Telescopic fan structure

Abstract

The utility model provides a telescopic fan structure, which relates to the technical field of telescopic fans and comprises a base. In the use process, through matched use of the base, the mounting sleeve, the bearing rod, the clamping grooves, the sliding grooves, the sliding blocks and the braking assemblies, when the bearing rod stretches upwards, the bearing rod can stretch from the interior of the mounting sleeve from bottom to top only by pulling the bearing rod upwards, and the braking blocks can avoid along with sliding friction and front-back reciprocating motion of the surfaces of the clamping grooves; when the bearing rod is stretched and adjusted, the brake block can be clamped on the inner side of one clamping groove corresponding to the bearing rod under the elastic reset effect of a plurality of springs, the top of the large section of the brake block is attached to the inner top of the clamping groove, the abutting and fixing effect is achieved, the connecting block is pulled to drive the brake block to move outwards, and therefore the bearing rod is stretched and adjusted. And therefore, the effect of rapid contraction is achieved, and the telescopic fan structure can be conveniently used by personnel.

Description

Technical Field

[0001] The utility model relates to the technical field of telescopic fans, in particular to a telescopic fan structure. Background Art

[0002] A fan refers to a tool for generating wind and cooling in hot weather. An electric fan is a device that uses electricity to drive the generation of air flow. The fan inside is rotated after being powered on to form a natural wind to achieve the effect of cooling. The main component of an electric fan is an AC motor. Its working principle is that a current-carrying coil is forced to rotate in a magnetic field, and the form of energy conversion is mainly the conversion of electrical energy into mechanical energy. At the same time, because the coil has resistance, inevitably a part of the electrical energy has to be converted into heat energy. When the electric fan is working, since there is current passing through the coil of the electric fan and the wire has resistance, heat will inevitably be generated and released outward, so the temperature will rise. At this time, the air in the room will flow, so it can promote the rapid evaporation of sweat. Combining the fact that evaporation requires absorbing a large amount of heat, people will feel cool.

[0003] In the prior art, such as a fan with a telescopic structure in Chinese Patent CN211666915U, it includes a handle. A telescopic adjustment cavity is vertically opened in the middle of the handle. A telescopic arm is inserted into the telescopic adjustment cavity. A fan base is fixed at the top of the telescopic arm. A rotating shaft is horizontally arranged in the middle of the fan base. A fan blade is installed at one end of the rotating shaft. A protective cover fixed to the telescopic arm is clamped outside the fan blade. A first connector is arranged at the bottom end of the telescopic arm. For the fan with a telescopic structure of the utility model, by inserting the telescopic arm between the telescopic adjustment cavities in the middle of the handle and fixing it between the positioning slot and the positioning hole by hand-tightening the bolt, the fixing of the telescopic arm can be realized, so that the fan can be adjusted telescopically in a convenient manner. When the fan needs to be placed on the table, the second connector at the top of the rotation adjustment head can be screwed tightly between the inner walls at the bottom end of the first connector and fixed through the positioning seat. The disassembly and assembly are convenient, and the damping rotating shaft facilitates the adjustment of the fan angle orientation.

[0004] In the above patent, through the mutual cooperation of hand-tightening screws and multiple positioning holes, the telescopic arm can be adjusted telescopically, and has a good adjustment effect. However, during the adjustment process, it is necessary to align one of the positioning holes with the corresponding height with the hand-tightening screw, and then manually rotate the hand-tightening screw to make it turn into the positioning hole at the corresponding position to fix the height of the telescopic fan. The adjustment process is relatively cumbersome and not convenient to use. Summary of the Utility Model

[0005] The utility model aims to solve the problem in the prior art that when a fan is telescopically fixed, a hand screw is matched with a plurality of positioning holes, and the hand screw needs to be manually rotated to fix the fan after telescopic adjustment, which is inconvenient to use, and a retractable fan structure is proposed.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a retractable fan structure, comprising: a base, a mounting sleeve is arranged at the top center of the base, the inner surface of the mounting sleeve is matched with a load-bearing rod, the outer surface of the load-bearing rod is equidistantly provided with a plurality of slots, and a brake assembly is arranged on the outer surface of the mounting sleeve near the top; a brake assembly, the brake assembly comprises a fixed block and a brake block, the fixed block is arranged on the outer surface of the mounting sleeve, the front surface of the fixed block is fixedly connected with a sealing plate, the brake block is located on the front side of the fixed block, the rear surface of the brake block is fixedly connected with a connecting rod near the four corners, the outer surfaces of the plurality of connecting rods slide through the rear surfaces of the fixed block and the sealing plate in turn, the outer surfaces of the plurality of connecting rods are fixedly connected with the connecting plate, and the outer surfaces of the plurality of connecting rods near the rear surface of the connecting plate are respectively sleeved with springs.

