Helium detection test fixture for new energy automobile controller shell

Abstract

The utility model relates to a helium detection test fixture for a new energy automobile controller shell, which specifically structurally comprises a fixture base and a fixture upper end seat arranged on the fixture base, a plurality of elastic alignment parts extend out of the fixture upper end seat, each elastic alignment part comprises an alignment end and an alignment rod, a spring is fixedly connected to the outer side of each alignment rod, and the elastic alignment parts are arranged on the fixture upper end seat. The diameter of the alignment rod is smaller than that of the alignment end, an elastic pressing piece further extends out of the clamp upper end base and comprises an elastic pressing head, the diameter of the elastic pressing head is larger than that of the alignment end, a spring is fixedly connected to the tail end of the elastic pressing head, and the multiple positioning and clamping effects are achieved by arranging a plurality of pressing and clamping structures.

Description

Technical Field

[0001] The utility model relates to the technical field of helium detection, in particular to a helium detection test fixture for a shell of a new energy vehicle controller. Background Technique

[0002] Helium detection is a testing method. After evacuating the workpiece to be tested, helium gas with a certain pressure is filled. Outside the workpiece to be tested is a vacuum chamber with certain vacuum degree requirements, and the vacuum chamber is connected to the leakage detection port of a helium mass spectrometer leak detector.

[0003] In the existing helium detection process, it is necessary to place the product in a helium gas detection mechanism for fixation and extract the internal gas, so as to create a vacuum and a space filled only with helium gas. Through the flow of pressure gas caused by different gas densities, the airtightness of the sheet metal part is verified. In such a helium gas detection mechanism, a vacuum chamber capable of placing the sheet metal part will be added, and the helium gas detection of the sheet metal part can be carried out in the vacuum chamber, playing the role of placement and sealing.

[0004] In the helium detection process, the helium gas detection mechanism with a portable vacuum chamber needs to place the sheet metal part inside the vacuum chamber and fix it. There is only a single positioning pin for fixation in the existing vacuum chamber. Since the surface shape of the sheet metal part to be detected is complex, generally, multiple positions need to be pressed and fixed. The single positioning pin cannot completely fix the sheet metal part to be detected. The poorly fixed sheet metal part will have a reduced effect during vacuum extraction, resulting in errors in airtightness detection. Therefore, the existing helium detection mechanism has the problem of insufficient fixing ability of the positioning fixture. Content of the Utility Model

[0005] The purpose of the utility model is to set positioning fixtures in multiple positions and multiple directions, which can elastically press and fix the surface of the sheet metal part in multiple directions, improving the clamping stability.

[0006] To achieve the above purpose, the utility model provides the following technical solution: including a fixture base and a fixture upper seat arranged on the fixture base. Several elastic alignment parts protrude from the fixture upper seat. The elastic alignment part includes an alignment end and an alignment rod. A spring is fixedly connected to the outside of the alignment rod. The diameter of the alignment rod is smaller than the diameter of the alignment end. An elastic pressing part also protrudes from the fixture upper seat. The elastic pressing part includes an elastic pressing head. The diameter of the elastic pressing head is larger than the diameter of the alignment end. A spring is also fixedly connected to the end of the elastic pressing head.

[0007] Preferably, a fitting pressing part is also fixedly connected to the fixture upper seat. The fitting pressing part includes a fitting pressing head. A fitting opening is formed on the fitting pressing head. A spring is fixedly connected to the end of the fitting pressing head. Two fitting pressing rods are fixedly connected inside the spring.

[0008] Preferably, a positioning opening is provided on the upper seat of the fixture. Positioning members are fixedly connected around the positioning opening, and positioning ports for inserting the positioning members are provided on the surface of the upper positioning seat.

[0009] Preferably, a fixture placement groove is provided on the fixture base. A fixture positioning groove is provided at the edge of the fixture placement groove, and a fixture positioning port is provided in the fixture positioning groove.

