Improved structure of fan

Abstract

The utility model discloses an improved fan structure which comprises a machine head assembly and a supporting assembly, the machine head assembly is provided with a rotating seat, the top of the supporting assembly is detachably connected with a fixing seat, the improved fan structure further comprises a connecting seat, the top of the connecting seat and the bottom of the rotating seat are rotationally connected through a pivot in the radial direction, and the fixing seat and the connecting seat are axially connected and fixed through a connecting piece. The fixed seat is provided with a shielding part, the shielding part extends upwards to wrap the pivot rotating connection part, and the shielding part is provided with a receding notch corresponding to the rotating track of the rotating seat. The shielding part shields the rotating connection part of the pivot, dust accumulation is reduced, the connection part of the fixed seat and the connection seat is also designed in a hidden mode, and the overall appearance is attractive.

Description

Technical Field

[0001] The utility model relates to the technical field of fans, in particular to an improved structure of a floor fan or a table fan. Background Art

[0002] At present, the floor fan includes a head assembly and a support assembly. In order to facilitate the head assembly to rotate relative to the support assembly in the vertical direction to adjust the air outlet angle, the head assembly and the support assembly are rotatably connected through a rotating shaft. The rotating connection part is exposed, easy to accumulate dust, difficult to clean, and not beautiful. Utility Model Content

[0003] The utility model aims to provide an improved fan structure with a head assembly and a supporting assembly whose rotating connection parts are hidden.

[0004] The purpose of the utility model is achieved in this way.

[0005] A fan improvement structure includes a head assembly and a support assembly, the head assembly is provided with a rotating seat, the top of the support assembly is detachably connected to a fixed seat, and also includes a connecting seat, the top of the connecting seat and the bottom of the rotating seat are radially connected by a pivot rotation, the fixed seat and the connecting seat are axially connected and fixed by a connecting piece, the fixed seat is provided with a shielding portion, the shielding portion extends upward to wrap around the pivot rotation connection portion, and the shielding portion is provided with a yielding notch corresponding to the rotation trajectory of the rotating seat.

[0006] The utility model shields the pivotal connection part through the shielding part, thereby reducing dust accumulation. The connection part between the fixing seat and the connection seat is also hidden, and the overall appearance is beautiful.

[0007] The above technical solution can be further improved as follows.

[0008] Furthermore, the rotating seat extends a protrusion downward, and the rotating seat is provided with cutouts on both sides of the corresponding protrusion, the protrusion is provided with a first axial hole in the radial direction, the top of the connecting seat is provided with a first slot for inserting the protrusion, the connecting seat is provided with a second axial hole in the radial direction, the second axial hole is connected to the first slot, the rotating seat is inserted into the first slot through the protrusion, the first axial hole and the second axial hole are aligned and connected by the pivot. The connection structure of the rotating seat and the connecting seat is simple and easy to implement.

[0009] Furthermore, the top surface of the cut-off portion is an upper concave arc surface, and the corresponding top surface of the connecting seat is a first upper convex arc surface, and the upper concave arc surface and the first upper convex arc surface are matched concavely and convexly. The gap between the rotating seat and the connecting seat is small, dust is not easy to accumulate, and the rotating seat is convenient to rotate.

[0010] Furthermore, the bottom surface of the protrusion is a downward convex arc surface, and the corresponding bottom surface of the first slot is a downward concave arc surface, and the downward convex arc surface and the downward concave arc surface are matched with each other. The rotating seat is easy to rotate.

[0011] Furthermore, a limiting convex portion is provided at the center of the concave arc surface, and a limiting slide groove is provided on the convex block. The limiting convex portion is placed in the limiting slide groove. During the rotation of the rotating seat around the pivot, the limiting convex portion moves relatively in the limiting slide groove. When the limiting convex portion and one side of the limiting slide groove abut against each other, the rotating seat is restricted from further rotation. The rotation range of the rotating seat is limited.

[0012] Furthermore, the outer end of the second shaft hole is a hexagonal countersunk hole, and the pivot is composed of a hexagonal bolt and a hexagonal nut. The hexagonal countersunk hole further accommodates the pivot, reduces the volume and avoids interference between the pivot and the shielding part.

[0013] Furthermore, a second slot is formed between two shielding parts extending from the top of the fixing seat, and the side of the second slot is opened to form the said clearance gap, the bottom of the connecting seat is placed in the second slot, the fixing seat is axially provided with a second countersunk hole connected to the second slot, and the bottom surface of the connecting seat is provided with a screw hole corresponding to the second countersunk hole, and the connecting member is a bolt, and the bolt passes through the second countersunk hole and the screw hole for threaded connection to connect and fix the fixing seat and the connecting seat. The connection structure between the fixing seat and the shielding part is simple and easy to implement.

