Main control PCB sub-assembly assembling tool of automobile automatic gear shifter

Abstract

The utility model discloses a main control PCB sub-assembly assembling tool of an automobile automatic gear shifter. A mounting seat limits a support body sub-assembly from the front, back, left and right directions; an arc-shaped groove is formed in one side, close to the left stop block, of the upper end surface of the right stop block; the cushion block is arranged next to the right side surface of the left stop block, and the front end is far away from the front stop block; the first cylinder is a rotary clamping cylinder, and a piston rod of the first cylinder is vertically arranged; one end of the connecting rod is connected with a piston rod of the first air cylinder, the lower portion of the other end of the connecting rod is connected with the first pressing block, and the first air cylinder can rotate by 90 degrees while pressing downwards, so that the first pressing block can reach the upper portion of the main control PCB cover and tightly press the main control PCB cover downwards; the side pressing structure is arranged on the right side of the right check block. The second pressing block is connected with a piston rod of the second air cylinder. The automatic screw driving mechanism is arranged on the side edge of the base plate, one end of the rotating mechanism is arranged on the sliding rod in a sliding mode, and a screwdriver is arranged at the other end of the rotating mechanism, so that the screwdriver can move up and down and rotate in the horizontal direction so as to fasten screws at different positions on the main control PCB cover.

Description

Technical Field

[0001] This utility model relates to the field of automotive gear shifter assembly technology, and in particular to an assembly fixture for the main control PCB sub-assembly of an automotive automatic gear shifter. Background Technology

[0002] In the modern automotive industry, the power transmission system is a crucial component ensuring normal vehicle operation and performance, and the gear shifter, as the core control hub of this system, plays a vital role. During driving, a car needs to continuously adjust its speed and power output based on different road conditions, speeds, and driving demands to achieve an efficient, safe, and comfortable driving experience. The main function of the gear shifter is to manipulate the transmission, changing the meshing state of the gears within the transmission to achieve gear changes, thereby adjusting the car's speed and torque output. The precise operation and reliable performance of the gear shifter directly affect the car's power transmission efficiency and driving smoothness; furthermore, the quality of the gear shifter directly restricts the car's safety performance.

[0003] The main control PCB (printed circuit board) is the core component of the gear shifter and plays a crucial role in the realization of the gear shifter's functions. It contains a number of electronic components, including resistors, capacitors, inductors, and integrated circuits. These components are connected by circuits to realize signal processing, transmission, and control. Many of these components also have pins, which are the key parts for connecting the components to the PCB board and external circuits. The accuracy and reliability of their installation directly affect the electrical performance of the entire gear shifter. In the production process of the gear shifter, the installation of the main control PCB is a critical and meticulous step. The position of the main control PCB must be accurate. In existing technologies, operators typically hold the support assembly by hand to install the main control PCB and its cover. Even when tooling is used, improper tooling can lead to instability of the support assembly, causing overall shaking during assembly, especially when tightening screws. This can damage the electronic components on the main control PCB. Furthermore, when tightening the main control PCB cover, manual screw tightening makes it difficult to achieve completely uniform tightening force, which may cause the main control PCB to be squeezed or even deformed. This can then cause pressure and pulling on the electronic components. For some precision electronic components, such as integrated circuit chips, this uneven stress can damage the internal structure of the components, leading to cracks and breaks, seriously affecting the performance and lifespan of the components. For components with pins, the pins may bend or break, thereby damaging the circuit connection and causing the gear shifter to malfunction. For small and medium-sized enterprises with limited economic resources and low levels of automation, there is an urgent need to develop a main control PCB sub-assembly assembly tooling for gear shifters to solve the above problems.

[0004] The above background information is provided only to aid in understanding the concept and technical solution of this utility model. It does not necessarily belong to the prior art of this patent application. In the absence of clear evidence that the above information was disclosed on the filing date of this patent application, the above background information should not be used to evaluate the novelty and inventiveness of this application. Utility Model Content

[0005] The purpose of this utility model is to propose an assembly tooling for the main control PCB sub-assembly of an automatic gear shifter in automobiles, so as to solve the technical problems of deformation of the main control PCB and damage to electronic components caused by uneven force in the existing technology.

