Pedal fan with position-adjustable driven wheel

Abstract

The utility model provides a pedal fan with a position-adjustable driven wheel, which comprises pedal fan frames, a pedal fan base, pedal fixing seats, a variable-speed adjusting mechanism and pedals, two pedal fan frames are fixed on the upper surface of the pedal fan base, three pedal fixing seats are fixed on the upper surface of the pedal fan base, and the pedal fixing seats are fixed on the pedal fan base. The two pedal fixing seats are mounted below the pedal fan frame respectively, and the design solves the problems that a driven gear of a pedal fan of an original device only has one size and cannot be adjusted according to the strength of different persons during use, and if the torque needed by the needed driven gear is larger than the strength of a user, the driven gear cannot be adjusted according to the strength of the user. In order to solve the problem that the working efficiency of the fan is greatly reduced due to the fact that the power of a user is large, the speed change mechanism designed by the utility model can adjust the torque required when the driven wheel is started according to the power of the user, so that people with various power can quickly start the fan, and the working efficiency and the applicability of the fan are greatly improved.

Description

Technical Field

[0001] The utility model relates to a pedal fan with an adjustable driven wheel position, belonging to the field of pedal fans. Background Art

[0002] The pedal-operated dual-purpose blower is essential for air-raid shelters and air-raid shelters in the event of a power outage during wartime, when the enemy uses atomic, chemical, or bacterial agents. Its key technical specifications ensure that it can provide gas-filtering ventilation for 400 people under human-powered operation during wartime. Furthermore, considering both peacetime and combat scenarios, the power supply can be used to ventilate air-raid shelters, underground hotels, restaurants, and shopping malls.

[0003] Patent publication number: CN213655175U, mentions a foot-operated fan with an adjustable driven wheel position. The position of the driven wheel on the output shaft can be adjusted to adapt to the driving wheel so that the driving wheel and the driven wheel are in a straight line, and the power transmission efficiency is higher. The driven wheel can be connected to the output shaft or not connected to the output shaft according to needs. However, the driven gear of the foot-operated fan has only one size and cannot be adjusted according to the strength of different people when in use. If the torque required by the driven wheel is greater than the strength of the user, the working efficiency of the fan will be greatly reduced. Now there is an urgent need for a foot-operated fan with an adjustable driven wheel position to solve the above problems. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a foot-operated fan with adjustable driven wheel position to solve the problems raised in the above-mentioned background technology. This utility model designs a speed change mechanism that can adjust the torque required for starting the driven wheel according to the user's strength, thereby ensuring that people of all strengths can start the fan quickly, greatly improving the working efficiency and applicability of the fan.

[0005] In order to achieve the above-mentioned purpose, the utility model is realized through the following technical solutions: a foot-operated fan with adjustable driven wheel position, comprising a foot-operated fan frame, a foot-operated fan base, a foot-operated fixed seat, a speed adjustment mechanism and a foot pedal, two foot-operated fan frames are fixed on the upper surface of the foot-operated fan base, three foot-operated fixed seats are fixed on the upper surface of the foot-operated fan base, two of the foot-operated fixed seats are respectively installed below the foot-operated fan frames, and the other foot-operated fixed seat is installed between the two foot-operated fan frames, each of the foot-operated fan frames has the same relative position to the corresponding foot-operated fixed seat, a foot-operated rotating shaft is installed on the inner surface of the foot-operated fixed seat, foot pedals are installed at both ends of each foot-operated rotating shaft, and a pedal mounted on the same foot-operated rotating shaft. The two pedals are 180° apart with the pedal rotating axis as the axis. A speed adjustment mechanism is provided above the foot fan base. The speed adjustment mechanism includes a transmission rod, an active special-shaped gear, a No. 1 transmission gear, a driven special-shaped gear, an output shaft, a No. 2 transmission gear, a gear fixing groove and an output adjustment seat. An active special-shaped gear is installed on the circumferential surface of each pedal rotating shaft, a transmission rod is provided on the side surface of the active special-shaped gear, a No. 1 transmission gear is fixed at both ends of the transmission rod, an output shaft is installed on the inner surface of the middle pedal fixing seat, a driven special-shaped gear is installed on the circumferential surface of the output shaft, a No. 2 transmission gear is installed on the circumferential surface of the transmission rod, and an output adjustment seat is fixed on the left end surface of the middle pedal fixing seat.

[0006] Furthermore, the pedal rotating shaft passes through the left and right end surfaces of the corresponding two pedal fixing seats respectively, the output shaft passes through the left and right end surfaces of the corresponding pedal fixing seats, and the driven special-shaped gear and the driving special-shaped gear are located on the same side.

