Motor rear end cover sealing structure
By installing a fixing ring and a rubber ring on the rear end cover of the motor, after being fixed by bolts, the rear end cover drives the fixing ring and rubber ring to move into the inside of the motor body, forming a double-layer seal, which solves the problem of insufficient sealing performance of the existing motor rear end cover, significantly improves the sealing performance and prevents external impurities from entering.
Patent Information
- Application Number
- CN202421390110.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-18
- Publication Date
- 2025-05-16
- Estimated Expiration
- 2034-06-18
AI Technical Summary
The sealing performance of the rear end cover of the existing motor is insufficient, especially when the stress is uneven, the sealing properties of a single sealing ring are poor, resulting in external impurities entering the motor and causing damage.
A sealing structure for the rear end cover of the motor is designed. By installing a fixing ring and a rubber ring on the rear end cover, the rear end cover drives the fixing ring and rubber ring to move into the inside of the motor body, forming a double-layer seal to enhance the sealing performance.
The double-layer seal between the rear end cover and the motor body is realized, which significantly improves the sealing performance, effectively prevents external impurities from entering the motor, and protects the stability and integrity of the motor.
Smart Images
Figure CN222884432U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a rear end cover sealing structure, in particular to a motor rear end cover sealing structure, belonging to the technical field of motor components. Background Art
[0002] A motor is an electromagnetic device that realizes the conversion or transmission of electric energy according to the law of electromagnetic induction. Its main function is to generate driving torque. As a power source for electrical appliances or various machines, the motor is mainly composed of a stator, a rotor, a front cover, a rear cover, a cover, etc. The rear cover is used to support and fix the internal components of the motor to ensure the stability and integrity of the structure. The rear cover also plays a sealing role to prevent external impurities from entering the motor and protect the motor from damage.
[0003] However, the rear end cover is usually fixed by bolts, and since the material of the rear end cover is a hard material, there is a gap between the rear end cover and the motor body after fixing with screws. The rear end cover and the motor are usually sealed by a single sealing ring. When the force is uneven, the sealing performance of the single sealing ring is poor. Utility Model Content
[0004] The purpose of the utility model is to provide a sealing structure for the rear end cover of a motor in order to solve the above-mentioned problem, so that a sealing condition is formed between the rear end cover and the motor body, and at the same time, the rear end cover drives the second rubber ring on its outer edge to move toward the inside of the motor body until it is close to the outer edge of the motor body, thereby achieving a double-layer seal, further enhancing the sealing performance of the rear end cover, and effectively preventing external impurities from entering the interior of the motor and causing damage to the motor body.
[0005] The utility model achieves the above-mentioned purpose through the following technical solutions: a sealing structure of a motor rear end cover, comprising a motor body, a rear end cover being installed at the rear end of the motor body, a sealing structure being installed on the rear end cover, the sealing structure comprising a fixing ring, a circle of fixing ring being fixedly connected to the inner side of the outer edge of one end of the rear end cover facing the motor body, a first rubber ring being engaged with the end of the fixing ring, a first groove being provided on the bottom surface of the outer edge of the rear end cover, a second rubber ring being engaged in the first groove, the first rubber ring and the second rubber ring both being in conflict with the motor body, three fixing blocks being fixedly connected to the rear end cover, three connecting strips being fixedly connected to the motor body, and the adjacent fixing blocks 6 and connecting strips 7 being fixed by bolts.
[0006] Preferably, the cross section of the end of the fixing ring is an inverted "concave" structure, the cross sections of the first rubber ring and the second rubber ring are both "convex" structures, and the rear end of the motor body is a stepped structure.
[0007] Preferably, a through hole is opened at the center of the rear end cover and a fixing ring is fixedly connected in the through hole, a rotating shaft is rotatably connected inside the fixing ring, and a cover shell is fixedly connected to one end of the rear end cover away from the motor body.
[0008] Preferably, a third rubber ring and a fourth rubber ring are sequentially installed in the fixing ring, and the third rubber ring and the fourth rubber ring are both wrapped around the rotating shaft.
[0009] Preferably, a positioning structure is installed on the rear end cover, and the positioning structure includes a first protrusion, three first protrusions are fixedly connected to the edge of the rear end cover, the bottom end of the first protrusion is fixedly connected to a positioning rod, and the outside of the motor body is fixedly connected to a second protrusion, and a slot is formed on the second protrusion, and adjacent positioning rods are engaged with the slots.
