.

[0044] The lower shell 2 is a shell with a sealed bottom and an open top, and the upper shell 1 is a shell with an open bottom and a sealed top. The limiting cylinder is arranged correspondingly to the limiting column, and the limiting through hole is arranged correspondingly to the limiting column.

[0045] The screwless connection controller of the utility model has a lower shell 2 and an upper shell 1 connected by a snap-on structure, the limiting column is inserted into the limiting through hole on the PCB board 3 to limit the XY direction of the PCB board 3, the supporting surface of the first supporting structure contacts the lower surface of the PCB board 3, and the supporting surface of the second supporting structure contacts the upper surface of the PCB board 3, thereby limiting the Z direction of the PCB board 3; the limiting cylinder is sleeved on the limiting column to achieve a reliable connection between the lower shell 2 and the upper shell 1. The screwless connection controller of the utility model constrains the PCB board 3 in various degrees of freedom through the positioning structure and supporting structure of the lower shell 2 and the upper shell 1, without the need for screw connection, reducing the total mass of the structure, reducing the cost, and meeting the lightweight requirements.

[0046] In order to prevent the setting of the limiting column from affecting the normal operation of the functional area on the PCB board 3, the limiting column is set at a position close to the side wall of the inner bottom surface of the lower shell 2, that is, the limiting column is set at the edge of the inner bottom surface. In order to ensure the reliability of the limiting, the limiting column includes a first positioning column 203 and a second positioning column 207. The first positioning column 203 and the second positioning column 207 are respectively set at the two ends of the diagonal line of the inner bottom surface of the lower shell 2, such as Figure 3 shown.

[0047] In order to ensure the reliability of positioning, the first positioning column 203 includes a plurality of first side edges 2031 arranged around the axis, such as Figure 6As shown, a plurality of first side edges 2031 are arranged perpendicular to the inner bottom surface of the lower shell 2. In order to facilitate supporting the PCB board 3, the first side edge 2031 includes a first guide surface 2034 and a first support inclined surface 2033 arranged to intersect on the side away from the axis of the first positioning column 203. The first support inclined surface 2033 is arranged close to the inner bottom surface of the lower shell 2, and the first guide surface 2034 is arranged away from the inner bottom surface of the lower shell 2. The first guide surface 2034 is arranged perpendicular to the inner bottom surface. The angle between the first guide surface 2034 and the first support inclined surface 2033 is an obtuse angle, and the position of the first support inclined surface 2033 close to the first guide surface 2034 is used to support the PCB board 3. In order to improve the positioning accuracy of the first positioning column 203 on the PCB board 3, a crushing ridge 2032 is arranged at the intersection of the first guide surface 2034 and the first support inclined surface 2033.

[0048] Similarly, the second positioning column 207 includes a plurality of second side edges arranged around the axis, and a plurality of the second side edges are arranged perpendicular to the inner bottom surface of the lower shell 2. The second side edge away from the axis of the second positioning column 207 includes a second guide surface and a second supporting inclined surface arranged to intersect with each other on the side surface, and the second supporting inclined surface is arranged close to the inner bottom surface. The specific structural setting refers to the first positioning column 203. The difference between the two is that the second positioning column 207 is not provided with a crushed rib structure to facilitate the installation of the PCB board 3.

[0049] The limiting cylinder includes a first limiting cylinder 104 and a second limiting cylinder 106. Figure 4 The first limiting cylinder 104 is provided corresponding to the first positioning column 203 , and the first limiting cylinder 104 is sleeved on the first positioning column 203 ; the second limiting cylinder 106 is provided corresponding to the second positioning column 207 , and the second limiting cylinder 106 is sleeved on the second positioning column 207 .

[0050] Specifically, the limiting through hole includes a main limiting hole 301 and an auxiliary limiting hole 302. Fig. 9 As shown, the main limiting hole 301 is a circular hole, which is arranged corresponding to the first positioning column 203, and the auxiliary limiting hole 302 is an oblong hole, which is arranged corresponding to the second positioning column 207. The crushed ribs 2032 around the first positioning column 203 are interference-fitted with the main limiting hole 301, which plays a role in precise positioning, and the auxiliary limiting hole 302 is clearance-fitted with the second positioning column 207 and is arranged as an oblong hole, which makes up for the dimensional error in the component assembly process, plays an auxiliary positioning role, and constrains the freedom of the PCB board 3 in the XY direction.

