Supercharger fixing device, supercharger and engine

Abstract

The utility model discloses a supercharger fixing device, supercharger and engine, wherein the supercharger fixing device comprises a threaded rod piece and a fastening component, the threaded rod piece comprises a rod body and a positioning part, the rod body is connected with connecting holes on a supercharger body and a supercharger bracket, and a first threaded part is arranged on the periphery of the first end of the rod body; the positioning part is connected to the periphery of the rod body and located between the first end of the rod body and the second end of the rod body. And one end of the positioning part is positioned on the supercharger body, and the other end of the positioning part is positioned on the supercharger bracket. The fastening assembly is connected with the threaded rod piece so as to fix the supercharger body and the supercharger support. According to the supercharger fixing device, the reliability of the engine is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of supercharger installation, in particular to a supercharger fixing device, a supercharger and an engine. Background Art

[0002] In the engine's supercharger, there is an oil hole between the supercharger body and the supercharger bracket, which is used for oil inlet and oil return to the supercharger body. Figures 1 to 3 As shown, the supercharger body 02 and the supercharger bracket 03 are connected by a supercharger fixing device, and the threaded rod 01 of the supercharger fixing device passes through the connecting hole 04 and is finally installed on the threaded rod 01 through a fastening assembly to fix the supercharger body 02 and the supercharger bracket 03.

[0003] Among them, the threaded rod 01 is threadedly connected to the supercharger bracket 03. Since the diameter of the threaded position of the threaded rod 01 is larger than the rod position bracket of the threaded rod 01, in order to facilitate the movement of the threaded rod 01 in the connecting hole 04, the diameter of the connecting hole 04 on the supercharger body 02 and the supercharger bracket 03 for the threaded rod 01 to be installed should be equivalent to the threaded position with the larger diameter of the threaded rod 01. This results in a gap between the rod and the connecting hole 04. During installation, due to the gap between the rod and the connecting hole 04, there is a deviation in the positioning of the supercharger body 02 and the supercharger bracket 03, which in turn leads to inaccurate positioning of the oil hole at the connection position of the supercharger body 02 and the supercharger bracket 03, causing oil leakage at the joint surface of the supercharger body 02 and the supercharger bracket 03. Since the oil leakage point is very close to the exhaust pipe, it causes the engine to produce open flames, resulting in reduced engine reliability.

[0004] Therefore, how to improve the reliability of the engine is a technical problem that needs to be solved urgently by those skilled in the art. Utility Model Content

[0005] The purpose of the utility model is to provide a supercharger fixing device, a supercharger and an engine, so as to improve the reliability of the engine.

[0006] The present application provides a supercharger fixing device, comprising:

[0007] A threaded rod, the threaded rod comprising a rod body and a positioning portion, the rod body being connected to a connecting hole on a supercharger body and a supercharger bracket, the outer periphery of a first end of the rod body being provided with a first threaded portion that is threadedly connected to the supercharger bracket; the positioning portion being connected to the outer periphery of the rod body and being located between the first end of the rod body and the second end of the rod body; the outer periphery of the positioning portion being loosely fitted with the connecting hole, with one end being located on the supercharger body and the other end being located on the supercharger bracket;

[0008] A fastening assembly is connected to the threaded rod to fix the supercharger body and the supercharger bracket.

[0009] Optionally, in the above-mentioned supercharger fixing device, the threaded rod is an integrally formed structure.

[0010] Optionally, the above-mentioned supercharger fixing device further includes a fixing sleeve, which is arranged on the outside of the rod body, with one end of the fixing sleeve being used to abut against the supercharger body and the other end being used to abut against the fastening assembly.

[0011] Optionally, in the above-mentioned supercharger fixing device, a second threaded portion is provided on the outer periphery of the second end of the rod body, and the fastening assembly includes:

[0012] a nut body, wherein the nut body is provided with a first threaded hole and a second threaded hole, the first threaded hole is threadedly connected to the first threaded portion, and the first threaded hole and the second threaded hole are both through holes;

[0013] A stud is threadedly connected to the second threaded hole, and one end of the stud is used to press the end surface of the supercharger body.

