CN212115857U

CN212115857U - Controller

Info

Publication number: CN212115857U
Application number: CN202020638458.0U
Authority: CN
Inventors: 刘双林
Original assignee: TIANJIN SANTROLL ELECTRIC SCIENCE & TECHNOLOGY CO LTD
Current assignee: TIANJIN SANTROLL ELECTRIC SCIENCE & TECHNOLOGY CO LTD
Priority date: 2020-04-24
Filing date: 2020-04-24
Publication date: 2020-12-08
Anticipated expiration: 2030-04-24

Abstract

The utility model relates to an electronic control technical field discloses a controller, including the shell and locate printed circuit board, power part, heat-conducting part and flexure strip in it, pass printed circuit board and butt in one side of power part face towards printed circuit board with the elasticity butt portion of flexure strip, can dismantle the connection in the inner wall of shell with the flexure strip to make elasticity butt portion can take place elastic deformation and all press from both sides with power part and heat-conducting part and locate between shell inner wall and the printed circuit board, realized elastic contact between power part and the heat-conducting part. Even if the elastic sheet is gradually aged under the cold and hot impact when the working state of the power component is continuously switched, the heat-conducting component and the power component can be always clamped between the inner wall of the shell and the printed circuit board by utilizing the elastic sheet, so that the heat-conducting component can conduct normal heat conduction on the power component; the heat generated by the work of the power component is transferred to the external atmosphere through the heat conducting component and the lower shell, so that the heat transfer path is shortened, and the heat dissipation efficiency is improved.

Description

Controller

Technical Field

The utility model relates to an electronic control technical field especially relates to a controller.

Background

A conventional controller mainly includes a printed circuit board and a power component soldered to the printed circuit board, and a power module generates a large amount of heat during the use of the controller. In order to ensure that the normal operation of the power component is not affected by overheating, a heat conduction structure is generally configured for the power component to conduct heat to ensure that the power component can operate normally.

In the prior art, the power component is disposed on the front surface of the printed circuit board, and the power component is tightly attached to the heat conducting structure through the fixing structure. With long-term use, the fixing structure for connecting the power component and the heat conducting structure can be gradually aged under the impact of cold and heat, and particularly for a controller applied to a scene with stronger vibration, such as an electric vehicle, the gradually aged fixing structure is easy to separate from the power component in the process of continuous vibration of the vehicle in the driving process, so that the heat conducting efficiency of the power component is greatly reduced, and the service life of the controller is shortened.

Therefore, a controller is needed to solve the above technical problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a controller can solve because of the ageing problem that leads to power part and the very easy separation of heat conduction structure of fixed knot structure to guarantee power part's heat conduction efficiency improves the life of controller.

To achieve the purpose, the utility model adopts the following technical proposal:

a controller, includes the shell and locates the printed circuit board in the shell, still including locating in the shell:

the power component is arranged on one side of the printed circuit board and is welded with the printed circuit board;

the heat conduction component is arranged on one side of the power component, which is back to the printed circuit board, and is tightly attached to the power component;

the elastic sheet is detachably connected to the shell, an elastic abutting portion is arranged on the elastic sheet, and one end of the elastic abutting portion penetrates through the printed circuit board and can be elastically deformed so as to clamp the power component and the heat conduction component between the inner wall of the shell and the printed circuit board.

The utility model discloses pass printed circuit board and butt in one side of power part face towards printed circuit board with the elasticity butt portion of flexure strip, can dismantle the connection in the inner wall of shell simultaneously with the flexure strip to make elasticity butt portion can take place elastic deformation and all press from both sides the inner wall of locating the shell with power part and heat-conducting component and printed circuit board between, realized the elastic contact between power part and the heat-conducting component through the flexure strip. Even if the elastic sheet can age gradually under the cold and hot impact when the working state of the power component is switched continuously, the elastic sheet can still be utilized to enable the heat-conducting component and the power component to be clamped between the inner wall of the shell and the printed circuit board all the time, the heat-conducting component is effectively prevented from being separated from the power component, the heat-conducting component can conduct heat normally to the power component, and the service life of the power component is prolonged.

