CN223789782U

CN223789782U - A PCB board welding structure for a brushless motor

Info

Publication number: CN223789782U
Application number: CN202520214125.8U
Authority: CN
Inventors: 刘敬; 邹世旺
Original assignee: SUZHOU SANDE PRECISION MACHINERY CO Ltd
Current assignee: SUZHOU SANDE PRECISION MACHINERY CO Ltd
Priority date: 2025-02-11
Filing date: 2025-02-11
Publication date: 2026-01-13
Anticipated expiration: 2035-02-11

Abstract

This utility model relates to a PCB board welding structure for brushless motors, comprising: a conveying assembly, which includes a support plate spaced apart, a fixture plate movably disposed on top of the support plate, and a limiting mechanism fixed on top of the fixture plate; and a lifting assembly, which includes a connecting plate fixed to the bottom of the fixture plate, a second through slot penetrating the connecting plate, a transition plate movably disposed below the connecting plate, and a lifting mechanism movably disposed on top of the transition plate. In the post-welding process of the PCB board for brushless motors, the conveying assembly first transports the motor housing to the welding station, and the lifting assembly lifts the motor housing on the support column until the PCB board contacts the pressure bar. At this point, the operator can perform post-welding on the PCB board without removing the product from the conveying station or using additional fixtures to fix the motor housing, thus improving welding efficiency and reducing costs.

Description

PCB board welded structure for brushless motor

Technical Field

The utility model belongs to the technical field of motor assembly, and particularly relates to a PCB welding structure for a brushless motor.

Background

The brushless motor consists of a motor main body and a driver, is a typical electromechanical integrated product, and a PCB (printed circuit board) inside the brushless motor is mainly used for bearing key components such as an electronic control circuit, a sensor, a driving circuit and the like. These parts are integrated through the PCB board for the motor can be through electronic mode control rotational speed and torque, and through sensor feedback positional information, thereby realize accurate control, consequently brushless motor is in the assembly process, and is high to the equipment requirement of inside PCB board.

After the PCB is assembled in the motor casing of the brushless motor, the PCB needs to be subjected to 'post-welding'. Post-soldering, as the name implies, is a soldering operation performed after the PCB assembly is completed. This typically involves adding additional components or performing repair work on the already assembled circuit board. Because some components may not be finished in the early stage of soldering due to size, shape or position limitations during PCBA board manufacturing, repair soldering is required in the later stage. In addition, when errors or defective products occur in the early welding process, post welding is also an effective means for repairing.

Through carrying out "postweld" to the PCB board, have following benefit:

Firstly, the production flexibility is improved, through post-welding, engineers can adjust the layout of elements on the circuit board according to actual requirements so as to meet the requirements of product performance, functions or cost and the like;

In the early stage of welding, defective products possibly occur due to various reasons, and the post welding process can only repair the problem area without dismantling the whole circuit board, so that the waste is reduced and the production cost is reduced;

Finally, the post-welding can also improve the product quality, namely, the welding quality of each element on the circuit board can be ensured through careful post-welding operation, so that the reliability and the stability of the product are improved.

On the existing brushless motor assembly production line, when the PCB is welded, the motor casing needs to be taken down from the production line, then the motor casing is fixed by assisting with a corresponding jig, the position of the PCB inside the motor casing is prevented from shifting when the motor casing is welded, and the motor casing is put back on the assembly production line after the welding is completed. Therefore, the operation procedures and steps are increased, the assembly and welding time is prolonged, and corresponding jigs are needed, so that the production cost is increased.

Disclosure of utility model

The utility model provides a PCB welding structure for a brushless motor, which solves the defects of low welding efficiency and high cost in the prior art.

