Vehicle-mounted part air tightness testing device

Abstract

The utility model relates to the technical field of vehicle-mounted part detection, and discloses a vehicle-mounted part air tightness testing device which comprises a bottom plate, a support, a chassis and a connecting column are installed on the upper surface of the bottom plate, a second driving air cylinder is installed on the outer surface of the support, and the output end of the second driving air cylinder penetrates through the support and is provided with an inflation head. A base is installed on the upper surface of the chassis, a top plate is installed on the upper surface of the connecting column, a first driving cylinder is installed on the upper surface of the top plate, the output end of the first driving cylinder penetrates through the top plate and is provided with a connecting block, and a pressing disc is installed on the connecting block through a connecting assembly. According to the utility model, a threaded connection mode between the pressure plate and the first driving cylinder is replaced by the connecting assembly, so that the phenomenon of thread abrasion is avoided, the stability of connection between the pressure plate and the first driving cylinder is ensured, and a better practical effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle component detection, in particular to an airtightness testing device for vehicle components. Background Technique

[0002] Airtightness detection, also known as leak detection, is an index reflecting the tightness of a product. The airtight performance of vehicle components is one of the important factors affecting product quality. In the process of vehicle component detection, the detection of the airtightness of vehicle components is an essential step.

[0003] The utility model patent application document with the publication number of "CN221224119U" discloses an airtightness testing device for end - cover - type parts, which mainly consists of a bracket, a pressing device, a base, an assembly step and an inflation head. This technical solution can realize the airtightness test of workpieces, and the airtightness of the product can be guaranteed after the test.

[0004] The airtightness testing device for end - cover - type parts disclosed in the above document has the following defects: The pressure plate of this airtightness testing device is connected to the first driving cylinder through threads or buckles. However, in the case of threaded connection, after repeated disassembly of the pressure plate, the threads of the pressure plate or the first driving cylinder may be worn, thus affecting the connection between the pressure plate and the first driving cylinder.

[0005] It can be seen that the pressure plate of the existing airtightness testing device does not have a good connection structure, and it is necessary to improve the existing deficiencies to provide an airtightness testing device for vehicle components. Summary of the Utility Model

[0006] The purpose of the utility model is to provide an airtightness testing device for vehicle components to solve the problems raised in the above background technique.

[0007] To solve the above - mentioned technical problems, the utility model is realized through the following technical solutions:

[0008] The utility model is an airtightness testing device for vehicle components, including a bottom plate. A bracket, a chassis and a connecting column are installed on the upper surface of the bottom plate. A second driving cylinder is installed on the outer surface of the bracket. The output end of the second driving cylinder penetrates through the bracket and is installed with an inflation head. A base is installed on the upper surface of the chassis. A top plate is installed on the upper surface of the connecting column. A first driving cylinder is installed on the upper surface of the top plate. The output end of the first driving cylinder penetrates through the top plate and is installed with a connecting block. The connecting block is installed with a pressure plate through a connecting component.

[0009] Further, the connecting component includes a mounting block, a through opening is formed on the outer surface of the mounting block, a fixing block is slidably connected inside the through opening, the fixing blocks are set to be two and symmetrically distributed, a first spring is installed between the two fixing blocks, a mounting hole is formed on the outer surface of the connecting block, the mounting block is fitted and installed inside the mounting hole, and the outer surface of the fixing block abuts against the outer surface of the connecting block.

[0010] Further, a chute is formed on the upper surface of the pressure plate, a connecting rod is installed inside the chute, a mounting block is slidably connected to the outer surface of the connecting rod, a second spring is sleeved on the outer surface of the connecting rod, one end of the second spring is installed on the inner surface of the chute, and the other end of the second spring is installed on the outer surface of the mounting block.

[0011] Further, a guide rod is further installed on the upper surface of the bottom plate, a sliding plate is slidably connected to the outer surface of the guide rod, a third spring is sleeved on the outer surface of the guide rod, one end of the third spring is installed on the lower surface of the sliding plate, and the other end of the third spring is installed on the upper surface of the bottom plate.

[0012] Further, a connecting plate is provided on the outer surface of the connecting block, a through hole is formed on the outer surface of the connecting plate, a sleeve is installed inside the through hole, and a guide rod is slidably connected inside the sleeve.