The utility model discloses utilize the flexure strip to make heat-conducting component and power component all press from both sides and locate between the inner wall of shell and the printed circuit board, the heat that power component work produced will be through heat-conducting component and lower casing transmission to external atmosphere, has shortened the heat transfer way, improves the radiating efficiency.

As a preferable embodiment of the controller, the power component is provided on a back surface of the printed circuit board.

As a preferable technical solution of the above controller, the power component is disposed parallel to the printed circuit board, and the heat conducting component completely covers a side of the power component opposite to the printed circuit board.

As a preferred technical solution of the above controller, a plurality of pins are disposed on the power component, one end of each pin, which is not connected to the power component, is bent toward the printed circuit board to form a bent portion, and the bent portion is welded to the printed circuit board;

and two adjacent bending parts on the same power component are arranged in a staggered manner.

As a preferable technical solution of the above controller, the power components are provided with at least two;

the pins between the two power components are arranged just opposite to each other, and the distances between the bending parts of the pins which are arranged just opposite to each other are equal.

As a preferable aspect of the controller, at least one pair of the elastic abutting portions is provided, and each pair of the elastic abutting portions is provided on opposite sides of the power component.

As a preferable mode of the controller, each pair of the elastic abutting portions is provided to be gradually expanded in a direction away from the elastic piece.

As a preferred technical solution of the above controller, the printed circuit board is provided with a hollow for penetrating the elastic abutting portion.

As a preferable technical solution of the controller, the elastic piece is connected to the housing by a first fastening member.

The utility model has the advantages that: the utility model discloses pass printed circuit board and butt in one side of power part face towards printed circuit board with the elasticity butt portion of flexure strip, can dismantle the connection in the inner wall of shell simultaneously with the flexure strip to make elasticity butt portion can take place elastic deformation and all press from both sides the inner wall of locating the shell with power part and heat-conducting component and printed circuit board between, realized the elastic contact between power part and the heat-conducting component through the flexure strip. Even if the elastic sheet can age gradually under the cold and hot impact when the working state of the power component is switched continuously, the elastic sheet can still be utilized to enable the heat-conducting component and the power component to be clamped between the inner wall of the shell and the printed circuit board all the time, the heat-conducting component is effectively prevented from being separated from the power component, the heat-conducting component can conduct heat normally to the power component, and the service life of the power component is prolonged.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a controller according to an embodiment of the present invention;

fig. 2 is a usage state diagram of a controller provided by the embodiment of the present invention;

fig. 3 is an exploded view of a controller provided by an embodiment of the present invention;

fig. 4 is a schematic front view of a printed circuit board according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a first integrated interface terminal according to another embodiment of the present invention;

fig. 6 is a schematic structural diagram of a second integrated interface terminal according to another embodiment of the present invention;

fig. 7 is a diagram illustrating a position relationship between a pad and a socket on a printed circuit board according to an embodiment of the present invention;

fig. 8 is a schematic back view of a printed circuit board according to an embodiment of the present invention;

fig. 9 is a partially enlarged schematic view at a in fig. 8.

In the figure:

1. a printed circuit board; 11. a front side; 12. a back side; 13. hollowing out; 14. a pad; 15. a jack;

21. an upper housing; 211. a clamping hole; 212. pouring a glue opening; 22. a lower housing; 221. connecting columns; 222. clamping convex; 23. a cover plate; 24. wire clamps; 25. identifying;

3. an integrated interface terminal; 30. inserting a pin; 31. a connecting portion; 32. a plug-in part; 33. a second fastener; 34. mounting lugs;

4. a power component; 41. a stitch; 42. a bending part;

5. an elastic sheet; 51. an elastic abutting portion; 52. a first fastener;

6. a heat conductive member;

71. an external terminal; 72. a wire harness.