In order to achieve the above purpose, the technical scheme adopted by the utility model is that the PCB board welding structure for the brushless motor comprises a motor shell, lugs integrally arranged on the outer peripheral surface of the motor shell in a surrounding way, limiting holes penetrating through the lugs and a PCB board arranged in the motor shell, wherein the PCB board welding structure comprises:

The conveying assembly comprises supporting plates arranged at intervals, jig plates movably arranged at the tops of the supporting plates and limiting mechanisms fixed at the tops of the jig plates, and the motor casing is placed on the limiting mechanisms;

The jacking assembly comprises a connecting plate fixed at the bottom of the jig plate, a second through groove penetrating through the connecting plate, a transition plate arranged below the connecting plate in a lifting manner and a jacking mechanism arranged at the top of the transition plate in a lifting manner, and the jacking mechanism penetrates through the second through groove to jack up a motor casing on the limiting mechanism;

The pressing assembly comprises a frame body erected on the conveying assembly, an adjusting plate adjustably arranged at the top of the frame body and a pressing strip integrally connected to the bottom of the adjusting plate and used for pressing the PCB.

Optimally, the limiting mechanism comprises a mounting block embedded in the jig plate, a first through groove penetrating through the mounting block, a supporting column annularly arranged at the top of the mounting block and a limiting column integrally connected to the top of the supporting column;

the diameter of the limiting column is smaller than that of the supporting column, the lugs are propped against the top of the supporting column, and the limiting holes are inserted into the limiting column.

Optimally, the jacking mechanism comprises a jacking disc which is arranged at the top of the transition plate in a lifting manner and matched with the second through groove, and a jacking rod which is arranged on the jacking disc in a height-adjustable manner, wherein the jacking disc penetrates through the second through groove, and the motor casing on the limiting mechanism is jacked by the jacking rod.

Optimally, the ejector rod comprises a screw rod screwed on the top disc, a cushion block fixed at the top of the screw rod, an upper adjusting nut and a lower adjusting nut screwed on the screw rod, wherein the upper adjusting nut abuts against the upper surface of the top disc, and the lower adjusting nut abuts against the lower surface of the top disc.

Optimally, the pressing assembly further comprises a first limiting plate and a second limiting plate which are fixed at the top of the frame body at intervals, a limiting groove formed between the first limiting plate and the second limiting plate and an adjusting groove penetrating through the adjusting plate, and the adjusting plate is clamped in the limiting groove.

Optimally, the jacking assembly further comprises a first guide post fixed at the bottom of the connecting plate, a first fixing plate fixed at the bottom of the first guide post, a first guide sleeve embedded in the transition plate and sleeved on the first guide post, a first jacking cylinder fixed on the first fixing plate, a jacking plate connected with the first jacking cylinder and a first fixing post fixed between the jacking plate and the transition plate.

Optimally, the jacking assembly further comprises a second jacking cylinder fixed at the top of the jacking plate and connected with the jacking disc, a second guide sleeve embedded in the transition plate, and a second guide post fixed at the bottom of the jacking disc and penetrating through the second guide sleeve.

Due to the application of the technical scheme, compared with the prior art, the utility model has the following advantages:

When the PCB welding structure for the brushless motor is used for post-welding the PCB, the motor shell is conveyed to the welding station by the conveying component, the motor shell on the support column is jacked up by the jacking component until the PCB is in contact with the pressing strip, at the moment, an operator can post-weld the PCB, the product does not need to be taken down from the conveying station, and meanwhile, an additional jig is not needed to fix the motor shell, so that the welding efficiency is improved, and the investment of cost is reduced.

Drawings

FIG. 1 is a schematic diagram of a brushless motor;

FIG. 2 is a schematic diagram of the structure of the present utility model;

FIG. 3 is a top view of the present utility model;

FIG. 4 is a schematic view of the structure of the conveying assembly of the present utility model;

FIG. 5 is a schematic view of a jacking assembly according to the present utility model;

FIG. 6 is a schematic view of another angle of the jacking assembly of the present utility model;

FIG. 7 is a schematic view of a portion of a jacking assembly according to the present utility model;

FIG. 8 is a schematic structural view of a pressing assembly according to the present utility model;

Reference numerals illustrate:

1. A transport assembly; 101, a supporting plate, 102, a jig plate, 103, a positioning hole, 104, a mounting block, 105, a first through groove, 106, a supporting column, 107 and a limiting column;