[0006] Therefore, this utility model proposes an assembly tooling for the main control PCB sub-assembly of an automotive automatic gear shifter.

[0007] Preferably, the present invention may also have the following technical features:

[0008] An assembly fixture for the main control PCB sub-assembly of an automotive automatic gear shifter includes a base plate and an automatic screw-driving mechanism mounted on a worktable, as well as a mounting base, an upper pressing mechanism, and a side pressing mechanism mounted on the base plate.

[0009] The mounting base includes a left stop block, a right stop block, a front stop block, and a rear stop block to limit the position of the support body assembly from four directions: front, rear, left, and right. The upper surface of the right stop block is provided with an arc-shaped groove near the left stop block, and the arc-shaped groove matches the arc on the rear side of the support body. The mounting base also includes a pad, which is elongated and disposed close to the right side of the left stop block, with the front end of the pad away from the front stop block.

[0010] The pressing mechanism includes a first cylinder, a connecting rod, and a first pressing block. The first cylinder is a rotary clamping cylinder with its piston rod set vertically. One end of the connecting rod is connected to the piston rod of the first cylinder, and the other end is connected to the first pressing block below. The first cylinder can rotate 90° while pressing down, so that the first pressing block can reach above the main control PCB cover and press down on the main control PCB cover.

[0011] The side pressure structure is located on the right side of the right stop block, and includes a second cylinder and a second pressure block, wherein the second pressure block is connected to the piston rod of the second cylinder;

[0012] The automatic screw-driving mechanism is located on the side of the substrate and includes a sliding rod, a rotating mechanism, and a screwdriver. One end of the rotating mechanism is slidably mounted on the sliding rod, and the other end is equipped with the screwdriver, so that the screwdriver can move up and down and rotate in the horizontal direction to tighten screws at different positions on the main control PCB cover.

[0013] Preferably, the first pressing block is made of rubber.

[0014] Preferably, the working air pressure of the first cylinder and the second cylinder is 0.5MPa to 0.7MPa.

[0015] Preferably, the torque of the screwdriver can be preset, and the preset torque is 1.0 N·m to 1.6 N·m.

[0016] Preferably, the rotating mechanism includes a connecting rod and a rotating rod. One end of the connecting rod is disposed on the sliding rod through a guide sleeve, so that the connecting rod can slide up and down along the sliding rod and can rotate around the sliding rod; the other end of the connecting rod is connected to the rotating rod.

[0017] Preferably, an auxiliary rod is vertically arranged on the side of the sliding rod, and auxiliary blocks are respectively arranged at the upper and lower ends of the auxiliary rod to fix the auxiliary rod and the sliding rod together.

[0018] Preferably, the rotating mechanism includes two optical rods, a sliding block, a first limiting block, and a mounting block. The sliding block is disposed on the sliding rod, allowing it to slide up and down along the sliding rod and rotate around it. The two optical rods are disposed horizontally within the sliding block, allowing them to slide back and forth within the sliding block. The first limiting block is disposed at one end of the two optical rods, and the screwdriver is disposed at the other end of the two optical rods via the mounting block.

[0019] Preferably, the automatic screw-driving mechanism further includes a second limiting block and a third limiting block respectively disposed at the upper and lower ends of the sliding rod to limit the extreme positions of the vertical sliding of the rotating mechanism.

[0020] Preferably, both the front stop and the rear stop are L-shaped, with the long sides of the L-shape of the front stop and the rear stop arranged horizontally and connected to the front and rear sides of the left stop respectively, and the short sides arranged opposite each other.

[0021] Preferably, a groove is provided on the short side of the "L"-shaped front stop.