[0010] Preferably, the three first bumps are distributed in a circular array, the three second bumps are distributed in a circular array, and the spacing between the three first bumps is the same as the spacing between the three second bumps.
[0011] Preferably, the cross-section of one end of the positioning rod facing the slot is a trapezoidal structure, the three fixing blocks are distributed in a circular array, and the three connecting strips are distributed in a circular array.
[0012] Preferably, two mounting seats are installed on the outer wall of the motor body, and waist-shaped grooves are provided on the mounting seats.
[0013] The beneficial effects of the utility model are as follows: a circle of fixing ring is fixedly connected to the inner side of the outer edge of one end of the rear end cover facing the motor body, a first rubber ring is clamped at the end of the fixing ring, a first groove is provided on the bottom surface of the outer edge of the rear end cover, a second rubber ring is clamped in the first groove, and the first rubber ring and the second rubber ring both interfere with the motor body; the fixing block and the connecting strip are fixedly connected by bolts, so that the rear end cover is fixed to the rear end of the motor body, and when the rear end cover is fixed to the rear end of the motor body, the rear end cover drives the fixing ring to move toward the inside of the motor body, and the fixing ring drives the first rubber ring to press against the end of the motor body, so that a sealing condition is formed between the rear end cover and the motor body, and at the same time, the rear end cover drives the second rubber ring on its outer edge to move toward the inside of the motor body until it presses against the outer edge of the motor body, thereby achieving double-layer sealing, further enhancing the sealing performance of the rear end cover, and effectively preventing external impurities from entering the inside of the motor and causing damage to the motor body. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0015] Figure 2 for Figure 1 An enlarged schematic diagram of part A is shown;
[0016] Figure 3 It is a cross-sectional view of the rear end cover of the utility model;
[0017] Figure 4 for Figure 3 An enlarged schematic diagram of part B is shown;
[0018] Figure 5 for Figure 3 An enlarged schematic diagram of part C is shown;
[0019] Figure 6 It is a schematic diagram of the connection structure between the rear end cover and the fixing block of the utility model.
[0020] In the figure: 1. motor body; 2. rear end cover; 3. fixing ring; 4. rotating shaft; 5. cover shell; 6. fixing block; 7. connecting strip; 8. sealing structure; 801. fixing ring; 802. first groove; 803. first rubber ring; 804. second rubber ring; 9. positioning structure; 901. first protrusion; 902. positioning rod; 903. second protrusion; 904. slot; 10. mounting seat; 11. third rubber ring; 12. fourth rubber ring; 13. waist-shaped groove. DETAILED DESCRIPTION
[0021] 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.
[0022] See also Figure 1-Figure 6As shown, a sealing structure of a rear end cover of a motor comprises a motor body 1, a rear end cover 2 is installed at the rear end of the motor body 1, a sealing structure 8 is installed on the rear end cover 2, the sealing structure 8 comprises a fixing ring 801, a circle of fixing ring 801 is fixedly connected to the inner side of the outer edge of one end of the rear end cover 2 facing the motor body 1, a first rubber ring 803 is clamped at the end of the fixing ring 801, a first groove 802 is opened on the bottom surface of the outer edge of the rear end cover 2, a second rubber ring 804 is clamped in the first groove 802, the first rubber ring 803 and the second rubber ring 804 both interfere with the motor body 1, three fixing blocks 6 are fixedly connected to the rear end cover 2, and three connecting strips 7 are fixedly connected to the motor body 1, and adjacent The fixing block 6 and the connecting strip 7 are fixed by bolts; the fixing block 6 and the connecting strip 7 are fixedly connected by bolts, so that the rear end cover 2 is fixed to the rear end of the motor body 1. When the rear end cover 2 is fixed to the rear end of the motor body 1, the rear end cover 2 drives the fixing ring 801 to move toward the inside of the motor body 1, and the fixing ring 801 drives the first rubber ring 803 to press against the end of the motor body 1, so that a sealing condition is formed between the rear end cover 2 and the motor body 1. At the same time, the rear end cover 2 drives the second rubber ring 804 on its outer edge to move toward the inside of the motor body 1 until it presses against the outer edge of the motor body 1, thereby achieving double-layer sealing, further strengthening the sealing performance of the rear end cover 2, and effectively preventing external impurities from entering the interior of the motor body 1 and causing damage to the motor body 1.
