Main shaft driving connection structure of electric balance door and balance door

By separating the motor and slide rails and using a unique elastic square shaft sleeve, the design challenge of narrow door panels for balanced doors has been solved, resulting in a beautiful, safe, and highly stable electric balanced door structure.

CN224149370UActive Publication Date: 2026-04-21BINZHOU MINGJIANG BUILDING ENERGY SAVING SYST TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
BINZHOU MINGJIANG BUILDING ENERGY SAVING SYST TECH CO LTD
Filing Date
2025-04-29
Publication Date
2026-04-21

AI Technical Summary

Technical Problem

Existing technologies often result in wider door panels due to the design of the motor and slide rail, making it difficult to meet the market demand for narrow, balanced doors. Furthermore, having the motor and slide rail on the same side is aesthetically unappealing and reduces safety.

Method used

The motor and slide rail are designed to be separate. The motor is installed above the door frame beam, and the slide rail is below the door frame beam. It is connected to the door leaf through a slider. Combined with a unique elastic square shaft sleeve, the motor and the main shaft of the balanced door can rotate synchronously. The width of the slide rail meets the design requirements of the door leaf.

Benefits of technology

The design achieves a narrow door leaf balance door, which improves safety and stability. The motor and slide rail are separated to save space. The elastic square shaft sleeve facilitates installation and maintenance, and the connection is highly reliable.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of balance door accessories, and provides an electric balance door main shaft driving connection structure and a balance door. The upper portion of the sliding block is in sliding connection with the sliding rail, and the lower portion of the sliding block is connected to the door leaf. The motor is mounted above the door frame cross beam, and the motor is provided with a driving square shaft; one end of the elastic square shaft sleeve is provided with a spring and sleeved with the balance door main shaft to achieve synchronous rotation of the balance door main shaft and the elastic square shaft sleeve, and the other end of the elastic square shaft sleeve is sleeved with the driving square shaft to drive the balance door main shaft to rotate through the motor. According to the technical scheme, the motor and the sliding rail are vertically separated, the motor drives the balance door spindle to drive the supporting arm to pull the door leaf to rotate, the sliding rail is connected with the door leaf through the sliding block below the door frame cross beam, the door leaf only needs to meet the width of the sliding rail, and the door leaf can be designed to be narrow. The requirement of the market for the balance door with the narrow door leaf can be met.
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Description

Technical Field

[0001] This utility model relates to the technical field of balance door accessories, specifically to an electric balance door main shaft drive connection structure and a balance door. Background Technology

[0002] In related technologies, the motor is usually placed outside the door frame, which is unsightly. Moreover, the motor and the slide rail are on the same side when the drive arm pulls the door leaf to rotate. This requires the design of a wider door leaf to accommodate it, which makes it difficult to meet the market demand for narrower door leaf balance doors. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art or related technologies.

[0004] Therefore, one objective of this utility model is to provide an electric balance door main shaft drive connection structure and a balance door, wherein the motor and the slide rail are separated vertically, the motor drives the balance door main shaft to drive the support arm to pull the door leaf to rotate, the slide rail is connected to the door leaf below the door frame beam through a slider, the door leaf only needs to meet the width of the slide rail, the door leaf can be designed to be relatively narrow, which can meet the market demand for balance doors with narrower door leaves.

[0005] To achieve the above objectives, the present invention provides an electric balancing door main shaft drive connection structure, comprising: a slide rail, disposed below the door frame beam; a slider, the upper part of which is slidably connected to the slide rail, and the lower part of which is connected to the door leaf; a motor, installed above the door frame beam, the motor having a drive square shaft; and a spring-loaded square shaft sleeve, one end of which has a spring and is sleeved inside the balancing door main shaft to achieve synchronous rotation of the two, and the other end of which is sleeved on the drive square shaft to drive the balancing door main shaft to rotate via the motor.

[0006] Preferably, the elastic square bushing includes: an outer sleeve with an elongated mounting hole at its bottom; a spring placed inside the outer sleeve; and an inner sleeve placed inside the outer sleeve and above the spring. A bolt is provided at the bottom of the inner sleeve to pass through the elongated mounting hole, thereby connecting the inner and outer sleeves. The outer sleeve is welded to a corresponding position on the main shaft of the balance door to fix the elastic square bushing.

