A thermostat seat plane connection end airtight fixture

Abstract

The utility model provides an airtight clamp for the plane connection end of a thermostat seat, comprising: a tooling plate; the bottom of an L-shaped adjustment frame is connected and arranged on the top of the tooling plate by bolts, a front and rear adjustment threaded hole is penetrated in the middle of the top of the L-shaped adjustment frame, and a pushing module is penetrated in the front and rear adjustment threaded hole; an airtight connection detection head is arranged on a side of the pushing module away from the L-shaped adjustment frame by welding, and gas is injected into an air inlet nozzle in the airtight connection detection head during detection, and after the gas enters the product cavity, if there are problems such as looseness and shrinkage holes in the screw hole, resulting in the screw hole and the inside of the thermostat seat being connected, the gas will be discharged through the vent pin, and it can be clearly seen that the air pipe connected to the vent pin stuck in the bad thread is bulging, and if the thermostat seat connected to the detection pressure plate has poor flatness, a large number of bubbles will appear on the left or right side of the detection pressure plate, and it can be relatively intuitive to judge whether the airtightness of the plane side of the thermostat seat with a pair of through holes symmetrically opened is qualified.

Description

Technical Field

[0001] The utility model relates to the field of air tightness detection, in particular to the technical field of air tightness of plane ends connected by bolts, and specifically is an air tightness clamp for the plane connection end of a thermostat seat. Background Art

[0002] When a thermostat seat is tested for tightness by a water immersion test, one side of the thermostat seat is Figure 4 The figure shows a plane, with a pair of through holes symmetrically opened on the left and right sides of the plane, which are connected to the inside of the thermostat seat, and threaded holes are arranged around the plane on the outside of the thermostat seat, which are not connected to the inside of the thermostat seat. Therefore, what needs to be tested when simulating the installation is the air tightness of the overall side plane, which is reflected in the overall parallelism of the side plane, and whether the threaded holes are loose, have shrinkage holes, and other undesirable conditions, resulting in a loose fit between the actual installation surface and the installation surface and a sealing problem. Therefore, the best sealing method is to simulate the connection method during actual use and set a sealed detection pressure plate on the side through bolts. However, during the test, it was found that the air vents in the other directions of the thermostat seat were directly blocked or there were cracks on the surface of the thermostat seat. In the water immersion test, large bubbles appeared and were very obvious. However, if there is a problem with the thread, small bubbles will appear on one side of the sealed detection pressure plate, and the speed at which water penetrates into the cavity is very slow, and no leakage problem can be observed. Summary of the invention

[0003] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide an airtight clamp for the plane connection end of a thermostat seat, so as to solve the difficulties of the prior art.

[0004] In order to achieve the above-mentioned purpose and other related purposes, the utility model provides an airtight fixture for the plane connection end of a thermostat seat, comprising:

[0005] Tooling board 1;

[0006] An L-shaped adjustment frame 11, the bottom of which is connected to the top of the tooling plate 1 by bolts, a front and rear adjustment threaded hole 12 is penetrated in the middle of the top of the L-shaped adjustment frame 11, and a push module 2 is penetrated in the front and rear adjustment threaded hole 12;

[0007] The airtight connection detection head 3 is arranged on a side of the pushing module 2 away from the L-shaped adjustment frame 11 by welding.

[0008] According to a preferred embodiment, a reinforcing rib 13 is provided on one side of the tooling plate 1 .

[0009] According to a preferred embodiment, the pushing module 2 comprises:

[0010] A threaded rod 21, wherein the center of the threaded rod 21 is threadedly inserted into the front and rear adjustment threaded holes 12, and the left and right sides of the threaded rod 21 extend straightly away from the L-shaped adjustment frame 11;

[0011] A nut 22, one side of which is sleeved on the left or right side of the threaded rod 21 by welding, a driving hole 23 is opened in the middle of the other side of the nut 22, and a rotation adjustment rod 24 is passed through the middle of the driving hole 23;

[0012] A clamp head 25, wherein the clamp head 25 is arranged on a side of the threaded rod 21 away from the nut 22, and the outer diameter of the side of the clamp head 25 close to the threaded rod 21 is smaller than the outer diameter of the other side;

[0013] The sleeve shell 26 is sleeved on the outside of the clamp head 25 , and grease is injected between the inner wall of the sleeve shell 26 and the outer wall of the clamp head 25 .

