Multi-component connection structure

Abstract

In a multi-part connecting structure, a gap between joining surfaces of two parts sandwiching a sealing material is made constant, without damaging the sealing material, to ensure stable sealing. The multi-part connecting structure has a first part (1), and second and third parts (2, 3) each having a second and third joining surface (2a, 3a) opposite a first joining surface (1a) of the first part (1), the second and third parts (2, 3) being arranged side by side and in a connected state, a sealing material (S (S1, S2)) being sandwiched between the first joining surface (1a) and the second and third joining surfaces (2a, 3a), the first part (1) and the second part (2) being bolted, wherein a protruding pin portion (10) is provided on the first joining surface (1a) of the first part (1), and a recess portion (20) for abutting the protruding pin portion (10) is provided on the third joining surface (3a) of the third part (3).

Description

Technical Field

[0001] This disclosure relates to a multi-component connection structure. Background Technology

[0002] In multi-component connection structures, for example, Figure 4 As shown, the device comprises a first component 1, a first mating surface 1a of the first component 1, and a second component 2 and a third component 3, each having a second mating surface 2a and a third mating surface 3a respectively opposite to the first mating surface 1a of the first component 1. The second component 2 and the third component 3 are arranged side-by-side and connected. With a sealing material S sandwiched between the first mating surface 1a of the first component 1 and the second mating surfaces 2a and 3a of the second and third components 3, respectively, the first component 1 and the second component 2 are fastened together using bolts B. The sealing material S is sandwiched between the first mating surface 1a of the first component 1 and the second mating surface 2a of the second component 2, and between the first mating surface 1a of the first component 1 and the third mating surface 3a of the third component 3.

[0003] Furthermore, Japanese Patent Application Publication No. 2010-144899 proposes a method that ensures a stable seal when a sealing material is clamped between the opposing mating surfaces of two fastened components. In this prior art, one component has a recess for receiving the sealing material. The other component has a protrusion that protrudes into the recess when the two components are joined. The sealing material is fixed within the recess by being received within it when the two components are joined. Furthermore, the protrusion is pressed into the sealing material when the two components are joined.

[0004] However, in conventional multi-component connection structures, due to the dimensional tolerances of each component, the gap between the two components clamping the sealing material is not constant, and the sealing material clamped between the two components may not be able to ensure a constant thickness. As a result, sometimes excessive clamping force is applied to the sealing material, damaging it and failing to ensure stable sealing performance.

[0005] In addition, even in Figure 4 In the connection structure shown between the first component 1 and the second and third components 3, when the first component 1 warps due to the tightening force of the bolts B that fasten the first and second components 1 and 2, the gap between the first mating surface 1a of the first component 1 and the third mating surface 3a of the third component 3, which clamps the sealing material S, becomes too small due to the dimensional tolerances of each component 1, 2, and 3. This can sometimes damage the sealing material S clamped between the two mating surfaces 1a and 3a, making it impossible to ensure a stable seal. Utility Model Content

[0006] The subject of this disclosure is to ensure stable sealing performance by maintaining a constant gap between the mating surfaces of two components of a clamping sealing material in a multi-component connection structure without damaging the sealing material.

[0007] According to a multi-component connection structure disclosed herein, there are: a first component; and a second component and a third component, each having a second engagement surface and a third engagement surface opposite to a first engagement surface of the first component. The second component and the third component are arranged side by side and connected. A sealing material is sandwiched between the first engagement surface of the first component and the second engagement surface of the second component and the third engagement surface of the third component. The first component and the second component are fastened together by bolts. A protruding pin is provided on the first engagement surface of the first component, and a recess is provided on the third engagement surface of the third component for the protruding pin to abut against.

[0008] In a multi-component connection structure, a protruding pin is provided on the first mating surface of the first component, and a recess is provided on the third mating surface of the third component for the protruding pin to abut against. This ensures a constant gap between the first and third mating surfaces that clamp the sealing material, guaranteeing a constant thickness of the sealing material clamped between these components. Therefore, excessive clamping force is not applied to the sealing material, resulting in no damage to the sealing material and ensuring stable sealing performance.