[0014] Optionally, in the above-mentioned supercharger fixing device:

[0015] The end of the stud is provided with an inwardly concave operating hole adapted to a tool;

[0016] And / or, the stud is located in the inner cavity of the second threaded hole.

[0017] Optionally, in the above-mentioned supercharger fixing device, a plurality of the studs and the second threaded holes are provided, and the plurality of second threaded holes are sequentially distributed in the circumferential direction with the axis of the first threaded hole as the center line.

[0018] Optionally, in the above-mentioned supercharger fixing device, the positioning portion is located on the outer periphery of the rod body, and the outer diameters of the positioning portion, the first threaded portion and the second threaded portion are the same and coaxially arranged.

[0019] A supercharger comprises a supercharger body, a supercharger bracket and a supercharger fixing device connecting the supercharger body and the supercharger bracket, wherein the supercharger body and the supercharger bracket are provided with communicating oil holes, and the supercharger fixing device is any of the supercharger fixing devices described above.

[0020] Optionally, in the above-mentioned supercharger, two supercharger fixing devices are provided, and the plurality of supercharger fixing devices are arranged on opposite sides of the oil hole.

[0021] An engine includes a supercharger fixing device, wherein the supercharger fixing device is any one of the supercharger fixing devices described above.

[0022] In the above technical solution, the supercharger fixing device provided by the present invention includes a threaded rod and a fastening assembly. The threaded rod includes a rod body and a positioning portion. The rod body is connected to the connection holes on the supercharger body and the supercharger bracket. The first end of the rod body is provided with a first threaded portion on the outer periphery. The positioning portion is connected to the outer periphery of the rod body and is located between the first end and the second end of the rod body. The peripheral connection hole of the positioning portion is clearance-fitted, and one end is located on the supercharger body and the other end is located on the supercharger bracket. The fastening assembly is connected to the threaded rod to secure the supercharger body and the supercharger bracket.

[0023] As can be seen from the above description, in the supercharger fixing device provided by the present application, a positioning portion is provided on the rod body of the threaded rod, one end of the positioning portion is located on the supercharger body, and the other end is located on the supercharger bracket, that is, the positioning portion penetrates the supercharger body and the supercharger bracket. Then, by using the clearance fit of the peripheral connecting holes of the positioning portion, the clearance between the threaded rod and the supercharger body and the supercharger bracket limit position connecting holes is reduced, and then the supercharger body and the supercharger bracket are locked by the fastening assembly, thereby improving the positioning accuracy of the supercharger body and the supercharger bracket, thereby improving the positioning accuracy of the oil hole between the supercharger body and the supercharger bracket, and reducing oil leakage. Therefore, the supercharger fixing device provided by the present application improves the reliability of the engine. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0025] Figure 1 Schematic diagram of the structure of a traditional supercharger;

[0026] Figure 2 This is a schematic structural diagram of the connection between the supercharger body and the supercharger bracket in a traditional supercharger;

[0027] Figure 3 for Figure 2 An enlarged view of part A is shown;

[0028] Figure 4 A schematic structural diagram of a supercharger provided in an embodiment of the present utility model;

[0029] Figure 5A schematic structural diagram of the connection between the supercharger body and the supercharger bracket in the supercharger provided by an embodiment of the present utility model;

[0030] Figure 6 for Figure 5 An enlarged view of part B is shown;

[0031] Figure 7 A schematic structural diagram of a threaded rod provided in an embodiment of the present utility model;

[0032] Figure 8 A schematic structural diagram of a fastening assembly provided by an embodiment of the present utility model;

[0033] Figure 9 A cross-sectional view of a fastening assembly provided in an embodiment of the present invention.