[0023] As a technical optimization solution of the utility model, the cross-section of the end of the fixing ring 801 is an inverted "concave" structure, the cross-sections of the first rubber ring 803 and the second rubber ring 804 are both "convex" structures, and the rear end of the motor body 1 is a stepped structure; it is convenient to install the first rubber ring 803 and the second rubber ring 804, so that the sealing performance of the first rubber ring 803 and the second rubber ring 804 is better.
[0024] As a technical optimization solution of the utility model, a through hole is opened at the center position of the rear end cover 2 and a fixing ring 3 is fixedly connected in the through hole, a rotating shaft 4 is rotatably connected inside the fixing ring 3, and a cover shell 5 is fixedly connected to the end of the rear end cover 2 away from the motor body 1, and a third rubber ring 11 and a fourth rubber ring 12 are sequentially installed in the fixing ring 3, and the third rubber ring 11 and the fourth rubber ring 12 are both wrapped around the rotating shaft 4; the third rubber ring 11 and the fourth rubber ring 12 are pressed inwardly against the rotating shaft, so that the rotating shaft 4 passes through the seal to prevent external impurities from entering the interior of the motor body 1 from here, and the rotating shaft 4 is sealed up and down by the third rubber ring 11 and the fourth rubber ring 12, thereby realizing a double-layer seal.
[0025] As a technical optimization scheme of the utility model, a positioning structure 9 is installed on the rear end cover 2, and the positioning structure 9 includes a first protrusion 901, and three first protrusions 901 are fixedly connected to the edge of the rear end cover 2, and a positioning rod 902 is fixedly connected to the bottom end of the first protrusion 901, and a second protrusion 903 is fixedly connected to the outside of the motor body 1, and a slot 904 is provided on the second protrusion 903, and adjacent positioning rods 902 are engaged with the slot 904; align the positioning rod 902 on the rear end cover 2 with the slot 904 on the motor body 1, and move the rear end cover 2 toward the direction of the motor body 1 until the three positioning rods 902 are respectively engaged in the adjacent slots 904, thereby achieving preliminary fixation of the rear end cover 2 and facilitating the quick installation of bolts.
[0026] As a technical optimization solution of the utility model, the three first protrusions 901 are distributed in a circular array, the three second protrusions 903 are distributed in a circular array, and the spacing between the three first protrusions 901 is the same as the spacing between the three second protrusions 903, thereby realizing the positioning function of the positioning rod 902.
[0027] As a technical optimization solution of the present invention, the cross-section of one end of the positioning rod 902 facing the slot 904 is a trapezoidal structure, which facilitates the positioning rod 902 to slide into the slot 904 and has a guiding effect on the positioning rod 902.
[0028] As a technical optimization solution of the utility model, the three fixing blocks 6 are distributed in a circular array, the three connecting strips 7 are distributed in a circular array, and the spacing between the three fixing blocks 6 is the same as the spacing between the three connecting strips 7; thereby, the adjacent fixing blocks 6 and connecting strips 7 can be connected by bolts, thereby achieving the fixing of the rear end cover 2 to the rear end of the motor body 1.
[0029] As a technical optimization solution of the utility model, two mounting seats 10 are installed on the outer wall of the motor body 1, and waist-shaped grooves 13 are opened on the mounting seats 10; the setting of the waist-shaped grooves 13 facilitates the installation of the motor body 1 and provides adjustment space for the installation of the motor body 1 on the equipment.
