Lifting rod structure of floor fan

Abstract

The utility model discloses a floor fan lifting rod structure which comprises a supporting sleeve rod, a lifting connecting rod is connected to the inner side of the supporting sleeve rod in a sliding mode, a center guide rod is connected to the inner side of the lifting connecting rod in a sliding mode, a plurality of positioning clamping grooves are formed in one side of the lifting connecting rod, and a limiting piece is installed on one side of the upper end of the supporting sleeve rod. An adjusting knob is installed on the inner side of the limiting piece, a clamping piece is installed at one end of the adjusting knob, and a supporting spring is arranged on the side edge of the clamping piece. A positioning seat is mounted on the inner side of the bottom end of the supporting sleeve rod, a plurality of spline grooves are formed in the middle of the upper end face of the positioning seat, a metal positioning bent rod is mounted between the positioning seat and the supporting sleeve rod, and a locking ring is mounted on the lower end face of the positioning seat. Threaded connection of the lifting rod of the floor fan is adjusted to knob clamping connection, and the situation that the service life is shortened due to thread stress deformation can be effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of floor fans, in particular to a lifting rod structure of a floor fan. Background Technique

[0002] The main features of floor fans are large air volume and low noise. In the hot summer, they have a good effect on indoor ventilation, heat prevention and cooling, and environmental improvement. Floor fans can be safely used by being placed steadily on the ground. Floor fans can be widely used in places such as warehouses, workshops, restaurants, and homes of industrial and mining enterprises. Floor fans are vertically supported through the assembly of a base and a lifting rod, and can achieve the blowing effect at different height positions.

[0003] The existing lifting rods of floor fans are usually assembled and lifted by means of threaded connection. During use, the lifting rod is prone to thread deformation under axial force, which in turn affects the lifting effect and service life. Therefore, it does not meet the existing requirements, and for this reason, we propose a lifting rod structure of a floor fan. Content of the Utility Model

[0004] The purpose of the utility model is to provide a lifting rod structure of a floor fan to solve the problem that the existing lifting rods of floor fans are usually assembled and lifted by means of threaded connection, and the lifting rod is prone to thread deformation under axial force during use, which in turn affects the lifting effect and service life as mentioned in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: A lifting rod structure of a floor fan, including a support sleeve rod, an inner side of the support sleeve rod is slidably connected with a lifting connecting rod, an inner side of the lifting connecting rod is slidably connected with a central guiding rod, a plurality of positioning slots are arranged on one side of the lifting connecting rod, a limiting piece is installed on one side of the upper end of the support sleeve rod, an adjusting knob is installed inside the limiting piece, a clamping piece is installed at one end of the adjusting knob, and a support spring is arranged on a side of the clamping piece;

[0006] A positioning seat is installed inside the bottom end of the support sleeve rod, a plurality of spline grooves are arranged in the middle of the upper end surface of the positioning seat, a metal positioning bent rod is installed between the positioning seat and the support sleeve rod, and a locking ring is installed on the lower end surface of the positioning seat.

[0007] Preferably, a bottom end of the central guiding rod penetrates through the support sleeve rod and is in fit contact with an upper end surface of the metal positioning bent rod, a bottom end of the support sleeve rod and the central guiding rod are connected by threads, and axes of the support sleeve rod, the lifting connecting rod and the central guiding rod coincide.

[0008] Preferably, the bottom end of the support sleeve rod is inserted into the inner sides of a plurality of spline grooves. The locking ring is threadedly connected to the support sleeve rod. The positioning seat is fixedly connected to the support sleeve rod through the locking ring, and the positioning seat is fixedly connected to the upper end of the metal positioning bent rod.

[0009] Preferably, the limiting piece is fixedly connected to the upper end of the support sleeve rod by screws. One end of the adjusting knob penetrates through the middle of the limiting piece and is inserted into the inner side of the middle of the clamping piece. The adjusting knob is threadedly connected to the limiting piece.

[0010] Preferably, the clamping piece linearly reciprocates along the axis of the adjusting knob. The support spring is arranged between the support sleeve rod and the clamping piece, and the support sleeve rod is connected to the clamping piece through the support spring.

[0011] Preferably, a plurality of positioning teeth are provided on one side of the clamping piece close to the lifting connecting rod. The positioning teeth are inserted and installed in the positioning card slots, and the clamping piece and the lifting connecting rod are clamped and installed through the positioning teeth and the positioning card slots.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] 1. In the present utility model, a plurality of spline grooves are provided in the middle of the upper end face of the positioning seat, so that the bottom end of the support sleeve rod is inserted into the inner sides of the spline grooves and is positioned and installed with the positioning seat. The locking ring is threadedly connected to the support sleeve rod to lock the positioning seat and the metal positioning bent rod. Then, the support sleeve rod can be easily fixed on the base of the floor fan through the metal positioning bent rod, which is convenient for maintaining the vertical stability of the lifting connecting rod under the guiding action of the support sleeve rod and the central guiding rod. The bottom end of the central guiding rod is threadedly connected to the support sleeve rod, and the lifting connecting rod vertically slides under the guiding action of the central guiding rod.