[0009] In addition, it is not necessary to provide recesses or protrusions over a large range along the sealing length of the two components of the clamping sealing material, which can easily ensure the strength maintenance of each component. Attached Figure Description

[0010] Figure 1A This is a schematic cross-sectional view showing one embodiment of the present disclosure.

[0011] Figure 1B This is an enlarged cross-sectional view of the main part of one embodiment of this disclosure.

[0012] Figure 2A A three-dimensional schematic diagram showing the state in which the protruding pin in this disclosure has not yet entered the recess.

[0013] Figure 2B A cross-sectional schematic diagram showing the state in which the protruding pin abuts against the bottom surface of the recess in this disclosure.

[0014] Figure 3 This is a schematic diagram illustrating one application method of this disclosure.

[0015] Figure 4 It is a cross-sectional schematic diagram of an existing structure. Detailed Implementation

[0016] This disclosure can be applied to components of a vehicle's powertrain and drive system, for example, such as Figure 3 As shown, multiple components (first component 1, second component 2, third component 3, and fourth component 4) that form the electronic chamber A, motor chamber M, and gear chamber G are assembled and connected in one place, sharing a wall that shields the function of each chamber, thereby enabling the miniaturization of power and drive system components, etc.

[0017] Furthermore, the multi-component connection structure of the present invention can... Figure 3 The connection structure of the three components shown (first component 1, second component 2 and third component 3) can be used (it can also be used in the connection structure of the three components shown (first component 1, third component 3 and fourth component 4).

[0018] like Figure 1A and 1B As shown, in the connection structure of the above three components, there is a first component 1, a second component 2, and a third component 3. The first component has a first mating surface 1a, the second component 2 has a second mating surface 2a, and the third component 3 has a third mating surface 3a. The first mating surface 1a is opposite to the second mating surface 2a and the third mating surface 3a. At this time, the second component 2 and the third component 3 are arranged side by side and connected by a connecting mechanism such as a connecting pin 5. In addition, with a sealing material S sandwiched between the first mating surface 1a of the first component 1 and the second mating surface 2a of the second component 2 and the third mating surface 3a of the third component 3, the first component 1 and the second component 2 are fastened with bolt B1, and the first component 1 and the third component 3 are fastened with bolt B2. Furthermore, the sealing material S is sandwiched between the first mating surface 1a of the first component 1 and the second mating surface 2a of the second component 2, and between the first mating surface 1a of the first component 1 and the third mating surface 3a of the third component 3.

[0019] exist Figure 1A and 1BIn the example, due to the dimensional tolerances of the first component 1, the second component 2, and the third component 3, the gap δ2 between the first mating surface 1a of the first component 1 and the third mating surface 3a of the third component 3 is smaller than the gap δ1 between the first mating surface 1a of the first component 1 and the second mating surface 2a of the second component 2. That is, the first component 1 warps (flexes) due to the tightening force of the bolt B1 that fastens the first component 1 and the second component 2. As a result, the gap between the first mating surface 1a of the first component 1 and the third mating surface 3a of the third component 3, which clamps the sealing materials S (sealing materials S1 and S2), becomes smaller due to the dimensional tolerances of each component 1, 2, and 3. Consequently, the sealing material S2, which is clamped by the small gap δ2 between the first mating surface 1a of the first component 1 and the third mating surface 3a of the third component 3, is compressed more than the sealing material S1, which is clamped between the first mating surface 1a of the first component 1 and the second mating surface 2a of the second component 2. Among them, the aforementioned sealing material S1 and sealing material S2 can be in the form of continuous plates of the same thickness in their free state before being clamped between these components.

[0020] In this embodiment, in order to reduce the damage caused by the large compressive force on the periphery of the corner portion 3b of the third component 3 closest to the first joint surface 1a of the first component 1, which is sandwiched in the small gap δ2 between the two joint surfaces 1a and 3a due to the tightening force of the bolt B1, and to ensure stable sealing, the sealing material S2 adopts the following structure.

