Failure test fixture for single rotor of fan

Abstract

The utility model relates to a failure test fixture for a single rotor of a fan, and belongs to the field of server hardware testing. According to the technical scheme, the failure testing jig for the single rotor of the fan comprises a jig body, the jig body is in a rod shape, a plurality of tenons are arranged on the side face of the jig body in the length direction, and a connecting structure capable of being connected with a fan shell is arranged at one end of the jig body. The beneficial effects of the utility model are that when the tool is used, one end of the external part of the fan module goes deep into the fan module from the ventilation window of the fan module, the tool is connected to the fan housing through the connection structure, and at the moment, the tenon hooks the fan blades of the fan to make the fan blades stop rotating, so that the condition that the fan stops rotating can be simulated; the fan outer frame does not need to be disassembled and assembled repeatedly, operation is more convenient, and structural loss of the fan module is avoided.

Description

Technical Field

[0001] The utility model relates to the field of server hardware testing, in particular to a fan single rotor failure test fixture. Background Art

[0002] In the design and testing process of high-performance servers, given the possibility that the server may experience severe deterioration in heat dissipation conditions due to room temperature rise and fan damage in actual working environments, in order to evaluate the server's heat dissipation capacity under these extreme conditions, it is necessary to ensure that the server has a certain heat dissipation redundancy when these harsh conditions occur, and to avoid major losses caused by overheating and burning of the main components of the server. In heat dissipation design and testing, extreme heat dissipation testing is one of the important links that must be carried out, and fan single rotor failure testing is an important part of it.

[0003] The server fan unit usually has two opposing motors, each of which drives a fan rotor to rotate. The fan single rotor failure test is to simulate the situation where a single motor of the fan suddenly fails during the operation of the server (if both motors fail, they can be tested independently by other methods). In actual operation, the front rotor of the fan is usually tied with a cable tie to simulate the situation where a single motor of the fan suddenly fails during the operation of the server and cannot rotate normally.

[0004] However, it is troublesome to use cable ties to tie fans, and the fan frame often needs to be disassembled first. On the one hand, it affects work efficiency, and on the other hand, repeated disassembly and assembly of the fan frame may cause damage to some fragile connection structures. Since the fan cable must be fixed on the fan frame, frequent disassembly and assembly also have an adverse effect on the fan cable. In addition, the cable tie is often too long, and it needs to be trimmed after being tied. If it is trimmed too much, it may become loose during testing. If it is trimmed too little, the remaining length will be too long, which will interfere with the installation of the fan back to the bracket together with the cable tie outside the fan frame. Summary of the invention

[0005] The utility model provides a fan single rotor failure test fixture that is more convenient to use, aiming at the problem that the method of using cable ties to tie the rotor blades in the current fan single rotor failure test requires repeated disassembly and assembly of the fan frame, which is inconvenient to operate and affects the fan frame and cable structure.

[0006] In order to solve the above problems, the technical solution adopted by the utility model is a single-rotor failure test fixture for a fan, including a fixture body, the fixture body is rod-shaped, and the side of the fixture body is provided with a plurality of tenons along the length direction, and one end of the fixture body is provided with a connection structure that can be connected to the fan housing. When the fixture is in use, one end of the fixture is inserted into the fan module from the ventilation window of the fan module outside the fan module, and the fixture is connected to the fan housing through the connection structure. At this time, the tenon hooks the fan blades to stop the fan, which can simulate the situation where the fan stops, without repeatedly disassembling the fan frame, making the operation more convenient and avoiding the structural loss of the fan module.

[0007] Preferably, the plurality of tenons are evenly arranged at equal intervals in the length direction of the fixture body, and the fixture body is also provided with a plurality of insertion holes along the length direction, the spacing between adjacent insertion holes is the same as the spacing between adjacent tenons, and the diameter of the insertion hole is adapted to the outer diameter of the tenon. When the depth of the fan is large, the tenons and the insertion holes can be plugged together to combine multiple fixtures to extend the overall length to reach the position of the fan.

[0008] Preferably, the length of the fixture body is no more than 24 mm, and the total length of the fixture body and the connection structure is no more than 30 mm. Suitable for commonly used 80mm×80mm×56mm dual-rotor fans, a single fixture can clamp one of the rotors.

[0009] Preferably, the diameter of the jack and the outer diameter of the tenon are interference fit, so that the tenon and the jack are not easy to get loose after being plugged in, and the overall structure is more stable.

[0010] Preferably, a non-return head is provided at one end of the tenon away from the fixture body, and the outer diameter of the non-return head is larger than the outer diameter of the tenon. After the tenon and the socket are plugged in, the non-return head can prevent the two from loosening and separating, and the overall structure is more stable.

