Bouncing lower wheel of sliding door

Abstract

The utility model provides a bouncing lower wheel of a sliding door, which belongs to the technical field of sliding doors and comprises a bouncing lower wheel outer shell, a bouncing lower wheel inner shell, a torsion spring, a wheel inner steel sheet and a wheel body structure. According to the bouncing lower wheel, the two sets of wheel bodies are installed through the wheel inner steel sheet, and the middle of the wheel inner steel sheet is rotationally installed on the inner side of the bouncing lower wheel inner shell through the first pin shaft, so that the two sets of wheel bodies can synchronously swing along the axis of the first pin shaft, and it is guaranteed that the two sets of wheel bodies can make contact with the ground in the using process; according to the bouncing lower wheel, the bouncing lower wheel inner shell is arranged on the bouncing lower wheel outer shell, the torsional spring is arranged on the bouncing lower wheel inner shell, the bouncing lower wheel inner shell is driven by means of elasticity of the torsional spring, the bouncing lower wheel inner shell can elastically slide relative to the bouncing lower wheel outer shell, and the structure of the two wheel bodies can guarantee that the bouncing lower wheel of the sliding door shows excellent stability in use.

Description

Technical Field

[0001] This utility model relates to the field of sliding door technology, specifically to a sliding door spring-loaded lower wheel. Background Technology

[0002] The bottom spring-loaded sliding door is a hardware accessory used at the bottom of trackless sliding doors. Its main function is to achieve smooth sliding of the door, anti-sway, and shock absorption and noise reduction through a spring-loaded mechanism, especially when used on uneven ground.

[0003] Traditional sliding door spring-loaded lower wheels are mostly designed as single-wheel structures, which still have insufficient stability during use. Therefore, this utility model provides a new type of sliding door spring-loaded lower wheel. Utility Model Content

[0004] To address the issue of insufficient stability in traditional sliding door spring-loaded lower wheels, this invention provides a new type of spring-loaded lower wheel for sliding doors.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A sliding door pop-up wheel includes:

[0007] The lower bouncing wheel housing is slidably fitted with the aluminum alloy profile at the bottom of the door frame.

[0008] The inner shell of the lower bouncing wheel is slidably installed inside the outer shell of the lower bouncing wheel, and a torsion spring is installed on the inner shell of the lower bouncing wheel. The first pin of the torsion spring abuts against the inner shell of the lower bouncing wheel, and the second pin of the torsion spring abuts against the inside of the outer shell of the lower bouncing wheel.

[0009] The wheel has two sets of steel plates arranged in parallel. The wheel body is rotatably mounted between the two sets of steel plates and near both ends of the steel plates. The middle of the two sets of steel plates is rotatably mounted on the inner side of the inner shell of the bouncing wheel through a first pin.

[0010] As a further description of the above technical solution:

[0011] A sliding strip is fixedly provided on the side of the bouncing lower wheel housing, and a first screw aluminum positioning groove is opened on the side of the bouncing lower wheel housing facing the bottom aluminum alloy profile of the door frame.

[0012] As a further description of the above technical solution:

[0013] The two ends of the bouncy lower wheel shell are respectively fixedly provided with a first splicing component and a second splicing component, and the first splicing component and the second splicing component cooperate with each other.

[0014] As a further description of the above technical solution:

[0015] It also includes: a linkage door linkage lock component, wherein a third splicing component is fixedly installed on one side of the linkage door linkage lock component, the third splicing component being consistent with the first splicing component or the second splicing component, a second screw aluminum positioning groove is provided on the side of the linkage door linkage lock component facing the bottom aluminum alloy profile of the door frame, and a connecting plate hole and a positioning screw hole are provided on the side of the linkage door linkage lock component, wherein the positioning screw hole is perpendicular to the connecting plate hole, and one end of the positioning screw hole is connected to the connecting plate hole.

[0016] As a further description of the above technical solution:

[0017] The inner side of the lower bouncing wheel housing is provided with a vertical sliding opening, and the outer side of the lower bouncing wheel housing is provided with a protrusion corresponding to the vertical sliding opening.

[0018] The side of the outer shell of the bouncing lower wheel is provided with a sliding hole, and the side of the inner shell of the bouncing lower wheel is fixedly connected with a second pin, which slides in conjunction with the sliding hole.

