Spark plug oil seal

Abstract

The utility model discloses a spark plug oil seal, which relates to the technical field of oil seals and comprises a rubber main body and a plastic framework fixedly connected to the periphery of the rubber main body, the rubber main body comprises a rubber body, and a framework lower clamping lug and a framework upper clamping lug which are connected with the plastic framework are arranged on the lower portion of the outer side of the rubber body. Framework clamping grooves used for installing a plastic framework are formed in the outer sides of the framework lower clamping lug and the framework upper clamping lug, a spring clamping groove is formed in the upper portion of the outer side of the rubber body, a spring is installed at the position of the spring clamping groove, and an oil seal lip is formed in the upper portion of the inner side of the rubber body. The assembling tightness and stability between the rubber main body and the plastic framework are improved by arranging the framework upper connecting groove and the framework lower connecting groove, the framework protecting lugs play a role in supporting and limiting the mounting lower end of the plastic framework, and the assembling stability between the plastic framework and the rubber main body is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of oil seals, in particular to a spark plug oil seal. Background Art

[0002] Oil seals are mechanical components used to seal oil. They isolate the parts of the transmission that require lubrication from the output parts to prevent lubricating oil leakage. Spark plug oil seals are installed on the engine. Oil leakage from the spark plug oil seal will cause the voltage emitted by the spark plug to be too low, which is not conducive to ignition. Currently, the lip of spark plug oil seals on the market is generally made of rubber material. Installing a spring coil on the upper side of the spark plug oil seal lip can further improve its sealing performance. However, during the installation process of the spark plug oil seal, the connection between the oil seal frame and the rubber body is easy to fall off, making installation inconvenient and affecting its sealing performance. Utility Model Content

[0003] The utility model aims to provide a spark plug oil seal, which solves the technical problems that the connection between the oil seal frame and the rubber body is easy to fall off and the installation is inconvenient.

[0004] The purpose of the utility model can be achieved through the following technical solutions:

[0005] A spark plug oil seal comprises a rubber body and a plastic frame fixedly connected to the outer periphery of the rubber body, wherein the rubber body comprises a rubber body, a lower frame clamping ear and an upper frame clamping ear connected to the plastic frame are provided on the lower outer side of the rubber body, a frame clamping groove for mounting the plastic frame is provided on the outer side of the lower frame clamping ear and the upper frame clamping ear, a spring clamping groove is provided on the upper outer side of the rubber body, a spring is mounted at the spring clamping groove, and an oil seal lip is provided on the upper inner side of the rubber body.

[0006] Preferably, a spring ear for limiting the position of the spring is provided on the upper portion of the notch of the spring slot.

[0007] Preferably, the upper end of the oil seal lip is provided with a lip slope.

[0008] Preferably, the plastic frame includes a frame body, the upper inner portion of the frame body is provided with a frame upper connecting groove matched with the frame upper clamping ear, and the lower inner portion of the frame body is provided with a frame lower connecting groove matched with the frame lower clamping ear.

[0009] Preferably, the lower end of the lower ear of the frame is provided with a frame ear guard for limiting the position of the plastic frame, and the plastic frame is provided with a chamfer that matches the frame ear guard.

[0010] Preferably, the upper end of the skeleton body is provided with a mounting protrusion for limiting the installation of the oil seal.

[0011] Preferably, a mounting groove for evading installation of an oil seal is provided on the lower outer side of the skeleton body.

[0012] The beneficial effects of the present invention are as follows: by setting the upper connecting groove and the lower connecting groove of the skeleton, the tightness and stability of the assembly between the rubber body and the plastic skeleton are improved; the setting of the skeleton ear protector plays a supporting and limiting role for the installation lower end of the plastic skeleton, thereby improving the stability of the assembly between the plastic skeleton and the rubber body; by setting the installation protrusion, the accuracy of the oil seal installation is improved; by setting the installation groove, the tightness of the installation between the oil seal and the spark plug is ensured, thereby improving the stability of the oil seal installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present invention will be further described below with reference to the accompanying drawings.

[0014] Figure 1 It is a schematic structural diagram of the utility model as a whole;

[0015] Figure 2 It is a structural diagram of the rubber body of the utility model;

[0016] Figure 3 It is a structural diagram of the plastic skeleton of the utility model.

[0017] In the figure: 10, rubber body; 11, rubber body; 12, skeleton lower ear; 13, skeleton upper ear; 14, skeleton slot; 15, skeleton ear protector; 16, oil seal lip; 17, lip slope; 18, spring slot; 19, spring ear protector; 20, plastic skeleton; 21, skeleton body; 22, skeleton upper connecting groove; 23, skeleton lower connecting groove; 24, mounting protrusion; 25, mounting groove; 30, spring. DETAILED DESCRIPTION

[0018] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] See also Figure 1-Figure 3As shown, the utility model is a spark plug oil seal, comprising a rubber body 10 and a plastic skeleton 20 fixedly connected to the periphery of the rubber body 10, the rubber body 10 comprising a rubber body 11, a skeleton lower ear 12 and a skeleton upper ear 13 connected to the plastic skeleton 20 are provided on the lower outer portion of the rubber body 11, a skeleton clamping groove 14 for mounting the plastic skeleton 20 is provided on the outer side of the skeleton lower ear 12 and the skeleton upper ear 13, a spring clamping groove 18 is provided on the upper outer portion of the rubber body 11, a spring 30 is installed at the spring clamping groove 18, and an oil seal lip 16 is provided on the upper inner portion of the rubber body 11.

