Fixing seat for respiratory resistance testing head mold of air respirator

Abstract

The utility model belongs to the technical field of air respirator mask inspection, and particularly relates to an air respirator respiratory resistance testing head mold fixing seat which comprises a base, a pair of lower supporting plates are arranged on the base, the top ends of the lower supporting plates are connected with a pair of upper supporting plates through a cross-shaped connecting seat, and the cross-shaped connecting seat is in damping rotating connection with the upper supporting plates and the lower supporting plates. A universal joint structure is formed; the top end of the upper support plate is connected with the mounting plate, and the head mold is fixed on the mounting plate and can swing forwards, backwards, leftwards and rightwards, so that the breathing resistance test in upright, forward-falling, backward-leaning and left-right side-lying directions is realized. According to the utility model, the universal joint structure rotating in a damping manner is adopted, so that the test head mold can easily realize multi-direction swinging in front, back, left and right directions, and various test postures such as standing, forward falling, backward leaning, left and right lying on the side and the like can be quickly switched. The test process is greatly simplified, and the test efficiency is improved. Meanwhile, due to standardization and stability of the posture of the head mold, the test accuracy is further improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to an air respirator breathing resistance test head mould fixing base belongs to air respirator mask inspection technical field. BACKGROUND

[0002] Breathing resistance test is an important link for measuring the performance of air respirator mask and other products. During the test, the mask needs to be installed on a standard test head mould, and a device simulating human respiration is used to measure the breathing resistance value at different spatial positions to ensure its applicability in various complex use environments.

[0003] At present, the fixing device of the test head mould mostly adopts a one-way fixing structure, such as a base that can only keep the head mould facing forward. If the performance of the mask in a non-typical orientation such as forward leaning, backward tilting, and side turning needs to be tested, the posture of the head mould usually needs to be adjusted manually, which makes it difficult to realize standardized switching of the posture and seriously limits the efficiency and accuracy of the breathing resistance test.

[0004] Therefore, it is urgent to develop a test head mould mounting seat with multi-directional quick switching, stable locking, and standardized positioning functions to meet the technical needs of efficient and accurate testing of modern respiratory protection equipment detection. UTILITY MODEL CONTENTS

[0005] According to the above deficiencies in the prior art, the technical problem to be solved by the utility model is to provide an air respirator breathing resistance test head mould fixing base that realizes accurate positioning of the test head mould and ensures standardized collection of breathing resistance test data in different test postures.

[0006] The air respirator breathing resistance test head mould fixing base, comprising a base, a pair of lower support plates are provided on the base, the top ends of the lower support plates are connected to a pair of upper support plates through a cross connecting seat, the cross connecting seat and the upper and lower support plates are all connected in a damping rotary manner to form a universal joint structure; the top ends of the upper support plates are connected to a mounting plate, and a head mould is fixed on the mounting plate and can swing forward, backward, left and right to realize the test of breathing resistance in the upright, forward leaning, backward tilting, and left and right side lying orientations.

[0007] Among them, the mounting plate and the base are provided with a gas guide hose, the gas guide hose serves as a pipeline connecting the head mould and a breathing tester (with a simulated breathing function), one end of the gas guide hose is connected to a breathing port on the head mould, and the other end of the gas guide hose is connected to the breathing tester.

[0008] Preferably, the cross connecting seat comprises a seat body and four end shafts, the seat body is a cube, the four end shafts are arranged on the four sides of the seat body, the upper and lower support plates are connected in a damping rotary manner with the end shafts, and the gas guide hose passes through the center of the seat body.

[0009] Preferably, the upper and lower support plates are connected to the end shafts by screws, and the damping size is adjusted by the screws.

[0010] Preferably, the inner side of the connection between the upper and lower support plates and the end shafts is provided with a cross-shaped clamping protrusion, and the end face of the end shaft is provided with a cross-shaped clamping groove. This can make the head mold firmly maintain the upright, forward leaning, backward leaning or lateral lying position.

[0011] The utility model has the beneficial effects compared with the prior art:

[0012] 1. Realize multi-directional quick switching: the utility model discloses a damping rotation universal joint structure (comprising a cross-shaped connecting seat and upper and lower support plates), which enables the test head mold to easily realize multidirectional swinging in front, back, left and right, thereby quickly switching to various test postures such as upright, forward leaning, backward leaning, lateral lying and the like.

[0013] 2. Ensure stable locking: the damping rotation connection between the upper and lower support plates and the cross-shaped connecting seat, as well as the design of the clamping protrusion and the clamping groove, enable the head mold to be stably maintained at the position after being adjusted to the required posture, effectively avoiding the shaking or displacement of the head mold during the test, and ensuring the stability of the test.

[0014] 3. Standardized positioning function: due to the combination of the universal joint structure and the clamping design, the utility model can ensure the accurate positioning of the test head mold in different test postures, make the test conditions between different laboratories comparable, and improve the accuracy and reliability of the test data.

