Air volume determinator and protection structure of air volume determinator

Abstract

The utility model discloses an air volume determinator and a protection structure of the air volume determinator, a detection end of the air volume determinator is provided with a detection needle head, the detection needle head extends forwards, the protection structure of the air volume determinator comprises a protection shell and a protection support, the protection shell is used for being installed in front of the detection end, and the protection support is used for supporting the detection needle head. The two ends of the protective shell in the front-back direction are a connecting end and a free end respectively, a via hole is formed in the protective shell, the via hole extends from the connecting end to the free end and penetrates through the protective shell, the via hole is used for allowing the detection needle to penetrate through, and part of the detection needle extends forwards out of the via hole; the protection support is installed on the protection shell and extends forwards to the front of the detection needle head, an open type protection space is defined by the protection support, and the protection support is arranged on the outer side of the detection needle head in a surrounding mode so that the part, penetrating out of the via hole, of the detection needle head can be located in the open type protection space. According to the utility model, the detection needle head is prevented from being damaged due to direct contact with a to-be-detected point, and the use reliability of the air volume tester is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of air volume detection, in particular to an air volume measuring instrument and a protective structure of the air volume measuring instrument. Background Art

[0002] Automobile air conditioning defrosting and defogger is a regulatory item (GB11555-2009). The car must pass the certification of this item before it is produced and sold. The specific test requirement is to use measuring instruments to measure the air volume and wind speed of the air conditioner on the inside of the main and co-pilot windows of the car to see if it meets the regulatory requirements for defrosting and defogger.

[0003] At present, the general measurement method is that the measurement personnel hold the wind volume meter at the specified position of the main driver's and co-driver's windows in the car to measure and record the data. The measurement personnel hold the wind volume meter close to the point to be tested on the glass to collect and record data. However, when using the wind volume meter, since the wind volume meter needs to be close to the point to be tested, it is difficult for the measurement personnel to measure the contact strength between the wind volume meter and the point to be tested, and the detection needle of the wind volume meter is prone to collision with the point to be tested, resulting in damage to the detection needle. Utility Model Content

[0004] The main purpose of the utility model is to provide an air volume measuring instrument and a protective structure for the air volume measuring movement, aiming to solve the technical problem in the prior art that the detection needle of the air volume measuring instrument is easily damaged when the air volume measuring instrument is used.

[0005] In order to achieve the above-mentioned object, the utility model proposes a protective structure of an air volume measuring instrument, wherein a detection needle is provided at the detection end of the air volume measuring instrument, and the detection needle is extended forward. The protective structure of the air volume measuring instrument comprises:

[0006] A protective shell, the protective shell is used to be installed in front of the detection end, the two ends of the protective shell in the front-to-back direction are respectively a connecting end and a free end, a through hole is formed on the protective shell, the through hole extends from the connecting end toward the free end and penetrates the protective shell, the through hole is used for the detection needle to pass through, and a part of the detection needle extends forward from the through hole;

[0007] A protective bracket is installed on the protective shell, the protective bracket extends forward to the front of the detection needle, and the protective bracket encloses an open protective space, and the protective bracket is arranged around the outside of the detection needle so that the part of the detection needle passing through the through hole is located in the open protective space.

[0008] Optionally, the protective bracket includes an abutment portion and a connecting portion, the abutment portion forms a vent for gas circulation, the connecting portion includes a plurality of connecting rods, the plurality of connecting rods are arranged at intervals around the detection needle, each of the connecting rods extends in the front-to-back direction, and the front and rear ends of each of the connecting rods are respectively connected to the abutment portion and the protective shell, the abutment portion and the plurality of connecting rods enclose to form the open protective space.

[0009] Optionally, there are two connecting rods, which are disposed on both sides of the detection needle.

[0010] Optionally, the abutment portion is a U-shaped rod, the U-shaped rod encloses the vent, both ends of the opening of the U-shaped rod are respectively connected to the front ends of the two connecting rods one by one, and the U-shaped rod is set at an angle to the two connecting rods.

[0011] Optionally, the U-shaped rod and the two connecting rods are arranged at right angles.

[0012] Optionally, the U-shaped rod and the two connecting rods are integrally formed, and two ends of the opening of the U-shaped rod are respectively smoothly transitionally connected to the front ends of the two connecting rods.

[0013] Optionally, the outer wall of the protective shell is formed with a plurality of insertion holes at intervals along its circumference, and the rear ends of the plurality of connecting rods are respectively inserted into the plurality of insertion holes, and the number of the insertion holes and the connecting rods are consistent and one-to-one corresponding.