Detailed Description

In order to make the technical problem solved by the present invention, the technical solution adopted by the present invention and the technical effect achieved by the present invention clearer, the technical solution of the present invention will be further explained by combining the drawings and by means of the specific implementation manner. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some but not all of the elements related to the present invention are shown in the drawings.

Fig. 1 is a schematic structural diagram of a controller provided in this embodiment, fig. 2 is a usage state diagram of the controller provided in this embodiment, fig. 3 is an exploded view of the controller provided in this embodiment, and fig. 4 is a schematic front view of a printed circuit board. As shown in fig. 1 to 4, the present embodiment provides a controller, and the present embodiment takes a controller applied to a shared bicycle as an example. The controller comprises a printed circuit board 1 and two integrated interface terminals 3, and in other embodiments, the number of the integrated interface terminals 3 may be one or three or more, and may be determined according to actual requirements.

The integrated interface terminal 3 comprises a connecting part 31 and a pin 30 which penetrates through the connecting part 31 and is integrated with the connecting part 31, the connecting part 31 is of a groove structure with one open end, an inserting part 32 is convexly arranged on the inner bottom wall of the groove structure, a counter bore is arranged on the inserting part 32, the pin 30 axially penetrates through the inserting part 32 along the counter bore, a sealing groove is arranged on the inner wall of the counter bore of the inserting part 32, and a sealing ring is arranged in the sealing groove; a sealing groove may be formed in the outer wall of the insertion portion 32, and a sealing ring may be installed in the sealing groove. Specifically, the sealing ring can be arranged according to the plugging requirement of the plugging portion 32 and the external terminal 71, and is not limited to one by one, and the sealing ring can be an O-ring or the like. The plug-in part 32 and the external terminal 71 which is plugged in the plug-in part are in interference fit, the contact surface between the plug-in part and the external terminal 71 is used for sealing, the sealing performance of the integrated interface terminal 3 when the integrated interface terminal is plugged in the external terminal 71 is improved through the sealing ring and the interference fit, and therefore the integrated interface terminal has a waterproof function and can achieve the waterproof grade of IP 67. When the controller is applied to the shared bicycle, the controller can adapt to complex weather changes, and the service life of the controller is prolonged.

The connection portion 31 is made of rubber, and when the external terminal 71 is inserted into the insertion portion 32 so that the pin 30 is inserted into the external terminal 71, the pin 30 can be protected from water by the interference fit between the seal ring and the integrated interface terminal 3 and the external terminal 71.

In this embodiment, the pin 30, the connecting portion 31 and the inserting portion 32 are molded to form the integrated interface terminal 3 integrally, so that the required integrated interface terminal 3 can be customized according to actual requirements; meanwhile, the integrated interface terminal 3 is adopted to replace a conventional wiring harness, the traditional wire plugging process is replaced, one integrated interface terminal 3 and the printed circuit board 1 only need to be plugged once, the probability of missing plugging or wrong plugging of the contact pin 30 is reduced, the production efficiency of the controller is greatly improved, the labor cost is reduced, and the reject ratio of the controller is reduced; meanwhile, the integrated interface terminal 3 is adopted, so that a conventional exposed wire harness is eliminated, and the space occupied by the internal structural part of the controller is reduced, so that the size of the controller is reduced.

Fig. 5 and fig. 6 are schematic structural diagrams of a first integrated interface terminal and a second integrated interface terminal provided in other embodiments, respectively, as shown in fig. 5 and fig. 6, in other embodiments, the connecting portion 31 may also be a flat plate structure, and the inserting portion 32 is protruded at one side of the flat plate structure, specifically, the inserting portion 32 is protruded at one side of the flat plate structure opposite to the inner wall of the housing.

