A test tool and motor fatigue testing device

Abstract

The utility model relates to the technical field of needleless injector especially, a kind of test tool and motor fatigue testing device, including, pedestal support, transmission cam is rotatably arranged on it, the transmission cam has the input end compatible with motor output shaft, and the output end of helical end face;Rear support, sheath is arranged on it, the sheath inside is provided with elastic member, the top block that is connected with the end of elastic member is slidably arranged in the sheath, and it is matched with the output end of helical end face of the transmission cam;And, connecting piece, the both ends of the connecting piece are respectively fixedly connected with the pedestal support and the rear support.This kind of test tool and motor fatigue testing device, by installing test motor in pedestal support and transmission cam docking to simulate the working condition of motor, then by inductor to induct test motor working circle number, it is counted by program mainboard record to obtain accurate test data.

Description

Technical Field

[0001] This utility model relates to the technical field of needleless injectors, and in particular to a testing fixture and a motor fatigue testing device. Background Technology

[0002] Needle-free injectors are powered by a drive motor. To understand the lifespan of the drive motor, it is necessary to operate the drive motor for an extended period of time to record its fatigue level. Currently, the fatigue data obtained from no-load testing is not accurate enough. To more accurately reflect the true fatigue level of the drive motor, it is necessary to apply loads to simulate the actual working state of the drive motor and conduct long-term testing to obtain accurate experimental results. Utility Model Content

[0003] In view of the aforementioned problems with the accuracy of fatigue test data for existing needleless injector motors, this utility model is proposed.

[0004] Therefore, one of the objectives of this invention is to provide a testing fixture to simulate the working state of a motor.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a testing fixture, comprising: a base support on which a transmission cam is rotatably mounted, the transmission cam having an input end adapted to the output shaft of a motor and an output end with a helical end face; a rear support on which a protective sleeve is mounted, the protective sleeve having an elastic element inside, and a top block slidably mounted in the protective sleeve that is connected to the end of the elastic element and cooperates with the output end of the helical end face of the transmission cam; and a connecting member, the two ends of which are fixedly connected to the base support and the rear support respectively, for maintaining the fixed positions of the base support and the rear support.

[0006] As a preferred embodiment of the testing fixture described in this utility model, the transmission cam end includes an initial plane, a climbing surface disposed at the end of the initial plane, and a terminal plane disposed at the end of the climbing surface; the climbing surface is spiral-shaped and rotates no more than one revolution; the initial plane and the terminal plane are parallel, and their ends coincide or intersect.

[0007] As a preferred embodiment of the testing fixture described in this utility model, the top block is provided with a pull rod at one end, and one end of the pull rod extends through the sheath and the rear support; A stop block and a locking block are provided between the top block and the elastic element, and the locking block is fitted onto the pull rod; the locking block cooperates with the elastic element.

[0008] As a preferred embodiment of the testing fixture described in this utility model, the connecting member is made of a flat plate, the base bracket and the rear bracket are fixed to the connecting member by bolts, and the connecting member is also provided with an anti-retraction component that cooperates with the rear bracket; the anti-retraction component includes a stop block provided on the connecting member, and an adjusting bolt threaded on the stop block and abutting against the rear bracket.

[0009] As a preferred embodiment of the testing fixture described in this utility model, a fixed block is installed on the base support, and the transmission cam is rotatably installed on the fixed block; a sliding sleeve is provided on the fixed block; a long rod is provided on the top block, and the long rod is slidably inserted into the sliding sleeve.

[0010] As a preferred embodiment of the testing fixture of this utility model, the connecting member is provided with a slider; the long rod passes through the slider and the sliding sleeve in sequence; the top block is provided with a bumper, the bumper cooperates with the slider, and when the bumper abuts against the slider, there is a gap between the top block and the transmission cam.

[0011] In a preferred embodiment of the testing fixture described in this utility model, a rotor is rotatably connected to the top block, and the rotor is in rolling cooperation with the transmission cam.

[0012] The beneficial effects of this testing fixture are as follows: through the transmission cam, elastic element and top block, when the transmission cam rotates, the top block slides on the output end surface of the spiral end face of the transmission cam, which can compress the elastic element. After the top block separates from the transmission cam, the elastic element drives the top block to pop out and contact the transmission cam again. It still slides on the output end surface of the spiral end face of the transmission cam to compress the elastic element again, realizing the reciprocating movement of the top block.

[0013] Another objective of this invention is to provide a motor fatigue testing device for performing a work count on a simulated motor operation.

