Automatic lubricating device for electric door sliding rail

The automatic lubrication device for electric door slide rails, which uses mechanical linkage, utilizes the kinetic energy of the slider to quantitatively squeeze out lubricating oil, solving the problems of untimely lubrication and complex devices in existing electric door slide rails. It achieves efficient, energy-saving, and low-cost lubrication, and is adaptable to complex environments.

CN224301797UActive Publication Date: 2026-05-29WUXI JIANGUO INTELLIGENT TECH CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
WUXI JIANGUO INTELLIGENT TECH CO LTD
Filing Date
2025-08-25
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

Existing lubrication methods for electric door slide rails rely on regular maintenance, which can easily lead to untimely lubrication due to negligence or delay, resulting in dry friction between the slide rail and the moving block, abnormal noise, or jamming. Manual lubrication makes it difficult to ensure uniform oil volume, and excessive lubricating oil pollutes the environment. Some automatic lubrication devices have complex structures, high costs, are prone to failure, and are not suitable for complex environments.

Method used

Design an automatic lubrication device with a purely mechanical structure. Utilize the kinetic energy of the slider's movement to drive the piston and rubber cup, quantitatively squeezing out lubricating oil to ensure continuous lubrication between the slide rail and the moving block, avoiding excessive or insufficient lubrication. It is adaptable to dusty and humid environments, has a simple and low-cost structure, and requires no additional power to move synchronously with the door.

Benefits of technology

It achieves continuous and good lubrication between the slide rail and the moving block, reduces friction and wear, extends service life, reduces labor costs, saves energy and is environmentally friendly, provides precise and efficient lubrication, adapts to complex environments, and reduces the failure rate.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses an automatic lubricating device of electric door slide rail, and relates to the technical field of electric door slide rail; the utility model discloses a slide rail, two symmetrical chutes are seted up on the slide rail, the third connecting hole is seted up in the arbitrary one chute, the first installation slot is seted up on the slide rail, the one end of first installation slot inboard wall is close to the third connecting hole and is seted up with the connecting groove, the fixed block is installed in the third connecting hole, the utility model discloses the automatic lubrication through mechanical linkage, and the advantage is remarkable, utilizes the kinetic energy of slider to move to the top, through the force link and drives the piston, rubber bowl pressurization, makes the lubricating oil quantitative extrusion through the connecting hole, does not need manual intervention, can complete lubrication every time and moves, guarantees that the slide rail and the moving block keep good lubrication state continuously, reduces the friction wear, prolongs the life.
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Description

Technical Field

[0001] This utility model relates to the field of electric door sliding rail technology, and in particular to an automatic lubrication device for electric door sliding rails. Background Technology

[0002] Electric gates are widely used in shopping malls, office buildings, factories, and other places. The smooth sliding of the track and moving blocks is crucial to ensuring the smooth operation of the gate. Currently, track lubrication relies heavily on manual, periodic application of lubricating oil. Maintenance personnel need to use an oil can or oil gun to apply oil to the track contact surfaces. Due to the high frequency of use of electric gates, the tracks are prone to wear and jamming due to insufficient lubrication. Especially in dusty environments, increased friction can shorten the lifespan of components. Furthermore, manual lubrication makes it difficult to precisely control the amount of oil. Excessive oil can attract dust and form sludge, while insufficient oil will not provide effective lubrication. Regular maintenance also incurs labor costs, and operation is inconvenient for electric gates installed in high or remote locations.

[0003] Existing lubrication methods rely on regular maintenance, which can easily lead to untimely lubrication due to negligence or delay, causing dry friction between the slide rail and the moving block, resulting in abnormal noise or even jamming. Manual lubrication makes it difficult to ensure uniform oil distribution; excessive lubricating oil will overflow and pollute the environment, while insufficient oil will not cover all friction surfaces. Some automatic lubrication devices require motors or electronic control components, which are complex in structure and expensive. They are prone to failure due to electronic component malfunctions in outdoor or humid environments, while also consuming additional electrical energy, which contradicts the need for energy conservation. Furthermore, maintenance requires professional personnel, increasing the cost of use in the long run.