[0013] Further, a cavity is formed inside the sleeve, an oil storage sponge is installed inside the cavity, an oil outlet hole is formed on the inner surface of the sleeve, a cover plate is installed on the upper surface of the sleeve, and an oil inlet hole is formed on the upper surface of the cover plate.

[0014] The utility model has the following beneficial effects:

[0015] (1) By setting the connecting component, the utility model replaces the threaded connection mode between the pressure plate and the first driving cylinder, thereby avoiding the occurrence of thread wear, ensuring the stability of the connection between the pressure plate and the first driving cylinder, and achieving a good practical effect.

[0016] (2) Through the oil inlet hole, lubricating oil can be injected into the cavity, so that the oil storage sponge is soaked with the lubricating oil. When the sleeve slides on the guide rod, the lubricating oil in the oil storage sponge is coated on the outer surface of the guide rod through the oil outlet hole to lubricate the guide rod. The lubricating oil can reduce the frictional resistance between the sleeve and the guide rod, and achieve the effect of prolonging the service life of the sleeve and the guide rod.

[0017] Of course, when implementing any product of the utility model, it is not necessarily required to achieve all the above-mentioned advantages simultaneously. Description of the Drawings

[0018] To more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 Schematic diagram of the overall structure of the present utility model;

[0020] Figure 2 Schematic diagram of the connection block, connection assembly and pressure plate structure of the present utility model;

[0021] Figure 3 Sectional view of the connection block and connection assembly structure of the present utility model;

[0022] Figure 4 Sectional view of the connecting plate, sleeve and guide rod structure of the present utility model;

[0023] In the drawings, the list of components represented by each reference numeral is as follows:

[0024] In the figure: 1, bottom plate; 2, bracket; 3, chassis; 4, connecting column; 5, second driving cylinder; 6, inflation head; 7, base; 8, top plate; 9, first driving cylinder; 10, connection block; 1001, mounting hole; 1002, connecting plate; 11, connection assembly; 1101, mounting block; 1102, through hole; 1103, fixing block; 1104, first spring; 1105, connecting rod; 1106, second spring; 12, pressure plate; 1201, chute; 13, guide rod; 14, sliding plate; 15, third spring; 16, sleeve; 17, oil storage sponge; 18, cover plate. Specific embodiments

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0026] Please refer to Figure 1 - Figure 4As shown in the figure, the utility model relates to an airtightness testing device for vehicle-mounted parts, which includes a bottom plate 1. A bracket 2, a chassis 3 and a connecting column 4 are installed on the upper surface of the bottom plate 1. A second driving cylinder 5 is installed on the outer surface of the bracket 2. The output end of the second driving cylinder 5 penetrates through the bracket 2 and is installed with an inflation head 6. A base 7 is installed on the upper surface of the chassis 3. A top plate 8 is installed on the upper surface of the connecting column 4. A first driving cylinder 9 is installed on the upper surface of the top plate 8. The output end of the first driving cylinder 9 penetrates through the top plate 8 and is installed with a connecting block 10. The connecting block 10 is installed with a pressing plate 12 through a connecting component 11;

[0027] During the detection of vehicle-mounted parts, first, the part is sleeved on the upper surface of the base 7, and then the first driving cylinder 9 is started. The output end of the first driving cylinder 9 pushes the pressing plate 12 downward, so that the pressing plate 12 is pressed against the upper surface of the part. After the part is pressed tightly, by starting the second driving cylinder 5, the output end of the second driving cylinder 5 is pushed to move the inflation head 6 towards the end close to the part, so that the air outlet nozzle of the inflation head 6 is docked with the air hole of the part. Then, gas is introduced into the inflation hole of the inflation head 6, and the gas will enter the interior of the part. When the inflation reaches a certain pressure, the inflation stops. After that, observe the air pressure change. If the change of the air pressure within a certain time is within a reasonable range, the airtightness of the part meets the requirements. If the change of the air pressure within a certain time exceeds the reasonable range, the airtightness of the part does not meet the requirements. After the airtightness detection of the part is completed, operate the output ends of the first driving cylinder 9 and the second driving cylinder 5 to reset, so that the pressing plate 12 and the inflation head 6 are separated from the part, and then the part is removed from the base 7 to complete the airtightness detection;

