A tooling for ensuring the verticality of the long screw of a fan motor with a steel plate casing.

Abstract

This utility model discloses a fixture for ensuring the verticality of the long screw of a fan with a steel shell, belonging to the field of fan motor assembly technology. It includes: a lower positioning fixture, an upper positioning fixture, and at least two vertical correction components. The lower positioning fixture includes a lower fixture body with a lower positioning cavity adapted to the motor's bottom cover, and a first positioning hole for adapting to the bottom of the long screw. The upper positioning fixture includes an upper fixture body with a second positioning hole for adapting to the top of the long screw. The vertical correction components include a positioning shaft and a mating hole. The positioning shaft is perpendicular to the lower fixture body and fixedly connected to it. The mating hole is located on the upper fixture body, and the positioning shaft is inserted into the mating hole to correct the coaxial arrangement of the corresponding first and second positioning holes. This utility model can correct both ends of the long screw, ensuring the verticality of both ends.

Description

Technical Field

[0001] This utility model relates to the field of fan steel plate shell motor assembly technology, and in particular to a tooling for ensuring the verticality of the long screw of a fan steel plate shell motor. Background Technology

[0002] With the development of the motor industry, more and more motors are adopting steel plate housing structures, which have advantages such as high strength and good heat dissipation. Currently, most mainstream steel plate housing motors use a long screw connection method, which uses a long screw that runs through the top and bottom covers of the motor to achieve a tight connection of the housing components.

[0003] In fan motor applications, some models utilize a long screw on the motor for overall assembly and connection. This structural design places strict requirements on the perpendicularity of the long screw. Insufficient perpendicularity of the long screw can lead to problems such as fan misalignment and vibration during assembly, severely affecting the overall stability and service life of the machine.

[0004] In traditional assembly processes, workers typically rely on experience, visual inspection, or simple measuring tools to adjust the screw's perpendicularity. This method suffers from low precision and poor consistency, making it difficult to meet the assembly accuracy requirements of modern production. Especially in mass production, the lack of effective perpendicularity control methods leads to a decrease in product qualification rates and increased rework costs. Utility Model Content

[0005] In view of this, it is necessary to provide a tooling for ensuring the verticality of the long screw of a fan with a steel plate housing motor, in order to solve the problem that the front and rear verticality of the long screw of the existing steel plate housing motor is too low.

[0006] This utility model provides a tooling for ensuring the verticality of the long screw of a fan with a steel plate shell motor, including:

[0007] The lower positioning tire includes a lower tire body, the lower tire body having a lower positioning cavity adapted to the motor bottom cover, and the lower positioning tire having a first positioning hole adapted to the bottom of the long screw.

[0008] The upper positioning tire includes an upper tire body, on which a second positioning hole is provided for fitting with the top of the long screw.

[0009] At least two vertical alignment components, each including a positioning shaft and a docking hole, wherein the positioning shaft is perpendicular to the lower tire body and fixedly connected to it, the docking hole is opened on the upper tire body, and the positioning shaft is inserted into the docking hole to align the coaxial arrangement of the corresponding first and second positioning holes.

[0010] Furthermore, the diameter of the positioning shaft is consistent with the inner diameter of the docking hole.

[0011] Furthermore, the end of the positioning shaft away from the lower tire body is chamfered.

[0012] Furthermore, the vertical correction component also includes a lower connecting part and an upper connecting part. The lower connecting part is integrally connected to the outer side of the lower tire body and is offset from the lower tire body. The positioning shaft is fixedly connected to the lower connecting part. The upper connecting part is integrally connected to the outer side of the upper tire body and is offset from the upper tire body. The docking hole is formed on the upper connecting part.

[0013] Furthermore, at least two of the lower connecting portions are equidistant from each other around the central axis of the lower tire body.

[0014] Furthermore, the shape and size of the first positioning hole are consistent with the shape and size of the nut of the long screw; the nut is inserted into the first positioning hole.

[0015] Furthermore, the diameter of the second positioning hole is larger than the outer diameter of the nut on the long screw, and a space for inserting a wrench is formed between the inner wall of the second positioning hole and the nut.

[0016] Furthermore, the number of long screws is four, and they are arranged equidistantly around the central axis of the lower positioning tire.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] This utility model discloses a tooling for ensuring the verticality of the long screw of a fan steel plate shell motor. It is equipped with a vertical correction component, which includes a positioning shaft and a docking hole. The positioning shaft is set perpendicular to the lower body and fixedly connected to the lower body. The docking hole is opened on the upper body, and the positioning shaft is inserted into the docking hole. This ensures that the first positioning hole and the second positioning hole remain coaxial, thereby correcting the verticality of the long screw located in the first positioning hole and the second positioning hole respectively. It transforms the complex verticality correction into a mechanical positioning action and eliminates the uncertainty of manual adjustment. Attached Figure Description

[0019] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention. Figure 1 ;

[0021] Figure 2 This is a schematic diagram of the overall structure of the present invention. Figure 2 ;

[0022] Figure 3 This is a diagram showing the overall state of the present invention in conjunction with the motor.