2. A jacking assembly; 201, a first fixing plate, 202, a first guide post, 203, a connecting plate, 204, a positioning post, 205, a second through groove, 206, a first jacking cylinder, 207, a jacking plate, 208, a first fixing post, 209, a first guide sleeve, 210, a transition plate, 211, a second jacking cylinder, 212, a second guide sleeve, 213, a second guide post, 214, a top plate, 215, a screw, 216, an upper adjusting nut, 217, a lower adjusting nut, 218, a cushion block;

3. Pressing assembly, 301, second fixing plate, 302, second fixing column, 303, top plate, 304, third through groove, 305, first limit plate, 306, second limit plate, 307, adjusting plate, 308, adjusting groove, 309, pressing bar;

4. the motor comprises a motor shell, a PCB (printed circuit board), a lug, a limit hole and a lug.

Detailed Description

The utility model will be further described with reference to examples of embodiments shown in the drawings.

Fig. 2 and 3 are schematic diagrams of a PCB board welding structure for a brushless motor according to the present utility model, which includes a conveying assembly 1, a jacking assembly 2, and a pressing assembly 3. The conveying assembly 1 is used for conveying the motor casing 4, when the motor casing 4 is conveyed to the welding station, the jacking assembly 2 jacks up the motor casing 4 on the conveying assembly 1, the PCB 5 inside the motor casing 4 is propped against the pressing assembly 3, the jacked PCB 5 is limited, and when the PCB 5 is welded, the welding effect is prevented from being influenced by shaking.

As shown in fig. 4, the conveying assembly 1 includes a support plate 101, a jig plate 102, a positioning hole 103, a mounting block 104, a first through groove 105, a support column 106, and a stopper column 107. The two support plates 101 are fixed on the assembling machine table through aluminum profiles (specifically, the aluminum profiles are fixed on the assembling machine table through a welding mode, the support plates 101 are fixed at the tops of the aluminum profiles through a welding mode, the support plates 101 are supported through the aluminum profiles, and the tops of the assembling machine table are provided with grooves for avoiding the position of the jacking assembly 2).

The two supporting plates 101 are arranged at intervals, namely, a space is reserved between the two supporting plates 101, so that the jacking assembly 2 can be conveniently jacked. The jig plate 102 is movably disposed at the top of the supporting plate 101, a ball screw is fixed at the top of the supporting plate 101, the jig plate 102 is fixed on a sliding portion of the ball screw, and the jig plate 102 is driven by the ball screw to move along the length direction of the supporting plate 101, so that the upper motor casing 4 is transferred (the ball screw is a commercially available standard component and is not shown in the figure).

The mounting block 104 is fixed at the top of the jig plate 102 through a screw fastening mode, and the first through groove 105 penetrates through the mounting block 104 and the jig plate 102 in the vertical direction, so that when the jacking component 2 jacks up the motor casing 4, an avoidance space is provided for the ejection action of the jacking component 2. The support columns 106 are integrally and annularly arranged at the top of the mounting block 104, and the support columns 106 are matched with the lugs 6 of the motor casing 4 (as shown in fig. 1, three lugs 6 are integrally and annularly arranged on the peripheral surface of the motor casing 4, so that three support columns 106 are integrally and annularly arranged on the mounting block 104, and the positions of the support columns 106 and the lugs 6 are in one-to-one correspondence).

The spacing post 107 is integrally connected at the top of the support post 106, and the diameter of the spacing post 107 is smaller than the diameter of the support post 106. The spacing post 107 cooperates with spacing hole 7 of lug 6, and in the packaging process, spacing hole 7 of lug 6 inserts on spacing post 107, and lug 6 supports at the top of support column 106 to this supports that realizes motor casing 4, makes things convenient for preceding process to adorn PCB board 5 in motor casing 4.

The locating hole 103 runs through the tool board 102, and the locating hole 103 cooperatees with the reference column 204 in jacking subassembly 2, when fixing the connecting plate 203 in the tool board 102 bottom, inserts the reference column 204 at connecting plate 203 top on the locating hole 103 on the tool board 102 earlier, then fixes connecting plate 203 and tool board 102 together through the mode of screw fastening, improves fixed position accuracy.

