A plugging structure for a shell with a complex structure with multiple cavities

Abstract

The utility model provides a plugging structure for a housing with a complex structure of multiple cavities, which is used to solve the technical problem that the existing ordinary fixture lacks a corresponding plugging structure for the small diameter light hole and the concave screw hole on the gearbox housing. The utility model includes three sealing components, namely, end face sealing, radial sealing and small hole sealing, which respectively block and detect the outer end face, cylinder hole and small holes on the outer end face of the housing; the problem of blocking and detecting the small diameter light hole can be solved by cooperating with the bridge and the pressing part; the second screw is used to cooperate with the fixed groove to achieve effective blocking of the concave screw hole on the outer end face of the housing, solve the problem of watertight detection of housing parts with complex cavities, achieve simple blocking, and improve the reliability and convenience of watertight detection.

Description

Technical Field

[0001] The utility model relates to a watertight detection fixture, in particular to a blocking structure for a shell with a multi-cavity complex structure. Background Art

[0002] In recent years, the requirements for the sealing of gearbox products have become increasingly stringent. The sealing of gearbox products is closely related to the sealing of the gearbox housing. Whether the air duct sealing of the housing is qualified or not directly affects whether the gear shifting action can be carried out smoothly, so the air duct of the housing needs to be tested for watertightness separately.

[0003] There are many air ducts in the existing gearbox housing. The inner cavity structure of the housing is complex, with many air duct branches, involving many air inlets and outlets, and most of them are small-diameter light hole structures. At the same time, there are no bolt holes or other structures around these small-diameter light holes that can be used for tightening and compressing, making sealing and detection more difficult.

[0004] In addition, some screw holes on the gearbox housing are concave and lower than the end face where they are located; using a sealing gasket alone can block the ordinary mounting holes on the outer end face of the housing, but cannot block the concave screw holes; there are also multiple cylinder holes inside the gearbox housing for installing cylinders with different functions. Some cylinder holes are arranged in a dispersed manner, while others are arranged side by side. Therefore, a single cylinder hole sealing structure cannot meet the requirements for sealing cylinder holes with different arrangements. Therefore, it is urgent to design a watertight detection structure for housing parts with complex multi-cavity structures. Utility Model Content

[0005] The utility model aims to solve the technical problem that the existing common clamps lack corresponding blocking structures for small-diameter light holes and concave screw holes on the gearbox housing, and proposes a blocking structure for a housing with a multi-cavity complex structure.

[0006] In order to solve the above technical problems, the technical solutions provided by the utility model are as follows:

[0007] A plugging structure for a housing with a complex structure of multiple cavities, which is special in that it includes a small hole sealing component, an end face sealing component and a cylinder hole sealing component;

[0008] The small hole sealing assembly comprises a mounting bridge, a plurality of pressing members and a cone plug arranged at the bottom of the pressing member; the bridge is mounted on the outer end surface of the shell, and a plurality of pressing holes corresponding to the small holes on the outer end surface of the shell are axially opened thereon; the pressing member passes through the corresponding pressing holes to press the cone plug into the small hole corresponding to the outer end surface of the shell, so as to seal the small hole on the outer end surface of the shell;

[0009] The end face sealing assembly includes a bottom plate, a first screw and a second screw; a groove is provided in the middle of the bottom plate, and fixed through holes corresponding to a plurality of mounting holes on the outer end face of the shell and a fixed groove corresponding to the concave screw hole on the outer end face of the shell are provided around the bottom plate; the first screw passes through the fixed through hole and is threadedly connected to the corresponding mounting hole on the outer end face of the shell, so as to achieve blocking of the mounting hole; one end of the second screw passes through the fixed groove into the concave screw hole on the outer end face of the shell and is threadedly connected thereto, so as to achieve blocking of the concave screw hole;

[0010] The cylinder hole sealing assembly includes a radial sealing assembly and a side sealing assembly; the radial sealing assembly includes a first radial seal, a second radial seal, a fourth screw and a plurality of fifth screws; the first radial seal is used to seal the gear selection cylinder hole in the housing, and the first radial seal is axially provided with a first inflation port; the fourth screw is used to pass through the first radial seal and be threadedly connected to the hole wall of the gear selection cylinder hole to achieve sealing of the gear selection cylinder hole; the second radial seal is used to seal the main box cylinder hole in the housing; the fifth screw is used to pass through the second radial seal and be threadedly connected to the hole wall of the main box cylinder hole to achieve sealing of the main box cylinder hole;

[0011] The side sealing assembly includes a side sealing plate and a plurality of third screws; the side sealing plate is used to seal the lateral cylinder hole in the shell; a second inflation port is provided on the side sealing plate corresponding to the cylinder hole; the third screw is used to pass through the side sealing plate and be fixedly connected to the lateral cylinder hole to achieve sealing of the lateral cylinder hole.

