Fixing tool for assembling PCB (printed circuit board) of motor

Abstract

The utility model relates to the technical field of motor fitting assembly, in particular to a fixing tool for motor PCB assembly, which comprises a coil assembly, a positioning and heightening assembly, an assembly PCB and a PCB positioning element, a positioning step is arranged on the outer side of the coil assembly, the positioning and heightening assembly is an annular structural member formed by oppositely combining two semicircular positioning and heightening pieces, and the positioning step is arranged on the outer side of the coil assembly. The positioning heightening assembly is provided with a buckling step and a heightening step, and the buckling step is used for being buckled on the positioning step; the PCB positioning element is provided with an assembling positioning groove and an assembling step, the assembling step is used for being buckled on the positioning heightening assembly so that the assembling positioning groove, the positioning machining assembly and the coil assembly can be located on the same axis, the assembling PCB is arranged on the assembling positioning groove, and one face of the assembling PCB abuts against the heightening step. According to the utility model, the specially designed positioning frame-up assembly and the PCB positioning element are matched to be used for assembling the coil assembly of the motor and the PCB, so that the assembling precision and efficiency are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to motor accessory assembling technical field, especially a kind of motor PCB board assembly is fixed tooling. BACKGROUND

[0002] Motor, as a kind of conversion of electrical energy into mechanical energy (or vice versa, i.e. mechanical energy into electrical energy) device, plays a vital role in modern industry and daily life. From a professional point of view, motor mainly works based on electromagnetic induction principle, and its core components usually include stator, rotor and electromagnetic winding, etc. In the motor, the stator as a stationary part, usually equipped with electromagnetic winding, for generating rotating magnetic field. And the rotor as a rotating part, through electromagnetic induction, is forced to rotate in the rotating magnetic field, thereby converting electrical energy into mechanical energy. In addition, motor also has various types to adapt to different application scenarios.

[0003] In the motor assembly process, it is necessary to connect the circuit board on the coil of the motor. The existing assembly process is assembled by manual positioning, which is difficult to master in terms of difficulty, precision and other aspects. Therefore, new design is needed for the existing motor PCB board assembly. UTILITY MODEL CONTENT

[0004] To solve the above problems, the utility model is equipped with a positioning rack high assembly and a PCB board positioning element for the assembly of the coil assembly and the PCB board of the motor, which greatly reduces the assembly difficulty of the PCB board, ensures the assembly precision, facilitates the structure positioning, improves the assembly precision and efficiency of the motor PCB board assembly fixed tooling.

[0005] The technical scheme adopted by the utility model is: a motor PCB board assembly fixed tooling, including coil assembly, positioning rack high assembly, assembly PCB board and PCB board positioning element, the outer side of the coil assembly is provided with positioning step, the positioning rack high assembly is composed of two half circular ring positioning rack high pieces to form a ring structure piece, the positioning rack high assembly is provided with buckling step and rack high step, the buckling step is used for buckling on the positioning step;The PCB board positioning element is provided with assembly positioning groove and assembly step, the assembly step is used for buckling on the positioning rack high assembly, so that the assembly positioning groove is coaxial with the positioning machining assembly and the coil assembly, and the assembly PCB board is arranged on the assembly positioning groove and abuts against the rack high step on one side.

[0006] Further improvement of the above scheme is that the coil assembly includes coil support and winding coil, the coil support is annular, the coil support is annular, and a plurality of winding skeletons are arranged on the inner periphery, and the winding coil is arranged on the winding skeleton;The positioning step is arranged on the outer side of the coil support.

[0007] Further improvement of the above scheme is that one side of the stepped elevation is towards the winding coil, and the other side is in abutment with the assembled PCB board, so that a stepped elevation gap is formed between the winding coil and the assembled PCB board.

[0008] Further improvement of the above scheme is that the positioning stepped elevation is provided with a clamping surface, the clamping surface is provided with a clamping connector, the two positioning stepped elevations are connected through the clamping connector, and the two clamping surfaces are clamped.

[0009] Further improvement of the above scheme is that the clamping connector is a magnetic attraction connector.

