Phase adjustment tool for hall plate press fitting

Abstract

The utility model provides a kind of phase adjustment tool for hall plate press fitting, including base;Cantilever assembly, its lower end is rotatably connected with the base;Parallelogram linkage, its first end is hinged to the upper end of the cantilever assembly;Pneumatic spring, its both ends are respectively hinged on the cantilever assembly and the parallelogram linkage;Press fitting component, it is connected with the second end of the parallelogram linkage, and the end of the press fitting component is equipped with replaceable profiling ram. Operator can stably press hall plate into specified position by the tool with one hand, and the synergistic effect of parallelogram linkage and pneumatic spring can realize reliable hovering at any position in space while providing uniform press fitting force, so as to integrate press fitting, phase adjustment and multiple steps of point gluing fixing into one coherent action.

Description

Technical Field

[0001] This utility model relates to the field of Hall plate pressing tooling technology, specifically to a phase adjustment tooling for Hall plate pressing. Background Technology

[0002] In the assembly of motor sensor components, the phase adjustment and pressing of the Hall element are critical processes. Currently, the common process involves the operator placing the sensor component in a testing fixture, detecting a phase deviation, and then manually or with simple tools adjusting the Hall plate's position. This approach has significant drawbacks: due to the lack of dedicated clamping and pressing mechanisms, operators struggle to ensure the Hall plate's levelness and uniform pressing force while adjusting the phase, easily leading to component tilting or uneven stress. Furthermore, the entire adjustment, pressing, and subsequent adhesive fixing process must be performed step-by-step, alternating between hands, making it impossible to reliably fix the component at the precise moment of adjustment. This is not only inefficient but also heavily reliant on the operator's skill, making it difficult to guarantee the consistency of the product's phase difference, ultimately affecting the stability and reliability of the motor's performance. Summary of the Invention

[0003] This utility model proposes a phase adjustment fixture for Hall plate pressing, which solves the problem that in the prior art, due to the lack of a dedicated clamping and pressing mechanism, it is difficult for operators to ensure the levelness of the Hall plate and the uniform pressing force while adjusting the phase, which can easily lead to component tilting or uneven force.

[0004] The technical solution of this utility model is implemented as follows: A phase adjustment fixture for pressing Hall effect plates includes a base; a cantilever assembly, the lower end of which is rotatably connected to the base; a parallelogram linkage mechanism, the first end of which is hinged to the upper end of the cantilever assembly; a pneumatic spring, the two ends of which are respectively hinged to the cantilever assembly and the parallelogram linkage mechanism; and a pressing component, which is connected to the second end of the parallelogram linkage mechanism, the end of which is provided with a replaceable contour pressing head.

[0005] Furthermore, the cantilever assembly includes a lower cantilever rod and a joint box; the lower cantilever rod is rotatably connected to the base via a ball bearing bushing; the joint box is hinged to the top end of the lower cantilever rod.

[0006] Furthermore, the parallelogram linkage mechanism includes a first link and a second link arranged parallel to each other. The first link and the second link are hinged at the same end to the joint box, and the other end is hinged to a cantilever connector.

[0007] Furthermore, the two ends of the gas spring are respectively hinged to the joint box and the first connecting rod.

[0008] Furthermore, the press-fitting component is hinged to the cantilever connector via a fixture connecting block.

[0009] Furthermore, the pressing component includes a pressing rod, which is rotatably disposed within the fixture connecting block via a bearing, and the conforming pressing head is connected to the end of the pressing rod.

[0010] Furthermore, the bearing is a ball bearing.

[0011] Furthermore, both the first and second connecting rods are slotted rods.

[0012] Furthermore, the bottom of the contouring indenter is provided with at least two positioning pins.

[0013] The beneficial effects of the technical solution provided in this application are as follows: 1. This Hall plate pressing phase adjustment fixture overcomes the shortcomings of manual operation in the prior art by setting up a special fixture consisting of a base, cantilever assembly, parallelogram linkage mechanism, pneumatic spring and pressing components. The operator can use this fixture to smoothly press the Hall plate into the designated position with one hand. The synergistic effect of its parallelogram linkage mechanism and pneumatic spring provides uniform pressing force while achieving reliable suspension at any position in space, thus integrating multiple steps of pressing, phase adjustment and glue fixing into a continuous action.

