A fan rotation speed measuring mechanism

Abstract

The utility model provides a kind of fan rotating speed measuring mechanism, comprising: workbench, clamping mechanism, measuring mechanism, workbench top is provided with clamping mechanism, clamping mechanism includes the clamping base of being set in pairs, horizontal sliding device and movable clamping table, horizontal sliding device carries movable clamping table and moves horizontally, workbench top side is provided with measuring mechanism, measuring mechanism includes measuring base, vertical lifting mechanism and movable measuring table, vertical lifting mechanism drives movable measuring table and moves vertically, the top of workbench is provided with multiple sample mounting seat, the fan sample to be detected is placed between two clamping bases, the clamping of fan sample is completed by the movable clamping table of being set in pairs, movable measuring table includes rotating speed sensor, by aligning fan blade, the rotating speed of different model seat fan under different height can be measured.

Description

Technical Field

[0001] This utility model relates to the field of fan testing technology, specifically to a fan speed measuring mechanism. Background Technology

[0002] As people's living standards continue to improve, their demands for vehicles are also increasing. Driving comfort has become a crucial evaluation indicator. Among these, the seat, as the most direct carrier, is particularly important due to its diverse functions. Currently, multi-functional seats are becoming increasingly common, and seat ventilation, as one of its features, is gaining popularity. Therefore, the reliability of seat ventilation fans is paramount. During the design process of automotive seat controllers, relevant tests must be conducted under specified operating conditions to ensure the module's reliability. The test items for different seat ventilation fans are generally similar, including environmental reliability testing, electrical performance testing, and mechanical performance testing. The key indicator for evaluating the quality of a seat ventilation fan is its rotational speed.

[0003] Patent CN220671465U discloses a fan speed measuring device, including: a heat sink, a mounting pipe, a measuring block, and a flow rate sensor. A fan body is located on one side of the heat sink, and one end of the heat sink is fixedly mounted on the fan body. The measuring block is fixedly mounted on one side wall of the mounting pipe, and the flow rate sensor is fixedly mounted on the other side wall of the mounting pipe. A baffle is fixedly mounted on the outer wall of one end of the heat sink, and a top block and a threaded cap are elastically connected to one side wall of the mounting pipe. By installing the mounting pipe with the measuring block and flow rate sensor in the main heat sink pipeline of the cooling system, the flow rate through the motor pipeline can be calculated in real time by measuring the flow rate and a fixed throttling area. However, this device only achieves fan speed measurement in a fixed position and cannot easily and dynamically adjust the fan speed measurement for different models. Furthermore, it can only measure within a single plane, resulting in poor versatility under different testing conditions. Summary of the Invention

[0004] This utility model addresses the problems of inflexible adjustment and poor versatility of existing fan speed measuring mechanisms by providing a seat ventilation fan speed measuring mechanism. This solves the problem of inflexible adjustment of existing fan speed measuring mechanisms, ensuring the standardization and accuracy of testing. At the same time, this measuring mechanism is versatile and compatible with different fan models, which also helps to save costs.

[0005] The technical solution adopted by this utility model to solve the above problems is as follows:

[0006] A fan speed measuring mechanism includes a worktable, a clamping mechanism, and a measuring mechanism. The clamping mechanism is symmetrically arranged on the top of the worktable. The clamping mechanism includes a pair of clamping bases, a horizontal sliding device, and a movable clamping platform. The movable clamping platform can slide horizontally on the horizontal sliding device. The measuring mechanism is arranged on one side of the top of the worktable. The measuring mechanism includes a measuring base, a vertical lifting mechanism, and a movable measuring platform. The movable measuring platform can be vertically lifted on the vertical lifting mechanism.

[0007] Preferably, the movable clamping table is connected to the clamping base via a horizontal sliding device, the horizontal sliding device including a horizontal slide rail and a horizontal slide rail platform, the horizontal slide rail platform being matched with the horizontal slide rail.

[0008] Preferably, the movable clamping table includes a support base, a power arm, a force transmission arm, and a clamping head. The power arm is installed on the outside of the support base, the force transmission arm is installed on the inside of the support base, and the clamping head is installed at one end of the force transmission arm. The movable clamping table is mounted on the horizontal slide rail platform through its internal support base, so that the movable clamping table can slide horizontally along the horizontal slide rail, and the optimal clamping position can be found when measuring different models of fans.

[0009] More preferably, the power arm, the force transmission arm, and the support base are riveted together in pairs to form a force application assembly. The clamping effect is achieved by applying force to the power arm. The force transmission arm has a slot, so that the clamping head can be adjusted along the slot in the force transmission arm to accommodate samples of different widths.