[0007] Preferably, the spring is located between the relative outer surfaces of the connecting plate and the sealing plate, and the spring and the connecting plate are matched with each other.

[0008] Preferably, the front outer surface of the brake block is arc-shaped, and the brake block and the slot are matched with each other.

[0009] Preferably, the outer surfaces of the bearing rods are respectively provided with sliding grooves, and the inner surface of the mounting sleeve is symmetrically provided with sliding blocks, and the sliding blocks and the sliding grooves are matched with each other.

[0010] Preferably, the rear end surfaces of the plurality of connecting rods are fixedly connected with connecting blocks, and the connecting blocks are in an I-shape.

[0011] Preferably, the top and bottom of the fixing block are symmetrically fixedly connected with mounting blocks respectively, and the inner surfaces of the plurality of mounting blocks are matched with bolts.

[0012] Preferably, outer surfaces of the plurality of bolts are rotated to penetrate the outer surface of the mounting sleeve, and the outer surfaces of the plurality of bolts are threadedly connected to the inner surface wall of the mounting sleeve.

[0013] Compared with the prior art, the advantages and positive effects of the utility model are:

[0014] 1. In the present utility model, during use, through the coordinated use of the base, mounting sleeve, load-bearing rod, card slots, sliding grooves, sliders, and braking components, when the load-bearing rod extends upward, only by pulling the load-bearing rod upward, the load-bearing rod will extend upward from the inside of the mounting cylinder, and the braking block will slide and rub along the surfaces of multiple card slots, moving back and forth to avoid interference, without causing a large resistance to the load-bearing rod. After the extension adjustment, under the elastic reset action of multiple springs, the braking block will engage inside one of the card slots corresponding to the position, and the top of its larger cross-section will fit against the inner top of the card slot, playing a role of resisting and fixing. By pulling the connecting block to drive the braking block to move outward, the resistance and fixation of the load-bearing rod can be released, playing a role of rapid contraction, which is convenient for personnel to use the retractable fan structure.

[0015] 2. In the present utility model, during use, when the load-bearing rod expands and contracts up and down, it will be limited and slide on the surfaces of two sliders inside the mounting sleeve through two sliding grooves, playing a role of limiting, preventing its position from shifting during the expansion and contraction process, resulting in deviations in the positions of multiple card slots and braking blocks, and thus eliminating the need for personnel to carefully calibrate, improving the stability of the retractable fan structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a three-dimensional view of a retractable fan structure proposed by the present utility model;

[0017] Figure 2 is a schematic structural diagram of the braking component of a retractable fan structure proposed by the present utility model;

[0018] Figure 3 is a schematic structural diagram of the mounting sleeve of a retractable fan structure proposed by the present utility model;

[0019] Figure 4 is a schematic structural diagram of the load-bearing rod of a retractable fan structure proposed by the present utility model.

[0020] Legend: 1. Base; 2. Mounting sleeve; 3. Load-bearing rod; 4. Card slot; 5. Braking component; 501. Fixed block; 502. Mounting block; 503. Bolt; 504. Sealing plate; 505. Connecting rod; 506. Connecting block; 507. Spring; 508. Connecting plate; 509. Braking block; 6. Sliding groove; 7. Slider. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] In order to more clearly understand the above-mentioned objects, features, and advantages of the present utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0022] In the following description, many specific details are set forth in order to provide a thorough understanding of the present utility model. However, the present utility model may also be implemented in other ways different from those described herein. Therefore, the present utility model is not limited by the limitations of the specific embodiments disclosed in the following specification.

[0023] Embodiment 1, as Figures 1-4 shown, the present utility model provides a telescopic fan structure, including: a base 1, an installation sleeve 2 is provided at the center of the top of the base 1, a bearing rod 3 is provided on the inner surface of the installation sleeve 2 in a matching manner, a plurality of card slots 4 are equidistantly opened on the outer surface of the bearing rod 3, and a braking assembly 5 is provided at a position near the top of the outer surface of the installation sleeve 2; the braking assembly 5, the braking assembly 5 includes a fixed block 501 and a braking block 509, the fixed block 501 is provided on the outer surface of the installation sleeve 2, a sealing plate 504 is fixedly connected to the front surface of the fixed block 501, the braking block 509 is located on the front side of the fixed block 501, connecting rods 505 are fixedly connected to the rear surface of the braking block 509 near the four corners, the outer surfaces of the plurality of connecting rods 505 sequentially slide through the rear surfaces of the fixed block 501 and the sealing plate 504, connecting plates 508 are fixedly connected to the outer surfaces of the plurality of connecting rods 505, springs 507 are respectively sleeved on the outer surfaces of the plurality of connecting rods 505 near the rear surface of the connecting plate 508, the springs 507 are located between the opposite outer surfaces of the connecting plate 508 and the sealing plate 504, the springs 507 and the connecting plate 508 are provided in a matching manner, the front outer surface of the braking block 509 is arc-shaped, the braking block 509 and the card slot 4 are provided in a matching manner, and connecting blocks 506 are fixedly connected to the rear ends of the plurality of connecting rods 505, and the connecting blocks 506 are in an I-shaped configuration.