[0023] Figure 4 This is a partial cross-sectional view of the present invention;

[0024] Figure 5 yes Figure 4 A magnified structural diagram of point A;

[0025] Figure 6 yes Figure 4 A magnified structural diagram of point B;

[0026] Figure 7 This is a schematic diagram of the internal frame structure of the motor in this utility model.

[0027] In the diagram, 100 is the lower positioning tire; 110 is the lower tire body; 111 is the lower positioning cavity; and 112 is the first positioning hole.

[0028] 200. Upper positioning tire; 210. Upper tire body; 220. Second positioning hole;

[0029] 300. Vertical alignment component; 310. Positioning shaft; 311. Chamfer; 320. Butt hole; 330. Lower connecting part; 340. Upper connecting part;

[0030] 400. Motor; 410. Long screw; 411. Nut. Detailed Implementation

[0031] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which constitute a part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0032] This embodiment provides a tooling for ensuring the verticality of the long screw 410 of a fan steel plate shell motor, which relates to the field of fan steel plate shell motor 400 assembly technology. By setting a jig body that is adapted to the end cover of the motor 400 at both ends of the motor 400, and positioning it through the positioning shaft 310 and the docking hole 320, the verticality of the two ends of the long screw 410 is ensured by making correction holes at both ends of the long screw 410.

[0033] Please see Figures 1 to 7The verticality assurance fixture for the long screw 410 of a fan steel plate shell motor in this embodiment includes: a lower positioning jig 100, an upper positioning jig 200, and at least two vertical correction components 300. The lower positioning jig 100 and the upper positioning jig 200 can respectively cooperate with the upper and lower end covers of the motor 400 and the end of the long screw. The at least two vertical correction components 300 cooperate with each other to make the lower positioning jig 100 and the upper positioning jig 200 relatively parallel and aligned, thereby correcting the two ends of the long screw 410 to maintain a consistent verticality.

[0034] The lower positioning tire 100 includes a lower tire body 110, which has a lower positioning cavity 111 adapted to the bottom cover of the motor 400. The lower positioning cavity 111 can cooperate with the lower end cover of the motor 400, so that the motor 400 is arranged perpendicular to the lower tire body 110, ensuring that the motor 400 is in a set position. The lower positioning tire 100 is provided with a first positioning hole 112 for fixing the bottom of a long bolt. The bottom of the long bolt is inserted into the first positioning hole 112 and is limited by the first positioning hole 112.

[0035] The upper positioning tire 200 includes an upper tire body 210, which can cooperate with the upper end cover of the motor 400 so that the projections of the upper tire body 210 relative to the lower tire coincide. The upper tire body 210 has a second positioning hole 220 that cooperates with the top of the long screw 410. The top of the long screw is inserted into the second positioning hole 220 and is limited by the first positioning hole 112.

[0036] The vertical correction component 300 includes a positioning shaft 310 and a docking hole 320. The positioning shaft 310 is set perpendicular to the lower tire body 110 and fixedly connected to the lower tire body 110. The docking hole 320 is opened on the upper tire body 210. The positioning shaft 310 is inserted into the docking hole 320, which can ensure that the first positioning hole 112 and the second positioning hole 220 remain coaxial, thereby correcting the verticality of the long screw 410 located in the first positioning hole 112 and the second positioning hole 220 respectively. The complex verticality correction is transformed into a mechanical positioning action, eliminating the uncertainty of manual adjustment.

[0037] During assembly, the bottom cover of the motor 400 is placed in the lower positioning cavity 111, and the bottom of the long screw 410 is inserted into the first positioning hole 112 for fixation. The upper positioning tire 200 is sleeved on the top of the long screw 410 through the second positioning hole 220. At this time, the positioning shaft 310 of the vertical correction component 300 and the mating hole 320 are not yet fully engaged. The operator adjusts the position of the upper tire body 210 so that each mating hole 320 is gradually fitted into the corresponding positioning shaft 310. During this process, the upper tire body 210 undergoes a slight displacement under the guidance of the positioning shaft 310, ultimately achieving coaxial alignment of all the second positioning holes 220 and the first positioning hole 112. After positioning is completed, the long screw 410 remains vertical under the constraint of the upper and lower positioning holes, at which point the nut 411 can be tightened.