[0007] Furthermore, the two No. 1 transmission gears are respectively engaged with the corresponding active special-shaped gears, and the No. 2 transmission gear is engaged with the driven special-shaped gear.

[0008] Furthermore, a speed change tooth is installed on the right end face of the driven special-shaped gear. The speed change tooth is provided with four circles, and each circle is at the same distance from the inner and outer circles. The number of teeth in each circle of the speed change tooth increases successively toward the outside.

[0009] Furthermore, eight gear fixing grooves are provided on the circumferential surface of the transmission rod, and the eight gear fixing grooves are divided into two groups, each group of the gear fixing grooves is 90° apart with the transmission rod as the axis, and each group of the gear fixing grooves is equipped with a gear fixing plate, the gear fixing plate is installed inside a gear fixing groove, and the inside of the gear fixing groove is connected to the transmission rod through a gear fixing bolt, the distance between the gear fixing groove and the adjacent gear fixing groove in each group is the same, and the distance is the same as the distance between each circle of the speed gear, a gear limiting groove is provided on the circumferential surface of the transmission rod, and the No. 2 transmission gear is provided with a limiting block installed inside the gear limiting groove.

[0010] Furthermore, two output adjustment grooves are provided on the circumferential surface of the output shaft, and the output shaft is fixedly connected to the output adjustment seat via output adjustment bolts. The output adjustment seat is composed of a front adjustment seat and a rear adjustment seat, and the two are connected via an annular groove.

[0011] The beneficial effects of the utility model: the utility model is a foot-operated fan with adjustable driven wheel position. Because the utility model adds a transmission rod, an active special-shaped gear, a No. 1 transmission gear, a driven special-shaped gear, a speed change tooth, an output shaft, a No. 2 transmission gear, a gear limiting groove, a gear fixing groove, a gear fixing plate, a gear fixing bolt, an output adjustment seat, an output adjustment bolt, and an output adjustment groove, our design improvements and actual use have shown that the device has a reasonable structure and good practicality. A speed change mechanism is designed to adjust the torque required for starting the driven wheel according to the user's strength, thereby ensuring that people of all strengths can start the fan quickly, greatly improving the working efficiency and applicability of the fan. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Other features, objects and advantages of the present invention will become more apparent from the detailed description of the non-limiting embodiments with reference to the following drawings:

[0013] Figure 1 This is a three-dimensional schematic diagram of the overall structure of a foot-operated fan with adjustable driven wheel position according to the present invention;

[0014] Figure 2 This is a cross-sectional diagram of a speed adjustment mechanism of a foot-operated fan with adjustable driven wheel position according to the present invention;

[0015] Figure 3 This is a three-dimensional schematic diagram of a gear fixing slot of a pedal fan with adjustable driven wheel position according to the present invention;

[0016] Figure 4 This is a three-dimensional schematic diagram of an output adjustment seat of a foot-operated fan with adjustable driven wheel position according to the present invention;

[0017] Figure 5 This is a three-dimensional schematic diagram of the output adjustment slot of a foot-operated fan with adjustable driven wheel position according to the present invention;

[0018] In the figure: 1-pedal fan frame, 2-pedal fan base, 3-pedal fixing seat, 31-pedal rotating shaft, 4-speed adjustment mechanism, 41-transmission rod, 42-driving special-shaped gear, 43-No. 1 transmission gear, 44-driven special-shaped gear, 441-speed gear, 45-output shaft, 46-No. 2 transmission gear, 461-gear limiting groove, 47-gear fixing groove, 471-gear fixing plate, 472-gear fixing bolt, 48-output adjustment seat, 481-output adjustment bolt, 482-output adjustment groove, 5-pedal. DETAILED DESCRIPTION

