Low-friction crankshaft oil seal for automobile engine

Abstract

The utility model relates to the technical field of crankshaft oil seals, and discloses a low-friction crankshaft oil seal for an automobile engine, which comprises a circular ring, a positioning mechanism, a sealing lip and two fixing mechanisms, the positioning mechanism comprises a first accommodating shell, two first sliding plates, two clamping plates, a push plate, two connecting plates and two fixing plates, a first reset spring is fixedly arranged between the end faces of the opposite sides of the two first sliding plates, first cylinders are fixedly arranged on the two sides of the lower end face of the push plate, the lower sides of the outer end faces of the two first cylinders are slidably sleeved with cylinders, and the inner walls of the two cylinders are fixedly sleeved with rubber. According to the oil seal, due to the fact that the positioning mechanism is arranged, when the oil seal is used for installing a circular ring, other tools are not needed, more convenience is achieved, due to the fact that the two fixing mechanisms are arranged, when the sealing lip is damaged, the sealing lip can be replaced, the whole oil seal does not need to be replaced, and waste of resources is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of crankshaft oil seals, in particular to a low-friction crankshaft oil seal for automobile engines. Background Art

[0002] The crankshaft oil seal is an important component in the engine. Its main function is to prevent the lubricating oil from leaking out from the crankcase. It can also prevent external impurities such as dust and moisture from entering the crankcase, protect the internal parts of the engine, and ensure the normal operation of the engine. The crankshaft oil seal can effectively seal the space around the crankshaft with its special design and materials.

[0003] During the installation process of some existing crankshaft oil seals, it is necessary to first put a ring on the cylindrical driving surface, then align the protrusion on the cylindrical surface with the circular hole of the crankshaft and push it in, and finally use other objects to knock the ring, which is rather troublesome. In addition, the ring of this type of crankshaft oil seal is usually connected to the sealing lip. When the sealing lip is damaged, the entire oil seal needs to be replaced, resulting in a waste of resources.

[0004] Therefore, those skilled in the art provide a low-friction crankshaft oil seal for an automobile engine to solve the problems raised in the above background technology. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings existing in the prior art, and the proposed low-friction crankshaft oil seal for automobile engines, by setting a positioning mechanism, does not need to use other tools when installing the ring, which is more convenient. By setting two fixing mechanisms, when the sealing lip is damaged, the sealing lip can be replaced without replacing the entire oil seal, thereby reducing the waste of resources.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a low-friction crankshaft oil seal for an automobile engine, comprising a ring, a positioning mechanism, a sealing lip and two fixing mechanisms, wherein the positioning mechanism comprises a first accommodating shell, two first slide plates, two clamping plates, a push plate, two connecting plates and two fixing plates, a first return spring is fixedly arranged between the end surfaces of the two first slide plates on one side opposite to each other, first cylinders are fixedly arranged on both sides of the lower end surface of the push plate, cylinders are slidably sleeved on the lower sides of the outer end surfaces of the two first cylinders, and rubbers are fixedly sleeved on the inner walls of the two cylinders;

[0007] The two fixing mechanisms include two second accommodating shells, four positioning rods and two second slides. Second return springs are fixedly arranged between the two second slides and the two second accommodating shells. Second cylinders are fixedly arranged on the upper sides of the end surfaces on the opposite sides of the two second slides.

[0008] Through the above technical solution, the push plate is manually held and moved to push the two cylinders into the circular holes opened at the connection. At this time, the push plate is knocked, and the first cylinder enters the inner wall of the cylinder. At this time, the two fixed plates and the sealing lip are abutted against each other, thereby driving the ring to slide toward the end face of the connection. During the sliding process of the ring, a piece drives the sealing lip sleeve to be arranged on the end face of the connection. Finally, the two first slides are pulled toward the middle. At this time, the positioning mechanism can be removed from the ring. By manually pulling the second slides to both sides, the two second slides drive the second cylinder on the surface to leave the inner wall of the sealing lip, and the sealing lip can be removed.

[0009] Furthermore, the two first slide plates are respectively slidably disposed at the front and rear positions between the inner walls of both sides of the first accommodating shell, the two clamping plates are respectively fixedly connected to the two first slide plates, and the two clamping plates are both clamped with the circular ring;

[0010] Through the above technical solution, by pulling the two first slides toward the middle, the two first slides drive the two clamping plates to leave the inner wall of the ring, and then the positioning mechanism can be removed.

[0011] Furthermore, the two connecting plates are both fixedly connected to the push plate, and the two connecting plates are both slidably connected to the first accommodating shell;

[0012] Through the above technical solution, the push plate is manually held, and the push plate abuts against the inner wall of the first accommodating block, thereby driving the circular ring to move.

[0013] Furthermore, the two fixing plates are both fixedly connected to the push plate, and the two fixing plates are both movably connected to the sealing lip;

[0014] Through the above technical solution, by knocking the push plate, the push plate is pressed against the ring through the fixed plate, thereby driving the ring to slide to one side.