[0022] The beneficial effects of this utility model compared with the prior art include:

[0023] The tooling mentioned in this utility model provides a mounting base including a left stop block, a right stop block, a front stop block, and a rear stop block, which is height-matched to the support body sub-assembly. It limits the support body sub-assembly from four directions: front, rear, left, and right. The first cylinder of the upper pressing mechanism is a rotary clamping cylinder, which rotates 90° to send the first pressing block above the main control PCB cover and can also press it down to tighten the main control PCB cover. A side pressing structure is also provided to limit the support body sub-assembly from multiple directions, preventing shaking when tightening screws, which could cause deformation of the main control PCB cover or even damage to the electronic components on the main control PCB. The tooling has a simple structure and is easy to use. Attached Figure Description

[0024] Figure 1 This is a structural schematic diagram of the support body sub-assembly of a specific embodiment of this utility model.

[0025] Figure 2 This is a first schematic diagram of a specific embodiment of the present utility model.

[0026] Figure 3 This is a second schematic diagram of a specific embodiment of the present invention (without the main control PCB and main control PCB cover installed).

[0027] Figure 4 This is a third schematic diagram of a specific embodiment of the present invention (with the main control PCB installed).

[0028] Figure 5 This is the fourth schematic diagram of a specific embodiment of the present invention (with the main control PCB and main control PCB cover installed).

[0029] Explanation of reference numerals in the attached drawings: 01-Worktable; 02-Baseboard; 03-Support body sub-assembly; 31-Support body; 311-Main control PCB mounting position; 312-Screw mounting post; 313-Boss; 314-First hook-shaped protrusion; 315-Second hook-shaped protrusion; 316-Third hook-shaped protrusion; 32-Shift lever; 05-Mounting base; 051-Left stop block; 52-Right stop block; 521-Arc-shaped groove; 53-Front shift lever; 531-Groove; 54-Rear stop block; 55-Padded block; 06-Upper pressing mechanism; 61-First cylinder; 62-Connecting rod; 63-First pressing block; 07-Side pressing mechanism; 71-Second cylinder; 72-Second pressing block; 81-Sliding rod; 82-Screwdriver; 83-Connecting rod; 84-Rotating rod; 85-Guide sleeve; 86-Auxiliary rod; 87-Auxiliary block; 88-Second limit block; 89-Third limit block; 100-Main control PCB; 101-Main control PCB cover. Detailed Implementation

[0030] The present invention will now be described in further detail with reference to specific embodiments and the accompanying drawings. It should be emphasized that the following description is merely exemplary and is not intended to limit the scope and application of the present invention.

[0031] Non-limiting and non-exclusive embodiments will be described with reference to the following figures, wherein the same reference numerals denote the same parts unless otherwise specifically stated.

[0032] An assembly fixture for a main control PCB sub-assembly of an automotive automatic gear shifter is used to assemble the main control PCB 100 and the main control PCB cover 101 onto the support sub-assembly 03 of the automatic gear shifter. The support sub-assembly 03 is a semi-finished product completed in the previous process. Figure 1 As shown, the support body sub-assembly 03 includes a support body 31 and a shift lever 32. A main control PCB mounting position 311 is located in the center of the front side of the support body 31. Four screw mounting posts 312 are symmetrically arranged around the main control PCB mounting position 311. Below the support body 31 is a boss 313, which protrudes entirely from the support body 31. A first hook-shaped protrusion 314 and a second hook-shaped protrusion 315 are located on the rear side of the boss 313, and a third hook-shaped protrusion 316 is located on the right side. During assembly, the support body sub-assembly 03 is tilted onto the mounting base, and the shift lever 32 is rotated to the right.