[0012] Further, the bridge frame includes two support members, a support plate and two sixth screws;

[0013] The support plate is provided with a plurality of circular holes for observation and weight reduction; the plurality of pressing holes are provided on the support plate;

[0014] The two support members are vertically connected to the two ends of the support plate;

[0015] The two sixth screws are used to axially penetrate the corresponding support members and be fixedly connected to the outer end surface of the shell.

[0016] Further, the end face sealing assembly also includes a bottom sealing gasket;

[0017] The bottom sealing gasket is used to be arranged between the bottom plate and the outer end surface of the shell; through holes are respectively opened on the bottom sealing gasket at positions corresponding to the fixing through holes and the fixing grooves.

[0018] Further, the side sealing assembly also includes a side sealing gasket;

[0019] The side sealing gasket is used to be arranged between the side sealing plate and the lateral cylinder hole port; a third through hole is opened on the side sealing gasket at a position corresponding to the second inflation port on the side sealing plate, for allowing the inflation connector to pass through and be connected to the second inflation port.

[0020] Further, the first radial seal comprises a first blocking portion adapted to the gear selection cylinder hole and a first outer edge circumferentially arranged at the upper outer edge of the first blocking portion and adapted to the gear selection cylinder hole port;

[0021] The first sealing portion is provided with a first concave sealing groove along the circumferential direction, and a gear selection cylinder O-ring is installed in the first sealing groove; the first inflation port is provided at an axial position of the first sealing portion;

[0022] The first outer edge is provided with a plurality of fourth through holes corresponding one to one with the plurality of screw holes on the gear selection cylinder hole, and the fourth screws pass through the fourth through holes and are threadedly connected with the screw holes on the gear selection cylinder hole.

[0023] Furthermore, the second radial seal is a second blocking portion adapted to the main box cylinder hole; the second blocking portion is provided with a concave second sealing groove along the circumferential direction, and the main box cylinder O-ring is installed in the second sealing groove;

[0024] The outer periphery of the upper end surface of the second blocking portion is provided with a plurality of fifth through holes corresponding one to one with the screw holes on the main box cylinder hole, and the fifth screws pass through the fifth through holes and are threadedly connected with the screw holes on the main box cylinder hole.

[0025] Furthermore, the end face sealing assembly also includes a bottom surface pressing member and a bottom surface blocking member;

[0026] One end of the second screw passes through the bottom surface pressing piece and is threadedly connected to the bottom surface blocking piece, and the bottom surface blocking piece is used to fix the second screw.

[0027] Beneficial effects of the utility model:

[0028] 1. The utility model includes three sealing components, namely, end face sealing, radial sealing and small hole sealing, which respectively seal and detect the outer end face of the shell, the cylinder hole and the small hole, and can solve the problem of watertight detection of shell parts with complex cavities, realize simple sealing, and improve the reliability and convenience of watertight detection.

[0029] 2. In the utility model, the small hole sealing assembly is provided with a bridge frame, which is erected in parallel on the outer end surface of the shell, and a plurality of pressing pieces are arranged on the bridge frame, which are used to squeeze the cone plug into the small diameter light hole of the shell. Since there are no bolt holes or other structures that can be used for tightening and pressing around the small diameter light hole, it is difficult to install it directly with bolts. The utility model can solve the problem of blocking and detecting the small diameter light hole by cooperating with the bridge frame and the pressing piece.

[0030] 3. In the utility model, a fixing groove is provided on the bottom plate to seal the concave screw hole on the outer end surface of the shell; since the bottom sealing gasket cannot fit the concave screw hole when installed directly, a second screw is used to cooperate with the fixing groove; after the second screw fits the concave screw hole, it is installed in the fixing groove to achieve effective sealing.