[0011] Preferably, the end surface of the check head away from the tenon is an arc surface, so as to facilitate the insertion of the check head into the socket.

[0012] Preferably, the connection structure is a hook. With the hook structure, it can be directly hung on the grille of the fan housing, which is easy to install and use, and the end of the fixture that goes deep into the fan module has greater mobility and can be naturally clamped with the fan blades.

[0013] Preferably, the opening of the hook is also provided with anti-dropping teeth to prevent the hook from falling off.

[0014] Preferably, the jig body is provided with scale lines along the length direction. When the jig is assembled, the jig can be assembled into a specific length in advance according to the size of the fan module.

[0015] Preferably, the jig body is made of brittle plastic material, and the side of the jig body is also provided with a plurality of notches along the length direction, and the spacing between adjacent notches is the same as the spacing between adjacent tenons. The jig body can be broken at the notch position, which is suitable for fans with smaller depth, or the overall size can be reduced after the jig is assembled, so that the assembled jig can be reused for small-sized fans.

[0016] It can be seen from the above technical scheme that the advantages of the utility model are as follows: the utility model provides a fan single rotor failure test fixture, which is inserted into the fan to jam one rotor of the fan and stop it from rotating. One end of the fixture is hung on the fan casing, so there is no need to remove the fan casing during the fan single rotor failure test, thus avoiding structural losses such as broken casing latches and stripped connecting screws caused by repeated disassembly and assembly, simplifying the operation steps and improving the test efficiency; the fixture has a reasonable size design and is easy to use, and multiple fixtures can be connected and used in combination. With the scale on it, it can be suitable for fan modules of various sizes. At the same time, the fixture is made of brittle plastic and is provided with notches, so the fixture can be broken as needed to obtain a suitable size, which is convenient for repeated use of the fixture and reduces costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solution of the utility model, the drawings required for use in the description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 The structure of the specific implementation method of the utility model is shown in FIG. Figure 1 .

[0019] Figure 2 The structure of the specific implementation method of the utility model is shown in FIG. Figure 2 .

[0020] Figure 3 It is a schematic diagram of the combined use of a specific implementation method of the utility model.

[0021] Description of main reference numerals

[0022] 1. Fixture body, 2. Tenon, 3. Socket, 4. Hook, 4-1. Anti-slip teeth, 5. Scale line. DETAILED DESCRIPTION

[0023] In order to make the purpose, features and advantages of the utility model more obvious and easy to understand, the technical scheme of the utility model will be clearly and completely described below in combination with the drawings in the specific embodiment. Obviously, the embodiments described below are only part of the embodiments of the utility model, not all of them. Based on the embodiments in this patent, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this patent.

[0024] like Figure 1 , 2 As shown, a fan single rotor failure test fixture includes a fixture body 1, the fixture body 1 is a narrow and long rod, and the cross section can be rectangular or circular. One end of the fixture body is provided with a connection structure that can be connected to the fan housing. In this embodiment, Figure 2 As shown, the connection structure is a hook 4, one end of which is fixedly connected to the end of the fixture body 1, and the central angle of the hook 4 is greater than 270°. At the same time, at this end of the fixture body, the opening of the hook 4 is provided with a check tooth, and the check tooth faces the inside of the hook 4;

[0025] The side of the jig body 1 is provided with a plurality of tenons 2 along the length direction, and the plurality of tenons 2 are arranged at equal intervals over the entire length of the jig body, the length direction of the tenons 2 is perpendicular to the length direction of the jig body 1, and the axes of the plurality of tenons 2 are located in the same plane, and a plurality of insertion holes 3 are provided on the jig body, and the spacing between adjacent insertion holes 3 is the same as the spacing between adjacent tenons 2. When in use, the tenons 2 can be inserted into the insertion holes of another jig, thereby extending the overall length. Based on this, the outer diameter of the tenon 2 and the inner diameter of the insertion hole 3 preferably adopt an interference fit size relationship, so that the two are firmly connected after being plugged in and will not loosen during use; or, as Figure 1 As shown, a check head structure is provided on the end of the tenon 2 away from the fixture body 1, for example, a cylindrical check head is used, the outer diameter of which is larger than the outer diameter of the tenon 2 (the size difference should not be too large to ensure that the check head can pass through the insertion hole with a slight deformation, Figure 1 To show the structure, the dimensions are not accurate (the ratio is not shown). At the same time, to facilitate the insertion of the check head into the socket, the end surface of the check head away from the tenon 2 is set to be an arc surface.

