Suspension device of ceiling fan

Abstract

The utility model relates to a suspension device of a ceiling fan. Comprising a ceiling frame, a ball head and a suspension rod, the ball head is installed at one end of the suspension rod, and a ball head seat used for supporting the ball head is arranged on the ceiling frame; a plurality of groups of key groove structures which are circumferentially distributed at intervals around the axis of the suspension rod are arranged between the ball head and the ball head seat; each key groove structure comprises a flat key and a key groove formed in the ball head, one end of the flat key is locked on the ball head seat through a first screw, the other end of the flat key is located in the key groove, and the left side face, the right side face and the bottom face of the flat key abut against the left side face, the right side face and the bottom face of the key groove respectively. The bottom face of the flat key abuts against the bottom face of the key groove to limit swinging of the ball head, the left side face and the right side face of the flat key abut against the left side face and the right side face of the key groove to limit rotation of the ball head, and therefore swinging of the ceiling fan is reduced, and stability and reliability of hanging are guaranteed. The key groove disclosed by the technical scheme is relatively simple in structure, convenient and rapid to install and capable of reducing the production cost.

Description

Technical Field

[0001] The utility model relates to a hanging device for a ceiling fan. Background Art

[0002] In the prior art, such as the utility model patent of the applicant's earlier authorization announcement number CN 206694327 U, entitled "A hanging structure for reducing the swing of a ceiling fan", the hanging structure includes a hanger, a hanging ball and a hanging rod that can be installed on the ceiling, the hanger is provided with a hanging ball box, and the hanging ball is installed in the hanging ball box. In order to reduce the swing of the ceiling fan, a clamping assembly for pressing the hanging ball in the hanging ball box is designed. The clamping assembly includes a pressure cover, which is provided with a second arc-shaped protrusion that cooperates with the hanging ball, and the second arc-shaped protrusion is used to press the hanging ball to limit its swing. However, this measure of limiting the swing by using the friction force of close contact will be affected by the assembly gap and wear and tear during use, and its stability and reliability are relatively low. Moreover, in order to ensure the matching accuracy of the second arc-shaped protrusion and the hanging ball, the production cost will increase. Summary of the invention

[0003] The utility model aims to provide a suspension device for a ceiling fan, comprising a ceiling bracket that can be locked on the ceiling, a ball head and a suspension rod for installing a motor, the ball head being installed at one end of the suspension rod, the ceiling bracket being provided with a ball head seat for supporting the ball head, the ball head being installed on the ball head seat; a plurality of groups of keyway structures circumferentially spaced around the axis of the suspension rod are provided between the ball head and the ball head seat; each group of keyway structures comprises a flat key and a keyway provided on the ball head, the keyway extending downward from the top surface of the ball head so that the notch of the keyway is located on the top surface of the ball head, one end of the flat key is locked on the ball head seat by a first screw, and the other end of the flat key is located in the keyway, wherein the left side surface, right side surface and bottom surface of the flat key are respectively against the left side surface, right side surface and bottom surface of the keyway.

[0004] The utility model uses the bottom surface of the flat key to abut against the bottom surface of the key slot to limit the swing of the ball head, and uses the left and right sides of the flat key to abut against the left and right sides of the key slot to limit the rotation of the ball head, thereby reducing the swing of the ceiling fan and ensuring the stability and reliability of the suspension. The key slot structure disclosed in the technical solution is relatively simple, easy and quick to install, and can reduce production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0005] Figure 1 Shows a front view of the utility model;

[0006] Figure 2 Shows a top view of the utility model;

[0007] Figure 3 Shows Figure 2 AA section view;

[0008] Figure 4 Shows Figure 2 BB sectional view, in which only the keyway structure is shown;

[0009] Figure 5 Shown in Figure 4 Schematic diagram of separating the flat key from the keyway based on the principle of FIG.

[0010] Figure 6 Shown in Figure 3 Schematic diagram of the decorative cover and the bottom bracket being separated from the suspension rod;

[0011] Figure 7 and Figure 8 Two stereograms of the utility model at different angles are shown respectively;

[0012] Fig. 9 and Fig.10 Two three-dimensional exploded views of the utility model at different angles are shown respectively;

[0013] Fig.11 and Fig.12 Two stereoscopic views of the utility model at different angles behind the hidden decorative cover are shown respectively;

[0014] Fig.13 Shown in Fig.11 Schematic diagram of the components after separation based on the .

[0015] Figure Number:

[0016] 10 ceiling bracket, 101 ball head seat; 20 ball head, top surface of 201 ball head; 30 hanging rod, 301 screw barrel, 302 second screw; 40 keyway structure; 50 flat key, left side of 501 flat key, right side of 502 flat key, bottom surface of 503 flat key; 60 keyway, notch of 601 keyway, left side of 602 keyway, right side of 603 keyway, bottom surface of 604 keyway; 70 first screw; 80 decorative cover; 90 bottom support, 901 cylinder part, 902 annular support plate part. DETAILED DESCRIPTION

[0017] The present application scheme is further described below in conjunction with the accompanying drawings.