[0031] 4. In the present invention, the first outer edge of the first radial seal is a straight line on one side close to the inner end surface of the shell, and the other sides are arcs, thereby avoiding the problem of interference between the fixture and the shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a schematic diagram of a small hole sealing component in an installed state in an embodiment of a plugging structure for a housing with a complex structure of multiple cavities of the utility model;

[0033] Figure 2 This is a schematic diagram of an end face sealing component and a cylinder hole sealing component in an installed state in an embodiment of a plugging structure for a housing with a complex structure of multiple cavities according to the utility model;

[0034] Figure 3 for Figure 2 AA view;

[0035] Figure 4 for Figure 2 BB view;

[0036] Figure 5 This is a structural schematic diagram of a support plate in an embodiment of a plugging structure for a housing with a multi-cavity complex structure according to the utility model;

[0037] Figure 6 This is a structural schematic diagram of a bottom plate in an embodiment of a plugging structure for a housing with a multi-cavity complex structure according to the utility model;

[0038] Figure 7 This is a schematic structural diagram of a first radial seal in an embodiment of a plugging structure for a housing with a multi-cavity complex structure according to the utility model;

[0039] Figure 8 It is a structural schematic diagram of a second radial seal in an embodiment of a plugging structure for a housing with a multi-cavity complex structure according to the utility model.

[0040] Description of reference numerals:

[0041] 11-bridge, 12-pressing piece, 13-conical plug, 14-pressing hole; 21-bottom plate, 22-bottom sealing gasket, 23-fixed through hole, 24-fixed groove, 26-bottom surface pressing piece, 27-bottom surface blocking piece; 31-first radial sealing piece, 32-gear selection cylinder O-ring, 33-second radial sealing piece, 34-main box cylinder O-ring, 35-fourth screw, 36-fifth screw, 37-first sealing groove, 38-fourth through hole, 39-second sealing groove; 41-side sealing plate, 42-third screw, 43-side sealing gasket; 5-sixth screw. DETAILED DESCRIPTION

[0042] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0043] The utility model discloses a watertight detection fixture for a housing with a complex structure of multiple cavities, comprising a small hole sealing component, an end face sealing component and a cylinder hole sealing component, such as Figures 1 to 8 shown.

[0044] like Figure 1 As shown, the small hole sealing assembly includes a bridge frame 11, a plurality of pressing members 12 and a cone plug 13 arranged at the bottom of the pressing member 12, which is used to detect the water tightness of the small hole on the shell; the bridge frame 11 is used to be installed on the outer end surface of the shell, and a plurality of cylinder holes are arranged on the inner end surface of the shell, and the outer end surface is used to connect with other components of the vehicle body. Figure 1 , Figure 5 As shown, the bridge 11 includes two support members, a support plate and a sixth screw 5; the lower ends of the two support members are respectively arranged perpendicular to the two ends of the outer end surface of the shell, and the support plate is connected to the upper ends of the two support members and is parallel to the outer end surface of the shell; the sixth screw 5 fixes the support member to the shell. The support plate is provided with pressing holes 14 corresponding to the multiple small holes on the outer end surface of the shell; the pressing member 12 passes through the pressing hole 14 on the bridge 11, so that the cone plug 13 is pressed into the small hole to achieve the blocking of the small hole on the outer end surface of the shell; the support plate is also provided with multiple circular holes, the diameter of which is larger than the diameter of the pressing hole, and the circular holes are used for observation during watertightness detection, and at the same time play a role in weight reduction.

[0045] Since the small hole on the outer end surface of the shell is a small diameter light hole with a diameter of 5 to 10 cm, the cone plug 13 cannot be directly placed in the light hole. Therefore, the bridge frame 11 structure is designed to facilitate the application of a pressing force to the cone plug 13.

[0046] like Figure 2 , Figure 3 , Figure 4 , Figure 6 As shown, the end face sealing assembly includes a bottom plate 21, a bottom sealing gasket 22, a first screw and a second screw; Figure 6As described, a groove is provided in the middle of the bottom plate 21, and fixed through holes 23 and fixed grooves 24 are provided around it. The fixed through holes 23 correspond to the mounting holes on the outer end surface of the shell, and the fixed grooves 24 correspond to the screw holes on the outer end surface of the shell that are concave compared to the outer end surface.

[0047] The bottom sealing gasket 22 is fitted to the outer end surface of the shell, and the bottom sealing gasket 22 is provided with through holes corresponding to the fixing through hole 23 and the fixing groove 24 respectively. The bottom plate 21 is fitted to the bottom sealing gasket 22, and the first screw passes through the fixing through hole 23 and the corresponding through hole from top to bottom in sequence, and is threadedly connected to the mounting hole to achieve blocking of the mounting hole; a nylon gasket is provided at the tail end of the first screw. One end of the second screw is set in the fixing groove 24 to achieve blocking of the concave screw hole; the other end passes through the second through hole and is threadedly connected to the concave screw hole, the bottom surface pressing member 26 passes through the lower end of the second screw to reinforce the sealing effect, and the bottom surface blocking member 27 is threadedly connected to the tail end of the second screw to achieve blocking of the concave screw hole.