[0007] Preferably, the elastic square bushing includes: an upper outer sleeve and a lower outer sleeve that fit together, wherein the lower outer sleeve has a U-shaped mounting hole; a spring, which is placed inside the lower outer sleeve; and an inner sleeve, the lower part of which is placed inside the lower outer sleeve and above the spring, and the upper part of which is placed inside the upper outer sleeve. A key is provided at the bottom of the inner sleeve to pass through the U-shaped mounting hole, thereby connecting the inner sleeve and the lower outer sleeve. The upper outer sleeve and the lower outer sleeve are respectively fixedly installed inside the main shaft of the balance door to secure the elastic square bushing. Preferably, the inner sleeve has a square hole inside that matches the drive square shaft.

[0008] Preferably, the elastic square bushing includes: a splined outer sleeve welded inside the main shaft of the balance door; the spring placed inside the splined outer sleeve; and a splined inner shaft placed inside the splined outer sleeve and above the spring.

[0009] Preferably, the spline inner shaft has a square hole inside that matches the drive square shaft.

[0010] Preferably, the elastic square bushing is connected to the drive square shaft via a bearing seat, which is installed below the door frame beam and corresponds to the position of the balance door main shaft.

[0011] The present invention also provides a balancing gate, which adopts the electric balancing gate main shaft drive connection structure of any of the above technical solutions.

[0012] The electric balance gate main shaft drive connection structure and balance gate proposed in this utility model have the following beneficial technical effects:

[0013] (1) The present invention proposes an electric balance door main shaft drive connection structure and a design in which the motor and slide rail are separated vertically in the balance door. The motor is located above the door frame beam and inside the door frame, while the slide rail is located below the door frame beam and is connected to the door leaf through a slider. The door leaf only needs to meet the width of the slide rail, and the door leaf can be designed to be relatively narrow, which can meet the market demand for balance doors with narrower door leaves. Moreover, the motor control circuit will not come into contact with the slide rail slider, etc., resulting in higher safety performance.

[0014] (2) The electric balance door main shaft drive connection structure proposed in this utility model and the balance door main shaft driven by the motor to drive the support arm to pull the door leaf to rotate have high stability and reliability.

[0015] (3) The electric balance gate main shaft drive connection structure and the uniquely designed elastic square shaft sleeve in the balance gate proposed in this utility model realize the connection between the balance gate main shaft and the drive square shaft of the motor, which is convenient for installation. The elastic square shaft sleeve is fixedly connected to the balance gate main shaft, which is more reliable and stable. The elastic square shaft sleeve is very convenient and easy to operate during installation and maintenance. Moreover, the elastic square shaft sleeve can be tightly fitted to the drive square shaft of the motor through the action of the spring, and it is not easy to fall off and separate from the balance gate main shaft, so the connection is reliable.

[0016] (4) The electric balance door main shaft drive connection structure and the elastic square bushing in the balance door proposed in this utility model can realize the up and down adjustment of the bolt parts to a certain extent through the design of built-in spring and long strip mounting hole, which is more adaptable and easier to install.

[0017] (5) The electric balance door main shaft drive connection structure and the elastic square shaft sleeve in the balance door proposed by this utility model can realize the up and down adjustment of the shaft key to a certain extent through the built-in spring and the U-shaped mounting hole of the lower outer kit. It is more adaptable, easier to install, and has higher performance, quality and reliability.

[0018] Additional aspects and advantages of this invention will be set forth in the description which follows, and in part will be obvious from the description or may be learned by practice of the invention. Attached Figure Description

[0019] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0020] Figure 1 A schematic diagram of an electric balance gate spindle drive connection structure according to an embodiment of the present invention is shown.

[0021] Figure 2 Another structural schematic diagram of an electric balance gate main shaft drive connection structure according to an embodiment of the present invention is shown;

[0022] Figure 3 It shows Figure 2 A schematic diagram showing the disassembled structure of the main shaft drive connection structure of the electric balance gate.

[0023] Figure 4 It shows Figure 3 A schematic diagram of the disassembled structure of the elastic square bushing;

[0024] Figure 5 A schematic diagram of another disassembled structure of the elastic square shaft sleeve in an electric balance gate main shaft drive connection structure according to an embodiment of the present invention is shown.

[0025] Figure 6 This diagram shows a further disassembled structural schematic of the elastic square shaft sleeve in an electric balance gate main shaft drive connection structure according to an embodiment of the present invention.