[0019] As a further description of the above technical solution:

[0020] The inner shell of the bouncing lower wheel includes two sets of symmetrically arranged bouncing lower wheel inner shell units. The side of each bouncing lower wheel inner shell unit has a connecting hole, and the middle of each bouncing lower wheel inner shell unit has a first shaft hole. The first pin is engaged with the first shaft hole. The side of each bouncing lower wheel inner shell unit and near both ends have a second pin hole and a torsion spring mounting pin hole. The second pin is fixedly connected to the inside of the second pin hole. The torsion spring is rotatably mounted at the second pin hole through a shaft. The side of the bouncing lower wheel inner shell away from the bottom aluminum alloy profile of the door frame has a brush connection port.

[0021] As a further description of the above technical solution:

[0022] The wheel has two symmetrically arranged steel plates inside, and a second shaft hole is opened in the middle of the steel plate inside the wheel. The second shaft hole corresponds to the first shaft hole, and the first pin is engaged with the second shaft hole. The end of the steel plate inside the wheel is provided with a wheel mounting part, and the wheel body is rotatably mounted at the wheel mounting part through a shaft.

[0023] The beneficial effects of this utility model are:

[0024] This invention, through the design of a spring-loaded lower wheel outer shell, a spring-loaded lower wheel inner shell, a torsion spring, an inner steel plate, and a wheel body structure, utilizes the inner steel plate to mount two sets of wheel bodies. The middle of the inner steel plate is rotatably mounted on the inner side of the spring-loaded lower wheel inner shell via a first pin, allowing the two sets of wheel bodies to swing synchronously along the axis of the first pin. This ensures that both sets of wheel bodies can contact the ground during use. Furthermore, a torsion spring is installed on the inner shell of the spring-loaded lower wheel, and the elasticity of the torsion spring drives the inner shell, allowing it to slide elastically relative to the outer shell. This structure of the two sets of wheel bodies ensures that the spring-loaded lower wheel of the sliding door exhibits excellent stability during use. Attached Figure Description

[0025] To more clearly illustrate a sliding door pop-up wheel, the following diagram is shown;

[0026] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0027] Figure 2 This is a bottom view of the present invention;

[0028] Figure 3 This is a perspective view of the outer shell of the bouncing lower wheel of this utility model;

[0029] Figure 4 This is a perspective view of the inner shell of the bouncing lower wheel, the inner steel sheet of the wheel, and the wheel body of this utility model;

[0030] Figure 5 This is an exploded view of the inner shell of the bouncing lower wheel of this utility model;

[0031] Figure 6 This is a schematic diagram of the inner side of the inner shell of the bouncing lower wheel of this utility model;

[0032] Figure 7 This is a perspective view of the steel sheet inside the wheel of this utility model;

[0033] Figure 8 This is a perspective view of the linkage door linkage lock component of this utility model.

[0034] The labels in the attached diagram;

[0035] 1. Bouncing lower wheel outer shell; 1a. Sliding strip; 1b. First screw aluminum positioning groove; 1c. Vertical sliding opening; 1d. Sliding hole; 1e. First splicing piece; 1f. Second splicing piece; 2. Bouncing lower wheel inner shell; 201. Bouncing lower wheel inner shell unit; 201a1. First connecting hole; 201a2. Second connecting hole; 201b. Brush connecting port; 201c. First shaft hole; 201d1. Second pin hole; 201d2. Torsion spring assembly pin hole; 3. Torsion spring; 4. Wheel inner steel plate; 4a. Second shaft hole; 4b. Wheel mounting part; 5. Wheel body; 6. Linkage door linkage lock; 6a. Third splicing piece; 6b. Second screw aluminum positioning groove; 6c. Positioning screw hole; 6d. Connecting piece hole. Detailed Implementation

[0036] Please refer to the attached document. Figures 1-8 The present application provides a sliding door pop-up wheel, which includes a pop-up wheel outer shell 1, a pop-up wheel inner shell 2, a torsion spring 3, an inner steel sheet 4, and a wheel body 5.

