Cam shaft convenient to assemble

Abstract

The utility model provides a cam shaft convenient to assemble, which comprises a side edge transmission gear structure, the side edge transmission gear structure comprises a gear disc, an attaching ring is arranged on the outer wall of the gear disc, an outer attaching strip is arranged between the attaching ring and the outer side of the gear disc, and an inner attaching strip is arranged on the inner side of the attaching ring and the inner side of the gear disc. Threads are arranged on the outer wall of the outer attaching strip, a fixing nut is arranged on the outer wall of the outer attaching strip, and the outer attaching strip is in threaded connection with the fixing nut. The gear disc fixing device is reasonable in design, the first positioning groove, the second positioning groove, the outer attaching strip and the inner attaching strip are aligned with one another, and a gear disc pre-installed on the outer wall of a cam shaft structure can be fixed; and meanwhile, threads on the outer wall of the outer attaching strip are aligned with threads at one end of the camshaft body, and then fixing nuts are installed on the outer attaching strip and the outer wall of the camshaft body, so that the gear disc on the outer wall of the camshaft structure is rapidly installed.

Description

A camshaft that is easy to assemble Technical Field

[0001] This utility model mainly relates to the field of camshafts, specifically to a camshaft that is easy to assemble. Background Technology

[0002] As a core component in internal combustion engines and mechanical transmissions, the camshaft functions to control the timing of valve or actuator movement through precise cam profile design, directly affecting the efficiency, emissions, and operational stability of the power system. In most internal combustion engines, gears (or sprockets, pulleys) need to be installed on the side of the camshaft to link with the crankshaft and achieve valve timing synchronization.

[0003] During the operation of specific embodiments, the inventors discovered the following defects:

[0004] The gear at one end of the camshaft needs to be fine-tuned during installation, but it needs to be fixed with bolts or nuts after installation. If the gear on one side of the camshaft is loosened, the gear will be displaced at one end of the camshaft, affecting its subsequent accuracy.

[0005] It should be noted that the above content falls within the scope of the inventor's technical knowledge. Due to the vast and complex nature of the technical content in this field, the above content of this application does not necessarily constitute prior art. Summary of the Invention

[0006] 1. The technical problem to be solved by the utility model:

[0007] This invention provides a camshaft that is easy to assemble, thereby solving the technical problems existing in the background art.

[0008] 2. Technical Solution:

[0009] To achieve the above objectives, the technical solution provided by this utility model is: a camshaft that is easy to assemble, comprising a camshaft structure, wherein a side transmission gear structure is provided on one side of the camshaft structure;

[0010] A side-drive gear structure includes a gear disk, an outer wall of which is provided with a fitting ring, an outer fitting strip between the fitting ring and the outer side of the gear disk, an inner fitting strip between the fitting ring and the inner side of the gear disk, a thread on the outer wall of the outer fitting strip, a fixing nut on the outer wall of the outer fitting strip, and the outer fitting strip and the fixing nut being threadedly connected.

[0011] Furthermore, the camshaft structure includes a camshaft body, an inlet groove is provided inside the camshaft body, a guide ring is provided at one end of the inlet groove, a rotary sealing ring is provided between the guide ring and the inlet groove, and a connecting structure is provided at the other end of the inlet groove.

[0012] Furthermore, the connection structure includes a first positioning groove and a second positioning groove. The first positioning groove is formed on the inner wall of the liquid inlet groove, and the second positioning groove is formed on the outer wall of the camshaft body. The outer wall of the camshaft body is provided with threads.

[0013] Furthermore, the outer wall of the camshaft body is provided with a cam body, the interior of the cam body is provided with a guide groove, the guide groove is connected to the cam body, and the interior of the cam body is provided with a flow divider groove, the flow divider groove is connected to the guide groove.

[0014] Furthermore, air distribution grooves are provided on both sides of the cam body, and the air distribution grooves are connected to the flow distribution grooves. The number of cam bodies is set to multiple.

[0015] Furthermore, the outer wall of the outer bonding strip is bonded to the inner wall of the second positioning groove, and the inner wall of the inner bonding strip is bonded to the inner wall of the first positioning groove.

[0016] 3. Beneficial effects:

[0017] Compared with the prior art, the technical solution provided by this utility model has the following advantages:

[0018] This utility model can fix the gear disk pre-installed on the outer wall of the camshaft structure by aligning the first positioning groove, the second positioning groove, the outer bonding strip, and the inner bonding strip with each other. At the same time, the thread of the outer wall of the outer bonding strip is aligned with the thread of one end of the camshaft body, and then the fixing nut is installed on the outer wall of the outer bonding strip and the camshaft body, thereby realizing the rapid installation of the gear disk on the outer wall of the camshaft structure.

[0019] During the operation of the camshaft structure, coolant or gas can enter the inlet groove, guide groove, flow divider groove and gas divider groove for discharge, so that the liquid or gas can carry away the heat accumulated inside the cam body and avoid excessive heat inside the cam body causing deformation. Attached Figure Description

[0020] Figure 1 is a three-dimensional structural diagram of this utility model;

[0021] Figure 2 is a three-dimensional cross-sectional view of the camshaft structure of this utility model;

[0022] Figure 3 is a three-dimensional unfolded schematic diagram of the side transmission gear structure of this utility model.

[0023] Figure label:

[0024] 1. Camshaft structure; 101. Camshaft body; 102. Liquid inlet groove; 103. Cam body; 104. First positioning groove; 105. Second positioning groove; 106. Guide ring; 107. Flow guide groove; 108. Flow divider groove; 109. Gas divider groove; 2. Side transmission gear structure; 201. Gear disk; 202. Fitting ring; 203. Outer fitting strip; 204. Inner fitting strip; 205. Fixing nut. Detailed Implementation

[0025] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, which show several embodiments of the utility model. However, the utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of the utility model will be more thorough and complete.