[0034] in Figure 1-9 middle:

[0035] 01-threaded rod, 02-supercharger body, 03-supercharger bracket, 04-connecting hole;

[0036] 1-threaded rod, 101-rod body, 10101-first rod segment, 10102-second rod segment, 10103-second threaded portion, 10104-first threaded portion, 102-positioning portion;

[0037] 2-supercharger body, 3-supercharger bracket, 4-connection hole;

[0038] 5-fastening assembly, 501-nut body, 50101-first threaded hole, 50102-second threaded hole, 502-stud, 50201-operating hole, 6-fixing sleeve, 7-gasket. DETAILED DESCRIPTION

[0039] The core of the utility model is to provide a supercharger fixing device, a supercharger and an engine, so as to improve the reliability of the engine.

[0040] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and implementation methods.

[0041] Please refer to Figures 4 to 9 .

[0042] In one embodiment, the supercharger fixing device provided by the present invention includes a threaded rod 1 and a fastening assembly 5. The threaded rod 1 includes a rod body 101 and a positioning portion 102. The rod body 101 is connected to the supercharger body 2 and the connection hole 4 on the supercharger bracket 3. The outer periphery of the first end of the rod body 101 is provided with a first threaded portion 10104 that is threadedly connected to the supercharger bracket 3. Specifically, during assembly, the first threaded portion 10104 is threadedly connected to the supercharger bracket 3.

[0043] The positioning portion 102 is connected to the outer periphery of the rod body 101, located between the first and second ends of the rod body 101. The positioning portion 102 is fixedly connected to the rod body 101. To improve assembly efficiency, the threaded rod 1 is preferably an integrally molded structure. The peripheral connection hole 4 of the positioning portion 102 is loosely fitted. One end of the positioning portion 102 is located on the supercharger body 2, and the other end is located on the supercharger bracket 3.

[0044] Specifically, the fastening assembly 5 is clamped or threadedly connected to the threaded rod 1. When the fastening assembly 5 is threadedly connected to the threaded rod 1, the outer periphery of the second end of the rod body 101 is provided with a second threaded portion 10103, such as Figure 7 As shown, the threaded rod 1 forms a structure with two ends and a thick middle part. The positioning portion 102, which is the middle thickened part of the threaded rod 1, has a diameter changed from the traditional φ21mm to φ24mm. In order to solve the positioning problem, when installing the supercharger, it is necessary to use the thickened part to position the supercharger body 2, so as to facilitate the alignment of the supercharger body 2 and the supercharger bracket 3.

[0045] Specifically, the positioning portion 102 is located on the outer periphery of the rod body 101, and the outer diameter a3 of the positioning portion 102, the outer diameter a5 of the first threaded portion 10104, and the outer diameter a1 of the second threaded portion 10103 are the same, and are coaxially arranged. Alternatively, the outer diameter a2 of the second rod segment 10102 of the rod body 101 between the second threaded portion 10103 and the positioning portion 102 and the outer diameter a4 of the first rod segment 10101 of the rod body 101 between the first threaded portion 10104 and the positioning portion 102 are the same, and in this case, the outer diameter is smaller than the outer diameter of the positioning portion 102.

[0046] In one specific embodiment, the supercharger fixing device further includes a fixing sleeve 6, which is disposed externally of the rod body 101, with one end configured to abut against the supercharger body 2 and the other end configured to abut against the fastening assembly 5. The fixing sleeve 6 is disposed on the rod body 101 at a position away from the first threaded portion 10104. Specifically, the fixing sleeve 6 and the rod body 101 may have a clearance fit, and the fixing sleeve 6 may be a cylindrical pipe.

[0047] As can be seen from the above description, in the supercharger fixing device provided in the specific embodiment of the present application, since a positioning portion 102 is provided on the rod body 101 of the threaded rod 1, one end of the positioning portion 102 is located on the supercharger body 2 and the other end is located on the supercharger bracket 3, that is, the positioning portion 102 penetrates the supercharger body 2 and the supercharger bracket 3. Then, through the clearance fit of the peripheral connection hole 4 of the positioning portion 102, the supercharger body 2 and the supercharger bracket 3 are locked by the fastening assembly 5, thereby reducing the clearance between the threaded rod 1 and the limiting position connection hole 4 of the supercharger body 2 and the supercharger bracket 3, improving the positioning accuracy of the supercharger body 2 and the supercharger bracket 3, and further improving the positioning accuracy of the oil hole position between the supercharger body 2 and the supercharger bracket 3, thereby reducing the problem of oil leakage causing open fire in the supercharger.