[0021] That is, in this embodiment, such as Figure 1B , Figure 2B As shown, a protruding pin 10 is provided on the first mating surface 1a of the first component 1, and a recess 20 is provided on the third mating surface 3a of the third component for the protruding pin 10 to abut against. The front end face 11 of the protruding pin 10 abuts against the bottom surface 21 of the hole in the recess 20.

[0022] Therefore, the small gap δ2 between the first mating surface 1a of the first component 1 and the third mating surface 3a of the third component 3 can be kept constant, and the sealing material S2 clamped between the first component 1 and the third component 3 can ensure a constant thickness. Therefore, excessive clamping force is not applied to the sealing material S2, and as a result, the sealing material S2 is not damaged, and stable sealing performance can be ensured.

[0023] At this time, the gap δ1 between the first mating surface 1a of the first component 1 and the second mating surface 2a of the second component 2 is larger than the aforementioned small gap δ2. The clamping force applied to the sealing material S1 clamped between the first component 1 and the second component 2 will not be greater than the clamping force applied to the sealing material S2, thus ensuring stable sealing without damaging the sealing material S1.

[0024] exist Figure 2A In this embodiment, L represents the sealing line where the sealing material S (S1, S2) is applied. In this embodiment, the sealing line L extends at a position that does not overlap with the setting portion of the protruding pin portion 10 or the recessed portion 20.

[0025] Furthermore, in this embodiment, such as Figure 1A , Figure 1B , Figure 2A and Figure 2B (In particular, as shown with reference to the sealing line L), the sealing material S (S1, S2) is not penetrated by the bolts B1, B2, and the protruding pin 10.

[0026] Alternatively, the protruding pin 10 can be integrally formed with the first component 1, or it can be formed by inserting and fixing a positioning pin into the first component 1 (the positioning pin needs to be inserted into the bottom surface of the positioning pin insertion hole without gap).

[0027] Alternatively, two protruding pins 10 may be provided on the first mating surface 1a of the first component 1, such that one protruding pin 10 abuts against the recess 20 provided on the third mating surface 3a of the third component 3, and the other protruding pin 10 abuts against the recess 20 provided on the second mating surface 2a of the second component 2.

[0028] In addition, in order to minimize the displacement of the first mating surface 1a of the first component 1 near the corner 3b of the third component 3 due to the bending deformation caused by the tightening force of bolt B1, and to suppress damage to the sealing material S2 around the corner 3b, such as Figure 1B As shown, the distance d between the protruding pin portion 10 of the first component 1 and the corner portion 3b of the third component 3 is preferably small.

[0029] The embodiments of this disclosure have been described in detail above with reference to the accompanying drawings. However, the specific structure of this disclosure is not limited to these embodiments. Even if there are design changes that do not depart from the spirit of this disclosure, they are also included in this disclosure.

[0030] According to this disclosure, in a multi-component connection structure, the gap between the mating surfaces of two components that clamp the sealing material can be kept constant, thus ensuring stable sealing without damaging the sealing material between them.

[0031] Explanation of reference numerals in the attached figures 1 First Component 1a First mating surface 2 Second component 2a Second mating surface 3 Third component 3a Third mating surface 3b Corner 4. Fourth component 5 Connecting pins 10. Convex pin section 11 Front end 20 concavity Bottom surface of hole 21 Bolts B, B1, and B2 S, S1, S2 sealing materials

Claims

1. A multi-component connection structure, comprising: First component; and The second component and the third component each have a second mating surface and a third mating surface that are opposite to the first mating surface of the first component. The second and third components are arranged side by side and connected to each other. A sealing material is sandwiched between the first mating surface of the first component and the second and third mating surfaces of the second and third components. The first and second components are fastened together with bolts, and the multi-component connection structure is characterized in that... A protruding pin is provided on the first mating surface of the first component. A recess is provided on the third mating surface of the third component for the aforementioned protruding pin to abut against.

Images