Further, the controller further comprises a shell, the shell comprises an upper shell 21 and a lower shell 22, the upper shell 21 and the lower shell 22 are connected to form a mounting cavity, and the printed circuit board 1 is arranged in the mounting cavity. In this embodiment, the upper casing 21 and the lower casing 22 are detachably connected, preferably, the upper casing 21 and the lower casing 22 are clamped, specifically, the upper casing 21 is provided with a plurality of clamping holes 211 arranged along the circumferential direction of the upper casing, the outer wall of the lower casing 22 is provided with clamping protrusions 222 corresponding to the clamping holes 211 one to one, and the clamping protrusions 222 are inserted into the corresponding clamping holes 211, that is, the upper casing 21 is clamped to the lower casing 22.

In this embodiment, eight locking protrusions 222 are provided, two locking protrusions 222 are provided on each side wall of the lower casing 22, and the locking protrusions 222 provided on the two opposite side walls of the lower casing 22 are symmetrically provided. It should be noted that the number of the locking protrusions 222 is not limited to eight, and one locking protrusion 222 or three or more locking protrusions 222 may be disposed on each side wall of the lower casing 22, and the number of the locking protrusions 222 on each side wall of the lower casing 22 may be equal or unequal, and preferably, the number of the locking protrusions 222 on the two opposite side walls is set to be equal and symmetrically. The locking protrusion 222 may be provided only on one of the opposite sidewalls of the lower case 22. In other embodiments, the upper case 21 may be provided with a locking protrusion 222, and the lower case 22 may be provided with a locking hole 211 locked with the locking protrusion 222. In other embodiments, the upper housing 21 and the lower housing 22 may be connected by a fastener such as a screw or a bolt, and it should be noted that the connection between the upper housing 21 and the lower housing 22 is not limited to the detachable connection defined in this embodiment, and the upper housing 21 and the lower housing 22 may also be fixedly connected by gluing, ultrasonic welding, or hot melting, and thus, detailed descriptions thereof are omitted.

In this embodiment, the two integrated interface terminals 3 are respectively denoted as a first integrated interface terminal and a second integrated interface terminal, the first integrated interface terminal is integrated with a motor plug-in unit and a power plug-in unit, and the second integrated interface terminal is integrated with a pedal frequency plug-in unit, a tail lamp plug-in unit, a battery lock plug-in unit and a central control plug-in unit. The upper housing 21 is provided with the marks 25 corresponding to the plugging portions 32 one by one, which are used for explaining which external terminal plugging portion 32 the plugging portion 32 is specifically used for connecting, so that a user can conveniently plug the external terminal 71 with the corresponding plugging portion 32. The number of the insertion portions 32 provided in each of the first integrated interface terminal and the second integrated interface terminal is not limited to the above number, and may be three, five or more, and may be specifically provided according to actual needs, and will not be described herein.

Further, the integrated interface terminal 3 is provided with mounting ears 34 on opposite sides thereof, and specifically, two mounting ears 34 are provided on opposite sides of the connecting portion 31, and the mounting ears 34 are connected to the upper housing 21 by second fastening members 33 such as screws or the like. In this embodiment, the mounting ears 34 of the first integrated interface terminal are disposed at both ends of the first integrated interface terminal in the length direction, and the mounting ears 34 of the second integrated interface terminal are disposed at both ends of the second integrated interface terminal in the width direction. In other embodiments, four mounting lugs 34 or more mounting lugs 34 may be provided for each integrated interface terminal 3, and may be specifically determined according to the size of the integrated interface terminal 3, so as to ensure the stability of the connection between the integrated interface terminal 3 and the upper housing 21.

This embodiment is with last casing 21 and lower casing 22 joint, and integrated interface terminal 3 and last casing 21 interference fit, connects integrated interface terminal 3 in last casing 21 through second fastener 33 simultaneously, when external terminal 71 of plug, can prevent to apply to external force messenger printed circuit board 1 upper and lower removal of external terminal 71 to electronic parts on the protection printed circuit board 1 are difficult to extrude and produce deformation with last casing 21 or lower casing 22. In other embodiments, the integrated interface terminal 3 may be detachably connected to the upper housing 21 by using a clamping connection or the like; the integrated interface terminal 3 may be connected to the upper housing 21 by gluing, welding, or the like.