[0020] In an optional embodiment, a spring ear 19 for limiting the position of the spring 30 is provided on the upper portion of the notch of the spring retaining slot 18 .

[0021] It should be noted that the provision of the spring ear 19 is used to ensure the stable installation of the spring 30 .

[0022] In an optional embodiment, a lip slope 17 is provided at the upper end of the oil seal lip 16 .

[0023] It should be noted that the provision of the lip inclined surface 17 facilitates the installation of the oil seal and facilitates the addition of oil into the oil seal lip 16 .

[0024] In an optional embodiment, the plastic skeleton 20 includes a skeleton body 21, the inner upper part of the skeleton body 21 is provided with a skeleton upper groove 22 that cooperates with the skeleton upper ear 13, and the inner lower part of the skeleton body 21 is provided with a skeleton lower groove 23 that cooperates with the skeleton lower ear 12.

[0025] It should be noted that the provision of the upper frame connecting groove 22 and the lower frame connecting groove 23 improves the tightness and stability of the assembly between the rubber body 10 and the plastic frame 20 .

[0026] In an optional embodiment, a frame guard 15 for limiting the position of the plastic frame 20 is provided at the lower end of the frame lower latch 12 , and a chamfer matching the frame guard 15 is provided on the plastic frame 20 .

[0027] It should be noted that the provision of the skeleton ear protector 15 plays a supporting and limiting role for the installation lower end of the plastic skeleton 20 , thereby improving the stability of the assembly between the plastic skeleton 20 and the rubber body 10 .

[0028] In an optional embodiment, the upper end of the skeleton body 21 is provided with a mounting protrusion 24 for limiting the installation of the oil seal.

[0029] It should be noted that the installation accuracy of the oil seal is improved by providing the installation protrusion 24 .

[0030] In an optional embodiment, a mounting groove 25 for accommodating the oil seal is provided on the lower outer side of the skeleton body 21 .

[0031] It should be noted that the installation groove 25 is provided to ensure the tightness of the installation between the oil seal and the spark plug, thereby improving the stability of the oil seal installation.

[0032] The working principle of the present invention is as follows: first, the spring 30 is sleeved on the upper end of the rubber body 10, and then the spring 30 is pressed downward so that the spring 30 is clamped into the spring clamping groove 18, and the spring 30 is clamped by the spring ear 19, and then the skeleton body 21 is inserted into the outer lower part of the rubber body 11, and the lower part of the skeleton body 21 is inserted into the skeleton ear 15 to achieve fixed clamping, and the assembly of the oil seal is completed.

[0033] The above describes an embodiment of the present invention in detail. However, the above content is only a preferred embodiment of the present invention and should not be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent application of the present invention.

Claims

1. A spark plug oil seal, characterized in that: The invention comprises a rubber body (10) and a plastic skeleton (20) fixedly connected to the periphery of the rubber body (10), wherein the rubber body (10) comprises a rubber body (11), a skeleton lower clamping ear (12) and a skeleton upper clamping ear (13) connected to the plastic skeleton (20) are provided on the lower outer side of the rubber body (11), a skeleton clamping groove (14) for installing the plastic skeleton (20) is provided on the outer side of the skeleton lower clamping ear (12) and the skeleton upper clamping ear (13), a spring clamping groove (18) is provided on the upper outer side of the rubber body (11), a spring (30) is installed at the spring clamping groove (18), and an oil seal lip (16) is provided on the upper inner side of the rubber body (11).

2. A spark plug oil seal according to claim 1, characterized in that: A spring ear (19) for limiting the position of the spring (30) is provided on the upper portion of the notch of the spring clamping slot (18).

3. A spark plug oil seal according to claim 1, characterized in that: The upper end of the oil seal lip (16) is provided with a lip slope (17).

4. A spark plug oil seal according to claim 1, characterized in that: The plastic frame (20) includes a frame body (21), the upper inner portion of the frame body (21) is provided with a frame upper connection groove (22) that matches the frame upper clamp (13), and the lower inner portion of the frame body (21) is provided with a frame lower connection groove (23) that matches the frame lower clamp (12).

5. The spark plug oil seal according to claim 1, characterized in that: The lower end of the frame lower latch (12) is provided with a frame ear guard (15) for limiting the position of the plastic frame (20), and the plastic frame (20) is provided with a chamfer that matches the frame ear guard (15).

6. A spark plug oil seal according to claim 4, characterized in that: The upper end of the skeleton body (21) is provided with a mounting protrusion (24) for limiting the installation of the oil seal.

7. The spark plug oil seal according to claim 4, characterized in that: The lower outer portion of the skeleton body (21) is provided with an installation groove (25) for oil seal installation.

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