[0019] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0020] See also Figure 1-Figure 5The utility model provides a technical solution: a foot-operated fan with adjustable driven wheel position, comprising a foot-operated fan frame 1, a foot-operated fan base 2, a foot-operated fixed seat 3, a speed adjustment mechanism 4 and a foot pedal 5. Two foot-operated fan frames 1 are fixed on the upper surface of the foot-operated fan base 2, and three foot-operated fixed seats 3 are fixed on the upper surface of the foot-operated fan base 2. The two foot-operated fixed seats 3 are respectively installed under the foot-operated fan frame 1, and the other foot-operated fixed seat 3 is installed between the two foot-operated fan frames 1. Each foot-operated fan frame 1 has the same relative position as the corresponding foot-operated fixed seat 3. A foot pedal rotating shaft 31 is installed on the inner surface of the foot pedal fixed seat 3. Foot pedals 5 are installed at both ends of each foot pedal rotating shaft 31, and the two foot pedals 5 installed on the same foot pedal rotating shaft 31 are 180° apart with the foot pedal rotating shaft 31 as the axis. A speed adjustment mechanism 4 is provided above the foot pedal fan base 2, and the speed adjustment mechanism 4 includes a transmission rod 41, an active Special-shaped gear 42, No. 1 transmission gear 43, driven special-shaped gear 44, output shaft 45, No. 2 transmission gear 46, gear fixing groove 47 and output adjustment seat 48, an active special-shaped gear 42 is installed on the circumferential surface of each pedal rotating shaft 31, and a transmission rod 41 is provided on the side surface of the active special-shaped gear 42. A No. 1 transmission gear 43 is fixed at both ends of the transmission rod 41. An output shaft 45 is installed on the inner surface of the middle pedal fixing seat 3, and a driven special-shaped gear 44 is installed on the circumferential surface of the output shaft 45. A No. 2 transmission gear 46 is installed on the circumferential surface of the transmission rod 41. An output adjustment seat 48 is fixed on the left end surface of the middle pedal fixing seat 3. This design solves the problem that the driven gear of the original device foot-operated fan has only one size and cannot be adjusted according to the strength of different people during use. If the torque required by the driven wheel is greater than the strength of the user, the working efficiency of the fan will be greatly reduced.

[0021] As a first embodiment of the present invention: the pedal rotating shaft 31 passes through the left and right end surfaces of the corresponding two pedal fixing seats 3 respectively, the output shaft 45 passes through the left and right end surfaces of the corresponding pedal fixing seat 3, the driven special-shaped gear 44 and the active special-shaped gear 42 are located on the same side, the two No. 1 transmission gears 43 are respectively meshed with the corresponding active special-shaped gears 42, the No. 2 transmission gear 46 is meshed with the driven special-shaped gear 44, and the right end surface of the driven special-shaped gear 44 is installed with a speed change tooth 441, the speed change tooth 441 is provided with four circles, and each circle is at the same distance from the inner and outer circles, and the number of teeth of the speed change tooth 441 increases successively in each circle outward. By adding the speed change tooth 441, the transmission ratio of the active special-shaped wheel and the driven special-shaped wheel can be flexibly adjusted, and eight gear fixing grooves 47 are provided on the circumferential surface of the transmission rod 41, and the eight gear fixing grooves 47 are divided into two groups, each group of gear fixing The fixed grooves 47 are 90° apart with the transmission rod 41 as the axis. Each group of gear fixing grooves 47 is equipped with a gear fixing plate 471. The gear fixing plate 471 is installed inside a gear fixing groove 47, and the inside of the gear fixing groove 47 is connected to the transmission rod 41 through a gear fixing bolt 472. The distance between the gear fixing grooves 47 and the adjacent gear fixing grooves 47 in each group is the same, and this distance is the same as the distance between each circle of the speed gear 441. A gear limiting groove 461 is provided on the circumferential surface of the transmission rod 41, and a limiting block is provided on the No. 2 transmission gear 46 to be installed inside the gear limiting groove 461. Two output adjustment grooves 482 are provided on the circumferential surface of the output shaft 45. The output shaft 45 is fixedly connected to the output adjustment seat 48 by an output adjusting bolt 481. The output adjustment seat 48 is composed of a front adjustment seat and a rear adjustment seat, and the two are connected by an annular slide groove.

[0022] As a second embodiment of the present invention: when the fan does not need to be started by foot, the output adjusting bolt 481 is fixed in the output adjusting slot 482 on the right side, so that the driven special-shaped gear 44 is away from the second transmission gear 46, resulting in the inability to mesh with each other. At this time, the motor can be used to drive the fan. When the fan needs to be started manually, the output adjusting bolt 481 is fixed in the output adjusting slot 482 on the left side, so that the driven special-shaped gear 44 is close to the second transmission gear 46, and then the driven special-shaped gear 44 and the second transmission gear 46 will mesh with each other. At this time, the staff only needs to rotate the foot pedal 5 through the foot The rotating shaft 31 is stepped on to rotate the active special-shaped gear 42. Since the active special-shaped gear 42 and the No. 1 transmission gear 43 are meshed with each other, the active special-shaped gear 42 will drive the transmission rod 41 to rotate when it rotates. Since the No. 2 transmission gear 46 and the driven special-shaped gear 44 are meshed with each other, the transmission rod 41 will drive the output shaft 45 to rotate, thereby driving the fan to work. When the staff needs to be replaced, the position of the No. 2 transmission gear 46 can be changed by changing the position of the two gear fixing plates 471, so that the No. 2 transmission gear 46 can be meshed with different speed change teeth 441, thereby selecting the appropriate torque for use.