[0010] Preferably, the clamping head on the side away from the fan sample adopts a stud design, and the clamping head is installed in the slot of the force transmission arm by a nut, forming a height adjustment device to accommodate samples of different thicknesses. The clamping head on the side facing the fan sample adopts a rubber head design, which protects the sample shell and prevents damage to the shell when the sample is clamped.

[0011] Preferably, the movable measuring platform is mounted on the screw nut and vertical slide rail platform via its internal support plate, so that the movable measuring platform can slide vertically along the vertical slide rail. At the same time, due to the influence of gravity, the vertical screw assembly can fix the movable measuring platform in a fixed position.

[0012] Preferably, the horizontal moving mechanism is connected to the hinge support via a hinge joint, and the hinge support is connected to the support plate via screws, so that the horizontal moving mechanism can move vertically up and down together with the support plate. The sensor is mounted on the horizontal moving mechanism, thereby enabling rapid and accurate adjustment of the sensor's height.

[0013] Preferably, the horizontal moving mechanism is a planar multi-bar mechanism, including a left rocker, a left connecting rod, a right connecting rod, and a right rocker that are hinged in sequence to form a W-shaped structure. While ensuring the strength of the support, the hinge point of the left connecting rod and the right connecting rod can be quickly adjusted to any position on the horizontal plane. At the same time, a rubber ring is added to the rotation shaft at each hinge point to make the positioning more stable.

[0014] Preferably, the support is installed at the hinge of the left and right connecting rods, and the sensor is a photoelectric speed sensor installed inside the support, so that the sensor can be adjusted to any position on the horizontal plane, thereby achieving the effect of rapid positioning when measuring different types of fans.

[0015] Preferably, the power source device is connected to the lead screw, and the turntable in the power source device can convert the rotational motion of the lead screw into the linear motion of the lead screw nut, thereby adjusting the height of the lead screw nut. The handle in the power source device is used to fix the height of the lead screw nut.

[0016] Preferably, the top of the workbench is provided with a sample mounting base, which is used to support the fan sample.

[0017] More preferably, the sample mounting base is a magnetic support column, which uses three columns to support the sample, and can be quickly removed and moved to any position to accommodate different models of fans.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] The fan speed measuring mechanism described in this utility model, by setting up a worktable, a clamping mechanism, and a measuring mechanism, can realize the functions of quick sample installation, quick clamping, and quick sensor positioning when measuring the speed of different models of fans, thereby improving testing efficiency and accuracy. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the fan speed measuring mechanism of this utility model.

[0021] Figure 2 This is a schematic diagram of the clamping mechanism in the fan speed measuring mechanism of this utility model.

[0022] Figure 3 This is a schematic diagram of the measuring mechanism in the fan speed measuring mechanism of this utility model.

[0023] Figure 4 This is a schematic diagram of the horizontal moving mechanism in the fan speed measuring mechanism of this utility model.

[0024] Figure 5This is a schematic diagram of the vertical lead screw assembly in the fan speed measuring mechanism of this utility model.

[0025] Figure 6 This is a schematic diagram of the movable measuring platform and vertical lead screw assembly in the fan speed measuring mechanism of this utility model.

[0026] In the diagram: 1. Workbench; 2. Clamping mechanism; 3. Measuring mechanism; 21. Clamping base; 22. Horizontal sliding device; 23. Movable clamping table; 31. Measuring base; 32. Vertical lifting mechanism; 33. Movable measuring table; 221. Horizontal slide rail; 222. Horizontal slide rail platform; 231. Support base; 232. Power arm; 233. Force transmission arm; 234. Clamping head; 321. Vertical lead screw; 322. Vertical slide rail; 32 3. Vertical slide rail platform; 331. Support plate; 332. Hinge support; 333. Horizontal moving mechanism; 334. Sensor; 3211. Lead screw; 3212. Lead screw nut; 3213. Power source device; 3214. Turntable; 3215. Handle; 3216. Chassis; 3311. Protrusion; 3331. Left rocker arm; 3332. Left connecting rod; 3333. Right connecting rod; 3334. Right rocker arm; 3335. Support component. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clear and complete, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of this utility model, and are merely used to explain the embodiments of this utility model. They are not intended to limit the embodiments of this utility model. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0028] In the description of this utility model, it should be noted that the terms "center," "middle," "upper," "lower," "left," "right," "inner," "outer," "top," "bottom," "side," "vertical," and "horizontal," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "a," "first," "second," "third," "fourth," "fifth," and "sixth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] For purposes of simplicity and illustration, the principles of the embodiments are described primarily by way of example. In the following description, numerous specific details are set forth to provide a thorough understanding of the embodiments. However, it will be apparent to those skilled in the art that these embodiments may not be limited to these specific details in practice. In some instances, well-known methods and structures have not been described in detail to avoid unnecessarily obscuring these embodiments. Furthermore, all embodiments can be used in combination with each other.

