Brushless motor circuit board welding clamp

Abstract

The utility model discloses a brushless motor circuit board welding fixture which comprises a base, a height adjusting block, a U-shaped limiting block, a stator clamping block, a limiting rod, a circuit board clamping block and a positioning elastic piece, the height adjusting block is arranged in the center of the end face of the base, and the U-shaped limiting block parallel to the base is arranged at the top of the height adjusting block. A stator clamping block is arranged at the top of the U-shaped limiting block, limiting rods parallel to each other are arranged on the two sides of the stator clamping block and used for enabling a motor stator to abut against the top of the U-shaped limiting block for positioning, circuit board clamping blocks are arranged on the stator clamping block and the top of the stator clamping block, and positioning elastic pieces parallel to each other are clamped on the two sides of the bottom of the stator clamping block. The positioning elastic sheet forces the circuit board to be attached to the limiting rod for positioning; the motor stator is clamped into the U-shaped groove in the outer side of the U-shaped limiting block for positioning, and the circuit board is placed between the positioning elastic piece and the limiting rod for positioning, so that the motor and the circuit board can be relatively fixed in the welding process, and the welding consistency of the motor and the circuit board is kept.

Description

Technical Field

[0001] The utility model relates to the technical field of welding jigs, in particular to a welding jig for a brushless motor circuit board. Background Art

[0002] In the manufacturing process of a brushless motor, the rotor is first installed in the stator assembly, and then electronic components are welded onto the circuit board. The circuit board is installed through the motor shaft at the opening of the stator assembly. Finally, accessories such as end caps are assembled into the brushless motor. During the process of installing the circuit board at the opening of the stator assembly, it is also necessary to weld the circuits inside the stator assembly to the circuit board. During the welding process, the operator needs to first fix the stator assembly, put the circuit board into the opening of the stator assembly with one hand and press it with the hand, and hold the soldering iron with the other hand to weld the circuit board. Such an operation is time-consuming and laborious, and there is a certain deviation in the position of the welded circuit board relative to the motor stator. Therefore, a welding jig for a brushless motor circuit board is designed to solve the above problems. Summary of the Utility Model

[0003] Aiming at the deficiencies of the existing welding jigs, the purpose of the utility model is to provide a welding jig for a brushless motor circuit board, which has the advantages of maintaining welding consistency and being applicable to clamping and positioning different models of brushless motors.

[0004] To achieve the above purpose, a technical solution adopted by the utility model is: a welding jig for a brushless motor circuit board, including a base, a height adjustment block, a U-shaped limit block, a stator clamping block, a limit rod, a circuit board clamping block and a positioning spring piece. The height adjustment block is provided at the center of the end face of the base. The U-shaped limit block parallel to the base is provided at the top of the height adjustment block. The stator clamping block is provided at the top of the U-shaped limit block. The limit rods parallel to each other are provided on both sides of the stator clamping block. The limit rods are used to abut the motor stator against the top of the U-shaped limit block for positioning. The circuit board clamping block is provided at the top of the stator clamping block. The positioning spring pieces parallel to each other are clamped on both sides of the bottom of the stator clamping block. The positioning spring pieces force the circuit board to fit against the limit rods for positioning.

[0005] Preferably, the outer side of the U-shaped limit block has a U-shaped groove for clamping the motor stator, and the U-shaped groove also has a rib radially extending for positioning the motor stator.

[0006] Preferably, the root of the limit rod has a limit edge radially protruding for positioning the placement position of the circuit board.

[0007] Preferably, the height of the height adjustment block is h, where 100mm ≥ h ≥ 10mm; by using height adjustment blocks with different heights and U-shaped limit blocks with different U-shaped groove sizes, the jig is applicable to brushless motors of different specifications.

[0008] Preferably, the circuit board clamping block is detachably fixed on the top of the stator clamping block through bolts, the stator clamping block is detachably fixed on the top of the U-shaped limiting block through bolts, and the U-shaped limiting block and the height adjusting block are fixed on the end face of the base through bolts;

[0009] The beneficial effects of the present utility model are as follows: 1. By clamping the motor stator into the U-shaped groove outside the U-shaped limiting block for positioning and placing the circuit board between the positioning elastic sheet and the limiting rod for positioning, the motor and the circuit board can be relatively fixed during the welding process, so as to maintain the consistency of the welding of the two; 2. By using height adjusting blocks with different heights and U-shaped limiting blocks with different U-shaped groove sizes, the fixture is applicable to brushless motors of different specifications. Description of the Drawings

[0010] Figure 1 is a three-dimensional state structural view of the present utility model;

[0011] Figure 2 is a three-dimensional state structural view of the U-shaped limiting block of the present utility model;

[0012] Figure 3 is a three-dimensional structural view of the connection state of the limiting rod and the stator clamping block of the present utility model. Specific Embodiments

[0013] The following describes in detail the preferred embodiments of the present utility model with reference to the accompanying drawings, so that the advantages and features of the present utility model can be more easily understood by those skilled in the art, thereby making the protection scope of the present utility model more clearly defined.