[0024] The effect achieved by the entire embodiment 1 is that when the retractable fan structure is in use, the load-bearing rod 3 is held and pulled upward to extend outward from the mounting sleeve 2 fixedly arranged on the top of the base 1, the outwardly extending portion of the load-bearing rod 3 will continuously slide and rub against the surface of the brake block 509 in sequence, and the multiple connecting rods 505 fixedly connected to the rear surface of the brake block 509 will slide backwards between the inner walls of the fixed block 501 and the sealing plate 504 correspondingly with the uneven surface of the multiple slots 4, and the connecting plates 508 fixedly connected to the surfaces of the multiple connecting rods 505 will squeeze the multiple springs 507, and under the elastic resetting action of the multiple springs 507, the connecting plates 508 are reset and squeezed in the reverse direction, playing a reciprocating sliding effect, and because the front side of the brake block 509 is arc-shaped and the cross-section of the brake block 509 is wide at the top and narrow at the bottom, the load-bearing rod 3 moves outward from bottom to top. When extended, the brake block 509 will slide and rub along the surface of the multiple slots 4, and move back and forth to avoid. The brake block 509 will not cause much resistance to the load-bearing rod 3. After the load-bearing rod 3 is extended and adjusted, under the continuous elastic reset action of the multiple springs 507, the brake block 509 will be engaged with the inner side of one of the slots 4 corresponding to the position, and the top of its larger cross-section will fit with the inner top of the slot 4, playing a fixing role, preventing it from shrinking and sliding into the mounting sleeve 2 under the action of gravity. When it is necessary to adjust the load-bearing rod 3 to shrink inwardly, it is only necessary to pull the I-shaped connecting block 506 to drive the multiple connecting rods 505 to move backward, so that the brake block 509 shrinks into the inner wall of the mounting sleeve 2, which can release the interference and fixation on the load-bearing rod 3, and play a role of rapid contraction, which is convenient for people to use the retractable fan structure.

[0025] Embodiment 2, as Figures 1-4 As shown, the top and bottom of the fixed block 501 are symmetrically fixedly connected with the mounting blocks 502, the inner surfaces of the multiple mounting blocks 502 are matched with bolts 503, the outer surfaces of the multiple bolts 503 are rotated to penetrate the outer surface of the mounting sleeve 2, the outer surfaces of the multiple bolts 503 are threadedly connected with the inner wall of the mounting sleeve 2, the outer surfaces of the load-bearing rod 3 are respectively provided with sliding grooves 6, the inner surface of the mounting sleeve 2 is symmetrically provided with sliders 7, and the sliders 7 and the sliding grooves 6 are matched.

[0026] The effect achieved by the entire embodiment 2 is that, during installation, the fixing block 501 is inserted into the corresponding mounting block 502 through the matching bolts 503, and is screwed in sequence to rotate it into the inner wall of the mounting sleeve 2 and be threadedly connected thereto, thereby facilitating installation and disassembly. During the upward and downward extension process, the load-bearing rod 3 will slide on the surfaces of the two sliders 7 in the mounting sleeve 2 through the two slide grooves 6, thereby playing a limiting role and preventing its position from shifting during the extension process, resulting in deviations in the positions of multiple slots 4 and the brake block 509, which requires careful calibration by personnel, thereby improving the stability of the retractable fan structure.

