Cooling fan motor positioning and fixing structure

Abstract

The utility model relates to a cooling fan motor positioning and fixing structure, and aims to solve the technical problems that a motor fixing structure of a conventional similar product is unreasonable in design and inconvenient to assemble and produce, and the temperature is too high and the motor is stuck due to overflow of glue. The cooling fan is characterized in that small barbs are arranged at three positions of the outer diameter of a middle pipe of the cooling fan, the small barbs and the positioning columns are distributed at equal intervals in pairs, and dispensing grooves are formed in four positions of the outer diameter of the middle pipe between the small barbs and the positioning columns respectively; when the positioning column of the middle pipe is aligned with the semicircular notch of the motor for sleeving, the small barb of the middle pipe is buckled and fixed to the top orifice of the inner diameter of the center hole of the motor, and the dispensing groove of the outer diameter of the middle pipe is fixed to the inner wall of the center hole of the motor through dispensing; a pipe sleeve column is arranged at the central axis of the fan frame in a protruding mode, deformation grooves which are arranged at equal intervals and provided with openings in the top openings are formed in the pipe sleeve column, the middle pipe extends out of the bottom of the pipe sleeve column of the fan frame and is connected into a whole, and the motor is arranged in the middle pipe in a sleeved mode and limited to a step at the opening of the pipe sleeve column.

Description

Technical Field

[0001] This utility model relates to a cooling fan, specifically a cooling fan motor positioning and fixing structure. Background Technology

[0002] Cooling fans generally refer to fans used for cooling motherboard devices such as CPUs and graphics cards. Their main purpose is to conduct heat away and blow it into the surrounding air to achieve a cooling effect. Currently, most cooling fans use adhesive to fix the motor to the central tube of the fan frame, but this fixing method has some problems. For example, when the motor is fitted into the central tube of the fan frame with adhesive, the adhesive can easily overflow onto the motor, and the adhesive overflow structure design of the motor housing is poor. At the same time, the overflowing adhesive can easily coat the electronic components, causing the components to overheat and burn out; adhesive flowing into the junction of the bearing inner ring and the fan blade shaft can solidify and cause the fan to seize up and stop rotating, among other problems. Moreover, if there is not enough adhesive, the motor can easily fly out of the central tube. To address these issues, some cooling fans use a snap-fit ​​structure design between the motor and the central tube, such as Chinese patent application number 202022261238.3, authorized on August 6, 2021, entitled "New Plastic Fan Frame Structure for Cooling Fans". However, the aforementioned products and similar products rarely combine the dispensing method and the snap-fit ​​method for fixing the motor, and the tube structure needs further improvement. Summary of the Invention

[0003] To overcome the above-mentioned shortcomings, the purpose of this utility model is to provide a positioning and fixing structure for a cooling fan motor, thereby solving the technical problems of unreasonable motor fixing structure design, inconvenient assembly and production, and glue overflow leading to excessive temperature and jamming in existing similar products. This objective is achieved through the following technical solution.

[0004] A cooling fan motor positioning and fixing structure includes a fan frame and a motor. A semi-circular slot is provided on one side of the motor's central hole. A central tube is located at the central shaft of the fan frame, and a positioning post is located at one point on the outer diameter of the central tube. The positioning post of the central tube aligns with and fits into the semi-circular slot of the motor. The key design feature is that three small barbs, equidistant from each other along with the positioning post, are located on the outer diameter of the central tube. Four adhesive grooves are located on the outer diameter of the central tube between the small barbs and the positioning post. When the positioning post of the central tube aligns with the semi-circular slot of the motor, the small barbs of the central tube engage and fix it to the top opening of the central hole of the motor. The adhesive grooves on the outer diameter of the central tube are fixed to the inner wall of the central hole of the motor by adhesive application. The positioning post of the central tube is used for precise positioning of the motor, the small barbs are mainly used for secure fixing of the motor to prevent it from flying out, and the adhesive grooves are mainly used to prevent adhesive overflow and strengthen the connection between the motor and the fan frame.

[0005] The fan frame has a raised tube sleeve at its central axis. The tube sleeve has equidistant deformation grooves with openings at the top. The middle tube extends from the bottom of the tube sleeve of the fan frame and is connected as a whole. The motor is fitted into the middle tube and confined at the step at the opening of the tube sleeve. The deformation grooves facilitate the integral molding of the fan frame and the middle tube, and guide the escape of glue during dispensing.

[0006] The positioning post of the central tube is cylindrical or conical. The shape of the positioning post is cylindrical, conical, or other suitable, used for precise positioning of the semi-circular slot of the motor with the positioning post of the central tube.

[0007] The small barbs in the central tube are either barb-shaped or protruding. The shape of the small barbs, such as barb or protruding, or other suitable shapes, is used to firmly fix the motor inside the central tube and prevent the motor from flying out during operation.

[0008] The dispensing grooves of the central tube are respectively annular grooves and strip grooves. The shape of the dispensing grooves, such as annular grooves, strip grooves, or other suitable shapes, is used to prevent glue from overflowing when the motor is dispensed into the central tube. At the same time, the glue in the dispensing grooves strengthens the bonding force between the motor and the fan frame.

