Fixing device for controller

Abstract

The utility model belongs to the technical field of electric bicycles, and particularly relates to a fixing device for a controller. The installation structure comprises an installation column and a screw. A column body of the mounting column protrudes outwards to form a first abutting part, the mounting column is divided into a first column body and a second column body through the first abutting part, an inner threaded hole is formed in the end, located on the side of the first column body, of the second column body, and a through hole communicated with the inner threaded hole is formed in the first column body; the circuit board and the shell are respectively provided with a plurality of mounting holes which are correspondingly arranged, when the circuit board is mounted in the shell, the first column bodies of the mounting columns sequentially penetrate through the mounting holes of the circuit board and the shell and extend to the outer side of the shell to form extension ends, and the extension ends protrude outwards to form second abutting parts; the circuit board is in threaded connection with the second column body through a screw, the second abutting part abuts against the shell, the first abutting part abuts against the circuit board, and the circuit board is fixed to the shell. The mounting column is fixed only through one screw, the assembling efficiency is high, and the manufacturing cost is low.

Description

Technical Field

[0001] The utility model belongs to the technical field of electric bicycles, and particularly relates to a fixing device for a controller. Background Art

[0002] An electric bicycle (electric vehicle) refers to a vehicle that uses a storage battery as an auxiliary energy source and is equipped with a motor, a controller, a storage battery, a throttle grip, a brake lever and other operating components and a display instrument system on the basis of an ordinary bicycle.

[0003] An electric vehicle controller is a core control device used to control the start, operation, forward and backward movement, speed, stop of an electric vehicle motor and other electrical components of the electric vehicle. It is like the brain of the electric vehicle and is an important component on the electric vehicle.

[0004] When connecting electronic components on the circuit board of the existing electric vehicle controller, copper posts or aluminum posts are arranged on the circuit board, and threaded holes are arranged at the tops of the copper posts or aluminum posts, and wire terminals are fixed by screws. The existing copper posts or aluminum posts are fixed to the circuit board by two screws. For example, in the patent No. CN 205543316 U, with the name of a wiring terminal for an electric vehicle controller, one wiring terminal needs to be fixed by two screws, which makes the workload of personnel large during the controller assembly process. In addition, when the circuit board of the controller is fixedly installed on the inner bottom plate of the controller housing, screws also need to be used for fixation. This will further increase the usage amount of screws and the assembly efficiency is low. Moreover, with this type of fixing method, the installation space of the circuit board components will be reduced, the area of the circuit board needs to be increased, resulting in a large overall volume and high manufacturing cost of the existing electric vehicle controller. Therefore, a fixing device for a controller is needed to solve the problems that the wiring terminals on the circuit board of the existing controller are fixed by two screws, and the circuit board also needs to be fixed to the housing by screws, resulting in a large volume, high manufacturing cost and low assembly efficiency of the existing controller. Summary of the Utility Model

[0005] The utility model provides a fixing device for a controller, aiming to solve the existing technical problems.

[0006] The present utility model is implemented as follows. A fixing device for a controller, the controller includes a housing and a circuit board, and the fixing device includes a mounting post and a screw; a protrusion is formed on the column body of the mounting post to form a first abutting portion. The column body of the mounting post is divided into a first column body and a second column body by the first abutting portion. An internal threaded hole is provided at the end of the second column body on the side of the first column body, and a through hole communicating with the internal threaded hole is provided inside the first column body; a plurality of corresponding mounting holes are respectively provided on the circuit board and the housing. When the circuit board is installed in the housing, the first column body of the mounting post sequentially passes through the mounting holes of the circuit board and the housing and extends to the outside of the housing to form an extended end, and the extended end protrudes outward to form a second abutting portion; the circuit board is threadedly connected to the internal threaded hole of the second column body by a screw, the second abutting portion abuts against the housing, and the first abutting portion abuts against the circuit board to fix the circuit board inside the housing.

[0007] Specifically, the mounting holes on the circuit board are electrically connecting holes or part of them are electrically connecting holes.

[0008] Specifically, an internal threaded hole is provided at the end of the second column body away from the first column body to install a wire terminal through a screw.

[0009] Specifically, the first column body and the second column body of the mounting post are of a split structure.

[0010] Specifically, the first column body is made of an insulating material, and the second column body is made of a metal material.

