Motor for fan

Abstract

The utility model discloses a fan motor, which comprises a casing, a fixing support is distributed on the casing in a surrounding manner, the fixing support comprises a support rod and a sleeve rod, the sleeve rod is provided with a sleeve groove corresponding to the support rod, the support rod slides in the sleeve groove, an elastic piece is arranged on the support rod, and limiting through holes communicated with the sleeve groove are uniformly distributed on the sleeve rod. And the limiting through hole corresponds to the elastic piece. The fan volute fixing support is novel in structure, the length of the fixing support can be flexibly adjusted, and the fan volute fixing support can be suitable for fan volutes of different sizes and is high in installation adaptability.

Description

Technical Field

[0001] The utility model belongs to the technical field of motors, and in particular relates to a motor for a fan. Background Art

[0002] In the fan of the range hood, the motor drives the wind wheel to rotate to form negative pressure, thereby achieving the suction and exhaust of oil fumes.

[0003] The motor is fixed to the fan volute through a motor bracket. The unfolded size of the motor bracket is fixed and cannot be applied to fan volutes of different sizes. The installation adaptability is poor. For manufacturers, molds of different sizes need to be used, which results in high production costs.

[0004] The existing patent document (publication number: CN220857797U) discloses "a range hood motor", which also has the above-mentioned technical problems. Summary of the invention

[0005] The utility model aims to solve the above-mentioned technical problems existing in the prior art and provides a motor for a fan with a novel structure and a flexibly adjustable length of a fixed bracket, which can be applied to fan volutes of different sizes and has strong installation adaptability.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] A motor for a fan comprises: a casing, characterized in that: a fixed bracket is distributed around the casing, the fixed bracket comprises a support rod and a sleeve rod, the sleeve rod is provided with a sleeve groove corresponding to the support rod, the support rod slides in the sleeve groove, an elastic member is provided on the support rod, and limiting through holes communicating with the sleeve groove are evenly distributed on the sleeve rod, the limiting through holes correspond to the elastic member. The motor has a novel structure, the length of the fixed bracket can be flexibly adjusted, and it can be applied to fan volutes of different sizes, and has strong installation adaptability.

[0008] Furthermore, a polygonal protrusion is provided on the support rod, a threaded column is provided on the polygonal protrusion, an ear seat is provided on the housing, a polygonal through hole corresponding to the polygonal protrusion is provided on the ear seat, and a locking cap is connected to the threaded column, and the locking cap prevents the polygonal protrusion from freely escaping from the polygonal through hole. The polygonal protrusion is aligned with the polygonal through hole and embedded, so that the fixed bracket can be quickly positioned on the housing, reducing the difficulty of positioning; there will be no relative rotation and sliding between the support rod and the housing, and the fixing is reliable, which improves the installation stability of the fixed bracket.

[0009] Furthermore, the elastic member includes a spring and a stud. The stud is provided at one end of the spring, and a fixing groove is provided on the support rod. The other end of the spring is fixed in the fixing groove. When adjusting the length of the fixing bracket, first squeeze the stud so that it retracts into the fixing groove on the support rod, and the spring is compressed. At this time, the sleeve rod can be slid. When the next limit through hole meets the stud, the spring generates a rebound force acting on the stud, causing the stud to penetrate through the limit through hole and preventing the sleeve rod from freely sliding relative to the support rod, which is simple to adjust.

[0010] Furthermore, the casing includes a first housing and a second housing. A head bolt is connected between the first housing and the second housing, and a nut is connected to the head bolt. The nut cooperates with the head bolt to clamp and fix the first housing and the second housing. The first housing and the second housing can be detachably separated, which is convenient for overhauling the internal motor components and replaces the integrally formed casing structure, being flexible and convenient.

[0011] Furthermore, the first housing is provided with a first edge, and the first edge is provided with a first lug. The second housing is provided with a second edge, and the second edge is provided with a second lug. Installation through holes for the head bolt to pass through are provided on both the first lug and the second lug. The first edge and the second edge are closely attached, and the gap at the connection between the two is very small, making it difficult for external oil fume to enter the casing, and having good sealing performance.