[0033] like Figures 1-5As shown, the aforementioned tooling specifically includes: a base plate 02 and an automatic screw-driving mechanism disposed on the workbench 01, and a mounting base 05, an upper pressing mechanism 06, and a side pressing mechanism 07 disposed on the base plate 02. The mounting base 05 is used to place the support body sub-assembly 03 of the automotive gear shifter. The mounting base 05 includes a left stop block 51, a right stop block 52, a front stop block 53, and a rear stop block 54 to limit the support body sub-assembly 03 from four directions: front, rear, left, and right. An arc-shaped groove 52 is provided on the upper surface of the right stop block 52 near the left stop block 51. 1. The arc-shaped groove 521 matches the arc on the rear side of the support body 31; the mounting base 05 also includes a pad 55, which is elongated and located close to the right side of the left stop block 51. The front end of the pad 55 is far from the front stop block 53, meaning there is a certain distance between the front end of the pad 55 and the front stop block 53. This allows space for the first hook-shaped protrusion 314 and the second hook-shaped protrusion 315 on the rear side of the boss 313 of the support body 31, preventing interference and damage to the support body 31 when the support body sub-assembly 03 is placed in the fixture. The arc-shaped groove 521 on the right stop block 52, together with the pad 55, provides support for the support body sub-assembly 03 from below, preventing the side of the support body sub-assembly 03 from directly contacting the substrate 02, which could cause the support body sub-assembly 03 to be placed unevenly or even damage the support body 31, thus affecting the subsequent installation of the main control PCB 100 and the main control PCB cover 101. The pressing mechanism 06 includes a first cylinder 61, a connecting rod 62, and a first pressing block 63. The first cylinder 61 is a rotary clamping cylinder with its piston rod vertically positioned. One end of the connecting rod 62 is connected to the piston rod of the first cylinder 61, and the other end is connected to the first pressing block 63 below. The first cylinder 61 can rotate 90° while pressing down, allowing the first pressing block 63 to reach above the main control PCB cover 101 and press down on it, thus limiting the main control PCB cover 101 from above and facilitating subsequent screw tightening. Specifically, to avoid scratching or damaging the main control PCB cover 101, the first pressing block 63 is made of rubber. It is understood that this rubber material should have a certain degree of hardness; for example, polyurethane can be used. The side pressure structure is located on the right side of the right stop block 52, including a second cylinder 71 and a second pressure block 72. The second pressure block 72 is connected to the piston rod of the second cylinder 71. Under the drive of the piston rod of the second cylinder 71, the second pressure block 72 can abut against the right end face of the support body 31 to limit the support body sub-assembly 03 from the right side.Specifically, the working air pressure of the first cylinder 61 and the second cylinder 71 is 0.5MPa to 0.7MPa. That is to say, when the first cylinder 61 presses down and the second cylinder 71 pushes out, their air pressure values ​​are 0.5MPa to 0.7MPa. This avoids the first pressure block 63 and the second pressure block 72 not being positioned properly due to insufficient air pressure, or the first pressure block 63 and the second pressure block 72 being over-compressed due to excessive air pressure, which would cause deformation of the support body 31. Specifically, the start of the first cylinder 61 and the second cylinder 71 can be controlled by two buttons respectively. The first cylinder 61 and the second cylinder 71 can be moved simultaneously by pressing the two buttons at the same time, so that the first pressure block 63 and the second pressure block 72 press the support body 31 from the top and the right side respectively. The automatic screw-driving mechanism is located on the side of the substrate and includes a sliding rod 81, a rotating mechanism, and a screwdriver 82. One end of the rotating mechanism is slidably mounted on the sliding rod 81, and the other end is equipped with the screwdriver 82, so that the screwdriver 82 can move up and down and rotate in the horizontal direction to tighten screws at different positions on the main control PCB cover 101.

[0034] The aforementioned fixture provides mounting bases including a left stop block, a right stop block, a front stop block, and a rear stop block, which are height-matched to the support body sub-assembly. These bases limit the movement of the support body sub-assembly from four directions: front, rear, left, and right. The first cylinder of the upper pressing mechanism is a rotary clamping cylinder, which rotates 90° to send the first pressing block above the main control PCB cover and also presses it down to tighten the main control PCB cover. A side pressing structure is also provided to limit the movement of the support body sub-assembly from multiple directions, preventing shaking during screw tightening, which could cause deformation of the main control PCB cover or even damage to the electronic components on the main control PCB. The fixture has a simple structure and is easy to use.

