Sealing installation structure of actuator
By providing a first insertion groove and an extrusion block in the lower cover of the actuator, ensuring that the sealing ring fits the entire side of the lower cover, the problem of low waterproof performance caused by the gap between the waterproof groove of the existing actuator is solved, and higher waterproof performance is achieved.
Patent Information
- Application Number
- CN202421778802.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-25
- Publication Date
- 2025-06-10
- Estimated Expiration
- 2034-07-25
AI Technical Summary
The waterproof grooves of the existing actuators are made up by providing semicircular grooves on the upper and lower covers, resulting in a gap in the joint position, reducing the waterproof performance.
A sealing installation structure for an actuator is designed. By providing a first placement groove in the lower cover, the sealing ring is placed in the groove, so that the sealing ring ring is arranged on the outer periphery of the protruding hole, and the sealing ring is squeezed in the direction of the push rod extension to ensure that the sealing ring is fitted with the entire side of the lower cover.
This design effectively avoids the existence of waterproof groove gaps, improves the waterproof performance of the actuator, and enables the sealing ring to effectively abut the outer periphery of the push rod during the sliding of the push rod.
Smart Images
Figure CN222967204U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of actuators, and particularly relates to a sealing and mounting structure of an actuator. Background Art
[0002] Nowadays, with the development of the automotive industry and the increasing popularity of automobiles, people have higher and higher requirements for the performance of automobiles, and also pay more attention to the quickness, convenience and safety in various operations of vehicles. Therefore, it is particularly important for automobile enterprises to improve the vehicle structure and apply new technologies.
[0003] Among them, the actuator is one of the important components of an automobile. The main function of an automobile actuator is to convert a control signal into an actual mechanical or electrical action, so as to ensure the accurate realization of various functions of the automobile. As an important part of the automotive electronic control system, automobile actuators play a crucial role. They not only convert control signals into actual mechanical or electrical actions, but also play an irreplaceable role in promoting the intelligent development of automobiles.
[0004] In the prior art, generally a push rod is arranged in a covered upper cover and a lower cover, and a driving unit is used to drive the push rod to extend or retract between the upper cover and the lower cover for mechanical actions. Generally, a waterproof groove is arranged at the extending end of the push rod, and an O-ring is arranged in the waterproof groove. However, the existing waterproof groove is generally formed by respectively arranging semi-circular grooves on the upper cover and the lower cover and piecing them together, resulting in gaps at the joint position and reducing the waterproof performance. Summary of the Utility Model
[0005] To solve the technical problems in the background art, the utility model provides a sealing and mounting structure of an actuator.
[0006] The technical solution adopted by the utility model to solve its technical problems is as follows:
[0007] A sealing and mounting structure of an actuator includes a lower cover, an upper cover covering the lower cover, and a push rod slidably arranged in the lower cover;
[0008] The lower cover has a retaining edge, an extending hole for the push rod to extend through is formed on the retaining edge, and the lower cover forms a first placing groove. A sealing ring is arranged in the first placing groove, the sealing ring is arranged around the outer periphery of the extending hole, and one end of the sealing ring abuts against the retaining edge, and the other end abuts against the first placing groove and the upper cover.
[0009] Preferably, an extrusion block is formed on the upper cover, and the extrusion block extrudes the sealing ring along the extending direction of the push rod. Through the above improvement, the O-ring fits the entire surface of the flange of the lower cover. As the extrusion block extrudes the sealing ring along the extending direction of the push rod, it is easier to ensure an interference fit, causing the sealing ring to deform into the through hole. The sealing ring will abut against the outer periphery of the push rod during the sliding process of the push rod, thereby ensuring waterproofness.
[0010] Preferably, a limiting block is formed on the upper cover, and the limiting block is placed inside the lower cover. When the push rod is in the initial state, the limiting block abuts against the tail of the push rod. Through the above improvement, when the upper cover is closed on the lower cover, the limiting block on the upper cover will be placed inside the lower cover, and when the push rod is retracted into the lower cover, the limiting block will abut against the push rod, preventing the push rod from moving further and ensuring the retraction distance of the push rod.
[0011] Preferably, a second placement groove for the limiting block to be placed is formed inside the lower cover. The push rod has a first state of being retracted inside the lower cover and a second state of partially protruding from the lower cover. When the push rod is in the second state, the second placement groove is exposed. Through the above improvement, during the installation process, the push rod is placed inside the lower cover and moved forward, causing the push rod to change from the first state to the second state, exposing the second placement groove, so that the limiting block on the upper cover can be placed inside the second placement groove.