[0015] Furthermore, the lower end surfaces of the two second accommodating shells are respectively fixedly arranged on both sides of the inner bottom surface of the circular ring, the sealing lip is clamped with the circular ring, and the two second cylinders are both slidably connected with the sealing lip;

[0016] With the above technical solution, by pulling the two second slide plates to the opposite side, the two second slide plates drive the second cylinders on the surface to leave the inner wall of the sealing lip, and then the sealing lip can be removed.

[0017] Furthermore, the four positioning rods are fixedly connected to the two second accommodating shells in pairs, and the two second sliding plates are slidably arranged on opposite sides between the front and rear inner walls of the two second accommodating shells;

[0018] Through the above technical solution, the second slide plate slides between the two positioning rods, so that the second slide plate and the second accommodating shell are fixed together in the vertical direction.

[0019] The utility model has the following beneficial effects:

[0020] 1. The low-friction crankshaft oil seal for automobile engines proposed by the utility model is to hold the push plate and move it, push the two cylinders into the through holes opened at the connection, and then knock the push plate, so that the ring and the sealing lip are sleeved on the surface of the connection, and then manually pull the two first slide plates toward the middle, the two first slide plates drive the two clamping plates to leave the inner wall of the ring, and then the positioning mechanism can be removed. By setting the positioning mechanism, it is more convenient to install the ring without the help of other tools.

[0021] 2. The low-friction crankshaft oil seal for automobile engines proposed by the utility model can manually pull the two second slide plates to the opposite sides, and the two second slide plates respectively drive the two second cylinders on the surface to leave the inner wall of the sealing lip, then the sealing lip can be removed, and by setting two fixing mechanisms, when the sealing lip is damaged, the sealing lip can be replaced without replacing the entire oil seal, thus reducing waste of resources, and the sealing lip uses fluororubber, which can reduce friction loss. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the axial side of the utility model;

[0023] Figure 2 It is an explosion diagram of the utility model;

[0024] Figure 3 It is an exploded schematic diagram of the position mechanism of the utility model;

[0025] Figure 4 It is a schematic diagram of the axial side of the fixing mechanism of the utility model.

[0026] Legend:

[0027] 1. Ring; 2. Positioning mechanism; 3. Sealing lip; 4. Fixing mechanism; 201. First accommodating shell; 202. First slide plate; 203. First return spring; 204. Clamp plate; 205. Push plate; 206. Connecting plate; 207. Fixing plate; 208. First cylinder; 209. Cylinder; 210. Rubber; 401. Second accommodating shell; 402. Positioning rod; 403. Second slide plate; 404. Second return spring; 405. Second cylinder. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] Reference Figure 1-4 The utility model provides an embodiment: a low-friction crankshaft oil seal for an automobile engine, comprising a ring 1, a positioning mechanism 2, a sealing lip 3 and two fixing mechanisms 4, the positioning mechanism 2 comprising a first accommodating shell 201, two first slide plates 202, two clamping plates 204, a push plate 205, two connecting plates 206 and two fixing plates 207, first cylinders 208 are fixedly arranged on both sides of the lower end surface of the push plate 205, cylinders 209 are slidably sleeved on the lower sides of the outer end surfaces of the two first cylinders 208, rubbers 210 are fixedly sleeved on the inner walls of the two cylinders 209, the two connecting plates 206 are fixedly connected to the push plate 205, the two connecting plates 206 are slidably connected to the first accommodating shell 201, the two fixing plates 207 are fixedly connected to the push plate 205, and the two fixing plates 207 are movably connected to the sealing lip 3.

[0030] By manually holding the push plate 205 and moving it, the two cylinders 209 are pushed into the circular holes opened at the connection. When the push plate 205 is moved, the push plate 205 and the inner wall of the first accommodating block abut against each other, thereby driving the ring 1 to move together. At this time, the push plate 205 is knocked, and the first cylinder 208 enters the inner wall of the cylinder 209. At this time, the two fixed plates 207 and the sealing lip 3 abut against each other, thereby driving the ring 1 to slide toward the end face of the connection. During the sliding process of the ring 1, the sealing lip 3 is driven to be sleeved on the end face of the connection. By arranging rubber 210 in the inner wall of the cylinder 209, the friction between the first cylinder 208 and the cylinder 209 is increased, so that when the push plate 205 is not knocked, the first cylinder 208 and the cylinder 209 are connected together.

[0031] A first return spring 203 is fixedly arranged between the end surfaces of the two first slides 202 on one side opposite to each other. The two first slides 202 are respectively slidably arranged at the front and rear positions between the inner walls of the first accommodating shell 201 on both sides. The two clamping plates 204 are respectively fixedly connected to the two first slides 202. The two clamping plates 204 are both clamped with the ring 1. By pulling the two first slides 202 toward the middle, the two first slides 202 drive the two clamping plates 204 to leave the inner wall of the ring 1. At this time, the two first slides 202 continue to be squeezed while the push plate 205 is pulled to the front side. During the movement of the push plate 205, the push plate 205 is driven to move by the resistance of the end faces. At this time, the positioning mechanism 2 can be removed.