[0014] Optionally, a base is further provided at the rear of the connecting end, and a snap-in groove is formed on the base, and the snap-in groove is used for snap-fitting with the detecting end so as to install the connecting end in front of the detecting end.

[0015] Optionally, a protective sleeve is installed at the free end, and the protective sleeve is located in front of the free end. The inner cavity of the sleeve is connected to the through hole, and the part of the detection needle passing through the through hole passes through the protective sleeve and extends forward out of the protective sleeve.

[0016] On the other hand, the utility model also provides an air volume measuring instrument, which is equipped with the above-mentioned protective structure of the air volume measuring instrument.

[0017] The above one or more technical solutions provided by the present utility model may have the following advantages or at least achieve the following technical effects:

[0018] The utility model proposes an air volume measuring instrument and a protective structure for the air volume measuring instrument. A protective shell is provided, a through hole is formed in the protective shell, and the through hole penetrates the protective shell from the connecting end to the free end along the front-to-back direction. The protective shell is installed in front of the detection end of the air volume measuring instrument, and the detection needle on the detection end extends into the through hole and extends out of the through hole. A protective bracket is also installed on the protective shell, and the protective bracket extends forward to the front of the detection needle. The protective bracket forms an open protective space, and the detection needle is accommodated in the open protective space. When the air volume measuring instrument is used, the protective bracket is pressed against the point to be detected, and since the protective bracket forms the open protective space, the airflow can flow from the outside of the protective bracket into the open protective space for measurement by the detection needle, so that the air volume can be detected. It is only necessary to press the protective bracket against the point to be detected, and there is no need for the detection needle to contact the point to be detected, thereby avoiding damage caused by direct contact between the detection needle and the point to be detected, and improving the reliability of the use of the air volume measuring instrument. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0020] Figure 1 This is a schematic diagram of the structure of the protection structure of the air volume detector according to one embodiment of the utility model;

[0021] Figure 2 It is a structural schematic diagram of another perspective of the protective structure of the air volume detector according to one embodiment of the utility model;

[0022] Figure 3 It is a schematic diagram of the partial structure of the detection end of the air volume detector according to one embodiment of the utility model.

[0023] Description of Figure Numbers:

[0024]

[0025]

[0026] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present utility model are only used to explain the position of the user in a certain posture (such as the attached Figure 1 To Attachment Figure 3 The relative position relationship, movement status, etc. between the various components under the specific posture are shown. If the specific posture changes, the directional indication will also change accordingly.

[0029] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0031] The utility model proposes a protective structure 100 of an air volume measuring instrument, wherein a detection end 200 of the air volume measuring instrument is provided with a detection needle 210, and the detection needle 210 is extended forwardly. The protective structure 100 of the air volume measuring instrument comprises a protective shell 10 and a protective bracket 20: wherein the protective shell 10 is used to be installed in front of the detection end 200, and the two ends of the protective shell 10 in the front-to-back direction are respectively a connecting end 11 and a free end 12, a through hole 15 is formed on the protective shell 10, and the through hole 15 extends from the connecting end 11 to the free end 12 and penetrates the protective shell 10, the through hole 15 is used for the detection needle 210 to pass through, and a part of the detection needle 210 extends forwardly out of the through hole 15; the protective bracket 20 is installed on the protective shell 10, the protective bracket 20 extends forwardly to the front of the detection needle 210, and the protective bracket 20 encloses an open protective space, and the protective bracket 20 is arranged on the outside of the detection needle 210 so that the part of the detection needle 210 passing through the through hole 15 is located in the open protective space.

[0032] In this embodiment, a protective structure 100 of the air volume meter is installed at the detection end 200 of the air volume meter. The air volume meter with the protective structure 100 installed can be placed close to the detection point on the inside of the main driver's and co-driver's windows of the car to measure the air volume and wind speed of the air conditioner.

[0033] Specifically, Figures 1 to 3 As shown, a protective shell 10 is provided, a through hole 15 is formed in the protective shell 10, and the through hole 15 penetrates the protective shell 10 from the connecting end 11 to the free end 12 along the front-to-back direction. The protective shell 10 is installed in front of the detection end 200 of the air volume detector, and the detection needle 210 on the detection end 200 extends into the through hole 15 and extends out of the through hole 15. A protective bracket 20 is also installed on the protective shell 10, and the protective bracket 20 extends forward to the front of the detection needle 210. The protective bracket 20 forms an open protection space, and the detection needle 210 is connected to the protective shell 10. 10 is accommodated in the open protective space. When the wind volume detector is used, the protective bracket 20 is placed close to the point to be detected. Since the protective bracket 20 forms an open protective space, airflow can flow from the outside of the protective bracket 20 into the open protective space for measurement by the detection needle 210, so as to realize the detection of the wind volume. It is only necessary to place the protective bracket 20 close to the point to be detected, and there is no need for the detection needle 210 to contact the point to be detected, which avoids damage caused by direct contact between the detection needle 210 and the point to be detected, thereby improving the reliability of the wind volume meter.