The jacking component 2 is fixed at the bottom of the jig plate 102, and synchronously moves along with the movement of the jig plate 102, and when the ball screw drives the jig plate 102 to move to a welding station, the motor casing 4 is jacked up by the jacking component 2. As shown in fig. 5 to 7, the jacking assembly 2 includes a first fixing plate 201, a first guide post 202, a connecting plate 203, a positioning post 204, a second through slot 205, a first jacking cylinder 206, a jacking plate 207, a first fixing post 208, a first guide sleeve 209, a transition plate 210, a second jacking cylinder 211, a second guide sleeve 212, a second guide post 213, a top plate 214, a screw 215, an upper adjustment nut 216, a lower adjustment nut 217, and a spacer 218. The positioning column 204 is integrally connected to the top of the connecting plate 203 and is matched with the positioning hole 103 on the jig plate 102, when the fixing is actually performed, the positioning column 204 on the top of the connecting plate 203 is inserted into the positioning hole 103 on the jig plate 102, and then the connecting plate 203 and the jig plate 102 are fixed together in a screw fastening mode, so that the fixing position accuracy is improved.

The second through groove 205 vertically penetrates through the connecting plate 203, the second through groove 205 is matched with the top plate 214, and when the top plate 214 ascends to jack up the motor casing 4 borne on the support column 106, the top plate 214 penetrates through the second through groove 205 to avoid interference with the connecting plate 203.

The first guide posts 202 are fixed at the bottom of the connecting plate 203 in a screw fastening manner, and the first fixing plate 201 is fixed at the bottom of the first guide posts 202 in a screw fastening manner. The first lifting cylinder 206 is fixed on top of the first fixing plate 201 and is used for driving the transition plate 210 to move up and down. The cylinder body of the first jacking cylinder 206 is fixed to the top of the first fixing plate 201 by means of screw fastening, and the piston rod of the first jacking cylinder 206 extends toward a side far away from the first fixing plate 201.

The lifting plate 207 is fixed on a piston rod of the first lifting cylinder 206 in a screw fastening manner, and the lifting plate 207 is driven to move up and down by the first lifting cylinder 206. The first fixing column 208 is fixed on the top of the jacking plate 207 by means of screw fastening, and the transition plate 210 is fixed on the top of the first fixing column 208 by means of screw fastening. The jacking plate 207, the first fixing post 208 and the transition plate 210 are thus fixed as a whole. When the first lifting cylinder 206 drives the lifting plate 207 to move up and down, the transition plate 210 is driven to move up and down synchronously.

The first guiding sleeve 209 is embedded in the transition plate 210 and sleeved on the first guiding post 202, and when the first jacking cylinder 206 drives the transition plate 210 to lift, the first guiding sleeve 209 can lift synchronously along the first guiding post 202, so as to improve the stability of the lifting motion of the transition plate 210.

The cylinder body of the second jacking cylinder 211 is fixed on the top of the jacking plate 207 by means of screw fastening, that is, fixed on one side of the jacking plate 207 away from the first fixing plate 201 (as shown in fig. 7, a through slot is formed on the transition plate 210, so as to facilitate installation of the second jacking cylinder 211). The top plate 214 is fixed on a piston rod of the second jacking cylinder 211 in a screw fastening manner, and the second jacking cylinder 211 drives the top plate 214 to do lifting motion, so as to jack up the motor casing 4 borne on the support column 106.

The second guide sleeve 212 is embedded in the transition plate 210, and the second guide post 213 is fixed at the bottom of the top plate 214 by screw fastening and penetrates through the second guide sleeve 212. When the second lifting cylinder 211 drives the top plate 214 to move up and down, the second guide column 213 is driven to move up and down synchronously along the second guide sleeve 212, so as to improve the stability of the lifting movement of the top plate 214.