[0014] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a motor fatigue testing device, including a testing fixture, and further including a feedback component, which includes a power supply component, a program motherboard electrically connected to the power supply component, an interactive display screen and control buttons electrically connected to the program motherboard, and a sensor disposed on the base support and electrically connected to the program motherboard; the sensor cooperates with the transmission cam.

[0015] As a preferred embodiment of the motor fatigue testing device of this utility model, the feedback component further includes a hub control box, the power supply component, the program motherboard and the interactive display screen are located in the hub control box, and the top of the hub control box is provided with a through hole for the interactive display screen and control buttons to be exposed.

[0016] In a preferred embodiment of the motor fatigue testing device of this utility model, an optical plate is further included, and the connector and the feedback component are fixedly mounted on the optical plate.

[0017] The beneficial effects of this motor fatigue testing device are as follows: by mounting the test motor on the base bracket and connecting it with the transmission cam to simulate the working state of the motor, the sensor then senses the number of revolutions of the test motor, which is recorded and counted by the program motherboard to obtain accurate test data. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 An overall schematic diagram of Embodiment 1 is shown; Figure 2 A schematic diagram of the transmission cam in Embodiment 1 is shown; Figure 3 A schematic diagram of the anti-retraction component of Embodiment 2 is shown; Figure 4 A schematic diagram of the sliding sleeve in Embodiment 3 is shown; Figure 5 A schematic diagram of the top block of Embodiment 3 is shown; Figure 6 An overall schematic diagram of Embodiment 4 is shown; Figure 7 A schematic diagram of the sensor in Embodiment 4 is shown. Detailed Implementation

[0020] To enable those skilled in the art to better understand this utility model, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0021] The terminology used in this invention refers to those general terms currently widely used in the art in consideration of the functionality of this invention; however, these terms may vary according to the intent, precedent, or new technology of those skilled in the art. Furthermore, specific terms may be chosen by the applicant, and in such cases, their detailed meanings will be described in the detailed description of this invention. Therefore, the terminology used in this specification should not be construed as simple names, but rather based on the meaning of the terms and the overall description of this invention.

[0022] Example 1, referring to Figure 1 and Figure 2The first embodiment of this utility model provides a testing fixture, including a base support 100, a rear support 200, and a connector 300.

[0023] A base support 100 is rotatably mounted on which a transmission cam 101 is rotatably mounted. The transmission cam 101 has an input end adapted to the output shaft of the motor and an output end with a helical end face.

[0024] When testing the motor, simply install the motor on the base bracket 100 and fix its output end to the input end of the transmission cam 101. The two can be fixed with bolts or with a slot to prevent relative misalignment, ensuring that the transmission cam 101 can be driven to rotate.

[0025] The transmission cam 101 has an initial plane 101a at its end, a climbing surface 101b at the end of the initial plane 101a, and a terminal plane 101c at the end of the climbing surface 101b. The climbing surface 101b is spiral and rotates no more than one revolution. The initial plane 101a and the terminal plane 101c are parallel and their ends coincide or intersect.

[0026] The rear support 200 has a protective sleeve 201. An elastic element 202 is provided inside the protective sleeve 201. A top block 203 is slidably provided in the protective sleeve 201, which is connected to the end of the elastic element 202 and cooperates with the output end of the transmission cam 101 in a spiral shape. The elastic element 202 can be made of spring or metal sheet. The top block 203 is inserted into the protective sleeve 201, and the sliding freedom of the top block 203 is restricted by the protective sleeve 201.

[0027] The connector 300 has its two ends fixedly connected to the base bracket 100 and the rear bracket 200, respectively. The connector 300 is made of a flat plate. The base bracket 100 and the rear bracket 200 are fixed to the connector 300 by bolts. Alternatively, the connector 300 can be made of a connecting rod. The two ends of the connector 300 are fixedly connected to the base bracket 100 and the rear bracket 200 to keep the positions of the base bracket 100 and the rear bracket 200 fixed.

[0028] As the test motor rotates, the transmission cam 101 causes the top block 203 to sequentially contact the initial plane 101a, the climbing surface 101b, and the terminal plane 101c. When the top block 203 moves along the climbing surface 101b to the terminal plane 101c, it compresses the elastic element 202 to store force, simulating the force storage process of a syringe. When the top block 203 disengages from the terminal plane 101c, under the elastic force of the elastic element 202, it moves to contact the initial plane 101a, simulating the injection process of the syringe. With one rotation of the test motor, one injection can be simulated, and cyclic injection can simulate multiple injections.

