Sealing ring for oil injection ring of motor

Abstract

The invention discloses a motor oil injection ring sealing ring which comprises a sealing ring body made of HNBR, the side wall of the sealing ring body protrudes outwards to form a sealing protruding block clamped into an oil injection ring sealing groove, and the end of the surface of the sealing protruding block extends towards the end of the sealing ring body to form an arc face. The annular elastic framework is arranged on the inner side of the sealing ring body so as to elastically support the sealing ring body during sealing; by means of the sealing ring body made of the HNBR, the annular elastic framework and the heat conduction assembly, the sealing ring has excellent oil resistance and aging resistance effects, the elastic framework can well support the sealing ring body during use, the supporting elasticity of the sealing ring is improved, the stable effect during sealing is guaranteed, and the service life of the sealing ring is prolonged. And heat can be transferred, it is guaranteed that the heat is evenly distributed when the sealing ring body is used, damage caused by excessive local heat is avoided, installation is convenient, and the practicability of the device is improved.

Description

Technical Field

[0001] The invention specifically relates to a motor oil injection ring seal. Background Art

[0002] Fuel vehicles are facing problems such as "environmental pollution" and "energy shortage", so they are gradually being replaced by new energy vehicles. The development and use of drive motor systems, one of the three key components in new energy vehicles, has increased significantly. The oil spray ring is a part of the motor, also known as the oil ring or oil distribution ring. It is an important component of the stator cooling oil circuit in the oil-cooled motor. Its main function is to cool the stator end by spraying to ensure the normal heat dissipation and operation of the motor. The oil spray ring is generally composed of an oil ring body, a sealing ring and an oil spray hole on the body.

[0003] During the use of existing oil injection ring sealing rings, the material of the sealing ring is relatively single, and it is mostly made of ordinary rubber such as chloroprene rubber or nitrile rubber. The oil resistance and aging resistance are not good, which affects the service life. In addition, since the sealing ring is made of a single material and is relatively soft, it is not convenient to provide high-strength stable elastic support during long-term use. There is also a risk of damage caused by local heat due to the influence of the motor. For this reason, we propose a motor oil injection ring sealing ring. Summary of the invention

[0004] The purpose of the present invention is to provide a motor oil injection ring seal to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a motor oil injection ring seal, comprising:

[0006] The sealing ring body is made of HNBR, the side wall of the sealing ring body protrudes outward to form a sealing convex block that is inserted into the sealing groove of the oil injection ring, and the end of the surface of the sealing convex block extends toward the end of the sealing ring body to form an arc surface;

[0007] The ring-shaped elastic frame is arranged inside the sealing ring body to elastically support the sealing ring body during sealing;

[0008] The heat conducting component is arranged on the elastic frame to transfer heat along the annular elastic frame so that the heat is evenly dispersed inside the sealing ring body.

[0009] Preferably, the elastic skeleton includes a first elastic sheet, a second elastic sheet, a connecting rubber and a slot, the second elastic sheet has slots at both ends, the first elastic sheet is inserted into the inner side of the slot, and the end of the first elastic sheet is installed with a connecting rubber that cooperates with the slot through a groove.

[0010] Preferably, a plurality of the first elastic sheets and a plurality of the second elastic sheets are provided, and the plurality of the first elastic sheets and the second elastic sheets are connected end to end to form a ring shape.

[0011] Preferably, a through groove is formed on the inner side of the first elastic sheet along the circumferential direction.

[0012] Preferably, the cross-sections of the first elastic sheet and the second elastic sheet are both in a "C" shape.

[0013] Preferably, the heat-conducting component includes a first heat-conducting sheet, a second heat-conducting sheet and a steel wire strip, the first heat-conducting sheet and the second heat-conducting sheet are arranged at intervals along the circumference of the sealing ring body, and the first heat-conducting sheet and the second heat-conducting sheet are both fixed to the elastic skeleton, a side wall of the first heat-conducting sheet is provided with a steel wire strip that cooperates with the second elastic sheet, and the outer surface of the steel wire strip is provided with a silver-plated layer for heat conduction.

[0014] Preferably, the first heat conductive sheet is made of one or more of metal, silicone rubber or carbon fiber.