[0010] Further improvement of the above scheme is that the outer side of the positioning stepped elevation assembly is provided with a chamfer, and the chamfer is towards the assembly stepped elevation.

[0011] Further improvement of the above scheme is that the assembly stepped elevation is provided with a guide inclined surface at the opening.

[0012] Further improvement of the above scheme is that the PCB board positioning element is provided with a taking and placing groove on both sides of the assembly positioning groove.

[0013] The utility model has the beneficial effects that:

[0014] Compared with the existing motor PCB board assembly, the utility model adopts the positioning stepped elevation of the coil assembly, the buckling stepped elevation of the positioning stepped elevation assembly and the assembly stepped elevation of the PCB board positioning element to form a three-level coupling system, and constructs a composite constraint structure in the axial and radial directions. The closed annular design of the positioning stepped elevation assembly forms a stable reference surface after buckling, so that the assembly positioning groove and the coil assembly automatically maintain axial consistency. The topological structure can simultaneously inhibit the radial deviation and inclination error of the traditional tooling, and ensure that the PCB board installation position accurately matches the electrical contact point layout of the coil group. The clamping type semicircular ring structure of the positioning stepped elevation assembly breaks through the limitation of the overall design of the traditional tooling, and can quickly complete the assembly operation in a limited space. The split structure avoids space interference with the surrounding coil winding, and only needs to be simply aligned and buckled to complete the assembly and fixation of the tooling body. The lifting space formed by the assembly stepped elevation provides an operation gap for the tooling and a visual operation channel for the subsequent welding / detection process, which significantly reduces the operation intensity of repeated disassembly and adjustment. The assembly positioning groove and the stepped elevation cooperatively form a distributed support system, so that the PCB board always maintains a balanced stress state during assembly. The stepped support structure effectively absorbs assembly stress through physical isolation, avoiding the local deformation risk caused by traditional cantilever fixation. The structural characteristics can ensure that the PCB board maintains a stable form under high-temperature welding and vibration working conditions, and fundamentally eliminates the occurrence conditions of process defects such as virtual connection of welding points.

[0015] The utility model discloses a positioning frame high assembly and PCB board positioning element cooperation are used for the assembly of coil assembly and PCB board of motor, greatly reduced PCB board assembly difficulty, ensure assembly accuracy, and convenient structure positioning, improve assembly accuracy and efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the three -dimensional schematic diagram of fixed tooling for motor PCB board assembly of the utility model;

[0017] Figure 2 It is Figure 1 It is the overhead schematic diagram of fixed tooling for motor PCB board assembly;

[0018] Figure 3 It is Figure 2 It is the section view of A-A;

[0019] Figure 4 It is Figure 1 It is the explosion schematic diagram of fixed tooling for motor PCB board assembly.

[0020] Coil assembly 1, coil support 11, winding skeleton 111, positioning step 112, winding coil 12, positioning frame high assembly 2, positioning frame high piece 21, opposite surface 211, opposite connecting piece 212, buckling step 22, frame high step 23, chamfer 24, assembly PCB board 3, PCB board positioning element 4, assembly positioning groove 41, assembly step 42, guide inclined surface 421, take and place recess 43. DETAILED DESCRIPTION

[0021] In order to facilitate understanding of the utility model, the utility model will be described more fully below with reference to the relevant drawings. The preferred embodiments of the utility model are shown in the drawings. However, the utility model can be realized in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the utility model more thorough and comprehensive.