[0014] 2. The Hall plate pressing uses a phase adjustment fixture. The rotational connection between the ball bushing and the lower cantilever rod provides horizontal rotational freedom. The parallelogram mechanism formed by the joint box and the parallel first and second connecting rods, in conjunction with the pneumatic spring, provides constant vertical force pressing for the contour pressing head and achieves reliable hovering at any position in space. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the phase adjustment tooling for pressing Hall plates according to this utility model; Figure 2 This is an exploded view of the phase adjustment tooling for pressing Hall plates according to this utility model; Figure 3 This is a half-sectional schematic diagram of the connecting block of the fixture of this utility model; Figure 4 This is a partially enlarged schematic diagram of the conformal pressure head of this utility model.

[0017] In the diagram: 1. Locking nut, 2. Fixing screw, 3. Lower clamping plate, 4. Upper clamping plate, 5. Columnar base, 6. Ball bushing, 7. Lower cantilever rod, 8. Joint box, 9. First connecting rod, 10. Gas spring, 11. Second connecting rod, 12. Cantilever connector, 13. Fixture connecting block, 14. Pressure rod, 15. Ball bearing, 16. Contouring pressure head. Detailed Implementation

[0018] The technical solution of this utility model will be clearly and completely described below with reference to its embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0019] The specific embodiments of this utility model are as follows: Figures 1 to 4 As shown, the Hall plate pressing phase adjustment fixture adopts a design concept that combines mechanical linkage and pneumatic suspension. Its core structure is organically composed of four major modules: base system, cantilever system, parallelogram linkage system and pressing execution system.

[0020] The base system serves as the installation foundation for the entire tooling. Its columnar base 5 is securely connected to the worktable surface via a fixing screw 2 at the bottom. At the lower part of the columnar base 5, a lower clamping plate 3 and a matching locking nut 1 are sequentially fitted onto the fixing screw 2. Tightening the locking nut 1 secures the tooling. A ball bearing bushing 6 is precisely fitted to the top of the columnar base 5. The outer side of this bushing is axially positioned via an upper clamping plate 4. This structure forms the reference for the horizontal rotational movement of the tooling.

[0021] The core load-bearing component of the cantilever system is the lower cantilever rod 7, whose lower end is fixedly connected to the inner ring of the ball bushing 6, thereby enabling the entire cantilever system to rotate horizontally 360 degrees relative to the columnar base 5. The upper end of the lower cantilever rod 7 is hinged to a joint box 8 via a pin. This joint box 8 serves as the mounting base for subsequent linkage mechanisms, and its internal space accommodates multiple hinge points.

[0022] The parallelogram linkage system is crucial for ensuring press-fit accuracy. It consists of a first link 9 and a second link 11. These two links are preferably slotted rods to achieve lightweight design while maintaining structural strength. The rear ends of the first link 9 and the second link 11 are hinged to the same side wall of the joint box 8, while their front ends are hinged to a cantilever connector 12, thus precisely forming a moving parallelogram mechanism.

[0023] To achieve reliable hovering of the tooling at any position in space, this invention incorporates a pneumatic spring 10. The piston rod end of the pneumatic spring 10 is hinged to a pin on the inner wall of the joint box 8 via a pin sleeve. Correspondingly, the cylinder end of the pneumatic spring 10 is hinged to a pin hole in the first connecting rod 9 via another pin, ensuring the positional accuracy and connection strength of the hinge points at both ends of the pneumatic spring 10. This installation method, connecting the cylinder end of the pneumatic spring 10 to the first connecting rod 9 and the piston rod end to the inner wall of the joint box 8, constitutes the most efficient lever arm configuration, allowing the pneumatic spring 10 to optimally balance the torque generated by the cantilever's own weight, thereby providing a smooth and reliable hovering force throughout the entire working space.

[0024] The press-fitting execution system is connected to the aforementioned parallelogram linkage system via a cantilever connector 12. Specifically, the cantilever connector 12 is hinged together with the first link 9 and the second link 11; the side of the cantilever connector 12 away from the link is designed as a fork structure, which is hinged to the fixture connecting block 13 via a pivot, giving the press-fitting terminal an additional pitch freedom, which can better adapt to press-fitting requirements at different angles.

[0025] The fixture connecting block 13 has a precision hole inside, into which a ball bearing 15 is embedded. The upper part of the pressure rod 14 passes through the inner ring of the ball bearing 15, allowing the pressure rod 14 to rotate smoothly in the circumferential direction within the fixture connecting block 13. The axial position of the pressure rod 14 is adjusted and locked by a fixing screw 2 passing through the side wall of the fixture connecting block 13 and a locking nut 1 screwed on the pressure rod 14, to accommodate different pressing height requirements.