[0038] In some embodiments, the diameter of the positioning shaft 310 is consistent with the inner diameter of the mating hole 320. The positioning shaft 310 can achieve a perfect fit with the mating hole 320, thereby effectively avoiding the problem of axis deviation of the long screw 410 caused by the gap between the positioning shaft 310 and the mating hole 320, ensuring that the first positioning hole 112 and the second positioning hole 220 are accurately aligned, and thus making the perpendicularity of the long screw 410 meet the assembly requirements of the fan motor 400.

[0039] In practical implementation, the positioning shaft 310 is a cylindrical component that is perpendicular to and fixedly connected to the lower tire body 110. It can be made of metal and machined to a size equal to the inner diameter of the mating hole 320, allowing it to be inserted into the mating hole 320 to form a clearance-free fit. The mating hole 320 is a through hole on the upper tire body 210, and can be machined using drilling or milling processes to a diameter equal to that of the positioning shaft 310. It is used to accommodate the positioning shaft 310 and limit the horizontal displacement of the upper tire body 210.

[0040] When the upper positioning tire 200 and the lower positioning tire 100 are overlapped, the positioning shaft 310 is inserted into the mating hole 320. Since the diameters of the two are the same, there is no gap between the positioning shaft 310 and the inner wall of the mating hole 320. The upper tire body 210 cannot move laterally relative to the lower tire body 110, thus ensuring that the first positioning hole 112 and the second positioning hole 220 always remain coaxial. At this time, the top and bottom of the long screw 410 are inserted into the second positioning hole 220 and the first positioning hole 112 respectively, and its axis coincides with the axis of the positioning shaft 310, thereby realizing the perpendicularity correction of the long screw 410.

[0041] It should be further noted that the end of the positioning shaft 310 furthest from the lower body 110 is provided with a chamfer 311. The chamfer 311 forms a guide bevel when the positioning shaft 310 is inserted into the mating hole 320, which can reduce the frictional resistance between the positioning shaft 310 and the edge of the mating hole 320. At the same time, the chamfer 311 can enable automatic correction between the positioning shaft 310 and the mating hole 320 even in a non-ideal alignment state, reducing the dependence of the assembly operation on the machining accuracy of the positioning shaft 310 and the hole.

[0042] During tooling assembly, when the upper positioning jig 200 needs to be aligned with the lower positioning jig 100, the chamfer 311 structure at the end of the positioning shaft 310 can guide the edge of the mating hole 320 to automatically slide into the surface of the positioning shaft 310. This bevel forms a transition area at the moment of contact between the shaft and the hole, avoiding jamming between the right-angled edge of the shaft end and the hole opening, so that the upper jig body 210 can be smoothly pressed down along the axial direction of the positioning shaft 310, ensuring that the coaxiality error between the first positioning hole 112 and the second positioning hole 220 is controlled within the allowable range.

[0043] In some embodiments, please refer to Figures 1 to 3The vertical alignment component 300 also includes a lower connecting part 330 and an upper connecting part 340. The lower connecting part 330 is integrally connected to the outer side of the lower tire body 110 and offset from the lower tire body 110. The positioning shaft 310 is fixedly connected to the lower connecting part 330. The upper connecting part 340 is integrally connected to the outer side of the upper tire body 210 and offset from the upper tire body 210. The mating hole 320 is formed on the upper connecting part 340. The precise fit between the positioning shaft 310 and the mating hole 320 in the external space of the tire body can effectively eliminate the interference of the internal structure of the tire body on vertical alignment, avoid interference between the motor 400 and the positioning shaft 310, and ensure the coaxiality of the long screw 410 in the upper and lower positioning holes. At the same time, the connecting part integrally connected to the upper tire body 210 and the lower tire body 110 enhances the rigidity of the overall structure and avoids positioning deviation caused by deformation under force during assembly.

[0044] In practical implementation, the lower connecting part 330 is an extension component that forms an integral structure with the outer side of the lower tire body 110. Specifically, it can be integrally connected by casting. Its design, offset from the lower tire body 110, avoids interference between the positioning shaft 310 and the internal structure of the lower tire body 110. The upper connecting part 340 is an extension component that forms an integral structure with the outer side of the upper tire body 210. Specifically, it can be integrally connected by casting. Its design, offset from the upper tire body 210, ensures that the mating hole 320 and the positioning shaft 310 form an independent correction channel.