[0030] When the utility model is in use, first fix the fixing ring 3 in the through hole on the rear end cover 2, then align the positioning rod 902 on the rear end cover 2 with the slot 904 on the motor body 1, and move the rear end cover 2 in the direction of the motor body 1 until the three positioning rods 902 are respectively engaged in the adjacent slots 904, thereby achieving the preliminary fixation of the rear end cover 2, which is convenient for quick installation of bolts. When the positioning rods 902 are engaged in the slots 904, the fixing block 6 on the rear end cover 2 is automatically aligned with the connecting strip 7 on the motor body 1, and then the bolts are used to fix it, so that the rear end cover 2 is fixed to the rear end of the motor body 1, which is simple and convenient to operate and improves work efficiency. When the rear end cover 2 is fixed to the rear end of the motor body 1, the rear end cover 2 drives the fixing ring 80 1 moves toward the inside of the motor body 1, the fixing ring 801 drives the first rubber ring 803 to press against the end of the motor body 1, so that a sealing condition is formed between the rear end cover 2 and the motor body 1, and at the same time, the rear end cover 2 drives the second rubber ring 804 on its outer edge to move toward the inside of the motor body 1 until it presses against the outer edge of the motor body 1, thereby achieving double-layer sealing, further strengthening the sealing performance of the rear end cover 2, and effectively preventing external impurities from entering the inside of the motor body 1 and causing damage to the motor body 1; the third rubber ring 11 and the fourth rubber ring 12 press against the rotating shaft inwardly, so that the rotating shaft 4 passes through the seal, preventing external impurities from entering the inside of the motor body 1 from here, and the upper and lower sealing of the rotating shaft 4 is achieved by the third rubber ring 11 and the fourth rubber ring 12, so as to achieve double-layer sealing.
[0031] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-limiting from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.
[0032] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.
Claims
1. A sealing structure for a rear end cover of a motor, comprising a motor body (1), characterized in that: A rear end cover (2) is installed at the rear end of the motor body (1), and a sealing structure (8) is installed on the rear end cover (2). The sealing structure (8) comprises a fixing ring (801). A circle of fixing ring (801) is fixedly connected to the inner side of the outer edge of one end of the rear end cover (2) facing the motor body (1). A first rubber ring (803) is engaged at the end of the fixing ring (801). A first groove (802) is provided on the bottom surface of the outer edge of the rear end cover (2). A second rubber ring (804) is engaged in the first groove (802). Both the first rubber ring (803) and the second rubber ring (804) are in contact with the motor body (1). Three fixing blocks (6) are fixedly connected to the rear end cover (2), and three connecting strips (7) are fixedly connected to the motor body (1). Adjacent fixing blocks (6) and connecting strips (7) are fixed by bolts.
2. A sealing structure for a rear end cover of a motor according to claim 1, characterized in that: The cross section of the end of the fixing ring (801) is in an inverted "concave" shape, the cross sections of the first rubber ring (803) and the second rubber ring (804) are both in a "convex" shape, and the rear end of the motor body (1) is in a stepped structure.
3. The sealing structure of the rear end cover of a motor according to claim 1, characterized in that: A through hole is provided at the center of the rear end cover (2) and a fixing ring (3) is fixedly connected in the through hole; a rotating shaft (4) is rotatably connected inside the fixing ring (3); and a cover shell (5) is fixedly connected to one end of the rear end cover (2) away from the motor body (1).
4. A sealing structure for a rear end cover of a motor according to claim 3, characterized in that: A third rubber ring (11) and a fourth rubber ring (12) are sequentially installed in the fixing ring (3), and the third rubber ring (11) and the fourth rubber ring (12) are both wrapped around the rotating shaft (4).
5. The sealing structure of the rear end cover of a motor according to claim 1, characterized in that: A positioning structure (9) is installed on the rear end cover (2), and the positioning structure (9) comprises a first protrusion (901), three first protrusions (901) are fixedly connected to the edge of the rear end cover (2), a positioning rod (902) is fixedly connected to the bottom end of the first protrusion (901), and a second protrusion (903) is fixedly connected to the outside of the motor body (1), and a slot (904) is provided on the second protrusion (903), and adjacent positioning rods (902) are engaged with the slots (904).
6. A sealing structure for a rear end cover of a motor according to claim 5, characterized in that: The three first convex blocks (901) are distributed in a circular array, the three second convex blocks (903) are distributed in a circular array, and the spacing between the three first convex blocks (901) is the same as the spacing between the three second convex blocks (903).
7. The sealing structure of the rear end cover of a motor according to claim 5, characterized in that: The cross section of one end of the positioning rod (902) facing the slot (904) is a trapezoidal structure, the three fixing blocks (6) are distributed in a circular array, and the three connecting strips (7) are distributed in a circular array.
8. The sealing structure of the rear end cover of a motor according to claim 1, characterized in that: Two mounting seats (10) are installed on the outer wall of the motor body (1), and waist-shaped grooves (13) are provided on the mounting seats (10).