[0012] Furthermore, the adjacent two limit through holes are connected. During the process of using tools such as a screwdriver or a rod to squeeze the stud, the cross-sectional diameter of the above-mentioned tool is smaller than the cross-sectional diameter of the channel between the adjacent two limit through holes. The above-mentioned tool can continuously press the stud without affecting the sliding of the sleeve rod until the stud is connected to the limit through hole at the target position, eliminating the need to gradually squeeze the stud and improving the operation efficiency.

[0013] Furthermore, one end of the sleeve rod is provided with an installation portion, and an installation counterbore is provided on the installation portion. Screws are inserted into the installation counterbore to fix the fixing bracket on the blower volute, improving the installation convenience.

[0014] The utility model has the following beneficial effects due to the adoption of the above technical solutions:

[0015] 1. The length of the fixing bracket can be flexibly adjusted, and it can be applicable to blower volutes of different sizes, with strong adaptability. When adjusting, first squeeze the stud so that it retracts into the fixing groove on the support rod, and the spring is compressed. At this time, the sleeve rod can be slid. When the next limit through hole meets the stud, the spring generates a rebound force acting on the stud, causing the stud to penetrate through the limit through hole and preventing the sleeve rod from freely sliding relative to the support rod, which is simple to adjust.

[0016] 2. Align the polygonal protrusion with the polygonal through-hole and embed it to achieve the rapid positioning of the fixing bracket on the casing, reducing the positioning difficulty. Then, install a lock nut on the threaded post. The lock nut blocks the polygonal protrusion from freely disengaging from the polygonal through-hole, preventing relative rotation and sliding between the support rod and the casing, ensuring reliable fixation and improving the installation stability of the fixing bracket. Description of the Drawings

[0017] The present utility model will be further described below in conjunction with the drawings:

[0018] Figure 1 It is a schematic structural view of an electric motor for a blower according to the present utility model;

[0019] Figure 2 It is a schematic structural view of the docking of the first casing and the second casing in the present utility model;

[0020] Figure 3 It is a schematic structural view of the fixing bracket in the present utility model;

[0021] Figure 4 It is a schematic structural view of the support rod in the present utility model;

[0022] Figure 5 It is a schematic structural view of the sleeve rod in the present utility model.

[0023] In the figure: 1 - first casing; 2 - second casing; 3 - end bolt; 4 - first edge; 5 - first lug; 6 - second edge; 7 - second lug; 8 - nut; 9 - fixing bracket; 10 - support rod; 11 - sleeve rod; 12 - sleeve groove; 13 - fixing groove; 14 - spring; 15 - stud head; 16 - limit through-hole; 17 - installation part; 18 - installation counterbore; 19 - polygonal protrusion; 20 - threaded post; 21 - ear seat; 22 - polygonal through-hole; 23 - lock nut. Detailed Embodiment

[0024] As Figures 1 to 5 shown, an electric motor for a blower according to the present utility model includes: a casing, a stator and a rotor are arranged inside the casing, the stator is rotatably connected to the rotor, and a coil is wound around the stator. The above structure belongs to the prior art and will not be elaborated here.

[0025] The casing includes a first casing 1 and a second casing 2. An end bolt 3 is connected between the first casing 1 and the second casing 2. The first casing 1 is provided with a first edge 4, and the first edge 4 is provided with a first lug 5. The second casing 2 is provided with a second edge 6, and the second edge 6 is provided with a second lug 7. Installation through-holes for the end bolt 3 to pass through are provided on both the first lug 5 and the second lug 7. A nut 8 is connected to the end bolt 3, and the nut 8 cooperates with the end bolt 3 to clamp the first lug 5 and the second lug 7.

[0026] The first housing 1 and the second housing 2 are detachably separable, which is convenient for inspecting the internal motor components, replacing the integrally formed housing structure, and is flexible and convenient; the first edge 4 is closely attached to the second edge 6, and the gap at the connection between the two is very small, making it difficult for external oil fumes to enter the housing, and the sealing performance is good.

[0027] Fixing brackets 9 are distributed around the housing. The fixing bracket 9 includes a support rod 10 and a sleeve rod 11. The sleeve rod 11 is provided with a sleeve groove 12 corresponding to the support rod 10. The support rod 10 slides in the sleeve groove 12. A fixing groove 13 is provided on the support rod 10. An elastic member is provided in the fixing groove 13. The elastic member includes a spring 14 and a stud 15. The stud 15 is provided at one end of the spring 14, and the other end of the spring 14 is fixed in the fixing groove 13. The sleeve rod 11 is evenly distributed with limit through holes 16 communicated with the sleeve groove 12, and the limit through holes 16 correspond to the stud 15.