[0014] Furthermore, an outer thread is provided on the outer periphery of the bottom of the fixing seat, an inner thread hole is provided on the top of the supporting assembly, and the bottom of the fixing seat is inserted into the inner thread hole for threaded connection. The fixing seat and the supporting assembly are connected to hide the connection part of the fixing seat and the shielding part.

[0015] Furthermore, the top surface of the shielding portion is a second upper convex arc surface that matches the upper concave arc surface. The fixed seat hides the connecting seat, and the gap between the fixed seat and the rotating seat is small, and the rotation of the rotating seat is not affected.

[0016] The utility model shields the pivotal connection part through the shielding part to reduce dust accumulation. The connection part between the fixed seat and the connecting seat is also hidden. The connection between the fixed seat and the supporting component hides the connection part between the fixed seat and the shielding part, which is not easy to accumulate dust and has a beautiful overall appearance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural diagram of embodiment 1.

[0018] Figure 2 It is a schematic diagram of the partial decomposition structure of the first embodiment.

[0019] Figure 3 It is a schematic diagram of the vertical cross-section structure of the first embodiment.

[0020] Figure 4 for Figure 3 Enlarged schematic diagram of part A in the middle.

[0021] Figure 5 It is a schematic diagram of the horizontal cross-section structure of the first embodiment. DETAILED DESCRIPTION

[0022] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0023] Example 1, see Figure 1-5 As shown, an improved fan structure includes a head assembly 1, a support assembly 5 and a connecting seat 3, and the support assembly 5 supports the head assembly 1.

[0024] The head assembly 1 is provided with a rotating seat 2, and a protrusion 21 is extended downward from the rotating seat 2. The rotating seat 2 is provided with cutouts 22 on both sides corresponding to the protrusion 21, and the top surface of the cutout 22 is an upward concave arc surface 23. The protrusion 21 is provided with a first axial hole 20 in the radial direction, and the bottom surface of the protrusion 21 is a downward convex arc surface 24, and the protrusion 21 is provided with a limiting slide groove 25.

[0025] The top of the connection seat 3 is provided with a first slot 30 for inserting the protrusion 21, and the connection seat 3 is provided with a second axial hole 31 in the radial direction, and the second axial hole 31 is connected to the first slot 30. The rotating seat 2 is inserted into the first slot 30 through the protrusion 21, and the first axial hole 20 and the second axial hole 31 are aligned and connected by pivot rotation. The outer end of the second axial hole 31 is a hexagonal countersunk hole 32, and the pivot (not shown in the figure) is composed of a hexagonal bolt and a hexagonal nut. The top surface of the connection seat 3 is a first upper convex arc surface 33, and the upper concave arc surface 23 and the first upper convex arc surface 33 are concave-convex matched. The bottom surface of the first slot 30 is a lower concave arc surface 34, and the lower convex arc surface 24 and the lower concave arc surface 34 are concave-convex matched. A limiting protrusion 35 is provided at the center of the concave arc surface 34, and the limiting protrusion 35 is placed in the limiting slide groove 25. During the rotation of the rotating seat 2 around the pivot, the limiting protrusion 35 moves relatively in the limiting slide groove 25. When the limiting protrusion 35 and one side of the limiting slide groove 25 are against each other, the rotating seat 2 is restricted from continuing to rotate.

[0026] The top of the support assembly 5 is detachably connected to the fixing seat 4. The fixing seat 4 is provided with two shielding parts 41 extending from the top to form a second slot 40, and the side of the second slot 40 is open to form the said clearance gap 42. The bottom of the connecting seat 3 is placed in the second slot 40, and the fixing seat 4 is axially provided with a second countersunk hole 43 connected to the second slot 40. The bottom surface of the connecting seat 3 is provided with a screw hole 36 corresponding to the second countersunk hole 43. The connecting member (not shown in the figure) is a bolt, and the bolt passes through the second countersunk hole 43 and the screw hole 36 to be threadedly connected to connect and fix the fixing seat 4 and the connecting seat 3. Specifically, the outer periphery of the bottom of the fixing seat 4 is provided with an external thread 44, and the top of the support assembly 5 is provided with an internal thread hole 51. The bottom of the fixing seat 4 is inserted into the internal thread hole 51 for threaded connection. The top surface of the shielding part 41 is a second upper convex arc surface 45 that cooperates with the upper concave arc surface 23.