[0028] The connecting component 11 includes a mounting block 1101. A through hole 1102 is formed on the outer surface of the mounting block 1101. A fixing block 1103 is slidably connected inside the through hole 1102. The fixing blocks 1103 are set to be two and symmetrically distributed. A first spring 1104 is installed between the two fixing blocks 1103. A mounting hole 1001 is formed on the outer surface of the connecting block 10. The mounting block 1101 is fitted and installed inside the mounting hole 1001. The outer surface of the fixing block 1103 abuts against the outer surface of the connecting block 10;

[0029] A sliding groove 1201 is formed on the upper surface of the pressing plate 12. A connecting rod 1105 is installed inside the sliding groove 1201. The outer surface of the connecting rod 1105 is slidably connected with the mounting block 1101. A second spring 1106 is sleeved on the outer surface of the connecting rod 1105. One end of the second spring 1106 is installed on the inner surface of the sliding groove 1201, and the other end of the second spring 1106 is installed on the outer surface of the mounting block 1101;

[0030] When the pressure plate 12 needs to be disassembled, by squeezing the fixing blocks 1103 at both ends of the mounting block 1101, the two fixing blocks 1103 slide into the through port 1102, and at the same time, the first spring 1104 gradually contracts. When the outer surfaces of the two fixing blocks 1103 are flush with the outer surface of the mounting block 1101, then pull the mounting block 1101 outward, so that the mounting block 1101 slides outward along the axis in the chute 1201, and at the same time, the second spring 1106 gradually contracts. When the mounting block 1101 disengages from the inside of the mounting hole 1001, the connecting block 10 and the pressure plate 12 are then disassembled;

[0031] When the pressure plate 12 needs to be installed, by placing the pressure plate 12 directly below the connecting block 10, the upper surface of the pressure plate 12 is in contact with the upper surface of the connecting block 10. By pulling the mounting block 1101 outward, the mounting block 1101 slides outward along the axis in the chute 1201, and at the same time, the second spring 1106 gradually contracts. Then rotate the pressure plate 12 so that the mounting block 1101 is aligned with the mounting hole 1001. After the mounting block 1101 is aligned with the mounting hole 1001, cancel the force on the mounting block 1101, so that the second spring 1106 resumes elasticity and pushes the mounting block 1101 to move toward one end of the mounting hole 1001 in the chute 1201. Since the outer surface of the fixing block 1103 is provided with an inclined surface, when the fixing block 1103 comes into contact with the mounting hole 1001, the fixing block 1103 will slide into the through port 1102, and at the same time, the first spring 1104 gradually contracts. When the outer surface of the fixing block 1103 is flush with the outer surface of the mounting block 1101, the mounting block 1101 is fitted and installed in the mounting hole 1001. At the same time, the first spring 1104 resumes elasticity and pushes the fixing block 1103 to move outward in the through port 1102, so that the outer surface of the fixing block 1103 is in contact with the outer surface of the connecting block 10, completing the fixed installation of the pressure plate 12 and the connecting block 10;

[0032] A guide rod 13 is also installed on the upper surface of the bottom plate 1. A sliding plate 14 is slidably connected to the outer surface of the guide rod 13. A third spring 15 is sleeved on the outer surface of the guide rod 13. One end of the third spring 15 is installed on the lower surface of the sliding plate 14, and the other end of the third spring 15 is installed on the upper surface of the bottom plate 1;

[0033] When the pressure plate 12 is pressed down, the connecting plate 1002 will come into contact with the sliding plate 14 and gradually push the sliding plate 14 to slide downward along the axis. At the same time, the third spring 15 gradually contracts. During the contraction process of the third spring 15, it will slow down the impact force of the pressure plate 12 on the parts and the base 7, avoid damage to the parts and the base 7 caused by excessive impact force, ensure the product quality of the parts, and achieve a good practical effect;

[0034] The outer surface of the connecting block 10 is provided with a connecting plate 1002. Through holes are formed in the outer surface of the connecting plate 1002. A sleeve 16 is installed inside the through holes. A guide rod 13 is slidably connected inside the sleeve 16;