[0048] like Figure 2 As shown, the cylinder bore sealing assembly includes a radial sealing assembly and a side sealing assembly;

[0049] like Figure 7 As shown, the radial sealing assembly includes a radial seal and a radial screw; the radial seal includes a first radial seal 31, a gear selection cylinder O-ring 32, a second radial seal 33, a main box cylinder O-ring 34, a fourth screw 35 and a plurality of fifth screws 36; the first radial seal 31 includes a first sealing portion and a first outer edge, the first sealing portion is provided with a first concave sealing groove 37 along the circumferential direction, the gear selection cylinder O-ring 32 is installed in the first sealing groove 37, and the first sealing portion is installed in contact with the inner wall of the gear selection cylinder hole to achieve sealing of the gear selection cylinder hole. A first inflation port is provided at the center of the first blocking portion for installing an inflation connector; the first outer edge is installed in contact with the port of the gear selection cylinder hole, and a fourth through hole 38 corresponding to the screw hole on the gear selection cylinder hole is provided thereon, and a fourth screw 35 passes through the fourth through hole 38 and is threadedly connected with the corresponding screw hole on the gear selection cylinder hole, so as to realize a fixed connection between the first radial seal 31 and the gear selection cylinder hole; the side of the first outer edge close to the inner end face of the shell is a straight line, and the other sides are arcs. After the first radial seal 31 is installed, the inflation connector of the external inflation device is inflated through the first inflation port and a watertightness test is performed in water.

[0050] like Figure 8The second radial seal 33 shown is a second sealing portion arranged to fit the inner wall of the main box cylinder hole; the second sealing portion is provided with a concave second sealing groove 39 along the circumferential direction, and the main box cylinder O-ring 34 is installed in the second sealing groove; the outer periphery of the upper end surface of the second sealing portion 39 is provided with a fifth through hole, and the fifth through hole corresponds to the screw hole on the main box cylinder hole. The fifth screw 36 passes through the fifth through hole and is threadedly connected with the corresponding screw hole on the main box cylinder hole to fix the second radial seal 33 to the main box cylinder hole.

[0051] like Figure 2 As shown, the side sealing assembly includes a side sealing plate 41, a third screw 42 and a side sealing gasket 43;

[0052] The side sealing plate 41 is arranged in close contact with the side sealing gasket 43, and a third screw hole corresponding to the screw hole on the side cylinder hole is arranged on the side sealing plate 41; a second inflation port is also arranged on the side sealing plate 41 corresponding to the center of the cylinder hole; the side sealing gasket 43 is arranged in close contact with the port of the side cylinder hole, and a third secondary screw hole corresponding to the third screw hole and a third through hole corresponding to the second inflation port are arranged on the side sealing gasket 43. The third screw 42 passes through the third screw hole and the third secondary screw hole in turn, and is threadedly connected with the screw hole on the side cylinder hole, so as to fix the side sealing plate 41 and the side sealing gasket 43 with the side cylinder hole, thereby sealing the side cylinder hole. The inflation joint is installed in the second inflation port and the third through hole to realize the watertightness detection of the side cylinder hole.