Further, two integrated interface terminals 3 are provided at opposite ends of the printed circuit board 1. Preferably, the two integrated interface terminals 3 are disposed at two ends of the upper housing 21 in the length direction, and the distance between the two integrated interface terminals 3 is increased as much as possible to solve the problem that the large current of the power plug part affects the signal transmission of the other plug part 32.

Further, fig. 7 is a positional relationship diagram of pads and sockets on the printed circuit board provided in this embodiment, as shown in fig. 4 and 7, the front surface 11 of the printed circuit board 1 is provided with pads 14 corresponding to the pins 30 one to one, each pad 14 is provided with a socket 15 penetrating through the printed circuit board 1, the pins 30 are inserted into the corresponding sockets 15 and soldered to the pads 14, and the pins 30 are coaxially arranged with the corresponding sockets 15. Preferably, the pins 30 are soldered to the corresponding pads 14 using wave soldering.

Further, the minimum distance between two adjacent pads 14 is greater than or equal to 0.2mm, the minimum distance between the central axes of two adjacent sockets 15 is greater than or equal to 1.6mm, and the distance that each pin 30 extends out of the back surface 12 of the printed circuit board 1 is less than or equal to 0.5 mm.

In the embodiment, on the premise of not changing the center distance between two adjacent insertion holes 15 and the radius of the insertion holes 15, the minimum distance between two adjacent bonding pads 14 is increased, so that the problem that two corresponding contact pins 30 are easily welded together due to the fact that the distance between two adjacent insertion holes 15 is too small is solved; in addition, in the embodiment, the distance that each pin 30 extends out of the back surface 12 of the printed circuit board 1 is less than or equal to 0.5mm, so as to reduce the length that the pin 30 extends out of the back surface 12 of the printed circuit board 1, thereby further reducing the probability that two adjacent pins 30 are subjected to continuous welding during welding, and effectively reducing the reject ratio of the controller.

In this embodiment, the minimum area of the bonding pad 14 is 0.5mm or more²It was found through experimentation that the minimum area at the pad 14 was less than 0.5mm²When the contact pin 30 corresponding to two adjacent bonding pads 14 is welded, the problem of welding is easy to occur, and the minimum area of the control bonding pad 14 is set to be more than or equal to 0.5mm²The probability of the problem of continuous welding when the contact pins 30 corresponding to the two adjacent bonding pads 14 are welded can be effectively reduced, so that the qualification rate of the controller is improved.

It should be noted that, in order not to change the center distance between two adjacent insertion holes 15 and the radius between the insertion holes 15, as shown in fig. 7, the pad 14 is shaped by changing the shape of the pad 14 in the present embodiment, so as to increase the minimum distance between two adjacent pads 14. The shape of each pad 14 may be set according to practical conditions, and the embodiment is not particularly limited.

Further, as shown in fig. 1 and 2, the outer wall of the upper housing 21 is provided with a clip 24 for limiting a wire harness 72 connected to an external terminal 71 inserted into the integrated interface terminal 3. In this embodiment, the wire clips 24 and the insertion portions 32 are arranged in one-to-one correspondence. The wire clamp 24 can prevent the wire harness 72 connected with the external terminal 71 from frequently shaking due to vibration when the wire clamp is applied to a controller of a shared bicycle, so that the external terminal 71 is separated from the integrated interface terminal 3 or is connected in a virtual mode or in a short mode. In other embodiments, one clip 24 may be associated with two or more plug portions 32, that is, one clip 24 may be used to simultaneously limit the wire harness 72 connected to the external terminals 71 of two or more plug portions 32.