[0037] The outer shell 1 of the pop-up lower wheel slides into the aluminum alloy profile at the bottom of the door frame. This connection method is consistent with the structure of the lower wheel device currently installed on the aluminum alloy profile at the bottom of the door frame, ensuring that the pop-up lower wheel of the sliding door is compatible with traditional trackless doors and windows. The inner shell 2 of the pop-up lower wheel is slidably installed inside the outer shell 1 of the pop-up lower wheel, and a torsion spring 3 is installed on the inner shell 2 of the pop-up lower wheel. The first pin of the torsion spring 3 abuts against the inner shell 2 of the pop-up lower wheel, and the second pin of the torsion spring 3 abuts against the inside of the outer shell 1 of the pop-up lower wheel. Under the action of the outer shell 1 of the pop-up lower wheel, the inner shell 2 of the pop-up lower wheel has an elastic tendency to move away from the outer shell 1 of the pop-up lower wheel. Two sets of steel plates 4 are arranged in parallel inside the wheel. The wheel body 5 is rotatably installed between the two sets of steel plates 4 and near the two ends of the steel plates 4. The middle of the two sets of steel plates 4 is rotatably installed on the inner side of the inner shell 2 of the pop-up lower wheel through the first pin.

[0038] When in use, the two wheel bodies 5 contact the ground downwards. Since the two sets of inner steel plates 4 connecting the two wheel bodies 5 are rotatably mounted on the inner side of the inner shell 2 of the bouncing lower wheel through the first pin, the two ends of the inner steel plates 4 can swing relative to the inner shell 2 of the bouncing lower wheel. Even on the inclined ground, the two wheel bodies 5 can contact the ground well. The inner shell 2 of the bouncing lower wheel is slidably mounted inside the outer shell 1 of the bouncing lower wheel, and a torsion spring 3 is installed on the inner shell 2 of the bouncing lower wheel. The first pin of the torsion spring 3 abuts against the inner shell 2 of the bouncing lower wheel, and the second pin of the torsion spring 3 abuts against the inside of the outer shell 1 of the bouncing lower wheel. Under the action of the outer shell 1 of the bouncing lower wheel, the inner shell 2 of the bouncing lower wheel has an elastic tendency to move away from the outer shell 1 of the bouncing lower wheel. In actual use, it can ensure that the inner shell 2 of the bouncing lower wheel always has a downward elastic force, ensuring that the two wheel bodies 5 always contact the ground.

[0039] In one embodiment, to ensure that the lower roller housing 1 and the bottom aluminum alloy profile of the door frame cannot move up and down, a sliding strip 1a is fixedly provided on the side of the lower roller housing 1. The sliding strip 1a serves to restrict the lower roller housing 1 from detaching from the bottom aluminum alloy profile of the door frame. To facilitate the positioning of the lower roller housing 1 and the bottom aluminum alloy profile of the door frame, a first screw aluminum positioning groove 1b is provided on the side of the lower roller housing 1 facing the bottom aluminum alloy profile of the door frame. That is, a self-tapping screw is driven into the corresponding position on the inner side of the bottom aluminum alloy profile of the door frame. The protruding part of the screw cooperates with the first screw aluminum positioning groove 1b, which can restrict the lower roller housing 1 from sliding at a predetermined position on the bottom aluminum alloy profile of the door frame.

[0040] In one embodiment, a first splicing component 1e and a second splicing component 1f are fixedly provided at both ends of the outer shell 1 of the pop-up lower wheel. The first splicing component 1e and the second splicing component 1f cooperate with each other. The first splicing component 1e and the second splicing component 1f have a T-shaped opening and a T-shaped block structure. In actual use, two or more sliding door pop-up lower wheels can be used to connect the two or more sliding door pop-up lower wheels end to end into a straight line, so that multiple wheel bodies 5 can be designed to adapt to different door and window installation requirements.

[0041] Generally, after the first splicing part 1e and the second splicing part 1f are put together, screws are used to fix the two together. In order to prevent dust from entering the inner cavity of the inner shell 2 of the bouncing wheel, a cover can be installed on the bottom surface of the outer shell 1 of the bouncing wheel. The cover has holes corresponding to the brush and the wheel body 5.

