Gas flow detection jig

Abstract

The utility model discloses an air flow detection jig which comprises a detection support, a jig body placed on the detection support, a detection workpiece placed on the jig body, a telescopic air cylinder installed on the detection support and located above the jig body, and an air inlet mechanism installed at the output end of the telescopic air cylinder and externally connected with an air storage bottle. The workpiece embedding groove is formed in the upper end of the jig body, the circular supporting block and the jig body are integrally formed, and the circular supporting block is located in the middle of the workpiece embedding groove, one end of the jig air channel penetrates through the middle of the circular supporting block, and the other end of the jig air channel penetrates through one side face of the jig body. The jig sealing ring is placed on the circular supporting block; according to the utility model, multiple functions of air flow guiding, sealing control and air flow monitoring are integrated, the air flow of a workpiece can be accurately detected, the air tightness of the workpiece is ensured, and a specific air flow standard is met.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of air flow detection fixture. BACKGROUND

[0002] The driving recorder is the instrument that records the image and sound and other related information during the driving of vehicle. After installing the driving recorder, it can record the video image and sound in the whole process of vehicle driving, which can provide evidence for traffic accidents. Since the driving recorder is placed in the vehicle, the cooling effect of the air conditioner in the vehicle is considered, so most of the driving recorders now ignore the internal heat dissipation performance. However, with the increasing functions of the driving recorder, the power consumption is also increasing, and the heat generation is also increasing. The cooling effect of the air conditioner in the vehicle alone is not enough to dissipate the heat inside the driving recorder. The accumulation of heat inside the driving recorder for a long time will reduce the service life of the instrument, and even cause safety accidents.

[0003] Since the driving recorder has the function of recording sound, the driving recorder shell will be provided with microphone through holes, and the microphone through holes will also be used as part of the heat dissipation holes. However, if the number of microphone through holes is large, the heat dissipation effect can be improved, but noise will be caused. If the number of microphone through holes is small, the air flow will be small and the heat dissipation effect will not be achieved. Therefore, in view of the above problems, an air flow detection device for the microphone through holes provided in the driving recorder shell is needed. SUMMARY

[0004] In view of the deficiencies in the prior art, the purpose of the utility model is to provide an air flow detection fixture.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] An air flow detection fixture, comprising a detection support, a fixture placed on the detection support, a detection workpiece placed on the fixture, a telescopic cylinder installed on the detection support and located above the fixture, and an air inlet mechanism connected with a gas storage cylinder and installed on the output end of the telescopic cylinder. The fixture comprises a fixture body, a workpiece embedding groove opened in the upper end of the fixture body, a circular support block integrally formed with the fixture body and located at the central part of the workpiece embedding groove, a fixture air duct with one end penetrating through the middle part of the circular support block and the other end penetrating through the side surface of the fixture body, an exhaust hose connected with the fixture air duct through an air nozzle, and a fixture sealing ring placed on the circular support block.

[0007] Preferably, a sealing ring embedding groove is opened on the upper surface of the circular support block.

[0008] Preferably, the detection support comprises a bottom plate for placing the fixture, a support column fixed vertically on the side of the bottom plate, and a top plate fixedly installed with the support column for assembling the telescopic cylinder.

[0009] Preferably, the part of the detection workpiece that aligns with the circular support block is provided with a microphone through hole, and the detection workpiece is further provided with a microphone installed at a position corresponding to the microphone through hole.

[0010] Preferably, the air inlet mechanism comprises an upper clamp block with an air inlet channel fixedly installed at the output end of the telescopic air cylinder, an air inlet hose fixedly installed on the upper clamp block and connected to the air inlet channel, a lower clamp block fixedly installed on the upper clamp block by screws, a clamp block sealing ring arranged between the upper clamp block and the lower clamp block, an air supply nozzle assembled on the lower clamp block and connected to the air inlet channel of the upper clamp block, and a rubber sleeve sleeved on the air supply nozzle.

[0011] Further, the rubber sleeve is a corrugated rubber sleeve.