[0009] This utility model has a simple and reasonable structural design, is easy to assemble and produce, has good firmness and stability, and a long service life. It effectively solves the problems of insecure motor fixing, glue overflow leading to excessive temperature and jamming in the prior art. It is suitable for the assembly and production of motor components in the fan frame of cooling fans, and for further improvement of similar products. Attached Figure Description

[0010] Figure 1 This is a top view of the structure of the fan frame of this utility model after it is installed with the motor.

[0011] Figure 2 yes Figure 1 A schematic diagram of the three-dimensional structure of the fan frame, with part A defined in the diagram.

[0012] Figure 3 yes Figure 2 Enlarged view of part A.

[0013] Figure 4 yes Figure 1 Enlarged view of the motor.

[0014] The attached figures are numbered and named as follows: 1. Sector frame, 101. Tube sleeve post, 102. Deformation groove, 2. Motor, 201. Semi-circular groove, 3. Middle tube, 4. Positioning post, 5. Small barb, 6. Glue dispensing groove. Implementation

[0015] The structure and use of this utility model will now be further described with reference to the accompanying drawings. Figures 1-4As shown, the structure includes a fan frame 1 and a motor 2. A semi-circular slot 201 is provided on one side of the central hole of the motor. A central tube 3 is located at the central axis of the fan frame. A positioning post 4 is located at one point on the outer diameter of the central tube, and the positioning post of the central tube aligns with the semi-circular slot of the motor. Small barbs 5 are provided at three points on the outer diameter of the central tube, equidistantly distributed in pairs with the positioning posts. Adhesive grooves 6 are provided at four points on the outer diameter of the central tube between the small barbs and the positioning posts. When the positioning posts of the central tube align with the semi-circular slot of the motor, the small barbs of the central tube are fastened and fixed to the top opening of the central hole of the motor. The adhesive grooves on the outer diameter of the central tube are fixed to the inner wall of the central hole of the motor by adhesive application. A tube sleeve post 101 protrudes at the central axis of the fan frame. The tube sleeve post has equidistantly arranged deformation grooves 102 with an opening at the top. The central tube extends from the bottom of the tube sleeve post of the fan frame and is connected as a whole. The motor is fitted into the central tube and confined to the step at the opening of the tube sleeve post.

[0016] The aforementioned positioning post is a rectangular structure, 0.6 mm long, 0.3 mm wide, and 3.6 mm high, used for precise positioning of the semi-circular slot of the motor; the small barb is a barb-shaped structure with a barb height of 0.6 mm, used to firmly fix the motor inside the central tube and prevent the motor from flying out during operation; the glue dispensing groove is an annular groove structure, 0.2 mm wide and 8.0 mm deep, used to prevent glue from overflowing when the motor is glued into the central tube, and at the same time, the glue in the glue dispensing groove strengthens the bonding force between the motor and the fan frame.

[0017] During assembly, first inject an appropriate amount of glue into the outside of the middle tube. Then, align the semi-circular slot of the motor with the positioning post on the middle tube for positioning. Next, insert the motor into the middle tube, and fix the motor in place by inserting the fixing part into the small barb. Finally, fill the glue groove with glue and cure it, which not only prevents glue from overflowing but also strengthens the bonding force between the motor and the fan frame.

Claims

1. A positioning and fixing structure for a cooling fan motor, the structure comprising a fan frame (1) and a motor (2), wherein a semi-circular slot (201) is provided on one side of the central hole of the motor, a central tube (3) is provided at the central shaft of the fan frame, and a positioning post (4) is provided at one point on the outer diameter of the central tube, the positioning post of the central tube being aligned with the semi-circular slot of the motor; characterized in that The outer diameter of the middle tube (3) is provided with three small barbs (5) that are equidistantly distributed in pairs together with the positioning post (4). The small barbs and the positioning post are provided with four glue grooves (6) on the outer diameter of the middle tube. When the positioning post of the middle tube is aligned with the semi-circular groove (201) of the motor (2), the small barbs of the middle tube are fastened and fixed to the top opening of the inner diameter of the central hole of the motor. The glue grooves on the outer diameter of the middle tube are fixed to the inner wall of the central hole of the motor by glue.

2. The cooling fan motor positioning and fixing structure according to claim 1, characterized in that... The sleeve column (101) protrudes from the central axis of the fan frame (1). The sleeve column is provided with deformation grooves (102) that are equidistantly arranged and open at the top opening. The middle tube (3) extends from the bottom of the sleeve column of the fan frame and is connected as a whole. The motor (2) is fitted into the middle tube and is limited to the step at the opening of the sleeve column.

3. The cooling fan motor positioning and fixing structure according to claim 1, characterized in that... The positioning post (4) of the central tube (3) is cylindrical or conical.

4. The cooling fan motor positioning and fixing structure according to claim 1, characterized in that... The small barbs (5) of the central tube (3) are respectively barb-shaped and protruding.

5. The cooling fan motor positioning and fixing structure according to claim 1, characterized in that... The dispensing grooves (6) of the central tube (3) are respectively annular grooves and strip grooves.

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