The ejector rods are at least three groups and are arranged on the ejector plate 214 in a surrounding manner and used for ejecting the motor casing 4 borne on the supporting column 106. Each set of rams includes a screw 215, an upper adjustment nut 216, a lower adjustment nut 217, and a spacer 218. The top plate 214 is provided with a threaded hole, and the outer circumferential surface of the screw 215 is provided with external threads matched with the threaded hole, so that the height of the screw 215 can be adjusted by screwing the screw 215, the three groups of screws 215 are ensured to be positioned in the same plane, and the motor casing 4 is prevented from being propped up askew when the motor casing 4 on the support column 106 is jacked up.

The upper adjusting nut 216 and the lower adjusting nut 217 are respectively screwed on the screw rod 215, and the upper adjusting nut 216 abuts against the upper surface of the top plate 214, and the lower adjusting nut 217 abuts against the lower surface of the top plate 214. By arranging the upper adjusting nut 216 and the lower adjusting nut 217, the adjusted screw 215 is limited, and the loosening of the screw 215 is avoided so as to change the adjusted position height.

A spacer 218 is fixed to the top of the screw 215, and the diameter of the spacer 218 is larger than the diameter of the screw 215. The motor housing 4 carried on the support column 106 is lifted up by the spacer 218 when the top plate 214 is lifted up. The large diameter spacer 218 may improve stability during jacking.

The pressing assembly 3 is fixed on an assembling machine table and erected on the conveying assembly 1, and the jacking assembly 2 jacks up the motor casing 4 on the supporting column 106 until the PCB 5 abuts against the pressing assembly 3, so that the positioning of the PCB 5 in the motor casing 4 is completed, and the final welding effect is prevented from being influenced by loosening of the PCB 5. As shown in fig. 8, the pressing assembly 3 includes a second fixing plate 301, a second fixing post 302, a top plate 303, a third through slot 304, a first limiting plate 305, a second limiting plate 306, an adjusting plate 307, an adjusting slot 308, and a pressing bar 309. The second fixing plate 301 is fixed to the assembling machine by means of screw fastening.

The second fixing post 302 is fixed on the top of the second fixing plate 301 by means of screw fastening, and the top plate 303 is fixed on the top of the second fixing post 302 and above the jig plate 102 by means of screw fastening. The third through groove 304 penetrates through the top plate 303 to provide an avoidance space for the jacking of the motor casing 4.

The first limiting plate 305 and the second limiting plate 306 are fixed on the top of the top plate 303 in a screw fastening manner, and a limiting groove is formed between the first limiting plate 305 and the second limiting plate 306. The adjusting plate 307 is clamped in the limiting groove, and can move along the limiting groove, so that the position of the adjusting plate on the PCB 5 can be adjusted according to the different welding positions.

The adjusting groove 308 penetrates through the adjusting plate 307, the adjusting groove 308 is in a round rectangular shape, a through hole is formed in the top plate 303, after the position of the adjusting plate 307 is adjusted, a fastening bolt penetrates through the adjusting groove 308 and the through hole, and the other side of the adjusting plate 307 is fixed by the aid of a fastening nut.

The layering 309 is connected in an organic whole in the inboard of regulating plate 307 and extends to in the third tee bend groove 304, and when jacking subassembly 2 jack-up motor casing 4 on the support column 106, layering 309 supports at the top of PCB board 5, avoids PCB board 5 to take place to rock when the welding.

Further, by arranging the first jacking cylinder 206 and the second jacking cylinder 211 to be ejected twice, the requirement of the jacking height is met, and the jacking process is ensured to be more stable.

The working principle of the PCB welding structure for the brushless motor is as follows:

Firstly, the motor shell 4 is conveyed to a welding station by the conveying component 1, the motor shell 4 on the supporting column 106 is jacked up by the jacking component 2 until the PCB 5 is in contact with the pressing strips 309, at the moment, an operator can perform post-welding treatment on the PCB 5, products do not need to be taken down from the conveying station, and meanwhile, the motor shell 4 does not need to be fixed by using an additional jig, so that the welding efficiency is improved, and the investment of cost is reduced.

The above embodiments are provided to illustrate the technical concept and features of the present utility model and are intended to enable those skilled in the art to understand the content of the present utility model and implement the same, and are not intended to limit the scope of the present utility model. All equivalent changes or modifications made in accordance with the spirit of the present utility model should be construed to be included in the scope of the present utility model.