[0004] Therefore, a new automatic lubrication device for electric door slide rails is proposed to solve the above problems. Utility Model Content

[0005] 1. Technical problems to be solved

[0006] The purpose of this utility model is to provide an automatic lubrication device for electric door sliding rails. By setting up a detection component, it solves the problems in actual use, where existing lubrication methods rely on regular maintenance, which is prone to untimely lubrication due to negligence or delay, causing dry friction between the sliding rail and the moving block, resulting in abnormal noise or even jamming; manual oiling is difficult to ensure uniform oil volume, and excessive lubricating oil will overflow and pollute the environment, while insufficient oil will not cover all friction surfaces; some automatic lubrication devices need to be equipped with motors or electronic control components, which are complex in structure and expensive, and are prone to failure due to electronic component failure in outdoor or humid environments, while also consuming additional electrical energy, which contradicts the energy-saving requirements, and requires professional personnel for maintenance, increasing the later use cost.

[0007] 2. Technical Solution

[0008] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0009] This utility model relates to an automatic lubrication device for electric door sliding rails, comprising a sliding rail with two symmetrical sliding grooves, each of which has a third connecting hole. A first mounting groove is provided on the sliding rail, and a connecting groove is provided on the inner sidewall of the first mounting groove near the third connecting hole. A fixing block is installed in the third connecting hole, and a force-applying rod is installed on the fixing block. A piston is installed on the end of the force-applying rod near the third connecting hole, and a rubber cup is installed on the piston. The outer diameter of the rubber cup is smaller than the inner diameter of the third connecting hole.

[0010] Furthermore, multiple air grooves are formed on the inner sidewall of the connecting groove, and a blocking block is installed in the connecting groove. The blocking block is adapted to the inner sidewall of the connecting groove. This design allows the blocking block to seal the connecting groove after moving outward, preventing the gas in the first mounting groove from escaping.

[0011] Furthermore, the slide rail has two first connecting holes and a second connecting hole. Each of the first connecting holes is connected to the second connecting hole. A fourth connecting hole is provided in the first mounting groove near the first connecting hole. The fourth connecting hole is connected to the first and second connecting holes. This design allows the lubricating oil in the first mounting groove to enter the first and second connecting holes through the fourth connecting hole, thereby making the lubricating oil appear at the upper and both ends of the slide rail.

[0012] Furthermore, two sliding grooves are provided at both ends of the inner sidewall of the first mounting groove. A sealing plate is installed in the first mounting groove, and two sets of symmetrical sliders are installed on the sealing plate. Each slider is engaged with the corresponding sliding groove.

[0013] Furthermore, a cover plate is installed on the first mounting slot, and a second mounting slot is opened on the first mounting slot. A threaded hole is opened at the bottom end of the inner side wall of the second mounting slot. A mounting plate is installed on the cover plate, and a bolt is installed on the mounting plate. The bolt passes through the mounting plate and is installed in the threaded hole. This design can fix the cover plate on the second mounting slot, thereby making the second mounting slot form a sealed space.

[0014] Furthermore, two connecting pipes are installed through the cover plate. A second valve is installed at the top of the connecting pipe closer to the mounting plate, and a first valve is installed at the top of the connecting pipe farther from the mounting plate. This design allows for the rapid addition of lubricating oil and adjustment of air pressure in the second mounting groove.

[0015] Furthermore, a movable block is installed on the slide rail.

[0016] 3. Beneficial effects

[0017] Compared with existing technologies, the advantages of this utility model are:

[0018] This invention achieves automatic lubrication through mechanical linkage, offering significant advantages. Utilizing the kinetic energy of the slider moving to the top, a force rod drives a piston and rubber cup to apply pressure, causing lubricating oil to be metered out through the connecting hole. No manual intervention is required; lubrication is completed with each movement, ensuring the slide rail and moving block maintain good lubrication, reducing friction and wear, and extending service life. The purely mechanical structure requires no electronic components, resulting in low cost and adaptability to complex environments such as dust and humidity, with a low failure rate. The metered lubricating oil extrusion avoids excessive waste or insufficient lubrication, and acts directly on the friction surface, ensuring precise and efficient lubrication. The device moves synchronously with the door, requiring no additional power, making it energy-saving and environmentally friendly. Maintenance only requires replenishing lubricating oil, simplifying operation and significantly reducing labor costs.