[0011] Specifically, the first column body is of a ring structure, and two relatively parallel limiting portions are provided on the outer ring surface of the ring. The shape of the mounting hole of the housing is adapted to the shape of the first column body, and the column body of the first column body located in the mounting hole is restricted from rotating relative to the mounting hole through the limiting portions.

[0012] Specifically, one end of the first column body facing the circuit board protrudes axially outward to form a columnar positioning portion; the circuit board is sleeved on the bottom of the columnar positioning portion through the mounting hole, is arranged separately from the housing, and the end of the columnar positioning portion extends to the outside of the circuit board.

[0013] Specifically, a plurality of positioning blocks are arranged at intervals on the annular surface of the first column body at the bottom of the columnar positioning portion, and one end of the positioning block extends to the outside of the circuit board; positioning holes are respectively provided at positions corresponding to the positioning blocks on the first abutting portion of the second column body. When the first column body and the second column body are connected as a whole, the positioning blocks and the positioning holes correspond one by one.

[0014] Specifically, a groove is provided on the side of the first abutting portion of the second column body facing the first column body, and a sealing layer is coated in the groove.

[0015] Specifically, the first column body is made of a plastic material, and the second column body is made of a copper material or an aluminum material.

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0017] The fixing device for the controller of the present application includes a mounting post and a screw. The column body of the mounting post protrudes outward to form a first abutting portion. The column body of the mounting post is divided into a first column body and a second column body by the first abutting portion. Corresponding mounting holes are respectively provided on the circuit board and the housing. When the circuit board is installed in the housing, the first column body of the mounting post passes through the mounting holes of the circuit board and the housing in sequence and extends to the outside of the housing to form an extended end, and the extended end protrudes outward to form a second abutting portion; so that by screwing a screw into the threaded hole of the second body, the circuit board can be fixed inside the housing, and the use of screws can be reduced. In addition, the first column body of the mounting post of the present application is made of an insulating material, and the second column body is made of a metal material, so that the circuit board can be fixed through the mounting post, and the second column body of the mounting post can be used as a traditional terminal post for wire terminal installation. The use of screws can be further reduced to reduce labor, improve the assembly efficiency, and the single-screw fixing method can save the installation space of the mounting post, realize the layout difficulty of the circuit board, reduce the overall volume of the controller, and reduce the manufacturing cost.

[0018] On the basis of the above, all the mounting holes on the circuit board of the present application can be electrical connection holes. The circuit board can be fixed and the circuit harness can be connected through the mounting post, so that there is no need to separately provide mounting holes only for fixing on the circuit board. It saves the space of the circuit board product, reduces the manufacturing process of the circuit board, and saves costs.

[0019] On the basis of the above, the first column body is of a ring structure, and two relatively parallel limiting portions are provided on the outer ring surface of the ring. The shape of the mounting hole of the housing is adapted to the shape of the first column body. The column body of the first column body located in the mounting hole is restricted from rotating relative to the mounting hole through the limiting portion. So that when the circuit board is fixed to the housing through the mounting post, an anti-rotation structure is formed between the first column body of the mounting post and the housing, so that when the screw is tightened, the mounting post and the mounting hole of the housing will not rotate relative to each other, and the installation stability of the mounting post is improved.

[0020] On the basis described above, one end of the first cylinder facing the circuit board bulges axially outwards to form a columnar positioning portion; the circuit board is sleeved on the bottom of the columnar positioning portion through the mounting holes and is arranged in isolation from the housing, so as to keep the circuit board and the housing isolated from each other, avoid short circuits between the circuit board and the housing, and improve the safety of use of the circuit board. In addition, a plurality of positioning blocks are arranged at intervals on the annular surface of the first cylinder along the bottom of the columnar positioning portion, and one end of the positioning block extends to the outside of the circuit board; positioning holes are respectively formed at positions corresponding to the positioning blocks on the first abutting portion of the second cylinder. When the first cylinder and the second cylinder are connected as a whole, the positioning blocks and the positioning holes correspond one by one. When the second cylinder is installed on the first cylinder, the strength of the second main body is strengthened by the positioning blocks, and it can also ensure that when installing the wire terminal and tightening the screw, the second cylinder and the first cylinder will not rotate relative to each other, thereby improving the installation stability of the mounting column.