[0035] A cavity is formed inside the sleeve 16. An oil storage sponge 17 is installed inside the cavity. Oil outlet holes are formed in the inner surface of the sleeve 16. A cover plate 18 is installed on the upper surface of the sleeve 16. An oil inlet hole is formed in the upper surface of the cover plate 18;

[0036] Lubricating oil can be injected into the cavity through the oil inlet hole, so that the oil storage sponge 17 is soaked with the lubricating oil. When the sleeve 16 slides on the guide rod 13, the lubricating oil in the oil storage sponge 17 is coated on the outer surface of the guide rod 13 through the oil outlet holes, lubricating the guide rod 13. The lubricating oil can reduce the frictional resistance between the sleeve 16 and the guide rod 13, achieving the effect of extending the service life of the sleeve 16 and the guide rod 13.

[0037] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and changes can be made according to the content of this specification. These embodiments are selected and specifically described in this specification to better explain the principle and practical application of the present invention, so that those skilled in the relevant technical fields can understand and utilize the present invention well. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. An airtightness testing device for vehicle-mounted parts, comprising a bottom plate (1). A bracket (2), a chassis (3) and a connecting column (4) are installed on the upper surface of the bottom plate (1). A second driving cylinder (5) is installed on the outer surface of the bracket (2). The output end of the second driving cylinder (5) penetrates through the bracket (2) and is installed with an inflation head (6). A base (7) is installed on the upper surface of the chassis (3). A top plate (8) is installed on the upper surface of the connecting column (4), characterized in that: A first driving cylinder (9) is installed on the upper surface of the top plate (8). The output end of the first driving cylinder (9) penetrates through the top plate (8) and is installed with a connecting block (10). The connecting block (10) is installed with a pressure plate (12) through a connecting component (11).

2. The airtightness testing device for vehicle-mounted parts according to claim 1, wherein: The connecting component (11) includes a mounting block (1101). A through hole (1102) is formed on the outer surface of the mounting block (1101). A fixing block (1103) is slidably connected inside the through hole (1102). The fixing blocks (1103) are set to be two and symmetrically distributed. A first spring (1104) is installed between the two fixing blocks (1103); A mounting hole (1001) is formed on the outer surface of the connecting block (10). The mounting block (1101) is fitted and installed inside the mounting hole (1001). The outer surface of the fixing block (1103) abuts against the outer surface of the connecting block (10).

3. The airtightness testing device for vehicle components according to claim 2, wherein: A sliding groove (1201) is formed on the upper surface of the pressure plate (12). A connecting rod (1105) is installed inside the sliding groove (1201). The mounting block (1101) is slidably connected to the outer surface of the connecting rod (1105). A second spring (1106) is sleeved on the outer surface of the connecting rod (1105). One end of the second spring (1106) is installed on the inner surface of the sliding groove (1201), and the other end of the second spring (1106) is installed on the outer surface of the mounting block (1101).

4. The airtightness testing device for vehicle-mounted components according to claim 1, characterized in that: A guide rod (13) is further installed on the upper surface of the bottom plate (1). A sliding plate (14) is slidably connected to the outer surface of the guide rod (13). A third spring (15) is sleeved on the outer surface of the guide rod (13). One end of the third spring (15) is installed on the lower surface of the sliding plate (14), and the other end of the third spring (15) is installed on the upper surface of the bottom plate (1).

5. The airtightness testing device for vehicle-mounted parts according to claim 1, wherein: A connecting plate (1002) is provided on the outer surface of the connecting block (10). A through hole is formed on the outer surface of the connecting plate (1002). A sleeve (16) is installed inside the through hole. The guide rod (13) is slidably connected inside the sleeve (16).

6. The airtightness testing device for vehicle-mounted parts according to claim 5, characterized in that: A cavity is formed inside the sleeve (16). An oil storage sponge (17) is installed inside the cavity. An oil outlet hole is formed on the inner surface of the sleeve (16). A cover plate (18) is installed on the upper surface of the sleeve (16). An oil inlet hole is formed on the upper surface of the cover plate (18).

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