[0027] In the utility model, the top of the connecting seat 3 and the bottom of the rotating seat 2 are connected radially by a pivot rotation, and the fixed seat 4 and the connecting seat 3 are axially connected and fixed by a connecting piece, so that the fixed seat 4 wraps the connecting seat 3, that is, the shielding part 41 shields the pivot rotation connection part, and the connection part of the head assembly 1 and the support assembly 5 is built-in, that is, a hidden effect is achieved, and the gap between the head assembly 1 and the support assembly 5 is not easy to accumulate dust, and the appearance is beautiful.

Claims

1. An improved fan structure, comprising a head assembly (1) and a support assembly (5), wherein the head assembly (1) is provided with a rotating seat (2), and is characterized in that: The top of the support assembly (5) is detachably connected to a fixed seat (4), and further comprises a connecting seat (3), the top of the connecting seat (3) and the bottom of the rotating seat (2) are connected in a radial direction via a pivot, the fixed seat (4) and the connecting seat (3) are connected and fixed axially via a connecting piece, the fixed seat (4) is provided with a shielding portion (41), the shielding portion (41) extends upward to wrap around the pivotal connection, and the shielding portion (41) is provided with a clearance notch (42) corresponding to the rotation trajectory of the rotating seat (2).

2. The fan improvement structure according to claim 1 is characterized in that: The rotating seat (2) extends a protrusion (21) downwardly, and the rotating seat (2) is provided with cut-off portions (22) on both sides corresponding to the protrusion (21). The protrusion (21) is provided with a first axial hole (20) in a radial direction, and a first slot (30) for inserting the protrusion (21) is provided at the top of the connecting seat (3). The connecting seat (3) is provided with a second axial hole (31) in a radial direction, and the second axial hole (31) is connected to the first slot (30). The rotating seat (2) is inserted into the first slot (30) through the protrusion (21), and the first axial hole (20) and the second axial hole (31) are aligned and rotatably connected through the pivot.

3. The fan improvement structure according to claim 2 is characterized in that: The top surface of the cut-off portion (22) is an upper concave arc surface (23), and the corresponding top surface of the connecting seat (3) is a first upper convex arc surface (33), and the upper concave arc surface (23) and the first upper convex arc surface (33) are matched in a concave-convex manner.

4. The fan improvement structure according to claim 2 is characterized in that: The bottom surface of the protrusion (21) is a downward convex arc surface (24), and the bottom surface of the corresponding first slot (30) is a downward concave arc surface (34). The downward convex arc surface (24) and the downward concave arc surface (34) are matched in a concave-convex manner.

5. The fan improvement structure according to claim 4 is characterized in that: A limiting convex portion (35) is provided at the center of the concave arc surface (34), and a limiting slide groove (25) is provided on the convex block (21). The limiting convex portion (35) is placed in the limiting slide groove (25). When the rotating seat (2) rotates around the pivot, the limiting convex portion (35) moves relatively in the limiting slide groove (25). When the limiting convex portion (35) and one side of the limiting slide groove (25) abut against each other, the rotating seat (2) is restricted from continuing to rotate.

6. The fan improvement structure according to claim 2 is characterized in that: The outer end of the second shaft hole (31) is a hexagonal countersunk hole (32), and the pivot is composed of a hexagonal bolt and a hexagonal nut.

7. The fan improvement structure according to claim 3 is characterized in that: The fixing seat (4) is provided with two shielding portions (41) extending from the top thereof, and a second slot (40) is formed between the two shielding portions (41). The side of the second slot (40) is open to form the said clearance gap (42). The bottom of the connecting seat (3) is placed in the second slot (40). The fixing seat (4) is axially provided with a second countersunk hole (43) communicating with the second slot (40). The bottom surface of the connecting seat (3) is provided with a screw hole (36) corresponding to the second countersunk hole (43). The connecting member is a bolt, and the bolt passes through the second countersunk hole (43) and the screw hole (36) to be threadedly connected, so as to connect and fix the fixing seat (4) and the connecting seat (3).

8. The fan improvement structure according to claim 7 is characterized in that: An outer circumference of the bottom of the fixing seat (4) is provided with an external thread (44), an internal thread hole (51) is provided at the top of the supporting assembly (5), and the bottom of the fixing seat (4) is inserted into the internal thread hole (51) for threaded connection.

9. The fan improvement structure according to claim 3 is characterized in that: The top surface of the shielding portion (41) is a second upper convex arc surface (45) that matches the upper concave arc surface (23).

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