A double-head fan

Abstract

The utility model relates to a double -end fan. Including base, support subassembly and fan subassembly, support subassembly includes support rod, be equipped with circuit board in the base, the base upper end face is equipped with the rotary groove for the support rod embedding, fan subassembly includes first fan and second fan, first fan and second fan can all rotatable connection in support rod, first fan and second fan all pass through support rod and rotary groove with circuit board electricity connection after the wire. The utility model discloses through the setting of step by step, makes the fan can freely rotate in x, y, z axis three -dimensional, and can play the more stable function while being convenient for rotating.

Description

Technical Field

[0001] This utility model belongs to the field of fan technology, specifically relating to a dual-head fan. Background Technology

[0002] Fans are becoming increasingly popular, but single-head fans can only be used by one person, or can only blow air in one direction. In actual use, blowing air in one direction will leave other parts of the body still hot. After adjusting the fan angle, the original blowing area will no longer receive airflow, making daily use inconvenient. Although there are now dual-head fans with directional tubes that can be adjusted to a universal direction, the fan will vibrate during operation. As the vibration continues, the blowing direction will inevitably change, causing the inconvenience of constant adjustment during use. Summary of the Invention

[0003] To solve the above-mentioned technical problems, this utility model provides a dual-head fan. Through a step-by-step design, the fan can rotate freely in the x, y, and z axes, which facilitates rotation while providing greater stability.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A dual-head fan includes a base, a support assembly, and a fan assembly. The support assembly includes a support rod. A circuit board is disposed inside the base. A rotating groove for the support rod to be embedded is provided on the upper surface of the base. The fan assembly includes a first fan and a second fan. Both the first fan and the second fan are rotatably connected to the support rod. Both the first fan and the second fan are electrically connected to the circuit board after passing through the support rod and the rotating groove with wires.

[0006] It also includes a limiting component, which is a disc-shaped structure with an arc-shaped limiting elongated hole. The upper end face of the limiting component passes through a rotating groove and is detachably connected to a support rod. The lower end face of the rotating groove is provided with a limiting post that fits into the limiting elongated hole. The support rod rotates around the z-axis within the rotating groove. The limiting component has a through hole that communicates sequentially with a through hole on the rotating groove and the inner cavity of the support rod. Both the first fan and the second fan are electrically connected to the circuit board via wires that pass sequentially through the inner cavity of the support rod, the through hole, and the through hole.

[0007] The support assembly also includes a rotating seat, which is rotatably connected to the upper end of the support rod. The first fan and the second fan are respectively rotatably connected to the left and right ends of the rotating seat. The first fan and the second fan rotate around the y-axis on the rotating seat. A limiting groove is provided on the inner side wall of the perforation edge at the upper end of the support rod. The rotating seat is provided with an extension that fits through the perforation. The extension is provided with a limiting part that fits with the limiting groove. The rotating seat rotates around the x-axis on the support rod.

[0008] This dual-head fan employs a structure where a support rod engages with a rotating slot, and a locking mechanism at the bottom secures the support rod. An arc-shaped elongated hole on the locking mechanism allows a locking post at the bottom of the rotating slot to fit within it. This restricts the support rod's rotation around the z-axis within the rotating slot to a limited angle. Since the rotation of the support rod directly drives the simultaneous rotation of the first and second fans mounted on it, and these fans are relatively heavy, the rotatable angle of the locking hole is set to 90° to prevent excessive rotation and maintain stability above the center of gravity of the base. Therefore, the rotation angle of the front opening of the support rod is limited to 90°, preventing instability due to excessive rotation.

[0009] To enable the first and second fans to rotate on the x-axis, a rotating seat is provided. The rotating seat is inserted into the through hole on the support rod, so that the limiting part on the extension of the rotating seat fits into the limiting groove. Since the rotation of the first and second fans on the x-axis is actually rotating them from a horizontal state to a vertical state, it can meet their all-round rotation requirements. It does not need to rotate 180°, only a 90° rotation angle is required. Therefore, the rotatable angle of the limiting groove can also be set to 90°, thereby meeting the rotation requirements of the first and second fans on the x-axis.

[0010] In order to enable the first and second fans to rotate on the y-axis, the first and second fans are rotatably connected to the left and right ends of the rotating base, so that the first and second fans can rotate around the y-axis on the rotating base. This enables the first and second fans to rotate in three directions on the x, y, and z axes. At the same time, the assembly method of the limiting component can more effectively achieve stability and flexibility.

[0011] Furthermore, the support assembly also includes a rotating column, one end of which is rotatably connected to a rotating seat and rotates about the y-axis on the rotating seat; the other end of which is rotatably connected to a first fan / second fan and rotates about the z-axis on the rotating column.