[0010] Preferably, a sliding telescopic rod is slidably connected between the upper seat of the fixture and the fixture base. The telescopic end of the sliding telescopic rod is fixedly connected to the bottom surface of the upper seat of the fixture.

[0011] The beneficial effects of the present utility model are as follows:

[0012] 1. By providing a fixture on the upper seat, it has multifunctional clamping functions such as pressing and fitting on the upper seat, improving the clamping stability.

[0013] 2. By providing a fixture placement groove and positioning ports in the fixture placement groove, it can position and fix from the bottom surface of the sheet metal part, improving the positioning stability at the center of gravity of the sheet metal part. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic structural diagram of a helium detection fixture for a new energy vehicle controller housing of the present utility model;

[0015] Figure 2 It is a schematic structural diagram of a part of the present utility model Figure 1 ;

[0016] Figure 3 It is a schematic structural diagram of a part of the present utility model Figure 2 。

[0017] In the figure:

[0018] 1. Fixture base; 11. Fixture placement groove; 12. Fixture positioning groove; 121. Fixture positioning port; 13. Sliding telescopic rod;

[0019] 2. Upper seat of the fixture; 21. Elastic alignment member; 211. Alignment end; 212. Alignment rod; 213. Spring; 22. Elastic pressing member; 221. Elastic pressing head; 23. Embedding and pressing member; 231. Embedding and pressing head; 232. Embedding and pressing port; 233. Embedding and pressing rod; 24. Positioning opening; 25. Positioning member; 26. Positioning port. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] In order to make the objectives, technical solutions and advantages of the present utility model more clear and understandable, the following further details the present utility model in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0021] Referring to Figures 1-3 , a symmetrically arranged fixture base 1 and a fixture upper seat 2 are provided. The fixture base 1 is fixed at the bottom of the vacuum chamber as the bottom of the fixture, and the fixture upper seat 2 is slidably connected above the vacuum chamber and is connected to the top surface that can close the top of the vacuum chamber.

[0022] Referring to Figures 1-3 , several elastic alignment members 21 protrude from the fixture upper seat 2. The elastic alignment members 21 can cooperate with the surface of the sheet metal part to be processed and abut against the flat surface of the sheet metal part. The elastic alignment members 21 include alignment ends 211 and alignment rods 212. A spring 213 is fixedly connected to the outside of the alignment rod 212. The spring 213 is used to buffer the elastic force and can achieve a pressing effect. The diameter of the alignment rod 212 is smaller than the diameter of the alignment end 211, so that the spring 213 will not increase the cross-sectional area outside the alignment rod 212 and affect the installation. An elastic pressing member 22 also protrudes from the fixture upper seat 2. The elastic pressing member 22 includes an elastic pressing head 221. The diameter of the elastic pressing head 221 is larger than the diameter of the alignment end 211. A spring 213 is also fixedly connected to the end of the elastic pressing head 221. The elastic pressing head 221 can press on a larger area of the flat surface of the sheet metal part to achieve the effect of fixing the sheet metal part to be processed.

[0023] Referring to Figures 1-3 , a fitting pressing member 23 is also fixedly connected to the fixture upper seat 2. The fitting pressing member 23 includes a fitting pressing head 231. A fitting opening is provided on the fitting pressing head 231. The fitting pressing member 23 can cooperate and fit with the socket on the surface of the sheet metal part through the fitting opening to achieve the effect of wrapping and fixing, and the fitting method can be used for fixing. A spring 213 is fixedly connected to the end of the fitting pressing head 231. Two fitting pressing rods 233 are fixedly connected inside the spring 213. During fitting, the fitting head can elastically displace on the two fitting pressing rods 233 through the two springs 213, so as to achieve a buffering effect.