[0014] It should be noted that in the description of the present utility model, the terms indicating the direction or positional relationship such as "upper", "lower", "left", "right", "inner", "outer", etc. are based on the direction or positional relationship shown in the drawings. This is only for convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0015] In addition, it should also be noted that in the description of the present utility model, unless otherwise clearly defined and limited, the terms "installed", "connected", "connected", "provided with", "set" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two elements. For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0016] Please refer to Figures 1 to 3 , the embodiments of the present utility model include:

[0017] A brushless motor circuit board welding fixture, comprising a base 1, a height adjustment block 2, a U-shaped limit block 3, a stator clamp block 4, a limit rod 5, a circuit board clamp block 6 and a positioning spring piece 7. A height adjustment block 2 is provided at the center of the end face of the base 1. A U-shaped limit block 3 parallel to the base 1 is provided at the top of the height adjustment block 2. A stator clamp block 4 is provided at the top of the U-shaped limit block 3. Two mutually parallel limit rods 5 are provided on both sides of the stator clamp block 4. The limit rods 5 are used to abut the motor stator against the top of the U-shaped limit block 3 for positioning. A circuit board clamp block 6 is provided at the top of the stator clamp block 4. Two mutually parallel positioning spring pieces 7 are clamped on both sides of the bottom of the stator clamp block 4. The positioning spring pieces 7 force the circuit board to fit against the limit rods 5 for positioning;

[0018] The outer side of the U-shaped limit block 3 has a U-shaped groove 31 for clamping the motor stator, and the U-shaped groove 31 also has a rib 32 radially protruding for positioning the motor stator;

[0019] The root of the limit rod 5 has a limit edge 51 radially protruding for positioning the placement position of the circuit board;

[0020] The height of the height adjustment block 2 is h, where 100mm ≥ h ≥ 10mm; by using height adjustment blocks 2 with different heights and U-shaped limit blocks 3 with different U-shaped groove 31 sizes, the fixture can be adapted to brushless motors of different specifications;

[0021] The circuit board clamp block 6 is detachably fixed to the top of the stator clamp block 4 by bolts. The stator clamp block 4 is detachably fixed to the top of the U-shaped limit block 3 by bolts. The U-shaped limit block 3 and the height adjustment block 2 are fixed to the end face of the base 1 by bolts;

[0022] Through the above settings, in the actual working process, its specific working principle is as follows:

[0023] When welding the motor and the motor circuit board, the motor stator is clamped into the U-shaped groove 31 on the outer side of the U-shaped limit block 3, and the rib 32 in the U-shaped groove 31 positions the motor stator; the circuit board is placed between the positioning spring pieces 7 and the limit rods 5, and the positioning spring pieces 7 force the circuit board to fit against the limit rods 5 for positioning. During the welding process, the motor and the circuit board can be relatively fixed, so as to achieve the consistency of the welding of the two. After welding, the motor stator is clamped and pulled out radially outward to complete the disassembly;

[0024] When different models of motors and motor circuit boards need to be welded, by using height adjustment blocks 2 with different heights and U-shaped limit blocks 3 with different U-shaped groove 31 sizes, the fixture can be adapted to brushless motors of different specifications;

[0025] The above are only embodiments of the present utility model, and thus do not limit the patent scope of the present utility model. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied in other related technical fields, shall be similarly included within the patent protection scope of the present utility model.

Claims

1. A brushless motor circuit board welding fixture, characterized in that: It includes a base, a height adjustment block, a U-shaped limit block, a stator clamp block, a limit rod, a circuit board clamp block and a positioning spring piece. The center of the end surface of the base is provided with a height adjustment block, the top of the height adjustment block is provided with a U-shaped limit block parallel to the base, the top of the U-shaped limit block is provided with a stator clamp block, both sides of the stator clamp block are provided with limit rods parallel to each other, the limit rods are used to position the motor stator against the top of the U-shaped limit block, the stator clamp block and the top are provided with a circuit board clamp block, and both sides of the bottom of the stator clamp block are clamped with positioning spring pieces parallel to each other, and the positioning spring pieces force the circuit board to fit the limit rod for positioning.

2. A brushless motor circuit board welding fixture according to claim 1, characterized in that: The outer side of the U-shaped limiting block is provided with a U-shaped groove for clamping into the motor stator, and the inside of the U-shaped groove is also provided with a radially extending convex rib for positioning the motor stator.

3. A brushless motor circuit board welding fixture according to claim 1, characterized in that: The base of the limiting rod has a radially protruding limiting edge for locating the placement position of the circuit board.

4. A brushless motor circuit board welding fixture according to claim 1, characterized in that: The height of the height adjustment block is h, wherein 100 mm ≥ h ≥ 10 mm.

5. A brushless motor circuit board welding fixture according to claim 1, characterized in that: The circuit board clamp block is detachably fixed to the top of the stator clamp block by bolts, the stator clamp block is detachably fixed to the top of the U-shaped limit block by bolts, and the U-shaped limit block and the height adjustment block are fixed to the end surface of the base by bolts.

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