[0014] According to a preferred solution, the clamping head 25 and the threaded rod 21 are integrally arranged.

[0015] According to a preferred solution, the rotation adjustment rod 24 is manually rotated, and the rotation adjustment rod 24 drives the threaded rod 21 to rotate so that the sleeve shell 26 moves left and right.

[0016] According to a preferred embodiment, the airtight connection detection head 3 comprises:

[0017] A detection pressure plate 31, which is arranged on a side of the casing 26 away from the threaded rod 21 by welding;

[0018] A connecting hole 32, wherein the connecting hole 32 is provided around the detection platen 31, wherein the hole diameter of the connecting hole 32 on one side close to the threaded rod 21 is larger than the hole diameter of the other side, and a vent pin 33 is inserted into the connecting hole 32;

[0019] The air injection hole 34 is opened in the center of the detection pressure plate 31 and is located on the left or right side of the sleeve shell 26. An air inlet nozzle 35 is provided in the air injection hole 34 through interference fit.

[0020] The utility model adopts a tooling plate, an L-shaped adjustment frame, a pushing module and an airtight connection detection head. During detection, gas is injected into the air inlet nozzle. After the gas enters the product cavity, if there are looseness and shrinkage holes in the screw holes, which cause the screw holes to communicate with the inside of the thermostat seat, the gas will be discharged through the vent pin. It can be obviously seen that the air pipe connected to the vent pin stuck in the bad thread is bulging, and if the thermostat seat connected to the detection pressure plate has poor flatness, a large number of bubbles will appear on the left or right side of the detection pressure plate, so it can be relatively intuitive to judge whether the air tightness of the plane side of the thermostat seat with a pair of through holes symmetrically opened is qualified.

[0021] The best embodiment of the present invention will be described in more detail below in conjunction with the accompanying drawings so that the features and advantages of the present invention can be easily understood. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The display is a three-dimensional structural schematic diagram of the utility model;

[0023] Figure 2 Shown is a three-dimensional structural schematic diagram of another viewing angle of the utility model;

[0024] Figure 3 Shown is an enlarged schematic diagram of the three-dimensional structure of the connection hole and the gas injection hole in the utility model;

[0025] Figure 4 Shown is a three-dimensional structural schematic diagram of a thermostat seat required for detection in the present invention.

[0026] Description of symbols

[0027] 1. Tooling plate; 11. L-shaped adjustment bracket; 12. Front and rear adjustment threaded holes; 13. Reinforcement ribs;

[0028] 2. Pushing die set; 21. Threaded rod; 22. Nut; 23. Driving hole; 24. Rotating adjustment rod; 25. Chuck; 26. Housing;

[0029] 3. Air tightness connection detection head; 31. Detection pressure plate; 32. Connection hole; 33. Ventilation pin; 34. Air injection hole; 35. Air inlet nozzle; DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the technical solution of the utility model clearer, the technical solution of the embodiment of the utility model will be clearly and completely described in conjunction with the drawings of the specific embodiments of the utility model. The same figure marks in the drawings represent the same parts. It should be noted that the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the described 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.

[0031] Compared with the embodiments shown in the drawings, feasible implementations within the scope of protection of the present invention may have fewer components, other components not shown in the drawings, different components, differently arranged components, or differently connected components, etc. In addition, two or more components in the drawings may be implemented in a single component, or a single component shown in the drawings may be implemented as multiple separate components.

[0032] Unless otherwise defined, the technical terms or scientific terms used herein shall have the usual meanings understood by persons with ordinary skills in the field to which the utility model belongs. The words "first", "second" and similar words used in the specification and claims of the utility model patent application do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one" or "one" do not necessarily indicate quantity restrictions. Words such as "include" or "comprise" mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0033] The utility model provides an airtight fixture for the plane connection end of a thermostat seat, which is used in the airtightness detection process. The structure of the fixture plate 1, L-shaped adjustment frame 11, pushing module 2 and airtightness connection detection head 3 is particularly suitable for airtightness detection of the plane end connected by bolts.

