Airtightness detection device for evaporator of automobile air conditioner

Abstract

The utility model provides an air tightness detection device for an automobile air conditioner evaporator, which comprises a mounting table, and bases are arranged at four corners of the bottom side of the mounting table; the control assembly comprises an operation table slidably arranged on the mounting table and a driving part arranged at one end of the mounting table and used for pushing the operation table to slide; the clamping piece comprises two clamping arms movably arranged on the operation table and a bidirectional stud rotationally arranged on the operation table and in threaded connection with the two clamping arms, the bidirectional stud is used for driving the two clamping arms to be close to or away from each other, and the two clamping arms are used for clamping the evaporator body; the butt joint assembly is arranged at the end, away from the driving piece, of the mounting table and used for butt joint with an inlet and outlet of the evaporator body. The evaporator is limited and clamped through the two clamping arms, then the driving piece pushes the evaporator to advance to be in butt joint with the butt-joint assembly, the thrust of the driving piece is parallel to the counter-acting force of the butt-joint assembly, and the problem that the detection quality is affected due to the fact that the butt-joint sealing performance is poor due to the fact that the butt-joint force is too small is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile air-conditioning air-tightness detection, in particular to an automobile air-conditioning evaporator air-tightness detection device. Background Art

[0002] The evaporator is an important component in automotive air conditioners. Its function is to utilize the liquid low-temperature refrigerant to evaporate easily under low pressure, turn into steam and absorb the heat of the cooled medium to achieve the purpose of refrigeration. All automotive air conditioners must undergo air tightness testing after production.

[0003] For example, the Chinese utility model with announcement number CN208736631U discloses "an automobile air-conditioning evaporator air-tightness detection device", which includes a base, a lifting device is provided at one end of the upper surface of the base, and a fixed block is fixedly connected to the other end of the upper surface of the base, a lifting platform is fixedly installed on the upper end of the lifting device, the upper end of the fixed block is connected to a support frame, and a leak detector is installed on one side of the fixed block, and a docking device is fixedly connected to the upper end of the support frame. By driving the motor to control the docking head to move forward, moderate docking force can be ensured, thereby improving the sealing of the plugging and avoiding the problem of poor sealing of the docking plugging due to too small docking force.

[0004] However, since the above-mentioned device fixes the evaporator by clamping it up and down and then docking the evaporator during the docking process, the fixing force on the evaporator and the evaporator docking force are perpendicular to each other. If the docking force is too small, the docking sealing will be unstable. If the docking force is too large, the evaporator will be damaged, resulting in docking instability and affecting the detection quality. Utility Model Content

[0005] In response to the deficiencies in the prior art, the utility model provides an automobile air-conditioning evaporator air tightness detection device, which solves the problem in the prior art that the traditional evaporator detection device is unstable during the evaporator detection process, affecting the detection quality.

[0006] According to an embodiment of the utility model, an automobile air-conditioning evaporator air-tightness detection device includes a mounting platform with bases provided at the four corners of the bottom side; a control component including an operating table slidably provided on the mounting platform and a driving member provided at one end of the mounting platform for pushing the operating table to slide; a clamping member including two clamping arms movably provided on the operating platform, and a bidirectional stud rotatably provided on the operating platform and respectively threadedly connected to the two clamping arms, the bidirectional stud being used to drive the two clamping arms closer to or away from each other, and the two clamping arms being used to clamp the evaporator body; a docking component being provided at one end of the mounting platform away from the driving member and being used to dock the inlet and outlet of the evaporator body.

[0007] Compared with the prior art, the utility model has the following beneficial effects: the evaporator is limitedly clamped by two clamping arms to prevent the evaporator from shaking left and right, and it is stably fixed on the operating table, and the operating table and the evaporator are pushed by the driving member to slide toward the docking assembly until the inlet and outlet of the evaporator are docked with the docking assembly to a sealed state, and the docking assembly is connected to the external airtightness detection equipment. After the docking is completed, the evaporator can be pressure tested. During the docking process, since the evaporator is pushed forward and docked with the docking assembly by the driving member, the thrust of the driving member and the reaction force of the docking assembly are parallel to each other. In this state, the problem of poor sealing of the docking due to insufficient docking force is avoided, which affects the detection quality.

