Concealed fixing structure of bus handrail base

Abstract

The utility model discloses a built-in fixing structure of a bus handrail base, and belongs to the technical field of bus interior decoration devices. The device comprises a handrail arranged in a carriage; the armrest is characterized in that a cavity is arranged at the connecting part of the lower bottom of the armrest and the carriage bottom plate; an inner joint is mounted in the cavity; a positioning hole is formed in the position, opposite to the inner connector, of the compartment bottom plate. A positioning piece is arranged on the inner joint; one end of the positioning piece penetrates through the positioning hole and then is installed on the lower portion of the carriage bottom plate. The handrail base fixing structure effectively solves the problems that a traditional handrail base fixing structure used at present is prone to dust accumulation, inconvenient to clean and prone to loosening.

Description

Technical Field

[0001] This utility model relates to the technical field of bus interior decoration devices, specifically to a concealed fixing structure for a bus handrail base. Background Technology

[0002] In existing bus interior designs, handrails serve as crucial support components for passengers standing, and the way their bases are fixed directly impacts the vehicle's overall aesthetics, durability, and ease of cleaning. Traditional handrail bases are typically secured with exposed screws or clips. This structure not only easily accumulates dust and dirt but may also loosen or even break over time, affecting passenger safety. Therefore, it is necessary to develop a handrail base that eliminates dirt accumulation, facilitates cleaning, and offers structural stability. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide an internal fixing structure for the base of a bus handrail, so as to solve the problems that the traditional handrail base fixing structure currently used is prone to dust accumulation, inconvenient to clean and easy to loosen.

[0004] To solve the above problems, this utility model provides the following technical solution:

[0005] An internal fixing structure for a bus handrail base; it includes a handrail installed inside the bus compartment; characterized in that: a cavity is provided at the connection between the bottom of the handrail and the floor of the bus compartment; an inner connector is installed in the cavity; a positioning hole is opened on the floor of the bus compartment at a position opposite to the inner connector; a positioning element is provided on the inner connector; one end of the positioning element passes through the positioning hole and is installed on the lower part of the floor of the bus compartment.

[0006] The handrail has an H-shaped double-leg combination bar structure; both legs of the handrail are connected to the carriage floor through positioning parts on the inner joint.

[0007] The inner connector is an expansion inner connector structure; a stepped through hole is opened on the inner connector along its axial direction; the positioning element is installed at the through hole.

[0008] Preferably, the inner joint is capable of vertical movement within the cavity; limit holes are provided on the side walls of both the inner joint and the handrail; countersunk bolts are detachably installed at the limit holes.

[0009] Furthermore, the limiting hole on the inner connector communicates with the through hole of the step; after the positioning component is installed, the insertion end of the countersunk bolt does not interfere with the positioning component.

[0010] The positioning component is a bolt assembly including a bolt, a nut, and a resilient locking ring washer; the bolt passes through a positioning hole in the floor of the carriage and is then locked in place by the resilient locking ring washer and the nut.

[0011] Sealing rings are also installed at the joints of the handrails, internal joints, and the floor of the carriage.

[0012] The beneficial effects of this utility model are reflected in the following aspects:

[0013] 1. By hiding the positioning components and internal connectors inside the handrail cavity, the dust accumulation dead corners caused by traditional exposed screws are effectively avoided, significantly improving the overall aesthetics, while facilitating daily cleaning and maintenance and reducing hygiene management costs.

[0014] 2. The combination of an expansion joint and a flexible locking bolt assembly, along with a countersunk bolt limiting design, significantly improves connection durability and ensures passenger safety.

[0015] 3. Adaptive Installation Adjustment: The vertically movable structure of the internal connector and the design of the corresponding limiting holes allow for fine-tuning of the height during installation, precisely adapting to the tolerances of the carriage floor and ensuring the verticality of the handrail; the elastic locking ring can automatically adjust the pressure according to different floor thicknesses, ensuring a stable and reliable connection.

[0016] 4. A sealing ring is installed at the interface between the carriage and the floor to form a sealed protective layer, which effectively prevents liquid penetration and fine dust from entering the internal structure, avoids corrosion of metal parts, and extends the overall service life. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the utility model device installed inside the carriage in this embodiment;

[0018] Figure 2 This is a schematic diagram of the structure of the utility model device in this embodiment;

[0019] Explanation of reference numerals in the attached diagram: 1. Handrail, 2. Cavity, 3. Internal connector, 4. Positioning component, 5. Countersunk bolt, 6. Sealing ring. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0021] Example:

[0022] Reference Figure 1 This embodiment provides a concealed fixing structure for a bus handrail base; it includes a handrail 1 installed inside the passenger compartment; characterized in that: a cavity 2 is provided at the connection between the bottom of the handrail 1 and the floor of the passenger compartment; an inner connector 3 is installed in the cavity 2; a positioning hole is opened on the floor of the passenger compartment at a position opposite to the inner connector 3; a positioning element 4 is provided on the inner connector 3; one end of the positioning element 4 passes through the positioning hole and is installed on the lower part of the floor of the passenger compartment.