[0024] Referring to Figures 1-3, a positioning opening 24 is formed on the upper fixture seat 2. Positioning members 25 are fixedly connected around the positioning opening 24. A positioning port for inserting the positioning members 25 is formed on the surface of the upper positioning seat. The positioning members 25 can position the right-angle of the upper fixture seat 2 to ensure the accuracy of the position during vertical movement. A fixture placement groove 11 is formed on the fixture base 1. A fixture positioning groove 12 is formed at the edge of the fixture placement groove 11. A fixture positioning port 121 is formed in the fixture positioning groove 12. A sheet metal part can be placed in the fixture placement groove 11, and the fixing threaded port on the surface of the sheet metal part is fixedly connected to the fixture positioning port 121 through a bolt to further strengthen the fixing effect of the sheet metal part.

[0025] Reference Figures 1-3 , a sliding telescopic rod 13 is slidably connected between the upper fixture seat 2 and the fixture base 1. The telescopic end of the sliding telescopic rod 13 is fixedly connected to the bottom surface of the upper fixture seat 2, which can enable the upper fixture seat 2 to slide in the vertical direction to achieve the clamping effect of the sealed box.

[0026] The working principle of this mechanism is as follows: When performing the fixing operation before the helium leak detection process on the sheet metal part, place the sheet metal part in the fixture placement groove 11, and pair and thread-connect the threaded port on the surface of the sheet metal part and the fixture positioning port 121 through a bolt. At this time, respectively connect the elastic alignment member 21, the elastic pressing member 22, and the fitting pressing member 23 to the smaller-area plane, the larger-area plane, and the protruding fitting part on the surface of the sheet metal part respectively to form three different modes of fixing effects. After fixing, control the opening and closing of the upper fixture seat 2 through the sliding telescopic rod 13, so as to control the opening and closing of the vacuum box and the switching of the clamping state, forming an enhanced effect of fixing the sheet metal part during helium leak detection.

[0027] The above embodiments are used to further illustrate the present invention, but do not limit the present invention to these specific embodiments. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be understood to be within the protection scope of the present invention.

Claims

1. A helium detection test fixture for a new energy vehicle controller housing, characterized in that: It includes a fixture base (1) and a fixture upper seat (2) arranged on the fixture base (1). Several elastic alignment members (21) protrude from the fixture upper seat (2). The elastic alignment member (21) includes an alignment end (211) and an alignment rod (212). A spring (213) is fixedly connected to the outer side of the alignment rod (212). The diameter of the alignment rod (212) is smaller than the diameter of the alignment end (211). An elastic pressing member (22) also protrudes from the fixture upper seat (2). The elastic pressing member (22) includes an elastic pressing head (221). The diameter of the elastic pressing head (221) is larger than the diameter of the alignment end (211). A spring (213) is also fixedly connected to the end of the elastic pressing head (221).

2. The helium detection test fixture for the controller housing of a new energy vehicle according to claim 1, characterized in that: A fitting pressing member (23) is also fixedly connected to the fixture upper seat (2). The fitting pressing member (23) includes a fitting pressing head (231). A fitting opening is formed in the fitting pressing head (231). A spring (213) is fixedly connected to the end of the fitting pressing head (231). Two fitting pressing rods (233) are fixedly connected inside the spring (213).

3. The helium detection test fixture for the controller housing of a new energy vehicle according to claim 1, characterized in that: A positioning opening (24) is formed in the fixture upper seat (2). Positioning members (25) are fixedly connected around the positioning opening (24). A positioning opening (26) for inserting the positioning member (25) is formed on the surface of the positioning upper seat.

4. A helium detection test fixture for a new energy vehicle controller housing according to claim 1, characterized in that: A fixture placement groove (11) is formed in the fixture base (1). A fixture positioning groove (12) is formed at the edge of the fixture placement groove (11). A fixture positioning opening (121) is formed in the fixture positioning groove (12).

5. A helium detection test fixture for a new energy vehicle controller housing according to claim 1, characterized in that: A sliding telescopic rod (13) is slidably connected between the fixture upper seat (2) and the fixture base (1). The telescopic end of the sliding telescopic rod (13) is fixedly connected to the bottom surface of the fixture upper seat (2).

Images