[0012] Preferably, the lower half of the sealing ring is placed inside the first placement groove, and the sealing ring has an interference fit with the first placement groove. Through the above improvement, the lower half of the sealing ring is placed inside the first placement groove, and the sealing ring has an interference fit with the first placement groove, thereby ensuring the stability of the installation of the sealing ring.
[0013] Preferably, the flange and the first placement groove and the upper cover respectively squeeze the sealing ring from both ends, so that the radial part of the sealing ring is placed inside the through hole. Through the above improvement, when the upper cover is closed on the lower cover, the first placement groove and the upper cover squeeze the sealing ring along the extending direction of the push rod, causing both sides of the sealing ring to be squeezed by the flange and the first placement groove and the upper cover respectively, deforming the sealing ring and partially placing it inside the through hole. When the push rod slides, the sealing ring abuts against the outer periphery of the push rod, thereby ensuring the sealing performance.
[0014] Preferably, an extrusion groove for the upper half of the sealing ring to be placed is formed on the extrusion block, and the contour of the extrusion groove fits the upper half of the sealing ring. Through the above improvement, the extrusion groove cooperates with the flange to ensure the limitation of the sealing ring in the X, Y, and Z axis directions.
[0015] Preferably, the flange is higher than the sealing ring. Through the above improvement, it is ensured that the sealing ring abuts against the entire surface of the flange, ensuring the sealing performance.
[0016] Preferably, a limiting groove for inserting the extrusion block is formed on the lower cover. Through the above improvement, after the upper cover is closed on the lower cover, the extrusion block will be inserted into the limiting groove, thereby further improving the reliability of the extrusion block in fixing the sealing ring.
[0017] Preferably, a plurality of positioning posts are formed on the upper cover, and positioning grooves for inserting the positioning posts are formed on the lower cover. Through the above improvement, it is more convenient to assemble and connect the upper cover and the lower cover, and the convenience of assembly is improved.
[0018] Compared with the prior art, the utility model has the following advantages and beneficial effects:
[0019] By arranging a first placement groove in the lower cover and placing the sealing ring in the first placement groove, the sealing ring is arranged around the outer circumference of the protruding hole. After the upper cover is closed, one end of the sealing ring abuts against the upper cover and the first placement groove, and the other end abuts against the retaining edge. It is easier to ensure the interference fit of the sealing ring. And since the retaining edge is of an integral structure, compared with arranging two semi-circular parts on the upper cover and the lower cover to form a waterproof groove, there is no water inlet gap, and it has higher waterproof performance. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 is a schematic structural diagram of the whole of the utility model;
[0021] Figure 2 is a schematic structural diagram of the upper cover of the utility model;
[0022] Figure 3 is a schematic structural diagram of the cooperation between the lower cover and the push rod of the utility model;
[0023] Figure 4 is a schematic structural diagram of the lower cover of the utility model;
[0024] Figure 5 is a schematic structural diagram of the push rod of the utility model;
[0025] Figure 6 is a cross-sectional view of the overall structure of the utility model;
[0026] In the figure: 1, lower cover; 2, upper cover; 3, push rod; 101, retaining edge; 102, protruding hole; 103, first placement groove; 104, sealing ring; 105, extrusion block; 106, limiting block; 107, extrusion groove; 108, guiding inclined surface; 109, limiting groove; 110, positioning post; 111, positioning groove; 112, second placement groove; DETAILED DESCRIPTION OF THE EMBODIMENTS
[0027] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.
[0028] It should be understood that although terms such as upper, middle, lower, top, one end, etc. appear in this article to describe various elements, these elements are not limited by these terms. These terms are only used to distinguish elements from each other for easy understanding, rather than to define any directional or sequential limitations.
[0029] As Figures 1-6 shown, a sealing installation structure of an actuator includes a lower cover 1, an upper cover 2 covering the lower cover 1, and a push rod 3 slidably disposed in the lower cover 1.
[0030] Specifically, the lower cover 1 has a flange 101, an extension hole 102 for the push rod 3 to extend is formed on the flange 101, and the lower cover 1 forms a first insertion groove 103. A sealing ring 104 is disposed in the first insertion groove 103. The sealing ring 104 is arranged around the outer periphery of the extension hole 102, and one end of the sealing ring 104 abuts against the flange 101, and the other end abuts against the first insertion groove 103 and the upper cover 2.