[0045] In some embodiments, please refer to Figures 1 to 3 At least two lower connecting parts 330 are equidistantly arranged around the central axis of the lower tire body 110, ensuring the presence of at least two positioning shafts 310. This allows for a uniform distribution of the correction force on the upper tire body 210, preventing the upper tire body 210 from tilting due to unilateral force during installation, thereby improving the verticality accuracy of the long screw 410. The equidistantly distributed lower connecting parts 330 make the tooling structure symmetrical, simplifying assembly operations and improving efficiency during mass production.

[0046] In practical implementation, the lower connecting part 330 and the upper connecting part 340 are arranged in a one-to-one correspondence, with the same number and layout, allowing at least two positioning shafts 310 to mate with the corresponding mating holes 320. The equidistant arrangement around the central axis of the lower tire body 110 is equivalent to at least two lower connecting parts 330 being evenly distributed around the lower tire body 110. This can be achieved using angular intervals, for example, three lower connecting parts 330 forming a 120-degree angle, to ensure a uniform distribution of the vertical correction force between the upper positioning tire 200 and the lower positioning tire 100.

[0047] When the upper positioning tire 200 mates with the positioning shaft 310 through the mating hole 320, the constraint force applied by the multiple positioning shafts 310 to the upper tire body 210 is uniform in direction, preventing misalignment between the upper tire body 210 and the lower tire body 110 due to uneven force. At the same time, the equidistantly distributed lower connecting parts 330 simplify the positioning steps during tooling assembly, allowing operators to quickly align the upper positioning tire 200 and the lower positioning tire 100 without adjusting the angle.

[0048] In some embodiments, please refer to Figure 4 and Figure 5 The shape and size of the first positioning hole 112 are consistent with the shape and size of the nut 411 of the long screw 410. The nut 411 is inserted into the first positioning hole 112. The first positioning hole 112 can position and limit the nut 411 located at the bottom of the long screw 410 in the circumferential and axial directions.

[0049] In the specific implementation process, the first positioning hole 112 is a hole structure opened on the lower positioning jig 100. Its shape and size are completely matched with the outer contour of the nut 411. Specifically, it can be implemented by using a polygonal hole structure corresponding to the hexagon or quadrilateral shape of the nut 411, and the circumferential rotation of the nut 411 is restricted by shape constraint. The nut 411 is the fastening component at the bottom of the long screw 410. Specifically, it can be implemented by using a standard hexagonal nut 411 or a flange nut 411. Its outer contour forms a surface contact with the inner wall of the first positioning hole 112 to ensure that the long screw 410 does not deflect during assembly.

[0050] During assembly, the nut 411 at the bottom of the long screw 410 is embedded in the first positioning hole 112. Since the shape of the first positioning hole 112 perfectly matches the nut 411, all sides of the nut 411 fit tightly against the hole wall, preventing the nut 411 from rotating or shifting within the hole. Through this structure, the bottom of the long screw 410 is forcibly fixed in a predetermined position, with its axial direction aligned with the vertical reference of the lower positioning jig 100. Simultaneously, the insertion and engagement of the nut 411 with the first positioning hole 112 eliminates errors caused by manual adjustment in traditional assembly, ensuring the initial positioning accuracy of the long screw 410 in the vertical direction.

[0051] In some embodiments, please refer to Figure 4 and Figure 6 The diameter of the second positioning hole 220 is larger than the outer diameter of the nut 411 on the long screw 410. The inner wall of the second positioning hole 220 and the nut 411 form a space for inserting a wrench. The wrench can be inserted into the space to form a precise positioning and limit on the top of the long screw 410, so that the upper and lower ends of the long screw 410 have the same verticality.

[0052] In practical implementation, the second positioning hole 220 refers to the positioning hole opened in the upper body 210. Its diameter is configured to be larger than the outer diameter of the nut 411. Specifically, it can be achieved by using a circular hole that is a certain value larger than the outer diameter of the nut 411. For example, when the outer diameter of the nut 411 is 10 mm, the diameter of the second positioning hole 220 can be 15 mm. This arrangement allows for a gap between the nut 411 and the second positioning hole 220, thereby providing a accommodating area for wrench operation.

[0053] The space formed by the annular gap between the inner wall of the second positioning hole 220 and the outer wall of the nut 411 can be achieved by adjusting the dimensional difference between the second positioning hole 220 and the nut 411. This space allows a standard wrench to be inserted and clamped into the nut 411, preventing the tool from being unable to operate due to interference from the hole wall. The wrench is specifically a round hole with an inner hexagonal cavity that fits the second positioning hole 220, allowing it to mate with the nut 411.