[0051] In one embodiment, the first clamping structure 201 includes a cantilever plate, such as Figure 6 As shown, the cantilever plate is fixedly mounted on the top of the side wall of the lower shell 2, and a slot 2011 is arranged on the surface of the cantilever plate for engaging with the second engaging structure 105. The second engaging structure 105 includes an engaging surface 1052, such as Figure 7 As shown, the opening end of the clamping surface 1052 near the upper shell 1 is provided with a guiding inclined surface 1051, and the setting of the guiding inclined surface 1051 facilitates the second clamping structure 105 to smoothly enter the clamping slot 2011. The clamping surface 1052 is arranged parallel to the bottom surface of the lower shell 2, and the clamping surface 1052 contacts the groove side of the clamping slot 2011 to achieve clamping. Specifically, the upper shell 1 and the lower shell 2 are both rectangular shells. In order to ensure the reliable connection between the upper shell 1 and the lower shell 2, the first clamping structure 201 is arranged on the three side walls of the lower shell 2, and the fourth side wall of the lower shell 2 is used to support the connector 303 on the PCB board 3.

[0052] In order to protect the connector 303 on the PCB board 3, a first skirt plate 205 for supporting the connector 303 on the PCB board 3 is provided on one side wall of the lower shell 2. The first skirt plate 205 is provided perpendicular to the side wall of the lower shell 2. The first skirt plate 205 is provided on the outside of the side wall of the lower shell 2, and is used to support the connector 303 extending out of the inner cavity of the lower shell 2. A second skirt plate 102 for surrounding the connector 303 on the PCB board 3 is provided on one side wall of the upper shell 1. The second skirt plate 102 is provided perpendicular to the side wall of the upper shell 1. The second skirt plate 102 is provided on the outside of the side wall of the upper shell 1, and includes a skirt main body plate and a skirt side plate which are integrally connected. The skirt main body plate is provided parallel to the first skirt plate 205, and the skirt side plate is provided perpendicular to the skirt main body plate. Figure 4 As shown. The first skirt board 205 and the second skirt board 102 cooperate to surround the connector 303 on the PCB board 3, and the connector 303 is supported and protected. The connector 303 includes a plurality of sockets, and gaps are provided between different sockets. In order to improve the support stability of the connector 303, a first supporting protrusion 1021 is provided on the surface of the second skirt board 102 close to the connector 303. The first supporting protrusion 1021 is provided corresponding to the gap between the sockets, and the first supporting protrusion 1021 is plugged into the side of the gap close to the second skirt board 102. Similarly, a second supporting protrusion is provided on the surface of the first skirt plate 205 close to the connector 303, and the gap between the second supporting protrusion and the socket is provided correspondingly. The second supporting protrusion is inserted into the side of the gap close to the first skirt plate 205. By providing the first supporting protrusion 1021 and the second supporting protrusion, the connection reliability of each socket of the connector 303 is further guaranteed, the service life of the connector 303 is extended, and the connector 303 is effectively prevented from being damaged by collision during transportation.

[0053] The first supporting structure of the lower shell 2 includes a supporting rib plate 202 and a first supporting column 206. The supporting rib plate 202 is arranged at a position close to the side wall of the inner bottom surface of the lower shell 2. One side of the supporting rib plate 202 is fixedly connected to the inner bottom surface, and the other side is fixedly connected to the side wall of the lower shell 2. A supporting plane 2021 is arranged on the side of the supporting rib plate 202 close to the PCB board 3. The supporting plane 2021 is arranged parallel to the inner bottom surface of the lower shell 2 and is used to support the lower surface of the PCB board 3. It can be understood that there are multiple supporting rib plates 202, and the heights of the supporting planes 2021 of the multiple supporting rib plates 202 are the same. There are a plurality of first supporting columns 206, and the multiple first supporting columns 206 are arranged close to the first skirt plate 205. The end faces and the supporting plane 2021 of the first supporting columns 206 are in contact with the lower surface of the PCB board 3, forming a stable support for the PCB board 3. The first support column 206 is disposed near one side of the first skirt plate 205, and the support rib plate 202 is disposed beside the other three side walls of the lower shell 2. In one embodiment, four first support columns 206 are disposed, wherein three first support columns 206 are disposed near the side wall where the first skirt plate 205 is disposed, and another first support column 206 is disposed near the middle position of the inner bottom surface of the lower shell 2.