[0023] The structure of the handrail 1 is a double-leg combination bar structure similar to an h-shape; both legs of the handrail 1 are connected to the car floor through the positioning part 4 on the inner connector 3.

[0024] The inner connector 3 is an expansion inner connector structure; a stepped through hole is opened on the inner connector 3 along its axial direction; the positioning element 4 is installed at the through hole.

[0025] The inner connector 3 can move vertically within the cavity 2; limit holes are provided on the side walls of both the inner connector 3 and the handrail 1; countersunk bolts 5 are detachably installed at the limit holes. The limit holes on the inner connector 3 communicate with the stepped through holes; after the positioning component 4 is installed, the insertion end of the countersunk bolt 5 does not interfere with the positioning component 4. In this embodiment, the countersunk bolt 5 is an internal hexagon countersunk bolt structure; it is possible to consider setting guide ribs or other structures inside the cavity 2 to facilitate the pre-installation and positioning of the inner connector 3; in addition, the cavity depth should be greater than the height of the inner connector to reserve displacement space for vertical adjustment.

[0026] Positioning component 4 is a bolt assembly including a bolt, a nut, and a resilient locking ring washer; the bolt passes through the positioning hole on the floor of the carriage and is then locked in place by the resilient locking ring washer and the nut.

[0027] A sealing ring 6 is also provided at the junction of the handrail, the inner joint 3, and the floor of the carriage. In this embodiment, the size of the sealing ring is consistent with the size of the outer perimeter of the handrail.

[0028] During installation, first, the bolts of the inner connector and positioning parts are pre-installed into the cavity at the bottom of the handrail after being spliced ​​together. Then, the entire handrail is placed at the position of the car floor plate with the pre-drilled positioning holes. On the underside of the car, the bolts of the nuts and elastic locking rings are tightened with special tools to firmly fix the base to the car floor plate.

[0029] After replacing the original open base with the handrail base featuring the concealed fixed structure, actual testing revealed that the new structure maintained good stability even after prolonged operation, while significantly reducing the frequency of cleaning, earning unanimous praise from passengers and operators.

Claims

1. A concealed fixing structure for a bus handrail base, comprising a handrail (1) installed inside the passenger compartment; characterized in that: A cavity (2) is provided at the connection between the bottom of the handrail (1) and the bottom of the carriage floor; an inner connector (3) is installed in the cavity (2); a positioning hole is opened on the bottom of the carriage floor opposite to the inner connector (3); a positioning element (4) is provided on the inner connector (3); one end of the positioning element (4) passes through the positioning hole and is installed on the lower part of the bottom of the carriage floor.

2. The concealed fixing structure for a bus handrail base according to claim 1, characterized in that: The structure of the handrail (1) is a double-leg combination rod structure similar to an h-shape; both legs of the handrail (1) are connected to the car floor through the positioning part (4) on the inner connector (3).

3. The concealed fixing structure for a bus handrail base according to claim 1, characterized in that: The inner connector (3) is an expansion inner connector structure; a stepped through hole is opened on the inner connector (3) along its axial direction; the positioning part (4) is installed at the through hole.

4. The concealed fixing structure for a bus handrail base according to claim 1 or 3, characterized in that: The inner connector (3) can move vertically within the cavity (2); limit holes are provided on the side walls of both the inner connector (3) and the handrail (1); countersunk bolts (5) are detachably installed at the limit holes.

5. The concealed fixing structure for a bus handrail base according to claim 4, characterized in that: The limiting hole on the inner connector (3) is connected to the step through hole; when the positioning part (4) is installed, the insertion end of the countersunk bolt (5) does not interfere with the positioning part (4).

6. The concealed fixing structure for a bus handrail base according to claim 1, characterized in that: The positioning component (4) is a bolt assembly including a bolt, a nut and a resilient locking ring washer; wherein the bolt passes through the positioning hole on the floor of the carriage and is locked in place by the resilient locking ring washer and the nut.

7. The concealed fixing structure for a bus handrail base according to claim 1, characterized in that: A sealing ring (6) is also provided at the joints of the handrail, the inner joint (3) and the bottom plate of the carriage.

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