Further, in the prior art, the power component 4 is disposed on the front surface 11 of the printed circuit board 1, and the power component 4 is disposed perpendicular to the printed circuit board 1. However, the height of the entire controller is increased by making the power unit 4 too high. For this reason, the present embodiment solders the power component 4 to the back surface 12 of the printed circuit board 1 without occupying the space of the front surface 11 of the printed circuit board 1, and arranges the power component 4 in parallel with the printed circuit board 1, thereby reducing the height of the entire controller.

Further, fig. 8 is a schematic diagram of a back surface of the printed circuit board provided in the present embodiment, and fig. 9 is a schematic diagram of a partial enlargement at a in fig. 8. As shown in fig. 8 and 9, the power component 4 is provided with a plurality of pins 41, one end of each pin 41, which is not connected to the power component 4, is bent toward the side of the printed circuit board 1 to form a bent portion 42, the bent portion 42 is welded to the printed circuit board 1, and two adjacent bent portions 42 on the same power component 4 are arranged in a staggered manner; the pins 41 between the two power components 4 are oppositely arranged and the distance between the bent parts 42 of the oppositely arranged pins 41 is equal.

Specifically, in the present embodiment, six power components 4 are provided, and are divided into two rows, three power components 4 are distributed in each row, the two rows of power components 4 are symmetrically arranged, the bending portions 42 of the same power component 4 are arranged in a staggered manner, and the distances between the bending portions 42 of the power components 4 facing each other in the two rows of power components 4 are equal. It should be noted that one, two, three or more power components 4 may be provided, and the number of the power components 4 may be set according to actual requirements.

This embodiment is through the crisscross setting of two adjacent portions 42 of bending with same power component 4 to the stitch 41 that will be located between two power components 4 is just setting up and just equal to the interval between the portion 42 of bending of the stitch 41 that sets up, realizes adopting the crisscross design of portion 42 of bending, with the wiring of optimizing printed circuit board 1, has reduced the risk of circuit interference, has avoided the local calorific capacity of stitch 41 too big and has caused the influence to the performance of controller.

In other embodiments, the pins 41 of each row of power components 4 may be arranged on the same side, at this time, one power component 4 is spaced between the pins 41 of the power components 4 that are arranged opposite to each other in the two rows of power components 4, and the bent portions 42 corresponding to the plurality of pins 41 of each power component 4 may be arranged in a staggered manner.

Further, as shown in fig. 3, a side of the power component 4 facing away from the printed circuit board 1 is provided with a heat conduction member 6, the heat conduction member 6 completely covers a side of the power component 4 facing away from the printed circuit board 1, and the heat conduction member 6 is interposed between the power component 4 and the inner bottom wall of the lower case 22. The heat conductive member 6 is made of a material having a heat conductive property, the power component 4 is thermally conductive through the heat conductive member 6, and the power component 4 is disposed in parallel with the printed circuit board 1. The heat conducting member 6 in this embodiment is a plate-shaped structure, and the side of the power component 4 opposite to the printed circuit board 1 is completely covered by the heat conducting member 6, so that the contact area between the heat conducting member 6 and the power component 4 can be increased, and the heat generated by the power component 4 is transferred to the outside through the heat conducting member 6 and the lower shell 22 in contact with the heat conducting member, thereby improving the heat dissipation rate and ensuring that the power component 4 can normally work.

Further, as shown in fig. 3 and 4, the controller further includes an elastic piece 5 detachably connected to the lower housing 22, and the elastic piece 5 is provided with an elastic abutting portion 51; one end of the elastic abutting portion 51 passes through the printed circuit board 1 and is elastically deformable to abut against the power member 4, so that the heat conductive member 6 and the power member 4 are both interposed between the printed circuit board 1 and the inner bottom wall of the lower case 22. The elastic piece 5 and the elastic contact portion 51 are integrally provided.