[0026] in, Figures 1 to 6 The correspondence between the reference numerals and components in the attached drawings is as follows:

[0027] 102 Bearing housing, 104 Door frame crossbeam, 106 Balance door spindle, 108 Slide rail, 110 Slider, 112 Elastic square shaft sleeve, 1121 Outer sleeve, 1122 Long strip mounting hole, 1123 Spring, 1124 Inner sleeve, 1125 Bolt, 1126 Square hole, 1127 Upper outer sleeve, 1128 Lower outer sleeve, 1129 U-shaped mounting hole, 1130 Shaft key, 1131 Splined outer sleeve, 1132 Splined inner shaft, 114 Motor, 116 Drive square shaft. Detailed Implementation

[0028] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0029] 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. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0030] The following is combined Figures 1 to 6 The present invention provides a detailed description of an electric balance gate spindle drive connection structure and a balance gate according to an embodiment of the present invention.

[0031] like Figures 1 to 6As shown, an embodiment of the electric balancing door main shaft drive connection structure according to this utility model includes: a bearing seat 102, a slide rail 108, a slider 110, a spring-loaded square bushing 112, a motor 114, etc. The bearing seat 102 is installed below the door frame beam 104, corresponding to the position of the balancing door main shaft 106. One end of the spring-loaded square bushing 112 is provided with a spring 1123, which is sleeved inside the balancing door main shaft 106, and the other end is sleeved inside the bearing seat 102, facilitating a fixed connection between the balancing door main shaft 106 and the motor 114. A slide rail 108 is provided below the door frame beam 104. The upper part of the slider 110 is slidably connected to the slide rail 108, and the lower part of the slider 110 is connected to the door leaf, facilitating the movement of the door leaf. The motor 114 is installed above the door frame beam 104, inside the door frame, and is separated from the slide rail 108, saving space. The motor 114 has a drive square shaft 116, which is connected to a spring-loaded square shaft sleeve 112 fitted inside the bearing seat 102. The motor 114 can drive the main shaft 106 of the balance door to rotate. Thus, through the vertical separation design of the motor 114 and the slide rail 108, with the motor 114 above the door frame beam 104 and inside the door frame, and the slide rail 108 below the door frame beam 104 and connected to the door leaf through the slider 110, the door leaf only needs to meet the width of the slide rail 108. The door leaf can be designed to be narrower, meeting the market demand for narrower door leaf balance doors. Moreover, the motor 114 drives the main shaft 106 of the balance door to drive the support arm to pull the door leaf to rotate, resulting in high stability and reliability. The elastic square shaft sleeve 112 is very convenient and easy to operate during installation and maintenance. Moreover, the spring 1123 can make the elastic square shaft sleeve 112 fit tightly with the drive square shaft 116 of the motor 114, making it difficult to fall off and separate from the balance door main shaft 106, and the connection is very reliable.

[0032] Furthermore, such as Figure 3 and Figure 4 As shown, the elastic square shaft sleeve 112 includes: an outer sleeve 1121 with an elongated mounting hole 1122 at its bottom; a spring 1123 inside the outer sleeve 1121; and an inner sleeve 1124 inside the outer sleeve 1121 and above the spring 1123. A bolt 1125 is provided at the bottom of the inner sleeve 1124 to pass through the elongated mounting hole 1122, connecting the inner sleeve 1124 and the outer sleeve 1121. The outer sleeve 1121 is welded to the corresponding position on the main shaft of the balance door to fix the elastic square shaft sleeve. This connects the main shaft of the balance door 106 to the drive shaft 116 of the motor 114, facilitating installation. The elastic square shaft sleeve 112 is fixedly connected to the main shaft of the balance door 106, providing greater reliability and stability. Furthermore, the built-in spring 1123 and elongated mounting hole 1122 allow for some adjustment of the bolt 1125, offering greater adaptability and easier installation.

[0033] Furthermore, such as Figure 5 As shown, the elastic square bushing 112 includes: an upper outer sleeve 1127 and a lower outer sleeve 1128 that are fitted together, wherein the lower outer sleeve 1128 is provided with a U-shaped mounting hole 1129; a spring 1123, which is placed inside the lower outer sleeve 1128; and an inner sleeve 1124, the lower part of which is placed inside the lower outer sleeve 1128 and above the spring 1123, and the upper part of which is placed inside the upper outer sleeve 1127. A key 1130 is provided at the bottom of the inner sleeve 1124 to pass through the U-shaped mounting hole 1129, thereby connecting the inner sleeve 1124 and the lower outer sleeve 1128. The upper outer sleeve 1127 and the lower outer sleeve 1128 are respectively fixedly installed inside the main shaft of the balance door to fix the elastic square bushing. This makes installation easier and improves performance, quality, and reliability.