[0026] Furthermore, the length of the jig body is not greater than 24 mm; the total length of the jig body and the hook 4 in the length direction of the jig body is not greater than 30 mm. Thus, for a commonly used 80 mm × 80 mm × 56 mm dual-rotor fan, a single jig can clamp the front rotor of the fan, thereby performing a single rotor failure test.

[0027] The method of using the utility model is as follows: when performing a single rotor failure test on a fan, the end of the fixture without a hook is inserted into the interior of the fan module through the ventilation window on the fan module, and the hook is hung on the grille in the ventilation window, and the tenon on the part that penetrates into the interior of the fan module hangs the fan blade, and the fan blade is stuck between two adjacent tenons or at the connection turning position between the tenon and the fixture body, so that the fan stops rotating, and then the test can be carried out.

[0028] For fan modules with a large depth, a single fixture cannot reach the fan blades. In this case, the fan module can be designed with the required dimensions, such as Figure 3 As shown, the tenon of one jig is inserted into the socket of another jig, thereby connecting and combining multiple jigs, thereby extending the overall length, and then the above method can be used for testing.

[0029] For the use of multiple jigs in combination and connection, in this embodiment, scale lines 5 are also provided on the jig body 1 along the length direction to intuitively and accurately control the total length of the jigs after connection.

[0030] At the same time, the jig body 1 can also be made of a brittle plastic material, such as polystyrene, and a plurality of notches can be set on the side of the jig body 1 along the length direction, and the spacing between adjacent notches is the same as the spacing between adjacent tenons 2. In this way, for the jig as a whole that is longer after connection, it can be directly broken at a specific position if it is inconvenient to disassemble, and then the long jig can be used again for fans with smaller depth dimensions to prevent the excessively long jig from jamming two fans at the same time.

[0031] It can be seen from the above technical scheme that the beneficial effect of the utility model is that the utility model provides a fan single rotor failure test fixture. The fixture is deeply inserted into the fan to jam one rotor of the fan and stop it from rotating. One end of the fixture is hung on the fan casing, so there is no need to remove the fan casing during the fan single rotor failure test, thereby avoiding structural losses such as broken casing latches and stripped connecting screws caused by repeated disassembly and assembly, simplifying the operation steps and improving the test efficiency. The fixture has a reasonable size design and is easy to use. Multiple fixtures can be connected and used in combination. With the scale on it, it can be suitable for fan modules of various sizes. At the same time, the fixture is made of brittle plastic and is provided with notches. The fixture can be broken as needed to obtain a suitable size, which is convenient for repeated use of the fixture and reduces costs.

[0032] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A fan single rotor failure test fixture, comprising a fixture body (1), characterized in that: The jig body (1) is rod-shaped, a plurality of tenons (2) are provided on the side surface of the jig body (1) along the length direction, and a connection structure capable of being connected to a fan casing is provided at one end of the jig body (1).

2. The fan single rotor failure test fixture according to claim 1, characterized in that: The plurality of tenons (2) are evenly arranged at equal intervals in the length direction of the jig body (1); the jig body is also provided with a plurality of insertion holes (3) along the length direction; the spacing between adjacent insertion holes (3) is the same as the spacing between adjacent tenons (2); and the diameter of the insertion hole (3) is adapted to the outer diameter of the tenon (2).

3. The fan single rotor failure test fixture according to claim 1, characterized in that: The length of the fixture body is no more than 24 mm; the total length of the fixture body and the connecting structure is no more than 30 mm.

4. The fan single rotor failure test fixture according to claim 2, characterized in that: The diameter of the insertion hole (3) and the outer diameter of the tenon (2) are in interference fit.

5. The fan single rotor failure test fixture according to claim 2, characterized in that: A non-return head is provided at one end of the tenon (2) away from the jig body (1), and the outer diameter of the non-return head is greater than the outer diameter of the tenon (2).

6. The fan single rotor failure test fixture according to claim 5, characterized in that: The end surface of the check head away from the tenon (2) is an arc surface.

7. The fan single rotor failure test fixture according to any one of claims 1 to 6, characterized in that: The connection structure is a hook (4).

8. The fan single rotor failure test fixture according to claim 7, characterized in that: Anti-slip teeth (4-1) are also provided at the opening of the hook (4).

9. The fan single rotor failure test fixture according to any one of claims 1-6, characterized in that: The fixture body (1) is provided with scale lines (5) along the length direction.

10. The fan single rotor failure test fixture according to any one of claims 1-6, characterized in that: The jig body (1) is made of brittle plastic material, and a plurality of notches are provided on the side surface of the jig body (1) along the length direction, wherein the spacing between adjacent notches is the same as the spacing between adjacent tenons (2).

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