[0034] In one embodiment, the protective bracket 20 includes an abutment portion 21 and a connecting portion 22, the abutment portion 21 forms a vent 211 for gas circulation, and the connecting portion 22 includes a plurality of connecting rods 221, the plurality of connecting rods 221 are arranged at intervals around the detection needle 210, each connecting rod 221 extends in the front-to-back direction, and the front and rear ends of each connecting rod 221 are respectively connected to the abutment portion 21 and the protective shell 10, the abutment portion 21 and the plurality of connecting rods 221 enclose the open protective space.

[0035] Specifically, Figure 1 and Figure 2 As shown, a plurality of connecting rods 221 are installed on the protective shell 10, and the plurality of connecting rods 221 are arranged at intervals around the detection needle 210. The abutment portion 21 forms a vent 211. The abutment portion 21 and the plurality of connecting rods 221 enclose an open protective space. When the air volume meter is used, the air flow can enter the open protective space from the gap between the vent 211 and the plurality of connecting rods 221 for measurement by the detection needle 210, and the detection needle 210 is located in the open protective space. The abutment portion 21 and the plurality of connecting rods 221 are arranged around the detection needle 210, which can prevent the detection needle 210 from contacting and colliding with the point to be detected, thereby preventing the detection needle 210 from being damaged. The reliability of the air volume meter is higher.

[0036] In one embodiment, there are two connecting rods 221, and the two connecting rods 221 are disposed on both sides of the detection needle 210. As shown in the figure, only two connecting rods 221 are provided on both sides of the detection needle 210 to stably connect the abutting end. The structure is light, and the abutting portion 21 and the two connecting rods 221 can enclose an open protective space to protect the detection needle 210. A larger gap can be formed between the two connecting rods 221 for airflow to pass through. The structure is reasonable and the design is ingenious.

[0037] In one embodiment, the abutment portion 21 is a U-shaped rod, which encloses a vent 211 , and the two ends of the opening of the U-shaped rod are respectively connected to the front ends of the two connecting rods 221 one by one, and the U-shaped rod and the two connecting rods 221 are set at an angle.

[0038] Specifically, Figure 1 and Figure 2 As shown, by using a U-shaped rod as the abutment portion 21, the vent 211 is larger, allowing the airflow to pass through and enter the open protection space better, thereby improving the accuracy of the measurement. The opening of the U-shaped rod is connected to the front ends of the two connecting rods 221 in a one-to-one correspondence, which further strengthens the overall structural stability of the protection bracket 20 and also forms a more effective protection for the detection needle 210. Due to the angle setting of the U-shaped rod and the connecting rod 221, this structure can better adapt to different application scenarios and needs, improving the versatility and adaptability of the protection structure 100.

[0039] In one embodiment, the U-shaped rod and the two connecting rods 221 are arranged at right angles. Specifically, the U-shaped rod and the two connecting rods 221 arranged at right angles can enable the detection needle 210 to measure perpendicularly to the surface to be detected, and the measurement effect is better. The U-shaped rod and the two connecting rods 221 arranged at right angles are easier to manufacture in a standardized manner, and the manufacturing is convenient.

[0040] In one embodiment, the U-shaped rod and the two connecting rods 221 are integrally formed, and the two ends of the opening of the U-shaped rod are respectively smoothly transitionally connected to the front ends of the two connecting rods 221 .

[0041] Specifically, the U-shaped rod and the two connecting rods 221 are integrally formed, which improves the structural stability of the protective bracket 20, and the two ends of the opening of the U-shaped rod are smoothly connected to the front ends of the two connecting rods 221, so that when the U-shaped rod contacts the point to be detected, scratches on the point to be detected are avoided.

[0042] In one embodiment, a plurality of insertion holes 14 are formed at intervals along the circumference of the outer wall of the protective shell, and the rear ends of the plurality of connecting rods 221 are respectively inserted into the plurality of insertion holes 14 , and the number of the insertion holes 14 and the number of the connecting rods 221 are the same and correspond one to one.

[0043] Specifically, Figure 1 As shown, by inserting the rear end of the connecting rod 221 into the insertion hole 14, the installation is relatively firm and convenient, and the installation process of the protection bracket 20 can be completed quickly, reducing the installation time and difficulty.