[0029] Example 2, refer to Figure 4 This is the second embodiment of the present invention. The difference between this embodiment and the first embodiment is that: a pull rod 204 is provided at the end of the top block 203, and one end of the pull rod 204 extends through the sheath 201 and the rear bracket 200; a stop block 205 and a locking block 206 are provided between the top block 203 and the elastic member 202, which are sleeved on the pull rod 204; the locking block 206 cooperates with the elastic member 202.

[0030] The locking block 206 can press the elastic element 202 to a predetermined position and adjust the initial elastic force of the elastic element 202. At the same time, the stop block 205 can protect the locking block 206 from damage in the event of a collision. The stop block 205 can replace and fill the gap between the locking block 206 and the top block 203.

[0031] Furthermore, the connector 300 is made of a flat plate. The base bracket 100 and the rear bracket 200 are fixed to the connector 300 by bolts. The flat plate is located at the bottom of the base bracket 100 and the rear bracket 200. The connector 300 is also provided with an anti-retraction component 400 that cooperates with the rear bracket 200. The anti-retraction component 400 includes a stop block 401 provided on the connector 300 and an adjusting bolt 402 threaded on the stop block 401 and abutting against the rear bracket 200. The stop block 401 is L-shaped and is fixed to the connector 300 by bolts. The adjusting bolt 402 on the stop block 401 can abut against the rear bracket 200 to limit the loosening and displacement of the rear bracket 200 caused by impact. At the same time, it can also finely adjust the pressure variable of the elastic component 202.

[0032] The remaining structure is the same as that in Example 1.

[0033] Example 3, referring to Figure 4 and Figure 5 This is the third embodiment of the present invention. The difference between this embodiment and the third embodiment is that: a fixed block 102 is installed on the base support 100, and a transmission cam 101 is rotatably installed on the fixed block 102; a sliding sleeve 102a is provided on the fixed block 102; a long rod 203a is provided on the top block 203, and the long rod 203a is slidably inserted into the sliding sleeve 102a.

[0034] The test motor is fixed on the fixed block 102, and its output end is fixed to the transmission cam 101. The test motor drives the transmission cam 101 to rotate.

[0035] The fixing block 102 is fixed to the base bracket 100, and the fixing block 102 is provided with a sliding sleeve 102a; the top block 203 is provided with a long rod 203a, which is slidably inserted into the sliding sleeve 102a; the top of the base bracket is U-shaped, and the fixing block 102 is inserted into the base bracket 100 and fixed to it by bolts.

[0036] Furthermore, the connector 300 is provided with a slider 301; the long rod 203a passes through the slider 301 and the sliding sleeve 102a in sequence; the top block 203 is provided with a bumper 203b, which cooperates with the slider 301. When the bumper 203b abuts against the slider 301, there is a gap between the top block 203 and the transmission cam 101. That is, when the top block 203 disengages from the terminal plane 101c, under the elastic force of the elastic member 202, the top block 203 moves to contact the initial plane 101a to simulate the injection process of the syringe. At this time, the top block 203 will not collide with the initial plane 101a to protect the transmission cam 101. The slider 301 is L-shaped and is fixed to the connector 300 by bolts.

[0037] A rotor 203c is rotatably connected to the top block 203. The rotor 203c rolls with the transmission cam 101 to reduce the friction between the transmission cam 101 and the top block 203.

[0038] Example 4, refer to Figure 6 and Figure 7 This is the fourth embodiment of the present invention. This embodiment provides a motor fatigue testing device. The device includes a testing fixture and a feedback component 500, which includes a power supply component 501, a program motherboard 502 electrically connected to the power supply component 501, an interactive display screen 503 and control buttons 504 electrically connected to the program motherboard 502, and a sensor 505 disposed on the base bracket 100 and electrically connected to the program motherboard 502. The sensor 505 cooperates with a transmission cam 101. One rotation of the transmission cam 101 is one count.

[0039] The entire device is powered by power supply component 501, and control button 504 has three buttons: function (original button position), select (original button position), and confirm (original front proximity switch position). The specific functions are as follows: S1: Counting via proximity switch sensing; (total count, single count; power outage data can be retained for more than 10 days; single count data can be saved for 10 batches; all counts can be manually reset). S2: Can be set to count tests by time; adjustable duration: days, hours, minutes; (00; 00; 00); S3: Can be set to test by the number of tests; adjustable number of tests, millions, (0000000); S4: Error report, automatically stops movement; S5: The transmission cam 101 should pause briefly when it reaches its highest point; S6: The transmission cam 101 can be adjusted to accurately stop at its highest point according to different motor speeds (seconds, milliseconds +-) (adjusting the motor stop position based on proximity switch sensing). S7: Tests can be paused manually.