[0008] Preferably, a T-shaped slot is provided on the mounting table, and a T-shaped block is provided on the operating table, and the T-shaped block is slidably arranged in the T-shaped slot.

[0009] Preferably, the driving member includes a cylinder and a push plate arranged at the output end of the cylinder, and a fixing seat is provided at the end of the mounting platform, and the cylinder is arranged on the fixing seat.

[0010] Preferably, a through slot is provided on the mounting platform, the lower ends of the two clamping arms are slidably arranged in the through slot, the bidirectional stud is located in the through slot, and both ends of the bidirectional stud are respectively threadedly connected to the two clamping arms.

[0011] Preferably, each clamping arm is rotatably provided with a clamping roller, and the clamping roller is sleeved with a rubber sleeve.

[0012] Preferably, the docking assembly includes a mounting base fixedly arranged on one end of the mounting platform away from the fixed seat, and a ventilation plug and a plug arranged on the mounting base, wherein a travel groove is opened on the mounting base, a screw is rotatably arranged in the travel groove, and the plug is slidably arranged in the travel groove and is threadedly connected to the screw.

[0013] Preferably, rubber pads are provided on both the operating table and the push plate.

[0014] Preferably, the operating table is provided with scale lines at one end close to the cylinder and along the moving direction of the clamping arm. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of an embodiment of the present utility model.

[0016] Figure 2 This is a schematic diagram of the explosion structure of an embodiment of the utility model.

[0017] Figure 3 Schematic diagram of the structure of the clamping member in the embodiment of the present utility model.

[0018] Figure 4 Schematic diagram of the structure of the docking assembly in the embodiment of the present utility model.

[0019] In the above drawings: 1. Mounting table; 100. Evaporator body; 101. Base; 102. T-slot; 103. Fixing seat; 2. Cylinder; 201. Push plate; 3. Clamping arm; 301. Clamping roller; 302. Rubber sleeve; 303. Two-way stud; 4. Mounting seat; 401. Ventilation plug; 402. Plug; 403. Travel groove; 404. Screw; 5. Operating table; 501. T-block; 502. Through slot; 503. Scale line; 504. Rubber pad. DETAILED DESCRIPTION

[0020] The technical solution of the present invention is further described below with reference to the accompanying drawings and embodiments.

[0021] like Figures 1 to 4 As shown, an embodiment of the present utility model proposes an automobile air-conditioning evaporator air-tightness detection device, which includes a mounting platform 1 with bases 101 provided at the four corners of the bottom side; a control component, including an operating table 5 slidably arranged on the mounting platform 1 and a driving member arranged at one end of the mounting platform 1 for pushing the operating table 5 to slide; a clamping member, including two clamping arms 3 movably arranged on the operating table 5, and a bidirectional stud 303 rotatably arranged on the operating table 5 and respectively threadedly connected to the two clamping arms 3, the bidirectional stud 303 is used to drive the two clamping arms 3 to move closer to or away from each other, and the two clamping arms 3 are used to clamp the evaporator body 100; a docking component, arranged at one end of the mounting platform 1 away from the driving member, for docking the inlet and outlet of the evaporator body 100.

[0022] The detailed working process of this embodiment is as follows: the base 101 is used to support the mounting platform 1, and the bidirectional stud 303 is used to drive the two clamping arms 3 to move closer to or away from each other to clamp evaporators of different specifications.

[0023] The evaporator is limited and clamped by two clamping arms 3 to prevent the evaporator from shaking left and right, and it is stably fixed on the operating table 5. The operating table 5 and the evaporator are pushed to slide toward the docking assembly by the driving member until the inlet and outlet of the evaporator are docked with the docking assembly to a sealed state. The docking assembly is connected to the external airtightness detection equipment. After the docking is completed, the evaporator can be pressure tested. During the docking process, since the evaporator is pushed forward and docked with the docking assembly by the driving member, the thrust of the driving member and the reaction force of the docking assembly are parallel to each other. In this state, the problem of poor sealing of the docking due to insufficient docking force is avoided, which affects the detection quality.