[0034] In general, the thermostat seat plane connection end airtight fixture proposed in the utility model mainly includes: a tooling plate 1, an L-shaped adjustment frame 11, a push module 2 and an airtight connection detection head 3, wherein, it can be seen that Figure 1 , which shows the arrangement relationship of the tooling plate 1, the L-shaped adjustment frame 11, the pushing module 2 and the airtight connection detection head 3.

[0035] The thermostat seat plane connection end airtightness fixture proposed in the utility model can be a part of the thermostat seat airtightness detection tooling. The thermostat seat plane connection end airtightness fixture proposed in the utility model is aimed at having Figure 4 The side shown is a plane, a pair of through holes are opened in the middle of the plane, the through holes are connected to the inside of the thermostat seat, and threaded holes are arranged on the outside of the thermostat seat around the plane. The thermostat seat design with the technical feature that the threaded holes are not connected to the inside of the thermostat seat needs to be set on the thermostat seat airtightness detection tooling designed for unrestricted models in actual use. The above-described parts will be removed according to the thermostat model. Figure 4 The thermostat seat technical feature plane is shown in the figure. By setting a corresponding height bracket and installing a horizontal clamp with a plug on the bracket, all the vents set in other directions are blocked by the plug. When the thermostat seat plane connection end airtight clamp proposed by the utility model is used, the adjustment rod 24 is rotated to rotate the threaded rod 21 to drive the detection pressure plate 31 to press the plane to be detected, and the ventilation pin 33 is inserted into the connection hole 32. Figure 4 The bottom of the threaded hole to be tested is shown in the figure. It should be noted that the outer diameter of the selected vent pin 33 needs to be the same as the minimum inner diameter of the threaded hole to be tested. Then, the air inlet nozzle 35 is inserted into the air injection hole 34. It should be noted that the bottom of the air inlet nozzle 35 needs to be the same as the inner diameter of the threaded hole to be tested. Figure 4 The through hole shown in the figure is connected to the inside of the thermostat seat, and then the vent pin 33, the air inlet nozzle 35 and the top are connected to the air pipe in turn. It should be noted that the air pipe connected to the vent pin 33 is an exhaust pipe, so that the vent pin 33 forms a negative pressure in the threaded hole to be tested. Compared with the advantage of directly tightening the bolt, this connection method will not cause the threaded hole to be tested of the product to be worn. The above-mentioned installed thermostat seat to be tested is directly immersed in water with the tooling, and gas is injected into the air inlet nozzle 35. After the gas enters the product cavity, if there is looseness or shrinkage in the screw hole, resulting in the threaded hole being connected to the inside of the thermostat seat, the gas will be discharged through the vent pin. It can be clearly seen that the air pipe connected to the vent pin 33 stuck in the bad thread is bulging, and if the thermostat seat has a poor flatness, a large number of bubbles will appear on the left or right side of the detection plate 31.

[0036] The bottom of the L-shaped adjustment frame 11 is connected to the top of the tooling plate 1 by bolts, and a front and rear adjustment threaded hole 12 is provided in the middle of the top of the L-shaped adjustment frame 11, which is set according to the height of the side of the thermostat seat to be connected.