[0023] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended that all changes that fall within the meaning and range of equivalents of the claims are included in the present invention. Any reference signs in the claims should not be construed as limiting the claim to which they relate.

[0024] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A pedal fan with adjustable driven wheel position, comprising a pedal fan frame (1), a pedal fan base (2), a pedal fixing seat (3), a speed adjustment mechanism (4) and a pedal (5), characterized in that: Two foot-operated fan frames (1) are fixed on the upper surface of the foot-operated fan base (2), and three foot-operated fixing seats (3) are fixed on the upper surface of the foot-operated fan base (2). Two of the foot-operated fixing seats (3) are respectively installed below the foot-operated fan frames (1), and another foot-operated fixing seat (3) is installed between the two foot-operated fan frames (1). The relative positions of each foot-operated fan frame (1) and the corresponding foot-operated fixing seat (3) are the same. A foot-operated rotating shaft (31) is installed on the inner surface of the foot-operated fixing seat (3), and pedals (5) are installed at both ends of each foot-operated rotating shaft (31), and two foot pedals (5) installed on the same foot-operated rotating shaft (31) are 180 degrees apart with the foot-operated rotating shaft (31) as the axis. A speed adjustment mechanism (4) is provided above the foot-operated fan base (2); The speed adjustment mechanism (4) comprises a transmission rod (41), an active special-shaped gear (42), a first transmission gear (43), a driven special-shaped gear (44), an output shaft (45), a second transmission gear (46), a gear fixing groove (47) and an output adjustment seat (48). The circumferential surface of each pedal rotating shaft (31) is provided with an active special-shaped gear (42), the side surface of the active special-shaped gear (42) is provided with a transmission rod (41), the two ends of the transmission rod (41) are fixed with the first transmission gear (43), the inner surface of the pedal fixing seat (3) located in the middle is provided with an output shaft (45), the circumferential surface of the output shaft (45) is provided with the driven special-shaped gear (44), the circumferential surface of the transmission rod (41) is provided with the second transmission gear (46), and the left end surface of the pedal fixing seat (3) located in the middle is fixed with the output adjustment seat (48).

2. A foot-operated fan with adjustable driven wheel position according to claim 1, characterized in that: The pedal rotating shaft (31) respectively penetrates the left and right end surfaces of the corresponding two pedal fixing seats (3), the output shaft (45) penetrates the left and right end surfaces of the corresponding pedal fixing seats (3), and the driven special-shaped gear (44) and the driving special-shaped gear (42) are located on the same side.

3. The foot-operated fan with adjustable driven wheel position according to claim 1, characterized in that: The two first transmission gears (43) are respectively engaged with the corresponding active special-shaped gears (42), and the second transmission gear (46) is engaged with the driven special-shaped gear (44).

4. The foot-operated fan with adjustable driven wheel position according to claim 1, characterized in that: The right end surface of the driven special-shaped gear (44) is provided with a speed change tooth (441), and the speed change tooth (441) is provided with four circles, and each circle is at the same distance from the inner and outer circles, and the number of teeth of each circle of the speed change tooth (441) increases sequentially outward.

5. The foot-operated fan with adjustable driven wheel position according to claim 1, characterized in that: Eight gear fixing grooves (47) are provided on the circumferential surface of the transmission rod (41), and the eight gear fixing grooves (47) are divided into two groups. The gear fixing grooves (47) of each group are 90 degrees apart with the transmission rod (41) as the axis. Each group of gear fixing grooves (47) is equipped with a gear fixing plate (471). The gear fixing plate (471) is installed inside a gear fixing groove (47), and the inside of the gear fixing groove (47) is connected to the transmission rod (41) through a gear fixing bolt (472). The distance between the gear fixing grooves (47) and the adjacent gear fixing grooves (47) in each group is the same, and the distance is the same as the distance between each circle of the speed change gear (441). A gear limiting groove (461) is provided on the circumferential surface of the transmission rod (41), and a limiting block is provided on the second transmission gear (46) and installed inside the gear limiting groove (461).

6. The foot-operated fan with adjustable driven wheel position according to claim 1, characterized in that: Two output adjustment grooves (482) are provided on the circumferential surface of the output shaft (45). The output shaft (45) is fixedly connected to the output adjustment seat (48) via an output adjustment bolt (481). The output adjustment seat (48) is composed of a front adjustment seat and a rear adjustment seat, and the two are connected via an annular sliding groove.

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