[0032] The two fixing mechanisms 4 include two second accommodating shells 401, four positioning rods 402 and two second slides 403. A second return spring 404 is fixedly arranged between the two second slides 403 and the two second accommodating shells 401. A second cylinder 405 is fixedly arranged on the upper side of the end surfaces of the two second slides 403 on the opposite side. The lower end surfaces of the two second accommodating shells 401 are respectively fixedly arranged on both sides of the inner bottom surface of the ring 1. The sealing lip 3 is clamped with the ring 1. The two second cylinders 405 are both slidably connected with the sealing lip 3. The four positioning rods 402 are fixedly connected with the two second accommodating shells 401 in pairs, and the two second slides 403 are respectively slidably arranged on the opposite side between the front and rear inner walls of the two second accommodating shells 401.

[0033] When the sealing lip 3 is damaged, first remove the ring 1, and then manually pull the two second slides 403 to both sides. The two second slides 403 respectively drive the second cylinders 405 on the surface to leave the inner wall of the sealing lip 3. At this time, the sealing lip 3 can be removed, and then the new sealing lip 3 is placed on the surface of the ring 1. Two protrusions are provided on the surface of the ring 1, and two through holes are opened on the surface of the hard plate of the sealing lip 3 to facilitate the positioning of the new sealing lip 3.

[0034] Working principle: manually hold the push plate 205 to move, push the two cylinders 209 into the through holes opened at the connection, and then knock the push plate 205, the push plate 205 drives the ring 1 to move on the surface of the crankshaft, when the sealing lip 3 is sleeved on the surface of the crankshaft, manually pull the two first slides 202 toward the middle, the two first slides 202 drive the two clamping plates 204 to leave the inner wall of the ring 1, then the positioning mechanism 2 can be removed, when the sealing lip 3 is damaged, first remove the ring 1, and then pull the two second slides 403 to the opposite side, the two second slides 403 drive the second cylinder 405 on the surface to leave the inner wall of the sealing lip 3, then the sealing lip 3 can be removed.

[0035] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A low-friction crankshaft oil seal for an automobile engine, comprising a ring (1), a positioning mechanism (2), a sealing lip (3) and two fixing mechanisms (4), characterized in that: The positioning mechanism (2) comprises a first accommodating shell (201), two first slide plates (202), two clamping plates (204), a push plate (205), two connecting plates (206) and two fixed plates (207); a first return spring (203) is fixedly arranged between the end surfaces of the two first slide plates (202) on opposite sides; first cylinders (208) are fixedly arranged on both sides of the lower end surfaces of the push plates (205); cylinders (209) are slidably sleeved on the lower sides of the outer end surfaces of the two first cylinders (208); and rubber (210) is fixedly sleeved on the inner walls of the two cylinders (209); The two fixing mechanisms (4) comprise two second accommodating shells (401), four positioning rods (402) and two second slide plates (403); a second return spring (404) is fixedly arranged between the two second slide plates (403) and the two second accommodating shells (401); and a second cylinder (405) is fixedly arranged on the upper sides of the end surfaces of the two second slide plates (403) on one side opposite to the other.

2. The low friction crankshaft oil seal for automobile engine according to claim 1, characterized in that: The two first slide plates (202) are respectively slidably arranged at the front and rear positions between the inner walls on both sides of the first accommodating shell (201), the two clamping plates (204) are respectively fixedly connected to the two first slide plates (202), and the two clamping plates (204) are both clamped to the ring (1).

3. The low friction crankshaft oil seal for automobile engine according to claim 1, characterized in that: The two connecting plates (206) are both fixedly connected to the push plate (205), and the two connecting plates (206) are both slidably connected to the first accommodating shell (201).

4. The low friction crankshaft oil seal for automobile engine according to claim 1, characterized in that: The two fixed plates (207) are both fixedly connected to the push plate (205), and the two fixed plates (207) are both movably connected to the sealing lip (3).

5. The low friction crankshaft oil seal for automobile engine according to claim 1, characterized in that: The lower end surfaces of the two second containing shells (401) are respectively fixedly arranged on both sides of the inner bottom surface of the circular ring (1), the sealing lip (3) is clamped with the circular ring (1), and the two second cylinders (405) are both slidably connected with the sealing lip (3).

6. The low friction crankshaft oil seal for automobile engine according to claim 1, characterized in that: The four positioning rods (402) are fixedly connected to the two second accommodating shells (401) in pairs, respectively, and the two second sliding plates (403) are slidably arranged on opposite sides between the front and rear inner walls of the two second accommodating shells (401).

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