[0054] Furthermore, the second support structure includes a second support column 101 and a limiting cylinder. The end of the second support column 101 and the end face of the limiting cylinder are pressed on the upper surface of the PCB board 3 to limit the PCB board 3. Specifically, the second support column 101 is set correspondingly to the first support column 206. The corresponding setting here means that the setting positions are corresponding and the setting numbers are the same. The limiting cylinder includes a first limiting cylinder 104 and a second limiting cylinder 106. After the upper shell 1 is buckled, the cylinder ends of the first limiting cylinder 104 and the second limiting cylinder 106 face the Z-direction limiting of the PCB board 3. The first support column 206 and the second support column 101 are both cross support columns.

[0055] In order to further ensure the reliability of the connection between the upper shell 1 and the lower shell 2, a compression rib plate 204 is also provided on the inner bottom surface of the lower shell 2, and a right-angle rib 103 is provided at a position corresponding to the compression rib plate 204 on the upper shell 1. When the upper shell 1 is buckled on the lower shell 2, the side of the right-angle rib 103 will crush the side of the compression rib plate 204.

[0056] In order to facilitate fixing the controller, a connecting block 208 is also provided on the lower shell 2. Figure 6 As shown, the connection block 208 is provided with a connection through hole.

[0057] The upper shell 1 and the lower shell 2 of the screwless connection controller of the utility model are both injection molded parts. The screwless connection controller of the utility model makes full use of the plasticity of the injection molded parts themselves, and the buckle structure of the shell itself realizes the three-in-one assembly, fixing and protection functions, with a small number of parts, low material cost, easy installation and low production cost. The shell has its own positioning structure and supporting structure to constrain the various degrees of freedom of multiple connectors and PCB boards with a large length, without the need to introduce screws, reducing the mass of the assembly, reducing costs and meeting the requirements of lightweight design.

[0058] When installing the screwless connection controller of the utility model, align the main limit hole 301 of the PCB board 3 with the center of the first positioning column 203 of the lower shell 2, align the auxiliary limit hole 302 with the center of the second positioning column 207 of the lower shell 2, and introduce the PCB board 3 through the two positioning columns. Gently press down the PCB board 3 with both hands to make the crushed ridge 2032 around the first positioning column 203 and the main limit hole 301 interference fit, play a role in precise positioning, and the auxiliary limit hole 302 and the second positioning column 207 of the lower shell 2 are clearance fit, play an auxiliary positioning role, and constrain the freedom of the XY direction of the PCB board 3. At this time, the support plane 2021 of the support rib plate 202 of the lower shell 2 and the first support column 206 are in contact with the lower surface of the PCB board 3, playing a supporting role. Then, align the first limiting cylinder 104 of the upper shell 1 with the center of the first positioning column 203, align the second limiting cylinder 106 of the upper shell 1 with the center of the second positioning column 207, and press them together with hands or a jig. At the same time, the first clip structure 201 and the second clip structure 105 are snapped together, and all the clips are snapped into place to complete the assembly of the controller assembly.

[0059] When the pressing is completed, the end faces of the second support column 101 of the upper shell 1, the end faces of the first limiting cylinder 104, and the end faces of the second limiting cylinder 106 are all in contact with the upper surface of the PCB board 3, and work together with the support ribs 202 and the first support column 206 of the lower shell 2 to constrain the freedom of the PCB board 3 in the Z direction. During the pressing process, the crushing ribs 204 will be crushed under the action of the right-angle ribs 103, while compensating for the dimensional tolerance and increasing the constraint amplitude on the PCB board 3.

[0060] In the description of this solution, it should be understood that the terms "upper", "lower", "vertical", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this solution.

[0061] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this solution, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0062] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments, and the same and similar parts between the embodiments can be referred to each other. The above description of the disclosed embodiments enables professionals and technicians in this field to implement or use the utility model. Various modifications to these embodiments will be obvious to professionals and technicians in this field, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the utility model. Therefore, the utility model will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features disclosed herein.