[0019] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a structural diagram showing the installation configuration of this utility model;

[0022] Figure 2 This is a cross-sectional front view of the slide rail of this utility model;

[0023] Figure 3 This is a cross-sectional side view of the slide rail of this utility model;

[0024] Figure 4 This is a structural diagram of the sealing block of this utility model;

[0025] Figure 5 A is shown in the enlarged view of this utility model;

[0026] Figure 6 This is a structural diagram of the sealing plate of this utility model;

[0027] Figure 7 This is a structural diagram of the piston and rubber cup of this utility model;

[0028] Figure 8 This is a structural diagram of the cover plate of this utility model.

[0029] The attached diagram lists the components represented by each number as follows:

[0030] 110. Slide rail; 111. Slide groove; 112. First connecting hole; 113. Second connecting hole; 114. Third connecting hole; 115. First mounting groove; 116. Fourth connecting hole; 117. Connecting groove; 118. Blocking block; 119. Air groove; 120. Second mounting groove; 121. Threaded hole; 122. Cover plate; 123. Connecting pipe; 125. First valve; 126. Second valve; 127. Mounting plate; 128. Bolt; 130. Sliding groove; 131. Sealing plate; 132. Slider; 140. Moving block; 210. Fixed block; 220. Force rod; 230. Piston; 240. Rubber cup. Detailed Implementation

[0031] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0032] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0033] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0034] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0035] Please see Figure 1-8As shown, this embodiment is an automatic lubrication device for an electric door slide rail 110, including a slide rail 110. The slide rail 110 has two symmetrical grooves 111, and each groove 111 contains a third connecting hole 114. The slide rail 110 also has a first mounting groove 115. A connecting groove 117 is formed on the inner sidewall of the first mounting groove 115 near the end of the third connecting hole 114. A fixing block 210 is installed in the third connecting hole 114, and a force-applying device is mounted on the fixing block 210. A rod 220 is used for applying force. A piston 230 is installed at one end of the rod 220 near the third connecting hole 114. A rubber cup 240 is installed on the piston 230, and the outer diameter of the rubber cup 240 is smaller than the inner diameter of the third connecting hole. Multiple air grooves 119 are formed on the inner wall of the connecting groove 117. A blocking block 118 is installed in the connecting groove 117, and the blocking block 118 is adapted to fit the inner wall of the connecting groove 117. Two first connecting holes 112 are formed on the slide rail 110, and a second connecting hole is formed on the slide rail 110. Hole 113, any one of the first connecting holes 112 is connected to the second connecting hole 113. A fourth connecting hole 116 is provided in the first mounting groove 115 near one end of the first connecting hole 112, and the fourth connecting hole 116 is connected to the first connecting hole 112 and the second connecting hole 113. Two sliding grooves 130 are provided at both ends of the inner sidewall of the first mounting groove 115. A sealing plate 131 is installed in the first mounting groove 115, and two sets of symmetrical sliders 13 are installed on the sealing plate 131. 2. Each of the sliders 132 is fitted into the corresponding sliding groove 130; a cover plate 122 is installed on the first mounting groove 115, a second mounting groove 120 is opened on the first mounting groove 115, a threaded hole 121 is opened at the bottom end of the inner side wall of the second mounting groove 120, a mounting plate 127 is installed on the cover plate 122, a bolt 128 is installed on the mounting plate 127, and the bolt 128 passes through the mounting plate 127 and is installed in the threaded hole 121; a moving block 140 is installed on the slide rail 110.