Claims

1. A plugging structure for a housing with a complex structure of multiple cavities, characterized in that: It includes a small hole sealing assembly, an end face sealing assembly and a cylinder hole sealing assembly; The small hole sealing assembly comprises a mounting bridge (11), a plurality of pressing pieces (12), and a cone plug (13) arranged at the bottom of the pressing piece (12); the bridge (11) is mounted on the outer end surface of the shell, and is axially provided with pressing holes (14) corresponding to the plurality of small holes on the outer end surface of the shell; the pressing piece (12) passes through the corresponding pressing hole (14) to press the cone plug (13) into the small hole corresponding to the outer end surface of the shell, thereby sealing the small hole on the outer end surface of the shell; The end face sealing assembly comprises a base plate (21), a first screw and a second screw; a groove is provided in the middle of the base plate (21), and fixed through holes (23) corresponding to a plurality of mounting holes on the outer end face of the shell are provided around the base plate, and a fixed groove (24) corresponding to a concave screw hole on the outer end face of the shell; the first screw passes through the fixed through hole (23) and is threadedly connected to the corresponding mounting hole on the outer end face of the shell, so as to achieve blocking of the mounting hole; one end of the second screw passes through the fixed groove (24) into the concave screw hole on the outer end face of the shell and is threadedly connected thereto, so as to achieve blocking of the concave screw hole; The cylinder hole sealing assembly comprises a radial sealing assembly and a side sealing assembly; the radial sealing assembly comprises a first radial sealing member (31), a second radial sealing member (33), a fourth screw (35) and a plurality of fifth screws (36); the first radial sealing member (31) is used to seal the gear selection cylinder hole in the housing, and the first radial sealing member (31) is axially provided with a first inflation port; the fourth screw (35) is used to pass through the first radial sealing member (31) and be threadedly connected to the hole wall of the gear selection cylinder hole to seal the gear selection cylinder hole; the second radial sealing member (33) is used to seal the main box cylinder hole in the housing; the fifth screw (36) is used to pass through the second radial sealing member (33) and be threadedly connected to the hole wall of the main box cylinder hole to seal the main box cylinder hole; The side sealing assembly comprises a side sealing plate (41) and a plurality of third screws (42); the side sealing plate (41) is used to seal the lateral cylinder hole in the housing; a second inflation port is provided on the side sealing plate (41) at a position corresponding to the cylinder hole; the third screws (42) are used to pass through the side sealing plate (41) and be fixedly connected to the lateral cylinder hole to achieve sealing of the lateral cylinder hole.

2. The plugging structure for a housing with a complex structure having multiple cavities according to claim 1, characterized in that: The bridge frame (11) comprises two support members, a support plate and a plurality of sixth screws (5); The support plate is provided with a plurality of circular holes for observation and weight reduction; the plurality of pressing holes (14) are provided on the support plate; The two support members are vertically connected to the two ends of the support plate; The plurality of sixth screws (5) are used to axially penetrate corresponding support members and be fixedly connected to the outer end surface of the shell.

3. A plugging structure for a housing with a complex structure having multiple cavities according to claim 1 or 2, characterized in that: The end face sealing assembly also includes a bottom sealing gasket (22); The bottom sealing gasket (22) is used to be arranged between the bottom plate (21) and the outer end surface of the shell; through holes are respectively opened on the bottom sealing gasket (22) at positions corresponding to the fixing through holes (23) and the fixing grooves (24).

4. The plugging structure for a housing with a complex structure having multiple cavities according to claim 1, characterized in that: The side sealing assembly also includes a side sealing pad (43); The side sealing pad (43) is used to be arranged between the side sealing plate (41) and the lateral cylinder hole port; a third through hole is opened on the side sealing pad (43) at a position corresponding to the second inflation port on the side sealing plate (41) for allowing an inflation connector to pass through and be connected to the second inflation port.

5. The plugging structure for a housing with a complex structure having multiple cavities according to claim 1, characterized in that: The first radial seal (31) comprises a first blocking portion adapted to the gear selection cylinder hole and a first outer edge circumferentially arranged on the upper outer edge of the first blocking portion and adapted to the gear selection cylinder hole port; The first sealing portion is provided with a first concave sealing groove (37) along the circumferential direction, and a gear selection cylinder O-ring (32) is installed in the first sealing groove (37); the first inflation port is opened at an axial position of the first sealing portion; The first outer edge is provided with a plurality of fourth through holes (38) corresponding one to one to the plurality of screw holes on the gear selection cylinder hole, and the fourth screws (35) pass through the fourth through holes (38) and are threadedly connected with the screw holes on the gear selection cylinder hole.

6. The plugging structure for a housing with a complex structure having multiple cavities according to claim 5, characterized in that: The second radial seal (33) is a second sealing portion adapted to the main box cylinder hole; the second sealing portion is provided with a concave second sealing groove (39) along the circumferential direction, and a main box cylinder O-ring (34) is installed in the second sealing groove (39); The outer periphery of the upper end surface of the second blocking portion is provided with a plurality of fifth through holes corresponding one to one with the screw holes on the main box cylinder hole, and the fifth screws (36) pass through the fifth through holes and are threadedly connected with the screw holes on the main box cylinder hole.

7. The plugging structure for a housing with a complex structure having multiple cavities according to claim 1, characterized in that: The end face sealing assembly also includes a bottom face pressing member (26) and a bottom face blocking member (27); One end of the second screw passes through the bottom surface pressing piece (26) and is threadedly connected to the bottom surface blocking piece (27), and the bottom surface blocking piece (27) is used to fix the second screw.

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