[0014] 2. In the present utility model, the adjusting knob axially pushes the clamping piece through the limiting piece. Then, the positioning teeth provided on one side of the clamping piece can be inserted into the positioning card slots provided on one side of the lifting connecting rod, realizing the positioning and clamping of the lifting connecting rod and the clamping piece through the positioning teeth and the positioning card slots, effectively avoiding the situation that the axial pressure causes thread deformation when the support sleeve rod and the lifting connecting rod are connected by threads. When the adjusting knob rotates in the reverse direction, the clamping piece can automatically separate from the lifting connecting rod under the elastic support of the support spring, thus facilitating the lifting adjustment of the lifting connecting rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of the whole of the present utility model;

[0016] Figure 2 is a schematic cross-sectional structural diagram of the whole of the present utility model;

[0017] Figure 3 Schematic enlarged structure view of area A in the present utility model Figure 2 ;

[0018] Figure 4 Schematic enlarged structure view of area B in the present utility model Figure 2 ;

[0019] Figure 5 Schematic partial explosion structure view of the whole of the present utility model

[0020] In the figure: 1, support sleeve rod; 2, lifting connecting rod; 3, metal positioning bent rod; 4, adjusting knob; 5, central guiding rod; 6, positioning slot; 7, limiting piece; 8, clamping piece; 9, supporting spring; 10, positioning seat; 11, locking ring; 12, spline groove Specific embodiments

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments

[0022] Please refer to Figures 1 to 5 , an embodiment provided by the present utility model: a floor fan lifting rod structure, including a support sleeve rod 1, a lifting connecting rod 2 is slidably connected to the inner side of the support sleeve rod 1, a central guiding rod 5 is slidably connected to the inner side of the lifting connecting rod 2, the bottom ends of the support sleeve rod 1 and the central guiding rod 5 are connected by threads, the axes of the support sleeve rod 1, the lifting connecting rod 2 and the central guiding rod 5 coincide, a plurality of positioning slots 6 are provided on one side of the lifting connecting rod 2, a limiting piece 7 is installed on one side of the upper end of the support sleeve rod 1, an adjusting knob 4 is installed on the inner side of the limiting piece 7, a clamping piece 8 is installed at one end of the adjusting knob 4, a plurality of positioning teeth are provided on the side of the clamping piece 8 close to the lifting connecting rod 2, the positioning teeth are inserted and installed with the positioning slots 6, the clamping piece 8 and the lifting connecting rod 2 are clamped and installed through the positioning teeth and the positioning slots 6. Positioning and clamping the lifting connecting rod 2 and the clamping piece 8 through the positioning teeth and the positioning slots 6 is convenient for maintaining the vertical stability of the lifting connecting rod 2 under the guiding action of the support sleeve rod 1 and the central guiding rod 5

[0023] The limiting piece 7 and the upper end of the support sleeve rod 1 are fixedly connected by screws, one end of the adjusting knob 4 passes through the middle of the limiting piece 7 and is inserted into the inner side of the middle of the clamping piece 8, the adjusting knob 4 and the limiting piece 7 are connected by threads, a supporting spring 9 is provided on the side of the clamping piece 8, the clamping piece 8 slides linearly and reciprocally along the axis of the adjusting knob 4, the supporting spring 9 is arranged between the support sleeve rod 1 and the clamping piece 8, the support sleeve rod 1 and the clamping piece 8 are connected by the supporting spring 9, and the clamping piece 8 can automatically separate from the lifting connecting rod 2 under the elastic support of the supporting spring 9, thereby facilitating the lifting adjustment of the lifting connecting rod 2

[0024] Please refer to Figure 1 、 Figure 4 and Figure 5 As shown in, an inner side of a bottom end of the support sleeve rod 1 is provided with a positioning seat 10. A plurality of spline grooves 12 are provided in a middle part of an upper end surface of the positioning seat 10. A bottom end of the support sleeve rod 1 is inserted into an inner side of the plurality of spline grooves 12. A metal positioning bent rod 3 is installed between the positioning seat 10 and the support sleeve rod 1. An upper end of the positioning seat 10 is fixedly connected to an upper end of the metal positioning bent rod 3. A bottom end of the central guide rod 5 penetrates through the support sleeve rod 1 and is in close contact with an upper end surface of the metal positioning bent rod 3. A locking ring 11 is installed on a lower end surface of the positioning seat 10. The locking ring 11 and the support sleeve rod 1 are threadedly connected. The positioning seat 10 and the support sleeve rod 1 are fixedly connected through the locking ring 11 to lock the positioning seat 10 and the metal positioning bent rod 3. Then, it is convenient to fix the support sleeve rod 1 on a base of a floor fan through the metal positioning bent rod 3.