[0015] Preferably, the thickness of the sealing ring body at the upper and lower ends is the same, and the end of the sealing ring body is provided with a chamfer.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] This patent avoids the problem of traditional sealing rings being made of a single material and having poor oil resistance and aging resistance by using a sealing ring body made of HNBR, a ring-shaped elastic skeleton and a heat-conducting component. The sealing ring in this patent has excellent oil resistance and aging resistance, and the elastic skeleton can well support the sealing ring body when in use, improve the supporting elasticity of the sealing ring, ensure the stable effect during sealing, transfer heat, ensure uniform heat distribution of the sealing ring body when in use, avoid damage caused by excessive local heat, and is easy to install, thereby increasing the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the present invention;

[0019] Figure 2 It is a schematic diagram of the cross-sectional structure of the sealing ring body of the present invention;

[0020] Figure 3 It is a schematic diagram of the elastic skeleton structure of the present invention;

[0021] Figure 4 It is a schematic diagram of the structure of the heat conduction component of the present invention;

[0022] Figure 5 It is a schematic diagram of the card slot structure of the present invention.

[0023] In the figure: 1. Sealing ring body; 101. Sealing protrusion; 102. Arc surface; 2. Elastic skeleton; 201. First elastic sheet; 202. Second elastic sheet; 203. Connecting rubber; 204. Slot; 205. Through slot; 3. Heat-conducting component; 301. First heat-conducting sheet; 302. Second heat-conducting sheet; 303. Steel wire strip. DETAILED DESCRIPTION

[0024] The following will be combined with the 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0025] See also Figure 1-Figure 5 The present invention provides a technical solution: a motor oil injection ring seal, comprising:

[0026] The sealing ring body 1 is made of HNBR, which avoids the single material of the traditional sealing ring, poor oil resistance and aging resistance. The side wall of the sealing ring body 1 bulges outward to form a sealing protrusion 101 that is inserted into the sealing groove of the oil injection ring. The end of the surface of the sealing protrusion 101 extends toward the end of the sealing ring body 1 to form an arc surface 102, which is easy to install;

[0027] The ring-shaped elastic skeleton 2 is arranged inside the sealing ring body 1 to elastically support the sealing ring body 1 during sealing. The elastic skeleton 2 is made of metal or plastic to improve the rigidity of the sealing ring body 1 and ensure a good elastic support effect.

[0028] The heat conducting component 3 is arranged on the elastic skeleton 2 to transfer heat along the annular elastic skeleton 2 so that the heat is evenly dispersed inside the sealing ring body 1, so as to make the heat evenly distributed and avoid damage caused by excessive local heat.

[0029] Preferably, the elastic skeleton 2 includes a first elastic sheet 201, a second elastic sheet 202, a connecting rubber 203 and a slot 204. The second elastic sheet 202 has slots 204 at both ends. The first elastic sheet 201 is inserted into the inner side of the slot 204, and a connecting rubber 203 that cooperates with the slot 204 is installed at the end of the first elastic sheet 201 through a groove, so as to facilitate better elastic effect to support the sealing ring body 1 and ensure good elasticity during sealing.

[0030] Preferably, a plurality of the first elastic sheets 201 and the second elastic sheets 202 are provided, and the plurality of first elastic sheets 201 and the second elastic sheets 202 are connected end to end to form a ring shape, so as to realize a stable elastic supporting force for the annular sealing ring body 1 .

[0031] Preferably, a through groove 205 is formed on the inner side of the first elastic sheet 201 along the circumferential direction, so that the first elastic sheet 201 has a better elastic deformation effect.

[0032] Preferably, the cross-sections of the first elastic piece 201 and the second elastic piece 202 are both “C”-shaped, so as to facilitate the elastic deformation of the first elastic piece 201 and the second elastic piece 202 .

[0033] Preferably, the heat-conducting component 3 includes a first heat-conducting sheet 301, a second heat-conducting sheet 302 and a steel wire strip 303. The first heat-conducting sheet 301 and the second heat-conducting sheet 302 are arranged at intervals along the circumference of the sealing ring body 1, and the first heat-conducting sheet 301 and the second heat-conducting sheet 302 are fixed to the elastic skeleton 2. A steel wire strip 303 matching with the second elastic sheet 202 is arranged on one side wall of the first heat-conducting sheet 301, and a silver-plated layer for heat conduction is arranged on the outer surface of the steel wire strip 303 to facilitate heat conduction and make the heat distribution uniform.