[0024] like Figure 2 As shown, a T-shaped slot 102 is provided on the mounting platform 1 , and a T-shaped block 501 is provided on the operating platform 5 , and the T-shaped block 501 is slidably provided in the T-shaped slot 102 .

[0025] The detailed working process of this embodiment is as follows: under the arrangement of the T-slot 102 and the T-block 501 , the operating table 5 can slide along the T-slot 102 on the mounting table 1 .

[0026] like Figure 1 and Figure 2 As shown, the driving member includes a cylinder 2 and a push plate 201 arranged at the output end of the cylinder 2 , a fixing seat 103 is provided at the end of the mounting platform 1 , and the cylinder 2 is arranged on the fixing seat 103 .

[0027] The detailed working process of this embodiment is as follows: under the setting of the cylinder 2 and the push plate 201, the push plate 201 can be pushed toward the docking assembly through the cylinder 2. When the evaporator is placed on the operating table 5, the push plate 201 contacts the evaporator and pushes the evaporator and the operating table 5 to slide toward the docking assembly, so that the docking assembly docks with the inlet and outlet of the evaporator body 100.

[0028] like Figure 3 As shown, a through slot 502 is provided on the mounting platform 1 , the lower ends of the two clamping arms 3 are slidably arranged in the through slot 502 , the bidirectional stud 303 is located in the through slot 502 , and both ends of the bidirectional stud 303 are threadedly connected to the two clamping arms 3 respectively.

[0029] The detailed working process of this embodiment is as follows: the two clamping arms 3 can move along the direction of the through slot 502 , and the two clamping arms 3 can be adjusted to move away from or closer to each other along the direction of the through slot 502 by rotating the bidirectional stud 303 .

[0030] like Figure 2 As shown, each clamping arm 3 is rotatably provided with a clamping roller 301 , and the clamping roller 301 is sleeved with a rubber sleeve 302 .

[0031] The detailed working process of this embodiment is as follows: The clamping roller 301 is used to prevent scratches on the evaporator due to friction during installation or removal. During installation and removal, the sliding friction of the evaporator is converted to rolling friction, reducing friction damage. Simultaneously, with the clamping roller 301, when testing evaporators of the same specification, the evaporator can be directly clamped between the two clamping arms 3, reducing the number of times the two-way stud 303 is rotated to adjust the two clamping arms 3, thereby improving testing efficiency. Furthermore, with the rubber sleeve 302, direct hard contact between the clamping roller 301 and the evaporator is avoided, which could cause damage to the evaporator.

[0032] like Figure 4 As shown, the docking assembly includes a mounting base 4 fixedly arranged at one end of the mounting platform 1 away from the fixed base 103, and a ventilation plug 401 and a plug 402 arranged on the mounting base 4, wherein a travel groove 403 is opened on the mounting base 4, a screw 404 is rotatably arranged in the travel groove 403, and the plug 402 is slidably arranged in the travel groove 403 and is threadedly connected to the screw 404.

[0033] The detailed working process of this embodiment is as follows: one end of the ventilation plug 401 is connected to the external air tightness detection equipment, and the other end is abutted and sealed against the inlet end of the evaporator; the plug 402 is used to connect to the outlet end of the evaporator to block it and avoid air leakage, which causes inaccurate detection results. At the same time, the plug 402 can be adjusted by the screw 404. The screw 404 is rotated to adjust the relative position of the plug 402 and the ventilation plug 401 to adapt to different evaporator inlet and outlet ends, so that the ventilation plug 401 and the plug 402 can accurately connect to the evaporator outlet end.

[0034] like Figure 3 As shown, rubber pads 504 are provided on the operating platform 5 and the push plate 201 .