[0021] On the basis described above, a groove is formed on the side of the first abutting portion of the second cylinder facing the first cylinder, and a sealing layer is coated in the groove. The first cylinder is made of plastic material. When the circuit board is installed in the housing, through the first abutting portion of the first cylinder and the sealing layer of the second main body, a certain sealing and waterproof effect can be achieved at the connection between the first cylinder and the second cylinder, avoiding damage to the circuit board and improving the service life of the circuit board. Description of the Drawings

[0022] Figure 1 Structural schematic diagram of the controller of this embodiment;

[0023] Figure 2 Structural schematic diagram of the controller of this embodiment (the top cover is not shown);

[0024] Figure 3 Exploded view of the structure of the controller of this embodiment;

[0025] Figure 4 Cross-sectional view of the structure of the controller of this embodiment;

[0026] Figure 5 Structural schematic diagram of the mounting column of the fixing device for the controller of this embodiment;

[0027] Figure 6 Structural schematic diagram of the first cylinder of the mounting column of the fixing device for the controller of this embodiment;

[0028] Figure 7 Structural schematic diagram of the second cylinder of the mounting column of the fixing device for the controller of this embodiment. Detailed Implementation Modes

[0029] In order to make the objectives, technical solutions and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0030] Please refer to Figures 1-7 , the present utility model provides a fixing device for a controller. The controller includes a housing and a circuit board. The housing of this embodiment includes a bottom case 6 and a top cover 1. The fixing device includes a mounting post and a screw 2. The column body of the mounting post protrudes outward to form a first abutting portion 40. The column body of the mounting post is divided into a first column body 7 and a second column body 4 by the first abutting portion. The end of the second column body 4 on the side of the first column body is provided with an internal thread hole, and a through hole communicating with the internal thread hole is provided inside the first column body. A plurality of corresponding mounting holes 8 are respectively provided on the circuit board 5 and the bottom case. When the circuit board 5 is installed in the bottom case, the first column body of the mounting post passes through the mounting holes of the circuit board and the bottom case in sequence and extends to the outside of the bottom case to form an extended end, and the extended end protrudes outward to form a second abutting portion 73. The circuit board is threadedly connected to the internal thread hole of the second column body by a screw, and the second abutting portion abuts against the bottom case, and the first abutting portion abuts against the circuit board, fixing the circuit board inside the bottom case.

[0031] Furthermore, the mounting hole 8 on the circuit board 5 is an electrically connecting hole.

[0032] The end of the second column body of this embodiment away from the first column body is provided with an internal thread hole to install a wire terminal 3 through a screw 2. In addition, the first column body and the second column body of the mounting post of this embodiment are of a split structure, and the first column body is made of plastic material, and the second column body is made of copper material.

[0033] The first column body 7 of this embodiment is of a ring structure, and two relatively parallel limiting portions 70 are provided on the outer ring surface of the ring. The shape of the mounting hole of the bottom case is adapted to the shape of the first column body. The column body of the first column body located in the mounting hole is restricted from rotating relative to the mounting hole through the limiting portion. And one end of the first column body facing the circuit board protrudes axially outward to form a columnar positioning portion 71. The circuit board 5 is sleeved on the bottom of the columnar positioning portion through the mounting hole, and is arranged in isolation from the bottom case, and the end of the columnar positioning portion extends to the outside of the circuit board.

[0034] In addition, two positioning blocks 72 are evenly distributed at intervals on the annular surface of the first column body at the bottom of the columnar positioning portion of this embodiment, and one end of the positioning block extends to the outside of the circuit board; positioning holes 41 are respectively opened at positions corresponding to the positioning blocks on the first abutting portion 40 of the second column body 4. When the first column body and the second column body are connected into one body, the positioning blocks and the positioning holes correspond one by one. And a groove 42 is opened on the side of the first abutting portion of the second column body facing the first column body, and a sealing layer is coated in the groove.