[0031] Please see Figures 1 to 6 This utility model provides a technical solution: a fan speed measuring mechanism, including: a workbench 1, a clamping mechanism 2, and a measuring mechanism 3. The workbench 1 is provided with a clamping mechanism 2 on its top. The clamping mechanism 2 includes a pair of clamping bases 21, a horizontal sliding device 22, and a movable clamping platform 23. The horizontal sliding device 22 carries the movable clamping platform 23 for horizontal movement. The workbench 1 is provided with a measuring mechanism 3 on one side of its top. The measuring mechanism 3 includes a measuring base 31, a vertical lifting mechanism 32, and a movable measuring platform 33. The vertical lifting mechanism 32 drives the movable measuring platform 33 to move vertically. The workbench 1 is provided with multiple sample mounting seats 11 on its top. The fan sample to be measured is placed between two clamping bases 21, and the fan sample is clamped by the pair of movable clamping platforms 23.

[0032] The movable clamping table 23 in the clamping mechanism 2 is connected to the clamping base 21 via a horizontal sliding device 22. The horizontal sliding device 22 includes a horizontal slide rail 221 and a horizontal slide rail platform 222. The horizontal slide rail platform 222 matches the horizontal slide rail 221. The horizontal slide rail 221 is mounted on the clamping base 21 by screws.

[0033] The movable clamping table 23 includes a support base 231, a power arm 232, a force transmission arm 233, and a clamping head 234. The power arm 232 is installed on the outside of the support base 231, i.e. the side away from the fan sample, via a connecting column. The force transmission arm 233 is installed on the inside of the support base 231, i.e. the side facing the fan sample, via a connecting column. The power arm 232 is also connected to the force transmission arm 233 via a connecting column. The support base 231 is installed on the horizontal slide rail platform 222 by screws.

[0034] The clamping head 234 has a rubber head design on the side facing the fan sample and a stud design on the side away from the fan sample. It is installed in the slot of the force transmission arm 233 through a connecting ring and a connecting nut.

[0035] The movable measuring platform 33 in the measuring mechanism 3 is connected to the measuring base 31 through the vertical lifting mechanism 32. The vertical lifting mechanism 32 includes a vertical screw assembly 321, a pair of vertical slide rails 322 and a vertical slide rail platform 323. The vertical slide rail platform 323 is matched with the vertical slide rails 322. The movable measuring platform 33 is connected to the vertical screw assembly 321. The vertical slide rails 322 are installed on the measuring base 31 by screws.

[0036] The movable measuring stage 33 includes a support plate 331, a pair of hinge supports 332, a horizontal moving mechanism 333, and a sensor 334. The hinge supports 332 are mounted on both sides of the support plate 331 by screws. The two sides of the support plate 331 are mounted on the vertical slide rail platform 323 by screws. Specifically, the support plate 331 is connected to the vertical lead screw assembly 321 through the protrusion 3311 on the back of the support plate 331.

[0037] The horizontal moving mechanism 333 is a planar multi-bar mechanism, including a left rocker arm 3331, a left connecting rod 3332, a right connecting rod 3333, and a right rocker arm 3334 connected in sequence. The left rocker arm 3331 is connected to the hinge support 332, the left rocker arm 3331 is connected to the left connecting rod 3332, the left connecting rod 3332 is connected to the right connecting rod 3333, the right connecting rod 3333 is connected to the right rocker arm 3334, and the right rocker arm 3334 is connected to the hinge support 332, all of which are hinged through connecting shafts.

[0038] A support member 3335 is provided at the hinge of the left connecting rod 3332 and the right connecting rod 3333. The support member 3335 is installed at the hinge of the left connecting rod 3332 and the right connecting rod 3333 via a connecting shaft. A slot is opened in the support member 3335, and the sensor 334 is installed in the slot in the support member 3335.

[0039] The vertical lead screw assembly 321 in the vertical lifting mechanism 32 includes a lead screw 3211, a lead screw nut 3212, and a power source device 3213. The lead screw nut 3212 matches the lead screw 3211, and the protrusion 3311 on the back of the support plate 331 is connected to the lead screw nut 3212 by screws. The power source device 3213 is connected to the lead screw 3211 and includes a turntable 3214, a handle 3215, and a base 3216. The base 3216 is mounted on the measuring base 31 by screws. The turntable 3214 and the handle 3215 are both mounted on the base 3216. Specifically, the lead screw 3211... 211 is connected to the turntable 3214 via a coupling. The handle 3215 restricts the rotation of the lead screw 3211 via fasteners mounted on the base 3216. One end of the handle 3215 is connected to the fastener, and the rod of the handle 3215 is threadedly connected to the base. Rotating the handle 3215 causes the fastener to move towards the lead screw 3211, thus clamping the lead screw 3211 and keeping it stationary to prevent rotation. Rotating the handle 3215 causes the fastener to move away from the lead screw 3211, thus releasing the clamping. This allows the turntable 3214 to drive the lead screw 3211 to rotate.