[0026] At the end of the pressure rod 14, a detachable contouring pressure head 16 is connected. The bottom of the contouring pressure head 16 is designed with at least two precision positioning pins according to the specifications of the Hall plate to be pressed. These pins can be accurately inserted into the corresponding mounting holes of the Hall plate during pressing, achieving precise initial positioning.

[0027] In actual operation, the operator first selects the appropriate contouring indenter 16 according to the model of the Hall plate and installs it at the end of the pressure rod 14. Then, by holding the pressure rod 14 or the fixture connecting block 13 with one hand, the contouring indenter 16 is easily moved above the Hall plate by rotating the lower cantilever rod 7 within the ball bushing 6.

[0028] Next, the operator presses down on the entire cantilever system. The positioning pins at the bottom of the contouring head 16 first insert into the positioning holes of the Hall plate, completing the initial alignment. Continuous, gentle downward pressure causes the parallelogram linkage mechanism to move, compressing the pneumatic spring 10 and storing energy. During this process, the parallelogram mechanism ensures that the contouring head 16 always presses down smoothly in a nearly vertical posture, ensuring that the Hall plate is pressed into the designated mounting slot of the motor stator component with uniform force, effectively preventing component damage or inaccurate positioning caused by tilted pressing.

[0029] Once the Hall plate is pressed into place, the operator can fine-tune the position of the cantilever based on the phase test results. Due to the suspension effect of the pneumatic spring 10, the fixture can be stably maintained in the adjusted spatial position without external locking. At this point, the operator's other hand can immediately perform the adhesive dispensing and fixing operation, integrating the previously separate steps of pressing, phase adjustment, and adhesive dispensing into a single, efficient, and continuous workflow.

[0030] In summary, this utility model, through the synergistic effect of the above-mentioned components, especially the unique combination of the parallelogram linkage mechanism and the pneumatic spring, and supplemented by the multi-degree-of-freedom hinge and rotation design, successfully solves the core problems of manual operation in the prior art, such as difficulty in ensuring levelness, uneven pressing force, and poor process continuity, and realizes high-precision and high-efficiency Hall plate pressing and phase adjustment operations.

[0031] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A phase adjustment fixture for pressing Hall plates, characterized in that, include Base (5); The cantilever assembly has its lower end rotatably connected to the base (5); A parallelogram linkage mechanism, the first end of which is hinged to the upper end of the cantilever assembly; A pneumatic spring (10) has its two ends hinged to the cantilever assembly and the parallelogram linkage mechanism, respectively. A press-fitting component is connected to the second end of the parallelogram linkage mechanism, and the end of the press-fitting component is provided with a replaceable contour press head (16).

2. The phase adjustment fixture for Hall plate pressing as described in claim 1, characterized in that, The cantilever assembly includes a lower cantilever rod (7) and a joint box (8); the lower cantilever rod (7) is rotatably connected to the base (5) via a ball bushing (6); the joint box (8) is hinged to the top of the lower cantilever rod (7).

3. The phase adjustment fixture for Hall plate pressing as described in claim 2, characterized in that, The parallelogram linkage mechanism includes a first link (9) and a second link (11) arranged in parallel to each other. The same end of the first link (9) and the second link (11) are hinged to the joint box (8), and the other end is hinged to a cantilever connector (12).

4. The phase adjustment fixture for Hall plate pressing as described in claim 3, characterized in that, The two ends of the gas spring (10) are respectively hinged to the joint box (8) and the first connecting rod (9).

5. The phase adjustment fixture for Hall plate pressing as described in claim 3, characterized in that, The press-fit component is hinged to the cantilever connector (12) via a fixture connecting block (13).

6. The phase adjustment fixture for Hall plate pressing as described in claim 5, characterized in that, The pressing component includes a pressing rod (14), which is rotatably disposed in the fixture connecting block (13) via a bearing, and the contour pressing head (16) is connected to the end of the pressing rod (14).

7. The phase adjustment fixture for Hall plate pressing as described in claim 6, characterized in that, The bearing is a ball bearing (15).

8. The phase adjustment fixture for Hall plate pressing as described in claim 3, characterized in that, Both the first link (9) and the second link (11) are slotted rods.

9. The phase adjustment fixture for Hall plate pressing as described in claim 1, characterized in that, The bottom of the contouring indenter (16) is provided with at least two positioning pins.

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