[0026] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "page", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0027] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0028] In this utility model, unless otherwise explicitly specified and limited, the terms "installed," "connected," "linked," "fixed," "provided with," and "located in" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances. Embodiments

[0029] Referring to Figures 1-3, a camshaft that is easy to assemble includes a camshaft structure 1, wherein a side transmission gear structure 2 is provided on one side of the camshaft structure 1.

[0030] The side-drive gear structure 2 includes a gear disk 201. A fitting ring 202 is provided on the outer wall of the gear disk 201. An outer fitting strip 203 is provided between the fitting ring 202 and the outer side of the gear disk 201. An inner fitting strip 204 is provided between the fitting ring 202 and the inner side of the gear disk 201. The outer wall of the outer fitting strip 203 is threaded, and a fixing nut 205 is provided on the outer wall of the outer fitting strip 203. The outer fitting strip 203 is threadedly connected to the fixing nut 205. The outer wall of the outer fitting strip 203 fits against the inner wall of the second positioning groove 105, and the inner wall of the inner fitting strip 204 fits against the inner wall of the first positioning groove 104. When installing the gear disk 201, the inner fitting strip 204 on the inner side of the gear disk 201 is aligned with the first positioning groove 104, and the outer fitting strip 203 is aligned with the second positioning groove 105. The thread on the outer wall of the outer fitting strip 203 is aligned with the thread on the outer wall of the camshaft body 101. Then, the fixing nut 205 is installed between the two sets of threads to stably fix the gear disk 201 and the camshaft body 101. The fixing nut 205 can only be installed after the threads are aligned, so as to maintain the alignment between the gear disk 201 and the camshaft body 101 and avoid displacement of the gear disk 201 during installation.

[0031] Furthermore, the camshaft structure 1 includes a camshaft body 101. An inlet groove 102 is formed inside the camshaft body 101. A guide ring 106 is provided at one end of the inlet groove 102, and a rotary sealing ring is provided between the guide ring 106 and the inlet groove 102. A connecting structure is provided at the other end of the inlet groove 102. The connecting structure includes a first positioning groove 104 and a second positioning groove 105. The first positioning groove 104 is formed on the inner wall of the inlet groove 102, and the second positioning groove 105 is formed on the outer wall of the camshaft body 101. The outer wall of the camshaft body 101 is threaded. A cam body 103 is provided on the outer wall of the camshaft body 101, and a guide groove 107 is formed inside the cam body 103. The groove 107 is connected to the cam body 103. The cam body 103 has a flow divider groove 108 inside, which is connected to the guide groove 107. The cam body 103 has gas distribution grooves 109 on both sides, which are connected to the flow divider groove 108. The number of cam bodies 103 is set to be multiple. External gas or liquid enters the liquid inlet groove 102 through the cam body 103. At the same time, the gas or liquid enters the guide groove 107 and then the flow divider groove 108. Then the gas or liquid is discharged through the gas distribution groove 109. The gas or liquid drives the heat inside the cam body 103, which avoids the heat from accumulating inside the cam body 103 during the contact between the cam body 103 and the valve, causing the cam body 103 to deform.

[0032] The above-described embodiments are merely illustrative of certain implementations of this utility model, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A camshaft that is easy to assemble, characterized in that: The camshaft structure (1) includes a side drive gear structure (2) on one side of the camshaft structure (1); the side drive gear structure (2) includes a gear disk (201), a fitting ring (202) is provided on the outer wall of the gear disk (201), an outer fitting strip (203) is provided between the fitting ring (202) and the outer side of the gear disk (201), an inner fitting strip (204) is provided between the fitting ring (202) and the inner side of the gear disk (201), the outer wall of the outer fitting strip (203) is provided with threads, and a fixing nut (205) is provided on the outer wall of the outer fitting strip (203), and the outer fitting strip (203) is threadedly connected to the fixing nut (205).

2. The camshaft with convenient assembly according to claim 1, characterized in that: The camshaft structure (1) includes a camshaft body (101), an inlet groove (102) is provided inside the camshaft body (101), a guide ring (106) is provided at one end of the inlet groove (102), a rotary sealing ring is provided between the guide ring (106) and the inlet groove (102), and a connecting structure is provided at the other end of the inlet groove (102).

3. The camshaft with convenient assembly according to claim 2, characterized in that: The connection structure includes a first positioning groove (104) and a second positioning groove (105). The first positioning groove (104) is opened on the inner wall of the liquid inlet groove (102), and the second positioning groove (105) is opened on the outer wall of the camshaft body (101). The outer wall of the camshaft body (101) is provided with threads.

4. A camshaft that is easy to assemble according to claim 2, characterized in that: The outer wall of the camshaft body (101) is provided with a cam body (103), and the interior of the cam body (103) is provided with a guide groove (107), which is connected to the cam body (103). The interior of the cam body (103) is provided with a flow divider groove (108), which is connected to the guide groove (107).

5. A camshaft that is easy to assemble according to claim 4, characterized in that: The cam body (103) has air distribution grooves (109) on both sides, the air distribution grooves (109) are connected to the flow distribution grooves (108), and the number of cam bodies (103) is set to multiple.

6. A camshaft that is easy to assemble according to claim 1, characterized in that: The outer wall of the outer bonding strip (203) is bonded to the inner wall of the second positioning groove (105), and the inner wall of the inner bonding strip (204) is bonded to the inner wall of the first positioning groove (104).

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