[0048] Since the threaded rod 1 is subjected to greater shear force at the interface between the supercharger body 2 and the supercharger bracket 3, the threaded rod 1 is positioned at the interface to improve the reliability of the connection. Therefore, the supercharger fixing device provided by this application improves the reliability of the engine.

[0049] To prevent friction between the edge of the positioning portion 102 and the supercharger body 2 and supercharger bracket 3, in one embodiment, an annular guide surface is provided at one end of the positioning portion 102. Preferably, the inner ring of the annular guide surface engages the outer wall of the rod body 101. Of course, guide surfaces can be provided at opposite ends of the rod body 101.

[0050] Based on the above solutions, the fastening assembly 5 includes a nut body 501 and a stud 502. The nut body 501 is provided with a first threaded hole 50101 and a second threaded hole 50102. The first threaded hole 50101 is threadedly connected to the first threaded portion 10104. The aperture a6 of the first threaded hole 50101 is the same as the outer diameter of the first threaded portion 10104. Both the first threaded hole 50101 and the second threaded hole 50102 are through holes. The stud 502 is threadedly connected to the second threaded hole 50102, and one end is used to press against the end surface of the supercharger body 2.

[0051] Preferably, the center line of the nut body 501 is parallel to the axis of the stud 502. Specifically, the center line of the first threaded hole 50101 is parallel to the center line of the second threaded hole 50102.

[0052] like Figure 8 As shown, in order to improve the connection stability, preferably, the stud 502 and the second threaded hole 50102 are provided in plurality, and the plurality of second threaded holes 50102 are distributed in sequence in the circumferential direction with the axis of the first threaded hole 50101 as the center line. Specifically, the stud 502 can be provided in 4-8 numbers, such as Figure 8As shown, six studs 502 may be provided. In order to improve the connection stability, preferably, the plurality of second threaded holes 50102 are uniformly distributed in the circumferential direction with the axis of the first threaded hole 50101 as the center line.

[0053] like Figure 9 As shown, in order to facilitate the rotation of the stud 502 and reduce the space occupied by the stud 502, the stud 502 is preferably located in the inner cavity of the second threaded hole 50102. In order to facilitate the operation of the stud 502, the end of the stud 502 is preferably provided with a concave operation hole 50201. Specifically, the operation hole 50201 is adapted to be compatible with a tool that drives the stud 502 to rotate. For example, the operation hole 50201 is a regular hexagonal structure adapted to be compatible with a hexagonal wrench.

[0054] In order to improve the connection stability, it is preferred that the nut body 501 is a strong nut with greater strength, and the stud 502 is a strong stud with greater strength.

[0055] Specifically, the stud 502 can be pressed against the end surface of the fixing sleeve 6 , and the force is transmitted to the supercharger body 2 through the fixing sleeve 6 .

[0056] Preferably, a gasket 7 is provided between the fixing sleeve 6 and the nut body 501, and the stud 502 is tightened to compress the gasket 7. The function of the gasket 7 is to prevent the strong stud from directly contacting the surface of the fixing sleeve 6 and crushing the surface of the fixing sleeve 6, thereby protecting the fixing sleeve 6.

[0057] During the specific assembly, the supercharger body 2 and the supercharger bracket 3 are positioned using the threaded rod 1, the fixing sleeve 6 is placed into the supercharger intermediate body, and finally the fixing sleeve 6 and the gasket 7 are compressed using the nut body 501 to finally fix the supercharger.

[0058] The present application compresses the gasket 7 by cooperating with the strong nut and the strong stud, and then compresses the fixing sleeve 6. The strong stud can strengthen the tightening torque for a second time, thereby preventing the strong nut body 501 from loosening.