[0040] The test motor is controlled and counted via the program motherboard 502, and the data can be read intuitively through the interactive display.

[0041] The feedback component 500 also includes a hub control box 506, in which a power supply component 501, a program motherboard 502, and an interactive display screen 503 are located. The top of the hub control box 506 has a perforation for the interactive display screen 503 and control buttons 504 to be exposed.

[0042] Furthermore, it also includes an optical plate 600, a connector 300, and a feedback component 500 fixedly mounted on the optical plate 600.

[0043] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A testing fixture, characterized in that: include, A base support (100) is rotatably mounted on which a transmission cam (101) is rotatably mounted. The transmission cam (101) has an input end adapted to the output shaft of the motor and an output end with a helical end face. A rear support (200) is provided with a protective sleeve (201), and an elastic element (202) is provided inside the protective sleeve (201). A top block (203) is slidably provided in the protective sleeve (201) and is connected to the end of the elastic element (202) and cooperates with the output end of the helical end face of the transmission cam (101); and, A connector (300) is fixedly connected at both ends to the base bracket (100) and the rear bracket (200) respectively, for keeping the positions of the base bracket (100) and the rear bracket (200) fixed.

2. The testing fixture according to claim 1, characterized in that: The transmission cam (101) end includes an initial plane (101a), a climbing surface (101b) disposed at the end of the initial plane (101a), and a terminal plane (101c) disposed at the end of the climbing surface (101b). The climbing surface (101b) is spiral-shaped and rotates no more than one revolution. The initial plane (101a) and the terminal plane (101c) are parallel, and their ends coincide or intersect.

3. The testing fixture according to claim 1 or 2, characterized in that: The top block (203) is provided with a pull rod (204) at one end, and one end of the pull rod (204) passes through the sheath (201) and the rear bracket (200). A stop block (205) and a locking block (206) are provided between the top block (203) and the elastic element (202) and are sleeved on the pull rod (204); the locking block (206) cooperates with the elastic element (202).

4. The testing fixture according to claim 3, characterized in that: The connector (300) is made of a flat plate. The base bracket (100) and the rear bracket (200) are fixed to the connector (300) by bolts. The connector (300) is also provided with an anti-reverse component (400) that cooperates with the rear bracket (200). The anti-reverse component (400) includes a stop (401) disposed on the connector (300) and an adjusting bolt (402) threaded onto the stop (401) and abutting against the rear bracket (200).

5. The testing fixture according to claim 4, characterized in that: A fixing block (102) is mounted on the base support (100), and the transmission cam (101) is rotatably mounted on the fixing block (102); The fixing block (102) is provided with a sliding sleeve (102a); The top block (203) is provided with a long rod (203a), which is slidably inserted into the sliding sleeve (102a).

6. The testing fixture according to claim 5, characterized in that: The connector (300) is provided with a slider (301); the long rod (203a) passes through the slider (301) and the sleeve (102a) in sequence. The top block (203) is provided with a bumper (203b), which cooperates with the slider (301). When the bumper (203b) abuts against the slider (301), there is a gap between the top block (203) and the transmission cam (101).

7. The test fixture according to any one of claims 4-6, characterized in that: A rotor (203c) is rotatably connected to the top block (203), and the rotor (203c) is in rolling engagement with the transmission cam (101).

8. A motor fatigue testing device, characterized in that: Including the test fixture as described in claim 1, it also includes, Feedback component (500) includes a power supply (501), a program motherboard (502) electrically connected to the power supply (501), an interactive display screen (503) and control buttons (504) electrically connected to the program motherboard (502), and a sensor (505) disposed on the base bracket (100) and electrically connected to the program motherboard (502). The sensor (505) is coupled with the transmission cam (101).

9. The motor fatigue testing device according to claim 8, characterized in that: The feedback component (500) also includes a hub control box (506), in which the power supply component (501), the program motherboard (502) and the interactive display screen (503) are located. The top of the hub control box (506) is provided with a perforation for the interactive display screen (503) and the control button (504) to be exposed.

10. The motor fatigue testing device according to claim 8 or 9, characterized in that: It also includes an optical plate (600), on which the connector (300) and the feedback component (500) are fixedly mounted.

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