[0042] In one embodiment, to meet the usage requirements of the three-linkage sliding door, a linkage door linkage lock 6 is also designed. A third splicing piece 6a is fixedly installed on one side of the linkage door linkage lock 6. The third splicing piece 6a is consistent with the first splicing piece 1e or the second splicing piece 1f. That is, the third splicing piece 6a can also be installed on one end of the lower roller housing 1. The linkage door linkage lock 6 has a second screw aluminum positioning groove 6b on the side facing the bottom aluminum alloy profile of the door frame. The side of the linkage door linkage lock 6 has a connecting piece hole 6d and a positioning screw hole 6c. The positioning screw hole 6c is perpendicular to the connecting piece hole 6d, and one end of the positioning screw hole 6c is connected to the connecting piece hole 6d. In use, the connecting piece (metal piece) used for linkage installation is inserted into the connecting piece hole 6d, and then screws are used to install it at the positioning screw hole 6c to fix the connecting piece and the linkage door linkage lock 6 together.

[0043] In one embodiment, a vertical sliding opening 1c is provided on the inner side of the bouncing lower wheel shell 1, and a protrusion corresponding to the vertical sliding opening 1c is provided on the outer side of the bouncing lower wheel inner shell 2. The protrusion slides inside the vertical sliding opening 1c to ensure the stability of the bouncing lower wheel inner shell 2 relative to the bouncing lower wheel shell 1.

[0044] The side of the lower wheel housing 1 has a sliding hole 1d, and the side of the lower wheel inner housing 2 is fixedly connected to a second pin. The second pin slides with the sliding hole 1d. The purpose of the second pin design is to ensure the stability of the sliding of the lower wheel inner housing 2 relative to the lower wheel housing 1. Since the second pin can only slide in the sliding hole 1d, it limits the sliding distance of the lower wheel inner housing 2 relative to the lower wheel housing 1, thus preventing the lower wheel inner housing 2 from detaching from the lower wheel housing 1.

[0045] In one embodiment, the bouncing lower wheel inner shell 2 includes two sets of symmetrically arranged bouncing lower wheel inner shell units 201. Connecting holes are provided on the side of each bouncing lower wheel inner shell unit 201. The connecting holes include a first connecting hole 201a1 and a second connecting hole 201a2. The first connecting hole 201a1 is located at both ends of the bouncing lower wheel inner shell unit, and the second connecting hole 201a2 is located in the middle. Generally, one set of connecting holes on the two bouncing lower wheel inner shell units 201 is designed as a through hole, and the other set is designed as a blind hole. The two bouncing lower wheel inner shell units 201 are connected together using screws. A first shaft hole 201c is provided in the middle of the body 201. A first pin is engaged with the first shaft hole 201c. A second pin hole 201d1 and a torsion spring mounting pin hole 201d2 are provided on the side of the inner shell of the bouncing wheel 201 near both ends. The second pin is fixedly connected to the inside of the second pin hole 201d1. The torsion spring 3 is rotatably installed at the second pin hole 201d1 through a shaft. A brush connection port 201b is provided on the side of the inner shell of the bouncing wheel 2 away from the bottom aluminum alloy profile of the door frame. A brush can be installed in the brush connection port 201b. The brush is used to clean the dust of the wheel body 5 and the ground that the wheel body 5 is about to pass.

[0046] In one embodiment, two steel plates 4 are symmetrically arranged inside the wheel, and a second shaft hole 4a is provided in the middle of the steel plate 4. The second shaft hole 4a corresponds to the first shaft hole 201c, and the first pin is engaged with the second shaft hole 4a. A wheel mounting part 4b is provided at the end of the steel plate 4 inside the wheel. The wheel mounting part 4b protrudes toward the middle of the two steel plates 4 inside the wheel to stabilize the wheel body 5. The wheel body 5 is rotatably mounted at the wheel mounting part 4b through a shaft.

[0047] Other embodiments of the present invention will readily occur to those skilled in the art upon consideration of the specification and practice of the disclosure herein. This application is intended to cover any variations, uses, or adaptations of the present invention that follow the general principles of the present invention and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of the present invention are indicated by the following claims.

[0048] It should be understood that relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. This invention is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this invention is limited only by the appended claims.