[0035] Specifically, the torque of the screwdriver 82 can be preset, with a preset torque of 1.0 N·m to 1.6 N·m. Different specifications of screwdrivers can also be selected according to production needs. In actual production, before the start of the shift, the staff needs to adjust the torque of the screwdriver 82 to 1.0 N·m to 1.6 N·m and measure it with a torque calibrator. Only when the torque is displayed within this range will the screwdriver 82 be installed into the rotating mechanism for assembly. During the assembly work, the staff tightens the screws on the main control PCB cover 101 by rotating and pressing down the screwdriver 82. Usually, a "click" sound will be heard when the tightening is completed, indicating that the screws are installed in place. The main control PCB cover 101 is then fixed to the support body 31, covering the main control PCB 100 to prevent it from being damaged.

[0036] like Figure 2As shown in some examples of this embodiment, the rotating mechanism includes a connecting rod 83 and a rotating rod 84. One end of the connecting rod 83 is mounted on the sliding rod 81 via a guide sleeve 85, allowing the connecting rod 83 to slide up and down along the sliding rod 81 and rotate around the sliding rod 81. The other end of the connecting rod 83 is connected to the rotating rod 84. To ensure a robust automatic screw-driving mechanism and smoother sliding, an auxiliary rod 86 is vertically mounted on the side of the sliding rod 81, and auxiliary blocks 87 are mounted at both the upper and lower ends of the auxiliary rod 86 to fix the auxiliary rod 86 to the sliding rod 81.

[0037] In other examples of this embodiment, the rotating mechanism includes two smooth rods, a sliding block, a first limiting block, and a mounting block. The sliding block is disposed on the sliding rod, allowing it to slide up and down along the sliding rod and rotate around it. The two smooth rods are horizontally disposed within the sliding block, allowing them to slide back and forth within the sliding block. The first limiting block is disposed at one end of the two smooth rods, and the screwdriver is disposed at the other end of the two smooth rods via the mounting block. Specifically, as shown... Figure 2 As shown, the aforementioned automatic screw-driving mechanism further includes a second limiting block 88 and a third limiting block 89 respectively disposed at the upper and lower ends of the sliding rod 81 to limit the extreme positions of the vertical sliding of the rotating mechanism. The rotating mechanism of the above structure allows the screwdriver to rotate and slide, facilitating the tightening of screws on the main control PCB cover by the operator.

[0038] In some examples of this embodiment, such as Figure 3 and 4 As shown, both the front stop 53 and the rear stop 54 are L-shaped. The long sides of the L-shape of the front stop 53 and the rear stop 54 are arranged horizontally and connected to the front and rear sides of the left stop 51, respectively. The short sides are arranged opposite each other. During specific assembly work, the inner side of the short side abuts against the boss 313 of the support body 31, so that the long sides of the front stop 53 and the rear stop 54 can limit the front and rear sides of the support body sub-assembly 03, while the short sides can provide positioning on the right side, realizing multi-point limiting and preventing the support body sub-assembly 03 from shaking in subsequent processes. Specifically, a groove 531 is provided on the short side of the L-shape of the front stop. The groove 531 is used to make way for the third hook-shaped protrusion 316 on the right side of the boss 313 of the support body 31, so as to avoid interference and affect subsequent installation.

[0039] The working principle of the above tooling is as follows: the support body sub-assembly 03 is tilted and placed on the mounting base 05. The main control PCB 100 is manually placed on the main control PCB mounting position 311. Then, the main control PCB cover 101 is installed by positioning it through the screw mounting post 312 on the support body 31. The button is pressed to rotate and press down the connecting rod 62, causing the second cylinder 71 to push out and press the right side of the support body 31. The automatic screw-driving mechanism is manually pulled to operate diagonally and tighten the four screws respectively.

[0040] Those skilled in the art will recognize that numerous variations are possible with respect to the above description, and the embodiments and figures are merely for describing one or more specific implementations.

[0041] Although exemplary embodiments of the present invention have been described and illustrated, those skilled in the art will understand that various changes and substitutions can be made thereto without departing from the spirit of the present invention. Furthermore, many modifications can be made to adapt specific situations to the doctrine of the present invention without departing from the central concept of the present invention described herein. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but may include all embodiments and equivalents that fall within the scope of the present invention.