[0059] This application provides a supercharger comprising a supercharger body 2, a supercharger bracket 3, and a supercharger fixing device connecting the supercharger body 2 and the supercharger bracket 3. The supercharger body 2 and the supercharger bracket 3 are provided with interconnecting oil holes. The supercharger fixing device is any of the supercharger fixing devices described above. The specific structure of the supercharger fixing device is described above. This application also includes the above-described supercharger fixing device and achieves the aforementioned technical effects.

[0060] In a specific embodiment, two supercharger fixing devices are provided, and the multiple supercharger fixing devices are arranged on opposite sides of the oil hole.

[0061] The present application provides an engine including a supercharger fixing device, wherein the supercharger fixing device is any of the supercharger fixing devices described above. The above description describes the specific structure of the supercharger fixing device. The present application includes the above supercharger fixing device and also has the above technical effects.

[0062] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0063] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A supercharger fixing device, characterized in that: include: A threaded rod (1), the threaded rod (1) comprising a rod body (101) and a positioning portion (102), the rod body (101) being connected to a supercharger body (2) and a connecting hole (4) on a supercharger bracket (3), the outer periphery of a first end of the rod body (101) being provided with a first threaded portion (10104) threadedly connected to the supercharger bracket (3); the positioning portion (102) being connected to the outer periphery of the rod body (101) and being located between the first end of the rod body (101) and the second end of the rod body (101); the outer periphery of the positioning portion (102) being clearance-matched with the connecting hole (4), with one end being located on the supercharger body (2) and the other end being located on the supercharger bracket (3); A fastening assembly (5) is connected to the threaded rod (1) to fix the supercharger body (2) and the supercharger bracket (3).

2. The supercharger fixing device according to claim 1, characterized in that: The threaded rod (1) is an integrally formed structure.

3. The supercharger fixing device according to claim 1, characterized in that: It also includes a fixing sleeve (6), which is sleeved on the outside of the rod body (101), with one end used to abut against the supercharger body (2) and the other end used to abut against the fastening assembly (5).

4. The supercharger fixing device according to any one of claims 1 to 3, characterized in that: A second threaded portion (10103) is provided on the outer periphery of the second end of the rod body (101), and the fastening assembly (5) comprises: A nut body (501), wherein the nut body (501) is provided with a first threaded hole (50101) and a second threaded hole (50102), wherein the first threaded hole (50101) is threadedly connected to the first threaded portion (10104), and both the first threaded hole (50101) and the second threaded hole (50102) are through holes; A stud (502), wherein the stud (502) is threadedly connected to the second threaded hole (50102), and one end of the stud is used to press the end surface of the supercharger body (2).

5. The supercharger fixing device according to claim 4, characterized in that: The end of the stud (502) is provided with an inwardly concave operating hole (50201) adapted to fit a tool; And / or, the stud (502) is located in the inner cavity of the second threaded hole (50102).

6. The supercharger fixing device according to claim 4, characterized in that: There are multiple studs (502) and multiple second threaded holes (50102), and the multiple second threaded holes (50102) are distributed in sequence in the circumferential direction with the axis of the first threaded hole (50101) as the center line.

7. The supercharger fixing device according to claim 4, characterized in that: The positioning portion (102) is located on the outer periphery of the rod body (101), and the outer diameter of the positioning portion (102), the outer diameter of the first threaded portion (10104) and the outer diameter of the second threaded portion (10103) are all the same and are coaxially arranged.

8. A supercharger, comprising a supercharger body (2), a supercharger bracket (3) and a supercharger fixing device connecting the supercharger body (2) and the supercharger bracket (3), wherein the supercharger body (2) and the supercharger bracket (3) are provided with communicating oil holes, characterized in that: The supercharger fixing device is the supercharger fixing device according to any one of claims 1 to 7.

9. The supercharger according to claim 8, characterized in that There are two supercharger fixing devices, and the multiple supercharger fixing devices are arranged on two opposite sides of the oil hole.

10. An engine comprising a supercharger fixing device, characterized in that: The supercharger fixing device is the supercharger fixing device according to any one of claims 1 to 7.

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