[0012] The utility model discloses the beneficial effect that:

[0013] 1. High-precision air flow detection: through the good sealing between the jig sealing ring and the detection workpiece, air leakage is avoided, thereby ensuring the accuracy of air flow detection, the sealing design reduces the interference of the external environment on the detection result, ensures the reliability of the detection data, and through the exhaust hose connected with the flow meter, the discharged air flow can be monitored in real time, and whether the ventilation amount of the detection workpiece meets the standard is judged through the accurate air flow value.

[0014] 2. Flexibility and adjustability: the use of the telescopic air cylinder enables the air inlet amount to be adjusted according to actual needs, providing strong flexibility, the input of air flow can be accurately adjusted by controlling the telescopic action of the telescopic air cylinder, adapting to the needs of different workpieces or different test conditions, and the structural composition of the air inlet mechanism enables the air inlet process to be accurately performed, different types of workpieces can be adapted through simple adjustment, and the versatility of the jig is enhanced.

[0015] 3. Enhanced sealing performance: the sealing ring embedding groove designed in the jig and the contact sealing ring of the detection workpiece ensure that the air flow passes through the predetermined channel and does not affect the detection result due to air leakage, air leakage is avoided, stable and reliable sealing performance is provided, the use of the corrugated rubber sleeve enables the contact part with the detection workpiece to have certain elasticity and adaptability, the sealing performance is enhanced, it is ensured that the air flow of each detection can pass through the correct path, and the sealing performance and the air flow guiding performance are further improved.

[0016] 4. Efficient air flow guiding and monitoring: the design of the jig air channel can effectively guide the air flow, ensure that the gas is not disturbed after entering and passing through the microphone through hole, and finally discharged through the air channel, avoid the deviation of the air flow and the inaccuracy of the detection data; through the design that the microphone is connected with the microphone through hole, the air flow passing through the microphone through hole can be accurately detected, and combined with the flow meter, the air flow can be monitored in real time, and the efficiency and accuracy of the detection process are ensured. Attached Figure Description

[0017] Figure 1 This is a structural diagram of a gas flow detection fixture according to the present invention;

[0018] Figure 2 for Figure 1 Exploded view;

[0019] Figure 3 for Figure 1 Cross-sectional view. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand the present invention and implement it. However, the embodiments are not intended to limit the present invention. Example

[0021] like Figures 1-3 As shown, a gas flow detection fixture includes a detection bracket 1, a fixture 2 placed on the detection bracket 1, a detection workpiece 3 placed on the fixture 2, a telescopic cylinder 4 mounted on the detection bracket 1 and located above the fixture 2, and an air intake mechanism 5 mounted on the output end of the telescopic cylinder 4 and connected to an external gas storage cylinder.

[0022] The testing bracket 1 includes a base plate 11 for placing the fixture 2, a support column 12 vertically fixed to the side of the base plate 11, and a top plate 13 fixedly installed with the support column 12 for assembling the telescopic cylinder 4.

[0023] The fixture 2 includes a fixture body 21, a workpiece mounting groove 22 formed on the upper end of the fixture body 21, a circular support block 23 integrally formed with the fixture body 22 and located in the center of the workpiece mounting groove 21, a fixture air passage 24 with one end penetrating the middle of the circular support block 23 and the other end penetrating one side of the fixture body 21, an exhaust hose 25 connected to the fixture air passage 24 through an air nozzle, and a fixture sealing ring 26 placed on the circular support block 23.

[0024] The upper surface of the circular support block 23 is provided with a sealing ring mounting groove 231, which can be used to mount the fixture sealing ring 26, so that the workpiece 3 being tested can contact the fixture sealing ring 26 to achieve a seal and prevent air leakage, thereby improving the accuracy of the test data.

[0025] The detection workpiece 3 is provided with a microphone through hole 31 at a position aligned with the circular support block 23, and the detection workpiece 3 is further provided with a microphone 32 at a position corresponding to the microphone through hole 31, specifically, when the detection workpiece 3 is placed in the jig 2 through the workpiece embedding groove 21, the detection workpiece 3 is aligned with the circular support block 23 at the position provided with the microphone through hole 31, the microphone through hole 31 is connected with the jig air duct 24 through extrusion of the jig sealing ring 26, and since the microphone 32 is correspondingly arranged between the microphone through hole 31 and the jig air duct 24, the ventilation amount of the microphone through hole 31 can be detected.