[0034] Preferably, the first heat conducting sheet 301 is made of one or more of metal, silicone rubber or carbon fiber to facilitate better heat conduction effect.

[0035] Preferably, the thickness of the sealing ring body 1 at the upper and lower ends is the same, and the end of the sealing ring body 1 is provided with a chamfer to facilitate installation.

[0036] The working principle and use process of the present invention are as follows: when in use, the sealing ring body 1 is made of HNBR rubber, which has excellent aging resistance and oil resistance. The sealing ring body 1 is mounted on the inner side of the sealing groove on the outer surface of the injection ring. The elastic effect of the side wall of the sealing ring body 1 can be improved by the C-shaped first elastic sheet 201 and the second elastic sheet 202, thereby ensuring stable elastic support during sealing. In addition, a connecting rubber 203 is provided at the connection between the ends of the first elastic sheet 201 and the second elastic sheet 202, so that the ring formed by splicing multiple first elastic sheets 201 and the second elastic sheets 202 has better elastic expansion and contraction, thereby providing good support for the annular sealing ring body 1. When external heat is transferred to the sealing ring body 1, the heat can be transferred along the annular sealing ring body 1 through the first heat conductive sheet 301, the second heat conductive sheet 302 and the steel wire strip 303, so that the heat is evenly distributed on the inner side of the sealing ring body 1, thereby avoiding thermal fatigue damage to the sealing ring body 1 caused by excessive heat.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A motor oil injection ring seal, characterized in that: include: A sealing ring body (1) made of HNBR, the side wall of the sealing ring body (1) protrudes outward to form a sealing convex block (101) that is inserted into the sealing groove of the oil injection ring, and the end of the surface of the sealing convex block (101) extends toward the end of the sealing ring body (1) to form an arc surface (102); An annular elastic frame (2) is arranged inside the sealing ring body (1) to elastically support the sealing ring body (1) during sealing; The heat-conducting component (3) is arranged on the elastic frame (2) to transfer heat along the annular elastic frame (2) so that the heat is evenly dispersed inside the sealing ring body (1).

2. The motor oil injection ring seal according to claim 1, characterized in that: The elastic skeleton (2) comprises a first elastic sheet (201), a second elastic sheet (202), a connecting rubber (203) and a card slot (204); the second elastic sheet (202) has card slots (204) at both ends; the first elastic sheet (201) is inserted into the inner side of the card slot (204); and the end of the first elastic sheet (201) is provided with a connecting rubber (203) matching the card slot (204) through a groove.

3. The motor oil injection ring seal according to claim 2, characterized in that: A plurality of the first elastic sheets (201) and the second elastic sheets (202) are provided, and the plurality of the first elastic sheets (201) and the second elastic sheets (202) are connected end to end to form a ring shape.

4. The motor oil injection ring seal according to claim 2, characterized in that: A through groove (205) is formed on the inner side of the first elastic sheet (201) along the circumferential direction.

5. The motor oil injection ring seal according to claim 2, characterized in that: The cross-sections of the first elastic sheet (201) and the second elastic sheet (202) are both "C"-shaped.

6. The motor oil injection ring seal according to claim 1, characterized in that: The heat-conducting component (3) comprises a first heat-conducting sheet (301), a second heat-conducting sheet (302) and a steel wire strip (303); the first heat-conducting sheet (301) and the second heat-conducting sheet (302) are arranged at intervals along the circumference of the sealing ring body (1); the first heat-conducting sheet (301) and the second heat-conducting sheet (302) are both fixed to the elastic skeleton (2); a steel wire strip (303) matching with the second elastic sheet (202) is arranged on one side wall of the first heat-conducting sheet (301); and a silver-plated layer for heat conduction is arranged on the outer surface of the steel wire strip (303).

7. The motor oil injection ring seal according to claim 6, characterized in that: The material of the first heat conducting sheet (301) is one or more of metal, silicone rubber or carbon fiber.

8. The motor oil injection ring seal according to claim 1, characterized in that: The thickness of the sealing ring body (1) is the same at the upper and lower ends, and the end of the sealing ring body (1) is provided with a chamfer.

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