Sealing protection device for locking actuator

Abstract

A sealing protection device for a locking actuator comprises a sealing sleeve, the sealing sleeve is vertically through, the lower end of the sealing sleeve is fixed to the outer wall of a locking cavity of the actuator, the upper end of the sealing sleeve is fixed to the outer wall of a locking rod, the sealing sleeve is a telescopic sealing sleeve, a plurality of fold layers protruding outwards are arranged on the outer wall of the sealing sleeve, and the fold layers can be folded and unfolded mutually. According to the sealing protection device for the locking actuator, the lower end of the sealing sleeve is fixed on the outer wall of the locking cavity of the actuator, and the upper end of the sealing sleeve is fixed on the outer wall of the locking rod, so that liquid or rainwater is prevented from entering the joint of the locking rod and the locking cavity; the outer wall is provided with a plurality of fold layers protruding outwards, and the fold layers can be folded and unfolded mutually and are matched with the telescopic state of the lock rod; through holes are formed in the bottom of the wrinkle layer of the bottom layer, the air pressure inside and outside the sealing sleeve can be balanced through the through holes, when the wrinkle layer is increased, the pressing force does not need to be increased when the sealing sleeve is pressed, and small water drops or steam can be evaporated from the through holes.

Description

Technical Field

[0001] This utility model relates to a sealing and protection device for a locking actuator. Background Technology

[0002] Car fuel tank caps or charging port caps are equipped with locking actuators. Locking actuators generally have a locking chamber and a locking rod. The locking rod can extend and retract relative to the locking chamber. When the locking rod enters the locking chamber, the fuel tank cap or charging port cap is locked. When the locking rod extends out of the locking chamber, the fuel tank cap or charging port cap is closed. Therefore, there is a gap between the locking rod and the locking chamber. Other components are installed inside the locking chamber. In order to prevent other components from being affected by moisture or other liquids, a sealing ring is installed between the locking chamber and the locking rod. However, the installation of the sealing ring often affects the relative movement between the locking rod and the locking chamber. Utility Model Content

[0003] This utility model provides a sealing and protective device for a locking actuator.

[0004] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows:

[0005] A sealing and protective device for a locking actuator includes a sealing sleeve that extends vertically. The lower end of the sealing sleeve is fixed to the outer wall of the locking cavity of the actuator, and the upper end is fixed to the outer wall of the locking rod. The sealing sleeve is a retractable sealing sleeve and has multiple outwardly protruding pleated layers on its outer wall. The pleated layers can be folded and unfolded together, and a through hole is provided at the bottom of one of the pleated layers.

[0006] Preferably, the bottom of the sealing sleeve is provided with an annular protrusion, and the edge of the annular protrusion is provided with a groove facing inward.

[0007] Preferably, the through hole is located at the bottom of the bottommost folded layer.

[0008] Compared with the prior art, the sealing and protective device for the locking actuator of this utility model prevents liquid or rainwater from entering the connection between the locking rod and the locking cavity by fixing the lower end of the sealing sleeve to the outer wall of the locking cavity of the actuator and the upper end to the outer wall of the locking rod. The outer wall is provided with multiple outwardly protruding pleated layers, which can be folded and unfolded to match the extension and retraction of the locking rod. The bottom of the bottom pleated layer is provided with a through hole, which can balance the air pressure inside and outside the sealing sleeve. When the pleated layer increases, no additional pressing force is required when pressing the sealing sleeve, and small water droplets or steam can evaporate from the through hole. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the assembly of the sealing and protection device for the locking actuator of this utility model.

[0010] Figure 2 This is a three-dimensional schematic diagram of the sealing and protection device for the locking actuator of this utility model.

[0011] Figure 3 This is an assembly and disassembly diagram of the sealing and protection device for the locking actuator of this utility model. Detailed Implementation

[0012] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0013] like Figures 1 to 3 As shown, a locking actuator sealing and protection device includes a sealing sleeve 1, which extends vertically. The lower end of the sealing sleeve 1 is fixed to the outer wall of the locking cavity 101 of the actuator 100, and the upper end is fixed to the outer wall of the locking rod 102, so as to prevent liquid or rainwater from entering the connection between the locking rod 102 and the locking cavity 101.

[0014] The sealing sleeve 1 is a retractable sealing sleeve, and its outer wall is provided with multiple layers of outwardly protruding pleated layers 11. The pleated layers 11 can be folded and unfolded to cooperate with the extension and retraction of the locking rod 102. When the locking rod 102 enters the locking cavity 101, the pleated layers 11 of the sealing sleeve 1 overlap each other. When the locking rod 102 extends out of the locking cavity 101, the pleated layers 11 of the sealing sleeve 1 are unfolded. The bottom of the bottom pleated layer 11 is provided with a through hole 111. The through hole 111 can balance the air pressure inside and outside the sealing sleeve 1. When the pleated layer 11 increases, no additional pressing force is required when pressing the sealing sleeve 1. At the same time, when there are small water droplets or steam, they can evaporate from the through hole 111, effectively protecting the locking actuator from interference by water vapor.

[0015] The bottom of the sealing sleeve 1 is provided with an annular protrusion 12, and the edge of the annular protrusion 12 is provided with a groove 121. The groove 121 serves a positioning function to prevent the sealing sleeve 1 from being installed backwards during assembly.

[0016] This utility model's locking actuator sealing and protection device prevents liquid or rainwater from entering the connection between the locking rod 102 and the locking cavity 101 by fixing the lower end of the sealing sleeve 1 to the outer wall of the locking cavity 101 of the actuator 100 and the upper end to the outer wall of the locking rod 102. The outer wall is provided with multiple layers of outwardly protruding pleated layers 11, which can be folded and unfolded to cooperate with the extension and retraction of the locking rod 102. The bottom of the bottom pleated layer 11 is provided with a through hole 111. The through hole 111 can balance the air pressure inside and outside the sealing sleeve 1. When the pleated layer 11 increases, no additional pressing force is required when pressing the sealing sleeve 1, and small water droplets or steam can evaporate from the through hole 111.

[0017] Finally, it should be noted that the above embodiments only illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A sealing and protective device for a locking actuator, comprising a sealing sleeve (1) extending vertically through the actuator, the lower end of the sealing sleeve (1) being fixed to the outer wall of the locking cavity (101) of the actuator (100), and the upper end being fixed to the outer wall of the locking rod (102), characterized in that, The sealing sleeve (1) is a retractable sealing sleeve and has multiple layers of outwardly protruding pleated layers (11) on its outer wall. The pleated layers (11) can be folded and unfolded together, and a through hole (111) is provided at the bottom of one of the pleated layers (11).

2. The locking actuator sealing and protection device according to claim 1, characterized in that, The bottom of the sealing sleeve (1) is provided with an annular protrusion (12), and the edge of the annular protrusion (12) is provided with a groove (121) facing inward.

3. The locking actuator sealing and protection device according to claim 1, characterized in that, The through hole (111) is located at the bottom of the bottommost pleated layer (11).

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