[0026] The air inlet mechanism 5 comprises an upper clamping block 51 provided with an air inlet channel and fixedly installed at the output end of the telescopic air cylinder 4, an air inlet hose 51 fixedly installed on the upper clamping block 51 and connected with the air inlet channel, a lower clamping block 53 fixedly installed on the upper clamping block 51 through screws, a clamping block sealing ring 54 arranged between the upper clamping block 51 and the lower clamping block 53, a gas feeding nozzle 55 arranged on the lower clamping block 53 and connected with the air inlet channel of the upper clamping block 5, and a rubber sleeve 56 sleeved on the gas feeding nozzle 55, specifically, the telescopic air cylinder 4 is controlled to be pressed down to make the corrugated rubber sleeve 56 tightly contact the position of the detection workpiece 3 provided with the microphone through hole 31, and the gas is sent into the detection workpiece 3 through the microphone through hole 31, and the gas blocked by the microphone 32 is then introduced into the jig air duct 24, and the exhaust hose 25 connected with the jig air duct 24 is used to guide the gas out, and the exhaust hose 25 is externally connected with a flow meter, and the value detected by the flow meter is the ventilation amount of the microphone through hole, so that whether the ventilation amount meets the standard can be determined.

[0027] In the embodiment, the rubber sleeve 56 is a corrugated rubber sleeve, which can be folded and kept to feed gas when the rubber sleeve 56 contacts the detection workpiece 3.

[0028] The above embodiments of the utility model are not the limitation of the protection scope of the utility model, and the implementation mode of the utility model is not limited to this, and according to the above content of the utility model, according to the ordinary technical knowledge and conventional means in the art, other various forms of modification, replacement or change of the above structure of the utility model are made without departing from the above basic technical thought of the utility model, and all should fall within the protection scope of the utility model.

Claims

1. A gas flow detection tool, comprising a detection support, a tool placed on the detection support, a detection workpiece placed on the tool, a telescopic cylinder installed on the detection support and above the tool, and a gas inlet mechanism with an external gas storage cylinder installed on the output end of the telescopic cylinder, characterized in that, The jig comprises a jig body, a workpiece embedding groove opened on the upper end of the jig body, a circular support block integrally formed with the jig body and located at the central part of the workpiece embedding groove, a jig air duct with one end penetrating through the middle part of the circular support block and the other end penetrating through the side surface of the jig body, an exhaust hose connected to the jig air duct through an air nozzle, and a jig sealing ring placed on the circular support block.

2. The gas flow detection tool of claim 1, wherein A sealing ring embedding groove is opened on the upper surface of the circular support block.

3. The gas flow detection tool of claim 1, wherein The detection support comprises a bottom plate for placing the jig, a support column fixed vertically on the side of the bottom plate, and a top plate fixedly installed with the support column for assembling the telescopic air cylinder.

4. The gas flow detection tool of claim 1, wherein The detection workpiece is provided with a microphone through hole at the part aligned with the circular support block, and is further provided with a microphone installed at the part corresponding to the microphone through hole.

5. The gas flow detection tool of claim 1, wherein, The air inlet mechanism comprises an upper clamp block with an air inlet channel fixedly installed with the output end of the telescopic air cylinder, an air inlet hose fixedly installed on the upper clamp block and connected to the air inlet channel, a lower clamp block fixedly installed with the upper clamp block through screws, a clamp block sealing ring arranged between the upper clamp block and the lower clamp block, a gas sending nozzle assembled on the lower clamp block and connected to the air inlet channel of the upper clamp block, and a rubber sleeve sleeved on the gas sending nozzle.

6. The gas flow detection tool of claim 5, wherein, The rubber sleeve is a corrugated rubber sleeve.

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