[0028] The length of the fixing bracket 9 can be flexibly adjusted, which can be applicable to blower casings of different sizes and has strong adaptability; during adjustment, first squeeze the stud 15 to make it retract into the fixing groove 13 on the support rod 10, and the spring 14 is compressed. At this time, the sleeve rod 11 can be slid. When the next limit through hole 16 meets the stud 15, the spring 14 generates a rebound force acting on the stud 15, making the stud 15 penetrate through the limit through hole 16 to prevent the sleeve rod 11 from freely sliding relative to the support rod 10, and the adjustment is simple.

[0029] Adjacent two limit through holes 16 are communicated. During the process of using tools such as a screwdriver or a rod to squeeze the stud 15, the cross-sectional diameter of the above tool is smaller than the cross-sectional diameter of the channel between adjacent two limit through holes 16. The above tool can continuously press the stud 15 and will not affect the sliding of the sleeve rod 11 until the stud 15 is connected to the limit through hole 16 at the target position, without gradually squeezing the stud 15, improving the operation efficiency.

[0030] One end of the sleeve rod 11 is provided with a mounting portion 17, and a mounting counterbore 18 is provided on the mounting portion 17. Screws are inserted into the mounting counterbore 18 to fix the fixing bracket 9 on the blower casing, improving the convenience of installation.

[0031] The support rod 10 is provided with a polygonal protrusion 19, and a threaded post 20 is provided on the polygonal protrusion 19. The cross-sectional diameter of the threaded post 20 is smaller than the cross-sectional diameter of the polygonal protrusion 19. An ear seat 21 is provided on the second edge 6, and a polygonal through hole 22 corresponding to the polygonal protrusion 19 is provided on the ear seat 21. A lock nut 23 is connected to the threaded post 20.

[0032] Align the polygonal protrusion 19 with the polygonal through-hole 22 and embed it to achieve the rapid positioning of the fixing bracket 9 on the casing, reducing the positioning difficulty. Then, install a lock nut 23 on the threaded post 20. By blocking the polygonal protrusion 19 from freely disengaging from the polygonal through-hole 22 with the lock nut 23, relative rotation and sliding will not occur between the support rod 10 and the casing, and the fixation is reliable, improving the installation stability of the fixing bracket 9.

[0033] The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent replacements, or modifications made based on the present invention to solve substantially the same technical problems and achieve substantially the same technical effects are all covered by the protection scope of the present invention.

Claims

1. A motor for a fan, comprising: a housing, characterized in that: fixed brackets are distributed around the housing, the fixed brackets include support rods and sleeve rods, the sleeve rods are provided with sleeve grooves corresponding to the support rods, the support rods slide in the sleeve grooves, elastic members are provided on the support rods, limiting through holes communicating with the sleeve grooves are evenly distributed on the sleeve rods, and the limiting through holes correspond to the elastic members.

2. The motor for a blower according to claim 1, characterized in that: Polygonal protrusions are provided on the support rods, threaded posts are provided on the polygonal protrusions, ear seats are provided on the housing, polygonal through holes corresponding to the polygonal protrusions are provided on the ear seats, lock nuts are connected to the threaded posts, and the lock nuts prevent the polygonal protrusions from freely coming out of the polygonal through holes.

3. The motor for a fan according to claim 1, characterized in that: The elastic members include springs and column heads, the column heads are provided at one end of the springs, fixed grooves are provided on the support rods, and the other ends of the springs are fixed in the fixed grooves.

4. The motor for a fan according to claim 1, wherein: The housing includes a first housing and a second housing, end bolts are connected between the first housing and the second housing, nuts are connected to the end bolts, and the nuts cooperate with the end bolts to clamp the first housing and the second housing.

5. The motor for a fan according to claim 4, characterized in that: The first housing is provided with a first edge, the first edge is provided with a first lug, the second housing is provided with a second edge, the second edge is provided with a second lug, and mounting through holes for the end bolts to pass through are provided on both the first lug and the second lug.

6. The motor for a fan according to claim 1, characterized in that: Adjacent two of the limiting through holes are communicated.

7. A motor for a blower, characterized in that: One end of the sleeve rod is provided with a mounting portion, and a mounting counterbore is provided on the mounting portion.

Images