In this embodiment, the elastic piece 5 and the lower housing 22 are connected by a first fastener 52, such as a screw, specifically, a connection post 221 is convexly disposed at a connection position of the inner bottom wall and the side wall of the lower housing 22, a through hole is disposed on the printed circuit board 1, and the first fastener 52 sequentially passes through the through holes of the elastic piece 5 and the printed circuit board 1 and is screwed to the connection post 221. In this embodiment, two connection posts 221 are disposed on two opposite sides of the lower housing 22 and at two ends of the elastic sheet 5 in the length direction. It should be noted that the number of the first fastening members 52 is not limited to two, and four, six or more may be adopted, and in this case, it is preferable that the first fastening members 52 are provided in pairs, each pair of the first fastening members 52 is provided on both sides of the width direction of the elastic sheet 5, and the plurality of pairs of the first fastening members 52 are distributed along the length direction of the elastic sheet 5. In other embodiments, the elastic piece 5 may be clamped with the lower housing 22, so that when the elastic piece 5 is connected to the lower housing 22, the elastic abutting portion 51 is elastically deformed to abut against the inner bottom wall of the lower housing 22.

More specifically, the elastic abutting portions 51 are provided in one-to-one correspondence with the power components 4, and the printed circuit board 1 is provided with the cutouts 13 in one-to-one correspondence with the power components 4. In this embodiment, three elastic contact portions 51 are provided on each of opposite sides of the elastic contact portions 51, and the two elastic contact portions 51 corresponding to the pair of power components 4 are provided so as to be gradually enlarged in a direction away from the elastic piece 5, that is, in a direction from the upper case 21 to the lower case 22.

When the elastic piece 5 is installed, the elastic piece 5 is arranged on the front surface 11 of the printed circuit board 1, so that the six elastic abutting parts 51 respectively penetrate through the corresponding hollow parts 13 to abut against the upper surface of the corresponding power component 4 and the side surface facing the printed circuit board 1, and then the elastic piece 5 is connected to the lower shell 22 through a first fastener 52 such as a screw and the like, so that the elastic abutting parts 51 are elastically deformed and abut against one side of the corresponding power component 4 facing the printed circuit board 1, so that the printed circuit board 1, the power component 4, the heat conducting component 6 and the inner bottom wall of the lower shell 22 are sequentially abutted against each other, external force is prevented from directly acting on the printed circuit board 1, and electronic devices on the printed circuit board 1 are effectively protected; and the heat conducting component 6 is fully contacted with the power component 4, the heat conducting component 6 is clamped between the power component 4 and the inner bottom wall of the lower shell 22, heat generated by the work of the power component 4 is transferred to the external atmosphere through the heat conducting component 6 and the lower shell 22, the heat transfer path is shortened, the heat dissipation efficiency is improved, the normal heat dissipation of the power component 4 is ensured, and the service life of the controller is prolonged.

In this embodiment, the side of the power component 4 facing the printed circuit board 1 is a plastic surface, so as to avoid damage to the power component 4 when the elastic abutting portion 51 acts on the power component 4.

The elastic sheet 5 gradually expands the two elastic abutting parts 51 corresponding to the pair of power components 4 in the direction away from the elastic sheet 5, so that the elastic sheet 5 has certain elasticity, and for a controller applied to a shared bicycle, the elastic sheet 5 adopting the structure can still ensure that the heat conducting component 6 is always clamped between the power components 4 and the bottom wall of the lower shell 22 under frequent vibration, so that the heat conducting component 6 is elastically contacted with the power components 4; meanwhile, although the elastic sheet 5 is aged due to cold and hot shock, the heat conduction component 6 can still be clamped between the power component 4 and the bottom wall of the lower shell 22 by the elastic abutting portion 51, so that the heat conduction component 6 is effectively prevented from being separated from the power component 4, the heat conduction component 6 can conduct heat to the power component 4 normally, and the service life of the power component 4 is prolonged.