[0027] Working principle: When the retractable fan structure is in use, hold the load-bearing rod 3 and pull it upward to make it extend outward from the mounting sleeve 2 fixedly set on the top of the base 1. The outwardly extending part of the load-bearing rod 3 will continuously slide and rub against the surface of the brake block 509 in sequence. The multiple connecting rods 505 fixedly connected to the rear surface of the brake block 509 will slide backwards between the inner walls of the fixed block 501 and the sealing plate 504 on the uneven surface of the multiple card slots 4. The connecting plates 508 fixedly connected to the surfaces of the multiple connecting rods 505 will squeeze the multiple springs 507. Under the elastic restoring action of the spring 507, the connecting plate 508 is reset and squeezed in the reverse direction, which plays a role of reciprocating sliding. Since the front side of the brake block 509 is in an arc shape and the cross-section of the brake block 509 is wide at the top and narrow at the bottom, when the load-bearing rod 3 extends outward from bottom to top, the brake block 509 will slide and rub along the surfaces of the multiple slots 4, and reciprocate back and forth to avoid. The brake block 509 will not cause a large resistance to the load-bearing rod 3. After the extension adjustment of the load-bearing rod 3 is completed, the brake block 509 will be engaged under the continuous elastic restoring action of the multiple springs 507. On the inner side of one of the corresponding slots 4, the top of the larger cross-section fits with the inner top of the slot 4, which plays a fixing role and prevents it from shrinking and sliding into the installation sleeve 2 under the action of gravity. When it is necessary to adjust the bearing rod 3 to shrink inward, it is only necessary to pull the I-shaped connecting block 506 to drive the multiple connecting rods 505 to move backward, so that the brake block 509 shrinks into the inner wall of the installation sleeve 2, and the resistance to the bearing rod 3 can be released, which plays a role of rapid contraction, making it convenient for personnel to use the retractable fan structure. When the bolt 503 is used, the fixing block 501 is inserted into the corresponding mounting block 502 through the matching bolt 503, and is screwed in turn to rotate it into the inner wall of the mounting sleeve 2 and be threadedly connected with it, which facilitates installation and disassembly. During the upward and downward extension process, the load-bearing rod 3 will slide on the surface of the two sliders 7 in the mounting sleeve 2 through the two slide grooves 6, which plays a limiting role and prevents its position from shifting during the extension process, resulting in deviations in the positions of multiple slots 4 and brake blocks 509, which requires careful calibration by personnel, thereby improving the stability of the retractable fan structure.

[0028] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A retractable fan structure, characterized in that: include: A base (1), wherein a mounting sleeve (2) is arranged at the top center of the base (1), a bearing rod (3) is matched with the inner surface of the mounting sleeve (2), a plurality of slots (4) are equidistantly formed on the outer surface of the bearing rod (3), and a brake assembly (5) is arranged near the top of the outer surface of the mounting sleeve (2); A brake assembly (5), the brake assembly (5) comprising a fixed block (501) and a brake block (509), the fixed block (501) being arranged on the outer surface of the mounting sleeve (2), the front surface of the fixed block (501) being fixedly connected to a sealing plate (504), the brake block (509) being located on the front side of the fixed block (501), the rear surface of the brake block (509) being fixedly connected to connecting rods (505) near four corners, the outer surfaces of the plurality of connecting rods (505) slidingly passing through the rear surfaces of the fixed block (501) and the sealing plate (504) in sequence, the outer surfaces of the plurality of connecting rods (505) being fixedly connected to a connecting plate (508), and the outer surfaces of the plurality of connecting rods (505) being close to the rear surface of the connecting plate (508) being respectively sleeved with springs (507).

2. The retractable fan structure according to claim 1, characterized in that: The spring (507) is located between the relative outer surfaces of the connecting plate (508) and the sealing plate (504), and the spring (507) and the connecting plate (508) are matched with each other.

3. The retractable fan structure according to claim 1, characterized in that: The front outer surface of the brake block (509) is in an arc shape, and the brake block (509) and the clamping slot (4) are arranged in a matching manner.

4. The retractable fan structure according to claim 1, characterized in that: The outer surfaces of the bearing rods (3) are respectively provided with sliding grooves (6), and the inner surface of the mounting sleeve (2) is symmetrically provided with sliding blocks (7), and the sliding blocks (7) and the sliding grooves (6) are matched with each other.

5. The retractable fan structure according to claim 1, characterized in that: The rear end surfaces of the plurality of connecting rods (505) are all fixedly connected with connecting blocks (506), and the connecting blocks (506) are in an I-shape.

6. The retractable fan structure according to claim 1, characterized in that: The top and bottom of the fixing block (501) are symmetrically fixedly connected to mounting blocks (502), and the inner surfaces of the plurality of mounting blocks (502) are matched with bolts (503).

7. The retractable fan structure according to claim 6, characterized in that: The outer surfaces of the plurality of bolts (503) are all rotated to penetrate the outer surface of the installation sleeve (2), and the outer surfaces of the plurality of bolts (503) are all threadedly connected to the inner surface wall of the installation sleeve (2).

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