[0012] Compared with the prior art, the advantages of this utility model are as follows: the limiting hole with a rotatable angle provided on the limiting member allows it to cooperate with the limiting post, thereby limiting the rotatable angle of the support rod and enabling the first and second fans to rotate on the z-axis. At the same time, the stability of the rotating groove can provide sufficient stability for the support rod. The limiting part on the rotating seat can realize the rotation of the first and second fans on the x-axis when it cooperates with the limiting groove. The cooperation of the first and second fans on the rotating seat can realize the rotation on the y-axis, thereby realizing the rotation of the first and second fans in three directions on the x, y, and z axes. Attached Figure Description

[0013] 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.

[0014] Figure 1 This is a perspective view of the present utility model;

[0015] Figure 2 This is a bottom-view explosion diagram of the present invention;

[0016] Figure 3 For the present utility model Figure 2 A magnified view of part A;

[0017] Figure 4 This is a rear-view explosion diagram of the present invention;

[0018] Figure 5 For the present utility model Figure 4 A magnified view of section B;

[0019] Figure 6 For the present utility model Figure 4 A magnified view of a portion at point C;

[0020] Figure 7 This is a rear view of the concealed support rod and base of this utility model.

[0021] The components include: 1. Base; 11. Circuit board; 12. Rotating groove; 13. Limiting post; 14. Through hole; 2. Support assembly; 21. Support rod; 211. Through hole; 212. Limiting groove; 22. Rotating seat; 221. Extension; 222. Limiting part; 23. Rotating post; 3. Fan assembly; 31. First fan; 32. Second fan; 4. Limiting component; 41. Limiting elongated hole; 42. Through hole. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0023] The specific embodiments of this utility model will now be described with reference to the accompanying drawings:

[0024] like Figures 1-7 As shown, a dual-head fan includes a base 1, a support assembly 2, and a fan assembly 3. The support assembly 2 includes a support rod 21. The base 1 has a circuit board 11 inside. The upper surface of the base 1 has a rotating groove 12 for the support rod 21 to be inserted. The fan assembly 3 includes a first fan 31 and a second fan 32. Both the first fan 31 and the second fan 32 are rotatably connected to the support rod 21. Both the first fan 31 and the second fan 32 are electrically connected to the circuit board 11 after passing through the support rod 21 and the rotating groove 12 with wires.

[0025] It also includes a limiting component 4, which is a disc-shaped structure. The limiting component 4 has an arc-shaped limiting elongated hole 41. The upper end face of the limiting component 4 passes through the rotating groove 12 and is detachably connected to the support rod 21. The lower end face of the rotating groove 12 has a limiting post 13 that fits into the limiting elongated hole 41. The support rod 21 rotates around the z-axis in the rotating groove 12. The limiting component 4 has a through hole 42, which communicates sequentially with the through hole 14 on the rotating groove 12 and the inner cavity of the support rod 21. The first fan 31 and the second fan 32 are both electrically connected to the circuit board 11 after passing through the inner cavity of the support rod 21, the through hole 14, and the through hole 42 in sequence with wires.

[0026] The support assembly 2 further includes a rotating seat 22, which is rotatably connected to the upper end of the support rod 21. The first fan 31 and the second fan 32 are respectively rotatably connected to the left and right ends of the rotating seat 22. The first fan 31 and the second fan 32 rotate around the y-axis on the rotating seat 22. A limiting groove 212 is provided on the inner side wall of the through hole 211 at the upper end of the support rod 21. The rotating seat 22 is provided with an extension 221 that fits through the through hole 211. The extension 221 is provided with a limiting part 222 that fits with the limiting groove 212. The rotating seat 22 rotates around the x-axis on the support rod 21.

[0027] Furthermore, the support assembly 2 also includes a rotating column 23, one end of which is rotatably connected to the rotating seat 22, and the rotating column 23 rotates around the y-axis on the rotating seat 22; the other end of the rotating column 23 is rotatably connected to the first fan 31 / second fan 32, and the first fan 31 / second fan 32 rotates around the z-axis on the rotating column 23.

[0028] Description of the working principle of this utility model:

[0029] The dual-head fan with this structure uses a support rod 21 that engages with the rotating groove 12 and is locked at its bottom by a limiting member 4. This fixes the bottom of the support rod 21. An arc-shaped limiting hole 41 is provided on the limiting member 4, allowing the limiting post 13 at the bottom of the rotating groove 12 to engage within the limiting hole 41. Therefore, the support rod 21 can rotate within a certain angle while rotating around the z-axis within the rotating groove 12. Since the rotation of the support rod 21 directly drives the first fan 31 and the second fan 32 on it to rotate simultaneously, and the first fan 31 and the second fan 32 are relatively heavy, to better ensure stability without excessive rotation of the first fan 31 and the second fan 32, keeping them within the center of gravity of the base 1, the rotatable angle of the limiting hole 41 is set to 90°. Therefore, the rotation angle of the front opening of the support rod 21 can be limited to 90°, preventing excessive rotation and instability at the center of gravity.