[0022] It should be noted that when an element is referred to as being "fixed" to another element, it can be directly on the other element or there can be intervening elements. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements can be present.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the utility model belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used in this specification and the appended claims, the singular forms "a", "an" and "the" include plural referents unless the content clearly dictates otherwise. Figures 1-4As shown, in one embodiment of the utility model, a kind of motor PCB board assembly is fixed tool, including coil assembly 1, positioning frame high component 2, assembly PCB board 3 and PCB board positioning element 4, the outer side of coil assembly 1 is provided with positioning step 112, positioning frame high component 2 is made of two half circular ring positioning frame high piece 21 and is closed to form ring structure piece, positioning frame high component 2 is provided with buckling step 22 and frame high step 23, the buckling step 22 is used to be buckled on positioning step 112;PCB board positioning element 4 is provided with assembly positioning groove 41 and assembly step 42, the assembly step 42 is used to be buckled on positioning frame high component 2, so that assembly positioning groove 41 with positioning processing component and coil assembly 1 is in the same axis, assembly PCB board 3 is arranged on assembly positioning groove 41 and one side is abutted to frame high step 23.The utility model uses the positioning step 112 of coil assembly 1, the buckling step 22 of positioning frame high component 2 and the assembly step 42 of PCB board positioning element 4 form three-stage coupling system, and constructs the composite constraint structure of axial and radial.The closed ring design of positioning frame high component 2 forms stable datum plane after buckling, so that assembly positioning groove 41 and coil assembly 1 automatically keep axial consistency.The topological structure can simultaneously inhibit the radial deviation and inclination error of traditional tooling, ensure that the installation position of PCB board is accurately matched with the electrical contact layout of coil group.The closing half circular ring structure of positioning frame high component 2 breaks through the limitation of the overall design of traditional tooling, and assembly operation can be quickly completed in limited space.The split structure avoids space interference with surrounding coil winding, and only needs to be buckled after simple alignment to complete the assembly and fixation of tooling body.The lifting space formed by cooperation frame high step 23 not only leaves operation gap for tooling, but also provides visual operation channel for subsequent welding / detection process, significantly reduces the operation intensity of repeated disassembly and adjustment.Assembly positioning groove 41 and frame high step 23 cooperatively form distributed support system, so that PCB board always maintains balanced stress state during assembly process.Step-by-step support structure effectively absorbs assembly stress by physical isolation mode, avoids the risk of local deformation caused by traditional cantilever fixation.The structural characteristics can ensure that PCB board maintains stable form under high-temperature welding and vibration working conditions, fundamentally eliminates the occurrence conditions of process defects such as virtual connection of welding point.

[0024] In the above embodiment, the annular split positioning frame high assembly 2 breaks through the space limitation, adopts two half circular ring components to be matched and installed, realizes the quick disassembly and assembly of the tool body, ensures the coaxial accuracy of the annular structure, and avoids the problem that the integral tool is difficult to carry out assembly in the small size motor set. The axial interlocking design of the buckling step 22 and the positioning step 112 establishes the initial positioning reference, is supplemented by the vertical bearing function of the frame heightening step 23, constructs the three-dimensional space constraint system, makes the assembly positioning groove 41 and the coil assembly 1 form a space self-calibration system, and the XYZ three-axis deviation is synchronously eliminated. The design that one side of the PCB plate contacts the frame heightening step 23 forms physical limiting, provides a stable support plane, offsets the welding thermal deformation stress through rigid contact, and compared with the traditional suspension type fixing mode, can reduce more than 80% of the welding displacement.

[0025] The coil assembly 1 comprises a coil support 11 and a winding coil 12, the coil support 11 is annular, the coil support 11 is annular and is provided with a plurality of winding skeletons 111 on the inner periphery, and the winding coil 12 is arranged on the winding skeleton 111; the positioning step 112 is arranged on the outer side of the coil support 11. In the embodiment, the structure that the annular coil support 11 integrates the winding skeleton 111 optimizes the spatial layout of the electromagnetic assembly, makes the magnetic field axis generated by the winding coil 12 automatically coincide with the tool positioning reference, and reduces the influence of electromagnetic interference on the PCB control signal from the source. The coaxial arrangement of the outer positioning step 112 and the winding skeleton 111 realizes function integration, naturally forms a mechanical positioning reference while completing the winding positioning function, and eliminates the redundant process of separately processing the positioning structure in the traditional scheme.

[0026] One side of the frame heightening step 23 faces the winding coil 12, the other side abuts against the assembly PCB plate 3, so that the frame heightening gap is formed between the winding coil 12 and the assembly PCB plate 3. In the embodiment, the gap region formed by lifting the PCB plate to the upper side of the winding coil 12 through the frame heightening step 23 provides sufficient vertical working space for the welding equipment. In the traditional close contact structure, the welding gun and the coil are easy to interfere, and the design can avoid the pollution of the coil by welding splashes.