[0034] Furthermore, such as Figure 4 and Figure 5 As shown, the inner component 1128 has a square hole 1132 inside that matches the drive square shaft 116. Thus, it can be reliably connected to the drive square shaft 116 of the motor 114, and the two can rotate together.

[0035] Furthermore, such as Figure 6 As shown, the elastic square shaft sleeve 112 includes: a splined outer sleeve 1131, welded inside the main shaft 106 of the balance gate; a spring 1123, placed inside the splined outer sleeve 1131; and a splined inner shaft 1132, placed inside the splined outer sleeve 1131 and positioned above the spring 1123. Thus, the spring force allows the elastic square shaft sleeve 112 to fit tightly against the drive square shaft 116 of the motor, preventing it from easily falling off and separating from the main shaft 106 of the balance gate.

[0036] Furthermore, such as Figure 6 As shown, the splined inner shaft 1132 has a square hole 1126 inside that matches the drive square shaft 116. Thus, it can be reliably connected to the drive square shaft 116 of the motor 114, and the two can rotate together.

[0037] According to an embodiment of the present invention, a balancing gate adopts the electric balancing gate main shaft drive connection structure of any of the above embodiments.

[0038] The working process of the electric balance gate main shaft drive connection structure proposed in this utility model is as follows:

[0039] The forward and reverse rotation of motor 114 drives the drive square shaft 116 to rotate. At the same time, the elastic square shaft sleeve 112 and the balance door main shaft 106, which are fixedly connected to it, rotate accordingly, driving the upper and lower support arms to pull the door leaf to rotate. The slider 110 slides on the slide rail 108 along with the rotation of the door leaf to ensure balance, thereby realizing the opening and closing of the door leaf.

[0040] In this utility model, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "install," "connect," "join," and "fix" should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "join" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0041] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0042] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0043] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. 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 electrically balanced door hub drive connection structure, characterized by, include: The slide rail is located below the door frame beam; the slider has its upper part slidably connected to the slide rail and its lower part connected to the door leaf; the motor is installed above the door frame beam and has a drive shaft; the elastic square shaft sleeve has a spring at one end, which is sleeved inside the balance door main shaft to achieve synchronous rotation of the two, and the other end is sleeved on the drive shaft to drive the balance door main shaft to rotate through the motor.

2. The electrically balanced door hub drive connection structure of claim 1, wherein, The elastic square bushing includes: an outer sleeve with an elongated mounting hole at its bottom; a spring placed inside the outer sleeve; and an inner sleeve placed inside the outer sleeve and above the spring. A bolt is provided at the bottom of the inner sleeve to pass through the elongated mounting hole, thereby connecting the inner and outer sleeves. The outer sleeve is welded to the corresponding position on the main shaft of the balance door to fix the elastic square bushing.

3. The electrically balanced door hub drive connection structure of claim 1, wherein, The elastic square bushing includes: an upper outer sleeve and a lower outer sleeve that fit together, wherein the lower outer sleeve has a U-shaped mounting hole; a spring that is placed inside the lower outer sleeve; and an inner sleeve, wherein the lower part of the inner sleeve is placed inside the lower outer sleeve and above the spring, and the upper part of the inner sleeve is placed inside the upper outer sleeve. A key is provided at the bottom of the inner sleeve to pass through the U-shaped mounting hole to connect the inner sleeve and the lower outer sleeve. The upper outer sleeve and the lower outer sleeve are respectively fixedly installed inside the main shaft of the balance door to fix the elastic square bushing.

4. The electric balance gate main shaft drive connection structure according to claim 2 or 3, characterized in that, The inner kit has a square hole inside that matches the drive shaft.

5. The electrically balanced door hub drive connection structure of claim 1, wherein, The elastic square shaft sleeve includes: a splined outer sleeve welded inside the main shaft of the balance door; a spring placed inside the splined outer sleeve; and a splined inner shaft placed inside the splined outer sleeve and above the spring.

6. The electric balance gate main shaft drive connection structure according to claim 5, characterized in that, The splined inner shaft has a square hole inside that matches the drive square shaft.

7. The electric balance gate main shaft drive connection structure according to any one of claims 1 to 3, characterized in that, The elastic square bushing is connected to the drive square shaft via a bearing seat, which is installed below the door frame beam and corresponds to the position of the balance door main shaft.

8. A balanced door, characterized in that The electric balance gate main shaft drive connection structure according to any one of claims 1 to 7 is adopted.