[0031] During the installation process of the entire sealing ring 104, first place the sealing ring 104 into the first insertion groove 103 so that the sealing ring 104 is arranged around the outer periphery of the extension hole 102. Then place the push rod 3 into the lower cover 1. The push rod 3 passes through the extension hole 102 and partially extends. Then cover the upper cover 2 on the lower cover 1. After the upper cover 2 is covered on the lower cover 1, one end of the sealing ring 104 abuts against the upper cover 2 and the first insertion groove 103, and the other end abuts against the flange 101, limiting the sealing ring 104 in the X, Y, and Z axis directions, ensuring the stability of the installation of the sealing ring 104, making it easier to ensure the interference fit of the sealing ring 104. And because the flange 101 is an integral structure, compared with setting two semi-circular pieces on the upper cover 2 and the lower cover 1 to form a waterproof groove, there is no gap, and it has higher waterproof performance.
[0032] As Figure 6 shown, for a further explanation of the extrusion fit of the upper cover 2 to the sealing ring 104 in this embodiment, wherein, an extrusion block 105 is formed on the upper cover 2, and the extrusion block 105 extrudes the sealing ring 104 along the extending direction of the push rod 3.
[0033] After the upper cover 2 is closed on the lower cover 1, the O-ring fits snugly against the entire surface of the retaining edge 101 of the lower cover 1. As the pressing block 105 presses the sealing ring 104 along the extending direction of the push rod 3, it is easier to ensure an interference fit and cause the sealing ring 104 to deform into the extending hole 102. The sealing ring 104 will abut against the outer periphery of the push rod 3 during the sliding process of the push rod 3, thereby ensuring the waterproofness of the push rod 3 during operation.
[0034] Specifically, a pressing groove 107 for placing the upper half of the sealing ring 104 is formed on the pressing block 105, and the contour of the pressing groove 107 fits the upper half of the sealing ring 104. The pressing groove 107 cooperates with the retaining edge 101 to ensure the limitation of the upper half of the sealing ring 104 in the X, Y, and Z axis directions.
[0035] Preferably, a limiting groove 109 for placing the pressing block 105 is formed on the lower cover 1. After the upper cover 2 is closed on the lower cover 1, the pressing block 105 will be placed in the limiting groove 109, thereby further improving the reliability of the pressing block 105 in fixing the sealing ring 104.
[0036] As Figures 2 to 6 shown, for a further explanation of the cooperation between the sealing ring 104 and the lower cover 1 in this embodiment, the lower half of the sealing ring 104 is placed in the first placement groove 103, and the sealing ring 104 has an interference fit with the first placement groove 103, thereby ensuring the stability of the installation of the sealing ring 104.
[0037] In addition, the retaining edge 101 and the first placement groove 103 and the upper cover 2 press the sealing ring 104 from both ends respectively, so that the radial part of the sealing ring 104 is placed in the extending hole 102, ensuring the limitation of the lower half of the sealing ring 104 in the X, Y, and Z axis directions.
[0038] When the upper cover 2 is closed on the lower cover 1, the first placement groove 103 and the upper cover 2 press the sealing ring 104 along the extending direction of the push rod 3, so that both sides of the sealing ring 104 are respectively pressed by the retaining edge 101 and the first placement groove 103 and the upper cover 2, causing the sealing ring 104 to deform and partially enter the extending hole 102. During the sliding process of the push rod 3, the sealing ring 104 abuts against the outer periphery of the push rod 3, thereby ensuring the sealing performance.
[0039] Preferably, the first placement groove 103 and the retaining edge 101 are integrally formed, improving the overall structure of the lower cover 1 and ensuring the reliability of fixing the sealing ring 104.
[0040] Preferably, the retaining edge 101 is higher than the sealing ring 104, ensuring that the entire sealing ring 104 abuts against the retaining edge 101 and ensuring the sealing performance.
[0041] As Figure 2 、 Figure 3 、 Figure 6As shown in the figure, for a further explanation of the installation of the push rod 3 in this embodiment, a limit block 106 is formed on the upper cover 2. When the upper cover 2 and the lower cover 1 are covered, the limit block 106 is placed inside the lower cover 1. When the push rod 3 is in the initial state, the limit block 106 abuts against the push rod 3 to prevent the push rod 3 from further moving, ensuring the retracted distance of the push rod 3.
[0042] Specifically, a second insertion groove 112 for the limit block 106 to be inserted is formed inside the lower cover 1. The push rod 3 has a first state of being retracted inside the lower cover and a second state of partially protruding from the lower cover 1. When the push rod 3 is in the second state, the second insertion groove 112 is exposed.