[0040] In other embodiments, the power source device can be a servo motor, hydraulic equipment, pneumatic equipment, or other device that can drive the movement of the lead screw.

[0041] When this fan speed measuring mechanism is working, the fan sample is supported by the sample mounting base 11, the movable clamping platform 23 is positioned by the horizontal sliding device 22, the horizontal and height positions of the clamping head 234 are positioned by the slot in the force transmission arm 233, the clamping head 234 is clamped by the power arm 232, the height position of the movable measuring platform 33 (i.e., the sensor 334) is positioned by the rotation of the turntable 3214 and the tightening of the handle 3215, and the horizontal position of the sensor 334 is positioned by the linkage movement of the horizontal moving mechanism 333. By aligning with the fan blades, the speed of different models of seat fans at different heights can be measured.

[0042] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents. The technical solution of the present invention will now be described in detail with reference to specific embodiments.

Claims

1. A fan speed measuring mechanism, comprising: A workbench (1), a clamping mechanism (2), and a measuring mechanism (3) are characterized in that the workbench (1) is provided with a clamping mechanism (2) on its top, the clamping mechanism (2) including a pair of clamping bases (21), a horizontal sliding device (22), and a movable clamping table (23), the horizontal sliding device (22) carrying the movable clamping table (23) for horizontal movement, and a measuring mechanism (3) being provided on one side of the top of the workbench (1), the measuring mechanism (3) including a measuring base (31), a vertical lifting mechanism (32), and a movable measuring table (33), the vertical lifting mechanism (32) driving the movable measuring table (33) for vertical movement.

2. The fan speed measuring mechanism according to claim 1, characterized in that, The movable clamping table (23) is connected to the clamping base (21) via a horizontal sliding device (22). The horizontal sliding device (22) includes a horizontal slide rail (221) and a horizontal slide rail platform (222), and the horizontal slide rail platform (222) matches the horizontal slide rail (221).

3. The fan speed measuring mechanism according to claim 2, characterized in that, The movable clamping table (23) includes a support base (231), a power arm (232), a force transmission arm (233), and a clamping head (234). The power arm (232) is installed on the outside of the support base (231), the force transmission arm (233) is installed on the inside of the support base (231), and the clamping head (234) is installed at one end of the force transmission arm (233).

4. The fan speed measuring mechanism according to claim 3, characterized in that, The clamping head (234) is connected to the force transmission arm (233) via a stud, and the clamping head (234) and the force transmission arm (233) constitute a height adjustment device.

5. A fan speed measuring mechanism according to claim 1, characterized in that, The mobile measuring platform (33) is connected to the measuring base (31) via a vertical lifting mechanism (32). The vertical lifting mechanism (32) includes a vertical lead screw assembly (321), a pair of vertical slide rails (322), and a vertical slide rail platform (323). The vertical slide rail platform (323) is matched with the vertical slide rails (322), and the mobile measuring platform (33) is connected to the vertical lead screw assembly (321).

6. A fan speed measuring mechanism according to claim 5, characterized in that, The movable measuring platform (33) includes a support plate (331), a pair of hinge supports (332), a horizontal moving mechanism (333), and a sensor (334). The hinge supports (332) are symmetrically installed on both sides of the support plate (331), the horizontal moving mechanism (333) is installed on the hinge supports (332), and the sensor (334) is installed on the horizontal moving mechanism (333).

7. A fan speed measuring mechanism according to claim 6, characterized in that, The horizontal moving mechanism (333) is a planar multi-bar mechanism, including a left rocker (3331), a left connecting rod (3332), a right connecting rod (3333), and a right rocker (3334) connected in sequence. The connection between the left rocker (3331) and the left connecting rod (3332), the left connecting rod (3332) and the right connecting rod (3333), and the right connecting rod (3333) and the right rocker (3334) are all hinged.

8. A fan speed measuring mechanism according to claim 7, characterized in that, A support member (3335) is also installed at the hinge joint between the left connecting rod (3332) and the right connecting rod (3333) in the horizontal moving mechanism (333), and the sensor (334) is installed in the support member (3335).

9. A fan speed measuring mechanism according to claim 8, characterized in that, The vertical lead screw assembly (321) includes a lead screw (3211), a lead screw nut (3212), and a power source device (3213). The lead screw nut (3212) is matched with the lead screw (3211). The power source device (3213) includes a turntable (3214), a handle (3215), and a chassis (3216). The power source device (3213) is connected to the lead screw (3211).

10. A fan speed measuring mechanism according to claim 1, characterized in that, It also includes a sample mounting base (11) disposed on the top of the workbench (1), the sample mounting base (11) being used to support the sample.

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