[0036] Working principle: When the moving block 140 moves to one side, it pushes the force rod 220, causing the force rod 220 to move inward on the fixed block 210. During this movement, the force rod 220 drives the piston 230 to move. As the piston 230 moves, the internal air pressure increases, causing the rubber cup 240 to expand and block the inner wall of the third connecting hole 114, further compressing the gas. This compression pushes the sealing block inward, and as the sealing block moves forward, it appears at the connection... The groove 117 is close to one end of the first mounting groove 115. At this time, gas will enter from the air groove 119 to the end of the cover plate 122 and the first mounting groove 115 away from the fourth connecting hole 116. When pressurized, the cover plate 122 will move towards the fourth connecting hole 116, thereby allowing the lubricating oil inside to enter the first connecting hole 112 and the second connecting hole 113 through the fourth connecting hole 116, and further squeeze it onto the surface of the slide rail 110, so as to lubricate the slide rail 110 and the moving block 140.

[0037] Two connecting pipes 123 are installed through the cover plate 122. A second valve 126 is installed at the top of the connecting pipe 123 near the mounting plate 127, and a first valve 125 is installed at the top of the connecting pipe 123 away from the mounting plate 127. This design allows the addition of lubricating oil to the first mounting groove 115 through the first valve 125, and also allows the release of gas inside to restore the original air pressure. The lubricating oil is grease.

[0038] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0039] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An automatic lubrication device for an electric door slide rail (110), characterized in that, include: The slide rail (110) has two symmetrical grooves (111), and a third connecting hole (114) is provided in each of the grooves (111). The slide rail (110) has a first mounting groove (115), and a connecting groove (117) is provided at one end of the inner sidewall of the first mounting groove (115) near the third connecting hole (114). A fixing block (210) is installed in the third connecting hole (114), and a force rod (220) is installed on the fixing block (210). A piston (230) is installed at one end of the force rod (220) near the third connecting hole (114), and a rubber cup (240) is installed on the piston (230). The outer diameter of the rubber cup (240) is smaller than the inner diameter of the third connecting hole.

2. The automatic lubrication device for an electric door slide rail (110) according to claim 1, characterized in that, Multiple air grooves (119) are provided on the inner side wall of the connecting groove (117), and a blocking block (118) is installed in the connecting groove (117). The blocking block (118) is adapted to the inner side wall of the connecting groove (117).

3. The automatic lubrication device for an electric door slide rail (110) according to claim 1, characterized in that, The slide rail (110) has two first connecting holes (112) and a second connecting hole (113). Each of the first connecting holes (112) is connected to the second connecting hole (113). A fourth connecting hole (116) is provided in the first mounting groove (115) near the first connecting hole (112). The fourth connecting hole (116) is connected to the first connecting hole (112) and the second connecting hole (113).

4. The automatic lubrication device for an electric door slide rail (110) according to claim 1, characterized in that, Two sliding grooves (130) are provided on both the left and right ends of the inner sidewall of the first mounting groove (115). A sealing plate (131) is installed in the first mounting groove (115). Two sets of symmetrical sliders (132) are installed on the sealing plate (131). Any one of the sliders (132) is engaged with the corresponding sliding groove (130).

5. The automatic lubrication device for an electric door slide rail (110) according to claim 1, characterized in that, A cover plate (122) is installed on the first mounting groove (115). A second mounting groove (120) is opened on the first mounting groove (115). A threaded hole (121) is opened at the bottom of the inner side wall of the second mounting groove (120). A mounting plate (127) is installed on the cover plate (122). A bolt (128) is installed on the mounting plate (127). The bolt (128) passes through the mounting plate (127) and is installed in the threaded hole (121).

6. The automatic lubrication device for an electric door slide rail (110) according to claim 5, characterized in that, Two connecting pipes (123) are installed through the cover plate (122). A second valve (126) is installed at the top of the connecting pipe (123) closer to the mounting plate (127), and a first valve (125) is installed at the top of the connecting pipe (123) farther away from the mounting plate (127).

7. The automatic lubrication device for an electric door slide rail (110) according to claim 1, characterized in that, A movable block (140) is mounted on the slide rail (110).