[0027] The positioning frame heightening piece 21 is provided with a matched surface 211, the matched surface 211 is provided with a matched connecting piece 212, the two positioning frame heightening pieces 21 are connected through the matched connecting piece 212, and the two matched surfaces 211 are attached. In the embodiment, the combination of the flatness control of the matched surface 211 and the connecting piece creates a new type of assembly interface, ensures the quick disassembly and assembly of the split structure, and eliminates the gap error of the traditional buckle connection through surface contact. The pre-tightening force generated by the connecting piece can automatically compensate the material deformation, so that the two half circular ring assemblies still maintain a stable annular closed form under the difference of the thermal expansion coefficients.

[0028] The joint connector 212 is a magnetic attraction connector. In the embodiment, the magnetic attraction connector avoids the damage risk of threaded fastening to the tool structure, and the single disassembly and assembly time is shorter, which is more convenient, and is particularly suitable for high-frequency use scenarios.

[0029] The outer side of the positioning frame height assembly 2 is provided with a chamfer 24, which is towards the assembly step 42. In the embodiment, the chamfer 24 forms a tapered guide surface, so that the assembly gap tolerance of the positioning frame height assembly 2 and the PCB positioning element is enlarged. The technical requirements of the operator for precise assembly are reduced.

[0030] The assembly step 42 is provided with a guide inclined surface 421 at the opening. In the embodiment, the inclined surface generates a transverse component force at the initial assembly stage, and automatically corrects the axial deviation of the tool assembly.

[0031] The PCB positioning element 4 is provided with a taking and placing groove 43 on both sides of the assembly positioning groove 41. In the embodiment, the taking and placing groove 43 formed on both sides of the assembly positioning groove 41 forms a special disassembly force point, so that the PCB positioning element 4 can be taken out after the assembly is completed. Then the joint connector 212 can also be taken out by the separation of the magnetic attraction element.

[0032] The above embodiments only express several embodiments of the present application, and the description is more specific and detailed, but it cannot be understood as the limitation of the scope of the present application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which belong to the protection scope of the present application. Therefore, the protection scope of the present application patent should be subject to the appended claims.

Claims

1. A fixing fixture for assembling a motor PCB board, characterized in that: The device includes a coil assembly, a positioning and raising assembly, an assembly PCB board, and a PCB board positioning element. The coil assembly has a positioning step on its outer side. The positioning and raising assembly consists of two semi-circular positioning and raising parts joined together to form a ring structure. The positioning and raising assembly has a snap-fit ​​step and a raising step, with the snap-fit ​​step used to snap onto the positioning step. The PCB board positioning element has an assembly positioning groove and an assembly step, with the assembly step used to snap onto the positioning and raising assembly so that the assembly positioning groove is on the same axis as the positioning and processing assembly and the coil assembly. The assembly PCB board is placed on the assembly positioning groove and one side abuts against the raising step.

2. The fixture for assembling a motor PCB board according to claim 1, characterized in that: The coil assembly includes a coil support and a winding coil. The coil support is annular and has multiple winding frames on its inner circumference. The winding coil is disposed on the winding frames. The positioning step is disposed on the outer side of the coil support.

3. The fixture for assembling a motor PCB board according to claim 2, characterized in that: One side of the raised step faces the winding coil, and the other side abuts against the assembly PCB board, so that a raised gap is formed between the winding coil and the assembly PCB board.

4. The fixture for assembling a motor PCB board according to claim 1, characterized in that: The positioning support is provided with mating surfaces, and the mating surfaces are provided with mating connectors. The two positioning support components are connected by the mating connectors, so that the two mating surfaces fit together.

5. The fixture for assembling a motor PCB board according to claim 4, characterized in that: The mating connector is a magnetic connector.

6. The fixture for assembling a motor PCB board according to claim 1, characterized in that: The outer side of the positioning and raising component is chamfered, and the chamfer faces the assembly step.

7. The fixture for assembling a motor PCB board according to claim 1, characterized in that: The opening of the assembly step is provided with a guide ramp.

8. The fixture for assembling a motor PCB board according to claim 1, characterized in that: The PCB board positioning element is provided with pick-and-place grooves on both sides of the assembly positioning groove.

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