[0030] In order to enable the first fan 31 and the second fan 32 to rotate on the x-axis, a rotating seat 22 is provided. The rotating seat 22 is inserted into the through hole 211 on the support rod 21, so that the limiting part 222 on the extension 221 of the rotating seat 22 fits in the limiting groove 212. Since the first fan 31 and the second fan 32 rotate on the x-axis, they are actually rotated from a horizontal state to a vertical state, which can meet their all-round rotation requirements. It is not necessary to rotate 180°, only a 90° rotation angle is required. Therefore, the rotatable angle of the limiting groove 212 can also be set to 90°, thereby meeting the rotation requirements of the first fan 31 and the second fan 32 on the x-axis.

[0031] In order to enable the first fan 31 and the second fan 32 to rotate on the y-axis, the first fan 31 and the second fan 32 are rotatably connected to the left and right ends of the rotating base 22, so that the first fan 31 and the second fan 32 can rotate around the y-axis on the rotating base 22. This enables the first fan 31 and the second fan 32 to rotate in three directions on the x, y and z axes. At the same time, the assembly method of the limiting member 4 can more effectively achieve stability and flexibility.

[0032] To better enable the first fan 31 and the second fan 32 to rotate on the y-axis, a rotating column 23 is provided. One end of the rotating column 23 is fitted into the rotating base 22, allowing the rotating column 23 to rotate along the y-axis on the rotating base 22. The other end of the rotating column 23 is rotatably connected to the first fan 31 / second fan 32, allowing the first fan 31 / second fan 32 to rotate around the z-axis on the rotating column 23. This results in an additional dimension of rotation effect for the dual-headed fan, in addition to its three-dimensional rotation on the x, y, and z axes, leading to a better overall steering effect.

[0033] The beneficial effects of this utility model are as follows: the rotatable limiting elongated hole 41 provided on the limiting member 4 allows it to cooperate with the limiting post 13, thereby limiting the rotatable angle of the support rod 21 and enabling the first fan 31 and the second fan 32 to rotate on the z-axis. At the same time, the stability of the rotating groove 12 can provide sufficient stability for the support rod 21. The limiting part 222 on the rotating seat 22 can realize the rotation of the first fan 31 and the second fan 32 on the x-axis during the process of cooperating with the limiting groove 212. The cooperation of the first fan 31 and the second fan 32 on the rotating seat 22 can realize the rotation on the y-axis. Thus, the first fan 31 and the second fan 32 can rotate in three directions on the x, y, and z axes. The setting of the rotating post 23 enables the dual-head fan to have an additional dimension of rotation effect on the basis of the three-way rotation on the x, y, and z axes, resulting in a better turning effect.

[0034] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A dual-head fan, characterized in that: The device includes a base, a support assembly, and a fan assembly. The support assembly includes a support rod. The base contains a circuit board and has a rotating groove on its upper surface for the support rod to be inserted. The fan assembly includes a first fan and a second fan. Both the first fan and the second fan are rotatably connected to the support rod. Both the first fan and the second fan are electrically connected to the circuit board via wires passing through the support rod and the rotating groove.

2. The dual-head fan according to claim 1, characterized in that: It also includes a limiting component, which is a disc-shaped structure. The limiting component has an arc-shaped limiting elongated hole. The upper end face of the limiting component passes through the rotating groove and is detachably connected to the support rod. The lower end face of the rotating groove is provided with a limiting post that fits into the limiting elongated hole. The support rod rotates around the z-axis in the rotating groove.

3. The dual-head fan according to claim 2, characterized in that: The limiting member is provided with a through hole, which is connected in sequence to the through hole on the rotating groove and the inner cavity of the support rod. The first fan and the second fan are electrically connected to the circuit board after passing through the inner cavity of the support rod, the through hole and the through hole in sequence with wires.

4. The dual-head fan according to claim 1, characterized in that: The support assembly also includes a rotating base, which is rotatably connected to the upper end of the support rod. The first fan and the second fan are respectively rotatably connected to the left and right ends of the rotating base, and the first fan and the second fan rotate around the y-axis on the rotating base.

5. The dual-head fan according to claim 4, characterized in that: The upper end of the support rod has a limiting groove on the inner side wall of the perforation edge. The rotating seat has an extension that fits through the perforation. The extension has a limiting part that fits with the limiting groove. The rotating seat rotates around the x-axis on the support rod.

6. The dual-head fan according to claim 5, characterized in that: The support assembly also includes a rotating column, one end of which is rotatably connected to a rotating seat and rotates about the y-axis on the rotating seat; the other end of which is rotatably connected to a first fan / second fan and rotates about the z-axis on the rotating column.

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