The upper shell 21 is provided with a glue filling port 212 and a cover plate 23 for sealing the glue filling port 212; the mounting cavity is filled with filling glue, and the printed circuit board 1 and the electronic components thereon are wrapped in the filling glue. In this embodiment, the cover plate 23 and the upper case 21 are engaged, and the engagement of the cover plate 23 and the upper case 21 is the same as the engagement of the upper case 21 and the lower case 22, and therefore, the description thereof is omitted. In other embodiments, the glue filling opening 212 may be disposed on the lower housing 22, and the cover plate 23 may be connected to the upper housing 21 by a fastener such as a screw.

The filling glue can be glue, grease and other materials which can be used for sealing. In other embodiments, an elastic rubber pad may be disposed between the printed circuit board 1 and the contact surfaces of the upper housing 21 and the lower housing 22 for waterproofing the printed circuit board 1.

Because the power component 4 is arranged on the back 12 of the printed circuit board 1, a space is formed between the printed circuit board 1 and the inner bottom wall of the lower shell 22, the printed circuit board 1 and the electronic components thereon can be wrapped in the filling glue by filling the filling glue into the mounting cavity, and the waterproof effect of the printed circuit board 1 and the electronic components thereon is improved; adopt the integrated interface terminal 3 that this embodiment provided simultaneously, only need through to integrated interface terminal 3 and go up casing 21 seal can, cancel the operation of gluing when adopting traditional plug wire, make the sealed effect of controller can reach IP67 level, can deal with various complicated weather environment when being applied to shared bicycle with above-mentioned controller.

In this embodiment, the upper housing 21 and the cover plate 23 are both made of plastic, the lower housing 22 is made of aluminum, and the elastic sheet 5 is made of metal material with elasticity and thermal conductivity. Since the lower case 22 is made of aluminum, the heat-conducting member 6 is made of an insulating material.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Claims

1. A controller, includes the shell and locates printed circuit board (1) in the shell, its characterized in that still including locating in the shell:

the power component (4) is arranged on one side of the printed circuit board (1) and is welded with the printed circuit board (1);

the heat conduction component (6) is arranged on one side, back to the printed circuit board (1), of the power component (4) and is tightly attached to the power component (4);

the elastic piece (5), the elastic piece (5) can be detachably connected to the shell, an elastic abutting portion (51) is arranged on the elastic piece (5), one end of the elastic abutting portion (51) penetrates through the printed circuit board (1) and can be elastically deformed so as to enable the power component (4) and the heat conduction component (6) to be clamped between the inner wall of the shell and the printed circuit board (1).

2. A controller according to claim 1, characterized in that the power component (4) is provided on the back side (12) of the printed circuit board (1).

3. A controller according to claim 2, characterized in that the power component (4) is arranged parallel to the printed circuit board (1), the heat conducting component (6) completely covering the side of the power component (4) facing away from the printed circuit board (1).

4. The controller according to claim 1, wherein a plurality of pins (41) are provided on the power component (4), one end of each pin (41) not connected with the power component (4) is bent to the side of the printed circuit board (1) to form a bent portion (42), and the bent portion (42) is welded to the printed circuit board (1);

two adjacent bending parts (42) on the same power component (4) are arranged in a staggered mode.

5. A controller according to claim 4, characterized in that the power components (4) are provided with at least two;

the stitch (41) between the two power components (4) is arranged oppositely, and the distance between the bending parts (42) of the stitch (41) arranged oppositely is equal.

6. A control according to any one of claims 1 to 5, characterised in that the resilient abutment portions (51) are provided in at least one pair, each pair of resilient abutment portions (51) being provided on opposite sides of the power component (4).

7. A control according to claim 6, wherein each pair of said resilient abutments (51) is divergent in a direction away from said resilient tab (5).

8. A controller according to any one of claims 1 to 5, characterized in that the printed circuit board (1) is provided with a cutout (13) for penetrating the elastic abutment (51).

9. A control according to any of claims 1 to 5, characterised in that the resilient tab (5) is connected to the housing by a first fastener (52).