[0054] After the long screw 410 passes through the first positioning hole 112 of the lower positioning fixture 100, the nut 411 at its top is placed in the second positioning hole 220 of the upper positioning fixture 200. Since the diameter of the second positioning hole 220 is larger than the outer diameter of the nut 411, the nut 411 can rotate freely in the hole, and the gap between its outer wall and the inner wall of the hole forms an annular operating space. During the tightening process, a wrench can be inserted into this space and clamp the nut 411, which can not only position and limit the nut 411, but also enable the tightening operation of the long screw 410 in a vertical state, avoiding the displacement of the long screw 410 due to the collision between the tool and the hole wall.

[0055] In some embodiments, please refer to Figure 7 There are four long screws 410, which are equidistantly arranged around the central axis of the lower positioning jig 100. The four equidistant long screws 410 form a stable spatial frame structure under the constraint of the vertical correction component 300. This ensures the vertical accuracy of each long screw 410 and achieves the flatness control of the overall assembly surface. This makes the force on each connection point uniform when the fan motor 400 is installed, and avoids assembly interference caused by the tilt of the long screws 410.

[0056] In the specific implementation process, the long screw 410 adopts four symmetrically distributed connecting parts, which can be achieved by using standard M8 bolts or fasteners of the same specification, forming a rectangular support structure through the four long screws 410. The equidistant arrangement around the central axis means that the four long screws 410 are evenly distributed at 90-degree intervals in the circumferential direction. This can be achieved by opening four positioning holes in a cross-shaped symmetrical distribution on the surface of the lower positioning jig 100, ensuring that the center of each long screw 410 is located on the same circumferential trajectory.

[0057] When the bottom cover of the motor 400 is embedded in the lower positioning cavity 111, the four long screws 410 pass through the corresponding first positioning holes 112, with their tops extending into the second positioning holes 220 of the upper tire body 210. Because the four long screws 410 maintain an equal angular interval in the circumferential direction, the connecting force between the top and bottom covers of the motor 400 is evenly distributed, avoiding deformation of the housing caused by unilateral force. Under the constraint of the vertical correction component 300, the axis of each long screw 410 remains parallel to the positioning shaft 310, thereby ensuring the consistency of the verticality of the four long screws 410.

[0058] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the present utility model.

Claims

1. A fixture for ensuring the perpendicularity of the long screw of a fan with a steel plate housing motor, characterized in that, include: The lower positioning tire includes a lower tire body, the lower tire body having a lower positioning cavity adapted to the motor bottom cover, and the lower positioning tire having a first positioning hole adapted to the bottom of the long screw. The upper positioning tire includes an upper tire body, on which a second positioning hole is provided for fitting with the top of the long screw. At least two vertical alignment components, each including a positioning shaft and a docking hole, wherein the positioning shaft is perpendicular to the lower tire body and fixedly connected to it, the docking hole is opened on the upper tire body, and the positioning shaft is inserted into the docking hole to align the coaxial arrangement of the corresponding first and second positioning holes.

2. The fixture for ensuring the perpendicularity of the long screw of a fan steel plate shell motor according to claim 1, characterized in that, The diameter of the positioning shaft is the same as the inner diameter of the docking hole.

3. The fixture for ensuring the perpendicularity of the long screw of a fan steel plate shell motor according to claim 2, characterized in that, The end of the positioning shaft away from the lower tire body has a chamfer.

4. The fixture for ensuring the perpendicularity of the long screw of a fan steel plate shell motor according to claim 1, characterized in that, The vertical correction component further includes a lower connecting part and an upper connecting part. The lower connecting part is integrally connected to the outer side of the lower tire body and is offset from the lower tire body. The positioning shaft is fixedly connected to the lower connecting part. The upper connecting part is integrally connected to the outer side of the upper tire body and is offset from the upper tire body. The docking hole is opened on the upper connecting part.

5. The long screw verticality guaranteeing tool of a fan steel plate shell motor according to claim 4, characterized in that, At least two of the lower connecting portions are equidistant from each other around the central axis of the lower tire body.

6. The long screw verticality guaranteeing tool of a fan steel plate shell motor according to claim 1, characterized in that, The shape and size of the first positioning hole are consistent with the shape and size of the nut of the long screw; the nut is inserted into the first positioning hole.

7. The long screw verticality guaranteeing tool of a fan steel plate shell motor according to claim 1, characterized in that, The diameter of the second positioning hole is larger than the outer diameter of the nut on the long screw, and the inner wall of the second positioning hole and the nut form a space for inserting a wrench.

8. The fixture for ensuring the perpendicularity of the long screw of a fan steel plate shell motor according to claim 1, characterized in that, The number of long screws is four, and they are arranged equidistantly around the central axis of the lower positioning tire.

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