Claims

1. Brushless motor is with PCB board welded structure, brushless motor includes motor casing (4), integrative ring is established lug (6) on motor casing (4) outer peripheral face, run through spacing hole (7) of lug (6) and install PCB board (5) in motor casing (4), its characterized in that, it includes:

The conveying assembly (1), the conveying assembly (1) comprises supporting plates (101) arranged at intervals, jig plates (102) movably arranged at the tops of the supporting plates (101) and limiting mechanisms fixed at the tops of the jig plates (102), and the motor casing (4) is placed on the limiting mechanisms;

The jacking assembly (2) comprises a connecting plate (203) fixed at the bottom of the jig plate (102), a second through groove (205) penetrating through the connecting plate (203), a transition plate (210) arranged below the connecting plate (203) in a lifting manner, and a jacking mechanism arranged at the top of the transition plate (210) in a lifting manner, wherein the jacking mechanism penetrates through the second through groove (205) to jack up the motor casing (4) on the limiting mechanism;

The pressing assembly (3), the pressing assembly (3) comprises a frame body erected on the conveying assembly (1), an adjusting plate (307) adjustably arranged at the top of the frame body and a pressing strip (309) integrally connected to the bottom of the adjusting plate (307) and used for pressing the PCB (5).

2. The PCB welding structure for the brushless motor is characterized in that the limiting mechanism comprises a mounting block (104) embedded in the jig plate (102), a first through groove (105) penetrating through the mounting block (104), a support column (106) arranged at the top of the mounting block (104) in a surrounding manner and a limiting column (107) integrally connected to the top of the support column (106);

The diameter of the limiting column (107) is smaller than that of the supporting column (106), the lug (6) abuts against the top of the supporting column (106), and the limiting hole (7) is inserted into the limiting column (107).

3. The PCB board welded structure for brushless motor of claim 1, wherein the jacking mechanism comprises a jacking disc (214) which is arranged at the top of the transition plate (210) in a lifting manner and matched with the second through groove (205) and a jacking rod which is arranged on the jacking disc (214) in a height-adjustable manner, the jacking disc (214) penetrates through the second through groove (205), and the motor casing (4) on the limiting mechanism is jacked by the jacking rod.

4. The PCB board welded structure for brushless motor of claim 3, wherein the ejector rod comprises a screw rod (215) screwed on the top plate (214), a cushion block (218) fixed on the top of the screw rod (215), and an upper adjusting nut (216) and a lower adjusting nut (217) screwed on the screw rod (215), wherein the upper adjusting nut (216) abuts against the upper surface of the top plate (214), and the lower adjusting nut (217) abuts against the lower surface of the top plate (214).

5. The PCB board welded structure for brushless motor of claim 1, wherein the pressing assembly (3) further comprises a first limiting plate (305) and a second limiting plate (306) fixed at the top of the frame body at intervals, a limiting groove formed between the first limiting plate (305) and the second limiting plate (306), and an adjusting groove (308) penetrating through the adjusting plate (307), wherein the adjusting plate (307) is clamped in the limiting groove.

6. A PCB board welded structure for brushless motor, as set forth in claim 3, characterized in that the jacking component (2) further comprises a first guide post (202) fixed at the bottom of the connecting plate (203), a first fixing plate (201) fixed at the bottom of the first guide post (202), a first guide sleeve (209) embedded in the transition plate (210) and sleeved on the first guide post (202), a first jacking cylinder (206) fixed on the first fixing plate (201), a jacking plate (207) connected with the first jacking cylinder (206) and a first fixing post (208) fixed between the jacking plate (207) and the transition plate (210).

7. The PCB board welded structure for brushless motor of claim 6, wherein the jacking component (2) further comprises a second jacking cylinder (211) fixed at the top of the jacking plate (207) and connected with the top plate (214), a second guide sleeve (212) embedded in the transition plate (210), and a second guide post (213) fixed at the bottom of the top plate (214) and penetrating through the second guide sleeve (212).