[0037] The above-mentioned pushing mold group 2 is inserted into the front and rear adjustment threaded hole 12, and the pushing mold group 2 includes: a threaded rod 21, a nut 22, a clamp head 25 and a sleeve shell 26, wherein the center of the threaded rod 21 is inserted into the front and rear adjustment threaded hole 12 through threaded cooperation, and the left and right sides of the threaded rod 21 extend straight in the direction away from the L-shaped adjustment frame 11, and a nut 22 is sleeved on one side of the threaded rod 21 by welding, and a driving hole 23 is opened in the center of the other side of the nut 22, and a rotating An adjusting rod 24 is provided with a chuck 25 on the side of the threaded rod 21 away from the nut 22. The chuck 25 is integrally provided with the threaded rod 21. The outer diameter of the chuck 25 on the side close to the threaded rod 21 is smaller than the outer diameter on the other side. A sleeve 26 is sleeved on the outer side of the chuck 25. When the chuck 25 rotates with the threaded rod 21, the sleeve 26 will not drive the detection plate 31 to rotate. Grease is injected between the inner wall of the sleeve 26 and the outer wall of the chuck 25. The grease is waterproof and enables the chuck 25 to rotate smoothly in the sleeve 26.

[0038] The above-mentioned airtight connection detection head 3 is arranged on the side of the pushing module 2 away from the L-shaped adjustment frame 11 by welding, and the airtight connection detection head 3 includes: a detection pressure plate 31, a connecting hole 32, an air injection hole 34 and an air inlet nozzle 35, wherein the detection pressure plate 31 is arranged on the side of the casing 26 away from the threaded rod 21 by welding, and connecting holes 32 are opened around the detection pressure plate 31. The aperture of the connecting hole 32 on the side close to the threaded rod 21 is larger than the aperture of the other side. A ventilation pin 33 is passed through the connecting hole 32, and an air injection hole 34 is opened in the center of the detection pressure plate 31 on the left or right side of the casing 26, and an air inlet nozzle 35 is provided in the air injection hole 34 by interference fit.

[0039] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. An airtight fixture for the plane connection end of a thermostat seat, characterized in that: include: Tooling plate (1); An L-shaped adjustment frame (11), wherein the bottom of the L-shaped adjustment frame (11) is connected to the top of the tooling plate (1) by bolts, a front and rear adjustment threaded hole (12) is provided in the middle of the top of the L-shaped adjustment frame (11), and a push mold group (2) is provided in the front and rear adjustment threaded hole (12); An airtight connection detection head (3) is arranged on a side of the pushing module (2) away from the L-shaped adjustment frame (11) by welding.

2. The thermostat seat plane connection end airtight fixture according to claim 1, characterized in that: A reinforcing rib (13) is provided on one side of the tooling plate (1).

3. The thermostat seat plane connection end airtight fixture according to claim 2, characterized in that: The pushing mold assembly (2) comprises: A threaded rod (21), wherein the center of the threaded rod (21) is threadably inserted into the front and rear adjustment threaded holes (12), and the left and right sides of the threaded rod (21) extend straightly in a direction away from the L-shaped adjustment frame (11); A nut (22), one side of the nut (22) is sleeved on the left side or the right side of the threaded rod (21) by welding, a driving hole (23) is opened in the middle of the other side of the nut (22), and a rotating adjustment rod (24) is passed through the middle of the driving hole (23); A chuck (25), wherein the chuck (25) is arranged on a side of the threaded rod (21) away from the nut (22), and the outer diameter of the side of the chuck (25) close to the threaded rod (21) is smaller than the outer diameter of the other side; The sleeve shell (26) is sleeved on the outside of the chuck (25), and lubricating grease is injected between the inner wall of the sleeve shell (26) and the outer wall of the chuck (25).

4. The thermostat seat plane connection end airtight fixture according to claim 3, characterized in that: The clamping head (25) and the threaded rod (21) are integrally arranged.

5. The thermostat seat plane connection end airtight fixture according to claim 4, characterized in that: The airtight connection detection head (3) comprises: A detection pressure plate (31), wherein the detection pressure plate (31) is arranged on a side of the casing (26) away from the threaded rod (21) by welding; A connecting hole (32), wherein the connecting hole (32) is formed around the detection pressure plate (31), the hole diameter of the connecting hole (32) on one side close to the threaded rod (21) is larger than the hole diameter of the other side, and a vent pin (33) is inserted into the connecting hole (32); An air injection hole (34) is provided in the center of the detection pressure plate (31) and is located on the left or right side of the sleeve shell (26). An air inlet nozzle (35) is provided in the air injection hole (34) in an interference fit.

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