[0015] 4. Improve test efficiency and accuracy: compared with the traditional manual moving and adjusting of the head mold posture, the utility model greatly simplifies the test process and improves the test efficiency. At the same time, due to the standardization and stability of the head mold posture, the test accuracy is also further improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 is the three-dimensional structure schematic diagram of the utility model;

[0017] Fig. 2 is the front view structure schematic diagram of the utility model;

[0018] Fig. 3 is the side view structure schematic diagram of the utility model;

[0019] Fig. 4 is the cross-sectional structure schematic diagram of the cross-shaped connecting seat;

[0020] Fig. 5 is the schematic diagram of the clamping protrusion provided on the support plate;

[0021] Fig. 6This is a schematic diagram showing the locking groove on the cross connector.

[0022] In the diagram: 1. Base; 2. Lower support plate; 3. Screw; 4. Cross connector; 41. Seat body; 42. End shaft; 5. Upper support plate; 6. Mounting plate; 7. Head mold; 8. Breathing port; 9. Air guide hose; 10. Locking protrusion; 11. Locking groove. Detailed Implementation

[0023] The present invention will be further described below with reference to specific embodiments.

[0024] The description of this utility model is merely a structural or even functional description of the embodiments, and the scope of this utility model is not limited by the embodiments described herein.

[0025] like Figs. 1-6 As shown, this embodiment is achieved through the following technical solution: It includes a base 1, on which a pair of lower support plates 2 are provided. The top ends of the lower support plates 2 are connected to a pair of upper support plates 5 via a cross-shaped connecting seat 4. The cross-shaped connecting seat 4 and the upper and lower support plates are both damped rotatably connected, forming a universal joint structure. Specifically, the cross-shaped connecting seat 4 includes a seat body 41 and four end shafts 42. The seat body 41 is cubic, and the four end shafts 42 are respectively located on the four sides of the seat body 41. The upper and lower support plates are damped rotatably connected to the end shafts 42, and the upper and lower support plates are connected to the end shafts 42 by screws 3, and the damping magnitude is adjusted by the screws 3. The top ends of the upper support plates 5 are connected to a mounting plate 6, and the head mold 7 is fixed on the mounting plate 6, allowing it to swing back and forth and left and right.

[0026] Among them, an air guide hose 9 is provided between the mounting plate 6 and the base 1. One end of the air guide hose 9 is connected to the breathing port 8 on the head mold 7, and the other end is connected to the breathing tester. The air guide hose 9 passes through the center of the base 41.

[0027] In order to ensure that the head mold 7 can be stably held in the desired position after being adjusted, a cross-shaped locking protrusion 10 is provided on the inner side of the connection between the upper and lower support plates and the end shaft 42, and correspondingly, a cross-shaped locking groove 11 is provided on the end face of the end shaft 42.

[0028] This invention utilizes a damped rotation universal joint structure, enabling the test head mold to easily swing in multiple directions (forward, backward, left, and right), thus quickly switching to various test postures such as upright, forward tilting, backward tilting, and left or right side-lying. This greatly simplifies the testing process and improves testing efficiency. Furthermore, the standardization and stability of the head mold's posture further enhances testing accuracy.

[0029] Of course, the above only the preferred embodiments of the present application, can not be considered to limit the scope of the embodiments of the present application. The present application is not limited to the above examples, the ordinary skilled in the art within the scope of the present application made by the equivalent changes and improvements, should be attributed to the present application within the scope of the patent.

Claims

1. An air respirator breathing resistance test headform fixture comprising: The application relates to a head moulding device, which comprises a base (1), a pair of lower supporting plates (2) arranged on the base (1), a pair of upper supporting plates (5) connected to the top ends of the lower supporting plates (2) through cross connecting seats (4), and a mounting plate (6) connected to the top ends of the upper supporting plates (5), wherein the cross connecting seats (4) are in damping rotary connection with the upper and lower supporting plates, forming a universal joint structure; and a head mould (7) is fixed on the mounting plate (6) and can swing in front, back, left and right directions.

2. The air respirator breathing resistance test headform fixture of claim 1, wherein, A gas guide hose (9) is arranged between the mounting plate (6) and the base (1), one end of the gas guide hose (9) is connected to a breathing port (8) on the head mould (7), and the other end of the gas guide hose (9) is connected to a breathing tester.

3. The air respirator breathing resistance test headform fixture of claim 2, wherein, The cross connecting seat (4) comprises a seat body (41) and four end shafts (42), the seat body (41) is a cuboid, the four end shafts (42) are arranged on four side faces of the seat body (41), the upper and lower supporting plates are in damping rotary connection with the end shafts (42), and the gas guide hose (9) passes through the center of the seat body (41).

4. The air respirator breathing resistance test headform fixture of claim 3, wherein, The upper and lower supporting plates are connected with the end shafts (42) through screws (3), and the damping size is adjusted through the screws (3).

5. The air respirator breathing resistance test headform holder of claim 4, wherein, The inner side of the connecting position of the upper and lower supporting plates and the end shafts (42) is provided with cross-shaped clamping convex strips (10), and the end face of the end shaft (42) is provided with cross-shaped clamping grooves (11) corresponding to the clamping convex strips (10).

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