[0044] In one embodiment, a base 16 is further disposed behind the connecting end 11 , and a snap-in groove 161 is formed on the base 16 . The snap-in groove 161 is used to snap-fit ​​with the detecting end 200 so as to install the connecting end 11 in front of the detecting end 200 .

[0045] Specifically, Figure 2 As shown, by using the snap-in slot 161, the connection end 11 can be conveniently and quickly installed in front of the detection end 200, simplifying the installation process. The close fit between the snap-in slot 161 and the detection end 200 can make the connection end 11 of the protective shell 10 more firmly installed in front of the detection end 200 of the air volume measuring instrument, thereby improving the stability of the overall structure.

[0046] In one embodiment, the free end 12 is further provided with a protective sleeve 13 , which is located in front of the free end 12 , and the inner cavity of the sleeve is connected with the through hole 15 , and the part of the detection needle 210 passing through the through hole 15 passes through the protective sleeve 13 and extends forward out of the protective sleeve 13 .

[0047] Specifically, Figure 1As shown, a protective sleeve 13 is also installed in front of the free end 12 , and the part of the detection needle 210 that passes through the through hole 15 passes through the protective sleeve 13 so that the protection structure 100 can be more firmly installed on the detection end 200 .

[0048] On the other hand, the utility model also proposes an air volume measuring instrument, which is applied with the above-mentioned air volume measuring instrument protection structure 100. The specific structure of the air volume measuring instrument refers to the above-mentioned embodiment. Since the air volume measuring instrument adopts all the technical solutions of all the above-mentioned embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here one by one.

[0049] The above description is only an optional embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A protective structure for an air volume measuring instrument, wherein a detection needle is provided at the detection end of the air volume measuring instrument, and the detection needle is extended forward, characterized in that: The protective structure of the air volume measuring instrument comprises: A protective shell, the protective shell is used to be installed in front of the detection end, the two ends of the protective shell in the front-to-back direction are respectively a connecting end and a free end, a through hole is formed on the protective shell, the through hole extends from the connecting end toward the free end and penetrates the protective shell, the through hole is used for the detection needle to pass through, and a part of the detection needle extends forward from the through hole; A protective bracket is installed on the protective shell, the protective bracket extends forward to the front of the detection needle, and the protective bracket encloses an open protective space, and the protective bracket is arranged around the outside of the detection needle so that the part of the detection needle passing through the through hole is located in the open protective space.

2. The protective structure of the air flow meter according to claim 1, characterized in that: The protective bracket includes an abutment portion and a connecting portion, the abutment portion forms a vent for gas circulation, the connecting portion includes a plurality of connecting rods, the plurality of connecting rods are arranged at intervals around the detection needle, each of the connecting rods extends in the front-to-back direction, and the front and rear ends of each of the connecting rods are respectively connected to the abutment portion and the protective shell, the abutment portion and the plurality of connecting rods enclose the open protective space.

3. The protective structure of the air flow meter according to claim 2, characterized in that: The number of the connecting rods is two, and the two connecting rods are respectively arranged on both sides of the detection needle.

4. The protective structure of the air flow meter according to claim 3, characterized in that: The abutting portion is a U-shaped rod, which encloses the vent, and the two ends of the opening of the U-shaped rod are respectively connected to the front ends of the two connecting rods in a one-to-one correspondence, and the U-shaped rod is set at an angle to the two connecting rods.

5. The protective structure of the air flow meter according to claim 4, characterized in that: The U-shaped rod and the two connecting rods are arranged at right angles.

6. The protective structure of the air flow meter according to claim 4, characterized in that: The U-shaped rod and the two connecting rods are integrally formed, and the two ends of the opening of the U-shaped rod are respectively smoothly transitionally connected to the front ends of the two connecting rods.

7. The protective structure of the air flow meter according to claim 2, characterized in that: The outer wall of the protective shell is formed with a plurality of insertion holes at intervals along its circumference. The number of the insertion holes is consistent with that of the connecting rods and they correspond one to one. The rear end of each connecting rod is inserted into the corresponding insertion hole.

8. The protective structure for the air flow meter according to any one of claims 1 to 7, characterized in that: A base is also provided at the rear of the connecting end, and a clamping groove is formed on the base. The clamping groove is used for clamping and cooperating with the detecting end so as to install the connecting end in front of the detecting end.

9. The protective structure for the air flow meter according to any one of claims 1 to 7, characterized in that: The free end is also provided with a protective sleeve, which is located in front of the free end. The inner cavity of the sleeve is connected with the through hole, and the part of the detection needle passing through the through hole passes through the protective sleeve and extends forward out of the protective sleeve.

10. An air volume measuring instrument, characterized in that: The air flow meter is provided with the air flow meter protection structure according to any one of claims 1 to 9.

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