[0025] During use, a plurality of spline grooves 12 are provided in a middle part of an upper end surface of the positioning seat 10, so that a bottom end of the support sleeve rod 1 is inserted into an inner side of the spline grooves 12 and is positioned and installed with the positioning seat 10. An upper end of the metal positioning bent rod 3 penetrates through the positioning seat 10 and is inserted between the positioning seat 10 and the support sleeve rod 1. The metal positioning bent rod 3 is fixedly connected to the positioning seat 10. The locking ring 11 and the support sleeve rod 1 are threadedly connected to lock the positioning seat 10 and the metal positioning bent rod 3.

[0026] Then, it is convenient to fix the support sleeve rod 1 on a base of a floor fan through the metal positioning bent rod 3. A bottom end of the central guide rod 5 and the support sleeve rod 1 are threadedly connected, so that the lifting connecting rod 2 is inserted between the support sleeve rod 1 and the central guide rod 5. When adjusting a height of the lifting connecting rod 2, the lifting connecting rod 2 slides vertically under a guiding action of the central guide rod 5, and then the adjusting knob 4 is rotated.

[0027] The adjusting knob 4 and the limiting piece 7 are threadedly connected, so that the adjusting knob 4 axially pushes the clamping piece 8 through the limiting piece 7. Then, a positioning tooth provided on one side of the clamping piece 8 can be inserted into a positioning card slot 6 provided on one side of the lifting connecting rod 2, so as to realize positioning and clamping of the lifting connecting rod 2 and the clamping piece 8 through the positioning tooth and the positioning card slot 6. Further, it is convenient to maintain vertical stability of the lifting connecting rod 2 under guiding actions of the support sleeve rod 1 and the central guide rod 5, effectively avoiding a situation that a threaded deformation is caused by an axial pressure when the support sleeve rod 1 and the lifting connecting rod 2 are connected by a threaded connection. A support spring 9 is provided between the support sleeve rod 1 and the clamping piece 8, so that when the adjusting knob 4 rotates reversely, the clamping piece 8 can automatically separate from the lifting connecting rod 2 under an elastic supporting action of the support spring 9, and further, it is convenient to adjust lifting of the lifting connecting rod 2.

[0028] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-described exemplary embodiments, and the present utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present utility model. Any reference signs in the claims should not be construed as limiting the claims involved.

Claims

1. A floor fan lifting rod structure, comprising a supporting sleeve rod (1), characterized in that: The inner side of the support sleeve rod (1) is slidably connected to a lifting connecting rod (2), the inner side of the lifting connecting rod (2) is slidably connected to a central guide rod (5), one side of the lifting connecting rod (2) is provided with a plurality of positioning slots (6), one side of the upper end of the support sleeve rod (1) is provided with a limit plate (7), the inner side of the limit plate (7) is provided with an adjusting knob (4), one end of the adjusting knob (4) is provided with a clamping plate (8), and the side of the clamping plate (8) is provided with a supporting spring (9); A positioning seat (10) is installed on the inner side of the bottom end of the support sleeve rod (1), a plurality of spline grooves (12) are provided in the middle of the upper end surface of the positioning seat (10), a metal positioning bent rod (3) is installed between the positioning seat (10) and the support sleeve rod (1), and a locking ring (11) is installed on the lower end surface of the positioning seat (10).

2. A floor fan lifting rod structure according to claim 1, characterized in that: The bottom end of the central guide rod (5) passes through the support sleeve rod (1) and is in close contact with the upper end surface of the metal positioning bent rod (3); the support sleeve rod (1) and the bottom end of the central guide rod (5) are connected by threads; the axes of the support sleeve rod (1), the lifting connecting rod (2) and the central guide rod (5) coincide.

3. A floor fan lifting rod structure according to claim 2, characterized in that: The bottom end of the support sleeve rod (1) is inserted into the inner side of a plurality of spline grooves (12), the locking ring (11) is connected to the support sleeve rod (1) via threads, the positioning seat (10) is fixedly connected to the support sleeve rod (1) via the locking ring (11), and the positioning seat (10) is fixedly connected to the upper end of the metal positioning bent rod (3).

4. The lifting rod structure of a floor fan according to claim 1, characterized in that: The limiting plate (7) is fixed to the upper end of the supporting sleeve rod (1) by means of screws, one end of the adjusting knob (4) passes through the middle of the limiting plate (7) and is plugged into the inner side of the middle of the clamping plate (8), and the adjusting knob (4) is connected to the limiting plate (7) by means of threads.

5. A floor fan lifting rod structure according to claim 4, characterized in that: The clamping piece (8) slides linearly back and forth along the axis of the adjusting knob (4); the supporting spring (9) is arranged between the supporting sleeve rod (1) and the clamping piece (8); and the supporting sleeve rod (1) and the clamping piece (8) are connected via the supporting spring (9).

6. A floor fan lifting rod structure according to claim 5, characterized in that: A plurality of positioning teeth are provided on one side of the clamping piece (8) close to the lifting connecting rod (2); the positioning teeth are plugged into and installed in the positioning clamping slots (6); and the clamping piece (8) and the lifting connecting rod (2) are clamped and installed via the positioning teeth and the positioning clamping slots (6).

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