Claims

1. An assembly fixture for the main control PCB sub-assembly of an automotive automatic gear shifter, characterized in that: It includes a base plate and an automatic screw-driving mechanism mounted on a workbench, as well as a mounting base, an upper pressing mechanism, and a side pressing mechanism mounted on the base plate. The mounting base includes a left stop block, a right stop block, a front stop block, and a rear stop block to limit the position of the support body assembly from four directions: front, rear, left, and right. The upper surface of the right stop block is provided with an arc-shaped groove near the left stop block, and the arc-shaped groove matches the arc on the rear side of the support body. The mounting base also includes a pad, which is elongated and disposed close to the right side of the left stop block, with the front end of the pad away from the front stop block. The pressing mechanism includes a first cylinder, a connecting rod, and a first pressing block. The first cylinder is a rotary clamping cylinder with its piston rod set vertically. One end of the connecting rod is connected to the piston rod of the first cylinder, and the other end is connected to the first pressing block below. The first cylinder can rotate 90° while pressing down, so that the first pressing block can reach above the main control PCB cover and press down on the main control PCB cover. The side pressure mechanism is located on the right side of the right stop block, and includes a second cylinder and a second pressure block, wherein the second pressure block is connected to the piston rod of the second cylinder; The automatic screw-driving mechanism is located on the side of the substrate and includes a sliding rod, a rotating mechanism, and a screwdriver. One end of the rotating mechanism is slidably mounted on the sliding rod, and the other end is equipped with the screwdriver, so that the screwdriver can move up and down and rotate in the horizontal direction to tighten screws at different positions on the main control PCB cover.

2. The assembly fixture for the main control PCB sub-assembly of an automotive automatic gear shifter according to claim 1, characterized in that: The first pressure block is made of rubber.

3. The main control PCB sub-assembly assembly fixture for an automotive automatic gear shifter according to claim 1, characterized in that: The working air pressure of the first cylinder and the second cylinder is 0.5MPa to 0.7MPa.

4. The assembly fixture for the main control PCB sub-assembly of an automotive automatic gear shifter according to claim 1, characterized in that: The torque of the screwdriver can be preset, and the preset torque is 1.0 N·m to 1.6 N·m.

5. The assembly fixture for the main control PCB sub-assembly of an automotive automatic gear shifter according to claim 1, characterized in that: The rotating mechanism includes a connecting rod and a rotating rod. One end of the connecting rod is mounted on the sliding rod via a guide sleeve, allowing the connecting rod to slide up and down along the sliding rod and to rotate around the sliding rod. The other end of the connecting rod is connected to the rotating rod.

6. The assembly fixture for the main control PCB sub-assembly of an automotive automatic gear shifter according to claim 5, characterized in that: An auxiliary rod is vertically installed on the side of the sliding rod, and auxiliary blocks are installed at the upper and lower ends of the auxiliary rod to fix the auxiliary rod and the sliding rod together.

7. The assembly fixture for the main control PCB sub-assembly of an automotive automatic gear shifter according to claim 1, characterized in that: The rotating mechanism includes two optical rods, a sliding block, a first limiting block, and a mounting block. The sliding block is disposed on the sliding rod, allowing it to slide up and down along the sliding rod and rotate around it. The two optical rods are disposed horizontally within the sliding block, allowing them to slide back and forth within the sliding block. The first limiting block is disposed at one end of the two optical rods, and the screwdriver is disposed at the other end of the two optical rods via the mounting block.

8. The assembly fixture for the main control PCB sub-assembly of an automotive automatic gear shifter according to claim 1, characterized in that: The automatic screw-driving mechanism also includes a second limiting block and a third limiting block respectively disposed at the upper and lower ends of the sliding rod to limit the extreme positions of the vertical sliding of the rotating mechanism.

9. The assembly fixture for the main control PCB sub-assembly of an automotive automatic gear shifter according to claim 1, characterized in that: Both the front and rear blocks are L-shaped, with the long sides of the L-shape of the front and rear blocks arranged horizontally and connected to the front and rear sides of the left block, respectively, while the short sides are arranged opposite each other.

10. The assembly fixture for the main control PCB sub-assembly of an automotive automatic gear shifter according to claim 9, characterized in that: The front stop block has a groove on its short side of the "L" shape.

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