Claims

1. A sliding door spring-loaded lower wheel, comprising a spring-loaded lower wheel housing (1), wherein the spring-loaded lower wheel housing (1) is slidably engaged with an aluminum alloy profile at the bottom of the door frame, characterized in that, Also includes: The inner shell (2) of the lower bouncing wheel is slidably installed inside the outer shell (1) of the lower bouncing wheel, and a torsion spring (3) is installed on the inner shell (2). The first pin of the torsion spring (3) abuts against the inner shell (2) of the lower bouncing wheel, and the second pin of the torsion spring (3) abuts against the inside of the outer shell (1) of the lower bouncing wheel. The inner steel sheet (4) of the wheel is arranged in two parallel sets. The wheel body (5) is rotatably installed between the two sets of inner steel sheets (4) and near the two ends of the inner steel sheets (4). The middle of the two sets of inner steel sheets (4) is rotatably installed on the inner side of the inner shell (2) of the bouncing wheel through the first pin.

2. The sliding door spring-loaded lower wheel according to claim 1, characterized in that: A sliding strip (1a) is fixedly provided on the side of the bouncing lower wheel housing (1), and a first screw aluminum positioning groove (1b) is provided on the side of the bouncing lower wheel housing (1) facing the bottom aluminum alloy profile of the door frame.

3. The sliding door spring-loaded lower wheel according to claim 2, characterized in that: The two ends of the bouncy lower wheel shell (1) are respectively fixedly provided with a first splicing component (1e) and a second splicing component (1f), and the first splicing component (1e) and the second splicing component (1f) cooperate with each other.

4. The sliding door spring-loaded lower wheel according to claim 3, characterized in that, Also includes: A linkage door linkage lock (6) is provided with a third splicing component (6a) fixedly installed on one side. The third splicing component (6a) is consistent with the first splicing component (1e) or the second splicing component (1f). The linkage door linkage lock (6) has a second screw aluminum positioning groove (6b) on the side facing the bottom aluminum alloy profile of the door frame. The linkage door linkage lock (6) has a connecting plate hole (6d) and a positioning screw hole (6c) on the side. The positioning screw hole (6c) is perpendicular to the connecting plate hole (6d), and one end of the positioning screw hole (6c) is connected to the connecting plate hole (6d).

5. The sliding door spring-loaded lower wheel according to claim 1, characterized in that: The inner side of the lower bouncing wheel housing (1) is provided with a vertical sliding opening (1c), and the outer side of the lower bouncing wheel inner housing (2) is provided with a protrusion corresponding to the vertical sliding opening (1c). The side of the outer shell (1) of the bouncing lower wheel is provided with a sliding hole (1d), and the side of the inner shell (2) of the bouncing lower wheel is fixedly connected with a second pin, which slides in cooperation with the sliding hole (1d).

6. The sliding door spring-loaded lower wheel according to claim 5, characterized in that: The inner shell (2) of the bouncing lower wheel includes two sets of symmetrically arranged bouncing lower wheel inner shell units (201). The side of the bouncing lower wheel inner shell unit (201) is provided with a connecting hole. The middle of the bouncing lower wheel inner shell unit (201) is provided with a first shaft hole (201c). The first pin is engaged with the first shaft hole (201c). The side of the bouncing lower wheel inner shell unit (201) and near both ends are provided with a second pin hole (201d1) and a torsion spring mounting pin hole (201d2). The second pin is fixedly connected to the inside of the second pin hole (201d1). The torsion spring (3) is rotatably installed at the second pin hole (201d1) through a shaft. The side of the bouncing lower wheel inner shell (2) away from the bottom aluminum alloy profile of the door frame is provided with a brush connection port (201b).

7. The sliding door spring-loaded lower wheel according to claim 6, characterized in that: Two steel plates (4) are symmetrically arranged inside the wheel, and a second shaft hole (4a) is opened in the middle of the steel plate (4). The second shaft hole (4a) corresponds to the first shaft hole (201c), and the first pin is engaged with the second shaft hole (4a). A wheel mounting part (4b) is provided at the end of the steel plate (4) inside the wheel, and the wheel body (5) is rotatably mounted at the wheel mounting part (4b) through a shaft.

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