[0035] Working principle of the utility model: When the fixing device of the controller in this embodiment is in use, the operator first assembles the first column, the second column and the circuit board into an integral body. Specifically, the first column is inserted from the bottom of the circuit board mounting hole, and the columnar positioning portion extends from the mounting hole to the other side of the circuit board. Then, the second column is installed on the columnar positioning portion. The positioning blocks and positioning holes of the first column and the second column are correspondingly arranged, so that the installation can be quickly positioned. It should be noted here that before installing the second column, sealant is applied to the groove of the second column to form a sealing layer. Repeat the above steps until all the mounting holes on the circuit board are installed with the mounting posts. Then, the circuit board is installed inside the bottom case of the controller. When installing, ensure that the second abutting end of the first column of each mounting post extends out of the mounting hole of the bottom case, so as to facilitate subsequent screw fastening. Then, screws are inserted into the through holes of the first column one by one and threadedly connected to the internal threads of the internal thread holes of the second column. While tightening the screws, the second abutting portion of the first column of the mounting post abuts against the bottom case, and the first abutting portion of the second column abuts against the circuit board, completing the fixed installation of the mounting post and fastening the circuit board inside the bottom case at the same time. And there is no direct contact between the circuit board and the bottom case, keeping an isolated state. Since the first column is made of insulating material, it can ensure insulation isolation between the circuit board and the bottom case, avoid short circuits between the circuit board and the bottom case, and improve the use safety.

[0036] After completing the installation of the mounting posts, then the wire terminals are fixedly installed on the internal thread holes at the ends of the second columns of the mounting posts by screws to realize the electrical connection of the circuit board components. Finally, the top cover 1 of the bottom case is installed on the bottom case to complete the assembly work of the controller.

[0037] The above is only a preferred embodiment of the utility model and is not intended to limit the utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the utility model shall be included within the protection scope of the utility model.

Claims

1. A fixing device for a controller, the controller comprising a housing and a circuit board, characterized in that: The fixing device includes a mounting post and a screw; a protrusion is formed on the column body of the mounting post to form a first abutting portion. The column body of the mounting post is divided into a first column body and a second column body by the first abutting portion. An internal threaded hole is provided at the end of the second column body on the side of the first column body, and a through hole communicating with the internal threaded hole is provided inside the first column body; a plurality of corresponding mounting holes are respectively provided on the circuit board and the housing. When the circuit board is installed in the housing, the first column body of the mounting post sequentially passes through the mounting holes of the circuit board and the housing and extends to the outside of the housing to form an extended end, and the extended end protrudes outward to form a second abutting portion; the circuit board is threadedly connected to the internal threaded hole of the second column body by a screw, the second abutting portion abuts against the housing, and the first abutting portion abuts against the circuit board to fix the circuit board inside the housing.

2. The fixing device for a controller according to claim 1, characterized in that: The mounting holes on the circuit board are electrical connection holes or part of them are electrical connection holes.

3. A fixing device for a controller according to claim 1 or 2, characterized in that: An internal threaded hole is provided at the end of the second column body away from the first column body to install a wire terminal by a screw.

4. The fixing device for a controller according to claim 3, characterized in that: The first column body and the second column body of the mounting post are of a split structure.

5. The fixing device for a controller according to claim 4, characterized in that: The first column body is made of an insulating material, and the second column body is made of a metal material.

6. The fixing device for a controller according to claim 4, characterized in that: The first column body is of a ring structure, and two relatively parallel limiting portions are provided on the outer ring surface of the ring. The shape of the mounting hole of the housing is adapted to the shape of the first column body. The column body of the first column body located in the mounting hole is restricted from rotating relative to the mounting hole by the limiting portions.

7. A fixing device for a controller according to claim 4, characterized in that: One end of the first column body facing the circuit board protrudes axially outward to form a columnar positioning portion; the circuit board is sleeved on the bottom of the columnar positioning portion through the mounting hole, is arranged in isolation from the housing, and the end of the columnar positioning portion extends to the outside of the circuit board.

8. A fixing device for a controller according to claim 7, characterized in that: A plurality of positioning blocks are provided at intervals on the annular surface of the first column body at the bottom of the columnar positioning portion, and one end of the positioning block extends to the outside of the circuit board; positioning holes are respectively provided at positions corresponding to the positioning blocks on the first abutting portion of the second column body. When the first column body and the second column body are connected into one body, the positioning blocks and the positioning holes correspond one by one.

9. The fixing device for a controller according to claim 1, characterized in that: A groove is provided on the side of the first abutting portion of the second column body facing the first column body, and a sealing layer is coated in the groove.

10. A fixing device for a controller according to claim 5, characterized in that: The first column body is made of a plastic material, and the second column body is made of a copper material or an aluminum material.

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