Claims

1. A screwless connection controller, characterized in that: include: A lower shell, wherein the side wall of the lower shell is provided with a first clamping structure, and the inner bottom surface of the lower shell is provided with a limiting column and a first supporting structure; An upper shell, wherein the side wall of the upper shell is provided with a second clamping structure, and the inner top surface of the upper shell is provided with a limiting cylinder and a second supporting structure; A PCB board, wherein a plate body of the PCB board is provided with a limited through hole; The second clamping structure is correspondingly clamped with the first clamping structure, the limiting cylinder is sleeved on the limiting column, and the limiting column is inserted into the limiting through hole; the supporting surface of the first supporting structure contacts the lower surface of the PCB board, and the supporting surface of the second supporting structure contacts the upper surface of the PCB board.

2. The screwless connection controller according to claim 1, characterized in that: The limiting column is arranged at a position of the inner bottom surface of the lower shell close to the side wall, and the limiting column includes a first positioning column and a second positioning column, and the first positioning column and the second positioning column are respectively arranged at two ends of a diagonal line of the inner bottom surface of the lower shell.

3. The screwless connection controller according to claim 2, characterized in that: The first positioning column includes a plurality of first side edges arranged around the axis, the plurality of first side edges are arranged perpendicular to the inner bottom surface of the lower shell, the first side edge away from the axis of the first positioning column includes a first guide surface and a first support inclined surface arranged to intersect, the first support inclined surface is arranged close to the inner bottom surface, and a crushing ridge is arranged at the intersection of the first guide surface and the first support inclined surface; The second positioning column includes a plurality of second side edges arranged around the axis, and a plurality of the second side edges are arranged perpendicular to the inner bottom surface of the lower shell. The side surface of the second side edge away from the axis of the second positioning column includes a second guide surface and a second supporting inclined surface that are intersectingly arranged, and the second supporting inclined surface is arranged close to the inner bottom surface.

4. The screwless connection controller according to claim 2, characterized in that: The limiting cylinder includes a first limiting cylinder and a second limiting cylinder. The first limiting cylinder is arranged corresponding to the first positioning column, and the second limiting cylinder is arranged corresponding to the second positioning column.

5. The screwless connection controller according to claim 2, characterized in that: The limiting through hole includes a main limiting hole and an auxiliary limiting hole. The main limiting hole is a circular hole, which is arranged corresponding to the first positioning column, and the auxiliary limiting hole is an oblong hole, which is arranged corresponding to the second positioning column.

6. The screwless connection controller according to claim 1, characterized in that: The first clamping structure comprises a cantilever plate, the cantilever plate is fixedly arranged on the top of the side wall of the lower shell, and a clamping groove is arranged on the surface of the cantilever plate used for clamping with the second clamping structure; The second clamping structure comprises a clamping surface, a guiding inclined surface is arranged at an opening end of the clamping surface close to the upper shell, and the clamping surface is clamped with the clamping slot.

7. The screwless connection controller according to claim 1, characterized in that: A first skirt plate for supporting the connector on the PCB is disposed on one side of the lower shell, and a second skirt plate for surrounding the connector on the PCB is disposed on one side of the upper shell. The first skirt plate and the second skirt plate are cooperatively arranged around the connector on the PCB.

8. The screwless connection controller according to claim 7, characterized in that: The first supporting structure comprises a supporting rib and a first supporting column, wherein the supporting rib is arranged at a position close to the side wall of the inner bottom surface of the lower shell, one side surface of the supporting rib is fixedly connected to the inner bottom surface, and the other side surface is fixedly connected to the side wall of the lower shell, and a supporting plane is arranged on one side of the supporting rib close to the PCB board, and the supporting plane is arranged parallel to the inner bottom surface of the lower shell; A plurality of the first support columns are provided, and the plurality of the first support columns are provided close to the first skirt plate, and the end faces of the first support columns and the support plane are in contact with the lower surface of the PCB board.

9. The screwless connection controller according to claim 8, characterized in that: The second supporting structure includes a second supporting column and a limiting cylinder. The end surfaces of the second supporting column and the limiting cylinder are pressed on the upper surface of the PCB board. The second supporting column is arranged corresponding to the first supporting column.

10. The screwless connection controller according to claim 1, characterized in that: A crushing rib plate is also provided on the inner bottom surface of the lower shell, and a right-angle rib is provided at a position corresponding to the crushing rib plate on the upper shell, and the right-angle rib is provided in cooperation with the crushing rib plate; The lower shell is also provided with a connecting block, and the connecting block is provided with a connecting through hole.

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