[0043] During the installation process, first place the push rod 3 into the lower cover 1 and let the push rod 3 move forward, so that the push rod 3 changes from the first state to the second state, exposing the second insertion groove 112, so that the limit block 106 on the upper cover 2 can be inserted into the second insertion groove 112.
[0044] Furthermore, a guiding inclined surface 108 is formed at the end of the push rod 3. During the installation process of the push rod 3, the guiding inclined surface 108 makes it easier for the push rod 3 to protrude from the protruding hole 102.
[0045] During the entire installation process of the push rod 3, first slide the push rod 3 forward by a certain distance to ensure that the front end of the push rod 3 protrudes from the protruding hole 102 of the lower cover 1, and then assemble the upper cover 2 onto the lower cover 1. At this time, the limit block 106 of the upper cover 2 abuts against the tail end of the push rod 3 to ensure that the push rod 3 cannot slip out from the front protruding hole 102. At the same time, the pressing block 105 of the upper cover 2 abuts against the rear end of the sealing ring 104 to ensure the X, Y, and Z direction limits of the sealing performance.
[0046] Preferably, a plurality of positioning posts 110 are formed on the upper cover 2, and a positioning groove 111 for the positioning posts 110 to be inserted is formed on the lower cover 1, which makes it more convenient for the assembly connection of the upper cover 2 and the lower cover 1 and improves the convenience of assembly.
[0047] This specific embodiment is only an explanation of the present invention, and it is not a limitation of the present invention. Those skilled in the art can make modifications to this embodiment without creative contributions according to needs after reading this specification, but as long as it is within the scope of the claims of the present invention, it is protected by the patent law.
Claims
1. A sealing installation structure of an actuator, characterized in that: It comprises a lower cover (1), an upper cover (2) arranged on the lower cover (1), and a push rod (3) slidably arranged in the lower cover (1); The lower cover (1) has a retaining edge (101), and a projection hole (102) is formed on the retaining edge (101) for the push rod (3) to extend out. The lower cover (1) has a first insertion groove (103), and a sealing ring (104) is arranged in the first insertion groove (103). The sealing ring (104) is arranged around the outer periphery of the projection hole (102), and one end of the sealing ring (104) abuts against the retaining edge (101), and the other end abuts against the first insertion groove (103) and the upper cover (2).
2. The sealing installation structure of an actuator according to claim 1, characterized in that: An extrusion block (105) is formed on the upper cover (2), and the extrusion block (105) extrudes the sealing ring (104) along the extension direction of the push rod (3).
3. The sealing installation structure of an actuator according to claim 1, characterized in that: A limit block (106) is formed on the upper cover (2), and the limit block (106) is inserted into the lower cover (1). When the push rod (3) is in an initial state, the limit block (106) abuts against the rear end of the push rod (3).
4. The sealing installation structure of an actuator according to claim 3, characterized in that: A second insertion groove (112) for inserting a limit block (106) is formed in the lower cover (1), and the push rod (3) has a first state in which it is inserted into the lower cover, and a second state in which it partially extends out of the lower cover (1), and the push rod (3) is exposed in the second state when it is in the second state.
5. The sealing installation structure of an actuator according to claim 1, characterized in that: The lower half of the sealing ring (104) is inserted into the first insertion groove (103), and the sealing ring (104) and the first insertion groove (103) are interference fit.
6. The sealing installation structure of an actuator according to claim 1, characterized in that: The retaining edge (101), the first insertion groove (103) and the upper cover (2) respectively squeeze the sealing ring (104) from both ends, so that the radial part of the sealing ring (104) is inserted into the extension hole (102).
7. The sealing installation structure of an actuator according to claim 2, characterized in that: An extrusion groove (107) is formed on the extrusion block (105) for the upper half of the sealing ring (104) to be placed therein, and the contour of the extrusion groove (107) fits the upper half of the sealing ring (104).
8. The sealing installation structure of an actuator according to claim 1, characterized in that: The retaining edge (101) is higher than the sealing ring (104).
9. The sealing installation structure of an actuator according to claim 2, characterized in that: The lower cover (1) is formed with a limiting groove (109) for the extrusion block (105) to be placed therein.
10. The sealing installation structure of an actuator according to claim 1, characterized in that: A plurality of positioning posts (110) are formed on the upper cover (2), and a positioning groove (111) for the positioning posts (110) to be inserted is formed on the lower cover (1).