[0018] like Figures 1 to 13 The suspension device of a ceiling fan shown in the figure comprises a ceiling bracket 10 that can be locked on the ceiling, a ball head 20 and a suspension rod 30 for installing a motor (not shown in the figure), the ball head 20 is installed at one end of the suspension rod 30, the ceiling bracket 10 is provided with a ball head seat 101 for supporting the ball head, and the ball head 20 is installed on the ball head seat 101;

[0019] A plurality of keyway structures 40 are provided between the ball head 20 and the ball head seat 101 and are circumferentially spaced around the axis L of the suspension rod;

[0020] Each set of keyway structures 40 includes a flat key 50 and a keyway 60 provided on the ball head 20, wherein the keyway 60 extends downward from the top surface 201 of the ball head so that the notch 601 of the keyway is located on the top surface 201 of the ball head, so that the flat key 50 can be placed in the keyway 60 from top to bottom, one end of the flat key 50 is locked on the ball head seat 101 by a first screw 70, and the other end of the flat key 60 is located in the keyway 60, wherein the left side 501, the right side 502 and the bottom surface 503 of the flat key are respectively against the left side 602, the right side 603 and the bottom surface 604 of the keyway.

[0021] The technical solution uses the bottom surface of the flat key to abut against the bottom surface of the keyway to limit the swing of the ball head, and uses the left and right sides of the flat key to abut against the left and right sides of the keyway to limit the rotation of the ball head, thereby reducing the swing of the ceiling fan and ensuring the stability and reliability of the suspension. The keyway structure disclosed in the technical solution is relatively simple, easy and quick to install, and can reduce production costs.

[0022] There are three groups of key slot structures 40, and the three groups of key slot structures 40 are evenly spaced, that is, the angle between two adjacent groups of key slot structures is 120 degrees. The technical solution is reasonably designed and can simplify the structure while effectively reducing the swing of the ceiling fan.

[0023] The suspension device of the ceiling fan also includes a decorative cover 80, a bottom bracket 90 and a screw barrel 301 which are covered outside the ceiling frame 10;

[0024] The screw barrel 301 is sleeved outside the hanging rod 30, and the screw barrel 301 is locked on the hanging rod 30 through the second screw 302. In this embodiment, the second screw 302 is a top screw, and the outer wall of the screw barrel 301 is provided with an external thread;

[0025] The base 90 includes a barrel 901 and an annular support plate 902 disposed on the outer wall of the barrel 901. The inner wall of the barrel 901 is provided with an internal thread.

[0026] The cylindrical portion 901 of the base passes through the decorative cover 80, and the bottom of the decorative cover 80 is supported on the annular support plate portion 902. In particular, the decorative cover 80 can be clamped between the ceiling and the annular support plate portion 902.

[0027] The barrel portion 901 of the base is sleeved outside the screw barrel 301 , and the internal thread of the barrel portion 901 is connected to the external thread of the screw barrel 301 .

[0028] In the prior art, for example, in the utility model patent of the applicant's earlier authorization announcement number CN 206694327 U, entitled "A Decorative Ceiling Fan Remote Control Receiver Quick Installation Structure", in order to cover the hanger on the ceiling (i.e., ceiling mount), a ceiling fan upper cup (i.e., decorative cover) is provided on the outer cover of the hanger. The ceiling fan upper cup is locked on the hanger by screws on the side, but the screws are too close to the ceiling and are not easy to screw.

[0029] In this embodiment, the decorative cover is installed on the hanging rod by means of the cooperation between the base and the screw barrel, which not only facilitates the installation of the decorative cover but also hides all the screws, thereby improving the aesthetics of the product.

Claims

1. A suspension device for a ceiling fan, comprising a ceiling mount that can be locked on a ceiling, a ball head and a suspension rod for mounting a motor, the ball head being mounted on one end of the suspension rod, the ceiling mount being provided with a ball head seat for supporting the ball head, the ball head being mounted on the ball head seat, characterized in that: A plurality of keyway structures are arranged between the ball head and the ball head seat and are spaced apart circumferentially around the axis of the suspension rod; Each set of keyway structures includes a flat key and a keyway provided on the ball head, the keyway extends downward from the top surface of the ball head so that the notch of the keyway is located on the top surface of the ball head, one end of the flat key is locked on the ball head seat by a first screw, and the other end of the flat key is located in the keyway, wherein the left side, right side and bottom surface of the flat key are respectively against the left side, right side and bottom surface of the keyway.

2. The suspension device for a ceiling fan according to claim 1, characterized in that: The keyway structures have three groups, and the three groups of keyway structures are distributed at equal intervals.

3. The suspension device for a ceiling fan according to claim 1 or 2, characterized in that: The suspension device of the ceiling fan also includes a decorative cover, a bottom bracket and a screw barrel covered outside the ceiling frame; The screw barrel is sleeved outside the hanging rod, and the screw barrel is locked on the hanging rod through a second screw, and the outer wall of the screw barrel is provided with an external thread; The base includes a barrel and an annular support plate provided on the outer wall of the barrel, and the inner wall of the barrel is provided with an internal thread; The cylindrical portion of the base passes through the decorative cover, and the bottom of the decorative cover is supported on the annular support plate portion; The barrel portion of the base is sleeved outside the screw barrel, and the internal thread of the barrel portion is connected with the external thread of the screw barrel.

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