[0035] The detailed working process of this embodiment is as follows: The function of the rubber pad 504 is to protect the evaporator and prevent the evaporator from being damaged due to hard friction.

[0036] like Figure 3 As shown, a scale line 503 is provided at one end of the operating platform 5 close to the cylinder 2 and along the moving direction of the clamping arm 3.

[0037] The detailed working process of this embodiment is as follows: the function of the scale line 503 is to adjust the two clamping arms 3 according to the size of the evaporator.

[0038] The implementation principle of the embodiment of the present application is: first, the evaporator is placed on the operating table 5, and then the two-way stud 303 is controlled to drive the two clamping arms 3 to approach each other and clamp the evaporator, and then the cylinder 2 is controlled to push the push plate 201, the push plate 201 contacts the evaporator, and pushes the evaporator and the operating table 5 to slide toward the docking assembly, so that the ventilation plug 401 and the plug 402 in the docking assembly are docked with the inlet and outlet of the evaporator body 100, so that the evaporator is in a sealed state, and one end of the ventilation plug 401 is connected to the external airtightness detection equipment. After the docking is completed, the external airtightness detection equipment can perform airtightness detection on the evaporator.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and are not limiting. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. An automobile air-conditioning evaporator air tightness detection device, characterized in that: include: The mounting platform (1) is provided with bases (101) at the four corners of the bottom side; A control assembly comprises an operating table (5) slidably arranged on the mounting table (1) and a driving member arranged at one end of the mounting table (1) for pushing the operating table (5) to slide; A clamping member comprises two clamping arms (3) movably arranged on the operating table (5), and a bidirectional stud (303) rotatably arranged on the operating table (5) and respectively threadedly connected to the two clamping arms (3), wherein the bidirectional stud (303) is used to drive the two clamping arms (3) to move closer to or farther from each other, and the two clamping arms (3) are used to clamp the evaporator body (100); A docking assembly is arranged at an end of the mounting platform (1) away from the driving member and is used for docking the inlet and outlet of the evaporator body (100).

2. The automobile air conditioner evaporator air tightness detection device according to claim 1, characterized in that: A T-shaped slot (102) is provided on the mounting platform (1), and a T-shaped block (501) is provided on the operating platform (5). The T-shaped block (501) is slidably arranged in the T-shaped slot (102).

3. The automobile air conditioner evaporator air tightness detection device according to claim 1, characterized in that: The driving member comprises a cylinder (2) and a push plate (201) arranged at the output end of the cylinder (2); a fixing seat (103) is provided at the end of the mounting platform (1); and the cylinder (2) is arranged on the fixing seat (103).

4. The automobile air conditioner evaporator air tightness detection device according to claim 3, characterized in that: A through slot (502) is provided on the mounting platform (1), the lower ends of the two clamping arms (3) are slidably arranged in the through slot (502), the bidirectional stud (303) is located in the through slot (502), and the two ends of the bidirectional stud (303) are respectively threadedly connected to the two clamping arms (3).

5. The automobile air-conditioning evaporator air-tightness detection device according to claim 4, characterized in that: A clamping roller (301) is rotatably provided on each clamping arm (3), and a rubber sleeve (302) is sleeved on each clamping roller (301).

6. The automobile air conditioner evaporator air tightness detection device according to claim 3, characterized in that: The docking assembly comprises a mounting seat (4) fixedly arranged at one end of the mounting platform (1) away from the fixing seat (103), and a vent plug (401) and a plug (402) arranged on the mounting seat (4), wherein a travel groove (403) is provided on the mounting seat (4), a screw (404) is rotatably arranged in the travel groove (403), and the plug (402) is slidably arranged in the travel groove (403) and is threadedly connected to the screw (404).

7. The automobile air conditioner evaporator air tightness detection device according to claim 3, characterized in that: The operating platform (5) and the push plate (201) are both provided with rubber pads (504).

8. The automobile air conditioner evaporator air tightness detection device according to claim 3, characterized in that: The operating platform (5) is provided with a scale line (503) close to one end of the cylinder (2) and along the movement direction of the clamping arm (3).

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