Mute guide rail device of B-pillar-free sliding door

Abstract

The utility model relates to a car door guide rail, in particular to a mute guide rail device of a B-pillar-free sliding door. Comprising a guide rail, a vehicle door bearing and a mute plate, the mute plate is fixedly arranged on the upper surface of the guide rail, the vehicle door bearing is arranged on the mute plate, and the mute plate is arranged between the vehicle door bearing and the guide rail in a spaced mode; by the adoption of the scheme, the mute guide rail device of the B-column-free sliding door can effectively reduce noise, and is economical, applicable and convenient to disassemble.

Description

Technical Field

[0001] The utility model relates to a door guide rail, in particular to a silent guide rail device for a sliding door without a B-pillar. Background Art

[0002] The guide rail of the sliding door is an important carrier that supports the movement of the door to open or close. It provides the contact surface for the rolling of the door hinge bearing. Among them, the lower guide rail is particularly important, which bears a large part of the weight of the door.

[0003] Conventional guide rails are made of metal steel plates by stamping or bending. In addition, due to the weight of the door, in order to ensure the effectiveness and life of the door hinge bearing, the door hinge bearing will use a metal structure. Therefore, the bearing and the guide rail are two metal surfaces in contact and rolling. In this process, there will be inevitable abnormal noise, and some sounds will even be very sharp, resulting in a poor experience for passengers.

[0004] At present, an optimized solution has also emerged. The outer side of the bearing adopts a plastic coating structure to form a plastic coating layer, so that the contact surface between the bearing and the guide rail becomes the contact surface between the metal surface and the plastic surface. This measure can partially improve the abnormal noise, but it cannot completely eliminate it and has limitations. The plastic coating layer of the bearing is limited by the physical properties of the material itself and cannot bear the heavy weight of the door. Moreover, under long-term use, its durability is poor, and the plastic coating layer will crack and wear, causing the bearing to fail and the door cannot be opened or closed normally.

[0005] In addition, the lower guide rail of a sliding door without a B-pillar can only be arranged outside the sealing strip (after the door is closed). During the driving of the vehicle, road dust and gravel will enter the lower guide rail, creating an extremely harsh working environment, which brings greater difficulties to the rolling of the hinge bearing, thereby reducing the service life of the bearing and causing louder abnormal noises. Moreover, due to the harsh working conditions of the guide rail, once the guide rail or hinge bearing is damaged, the entire guide rail or hinge needs to be replaced, which is costly. Utility Model Content

[0006] In order to solve the above technical problems, the utility model intends to provide a silent guide rail device for a sliding door without a B-pillar, which can effectively solve the abnormal noise generated when the door hinge bearing runs on the guide rail, and is economical, applicable and easy to disassemble.

[0007] The silent guide rail device of the sliding door without a B-pillar in this solution comprises a guide rail, a door bearing and a silent plate. The silent plate is fixed on the upper surface of the guide rail, and the door bearing is arranged on the silent plate.

[0008] With the above structure, a silent plate is provided between the door bearing and the guide rail, which can effectively isolate abnormal noise caused by metal contact and has the function of reducing vibration, thereby achieving a silent effect.

[0009] Furthermore, the sound-absorbing plate includes a frame and a sound-absorbing pad, wherein the sound-absorbing pad is fixedly arranged on the lower surface of the frame, and the sound-absorbing pad is fixedly arranged on the upper surface of the guide rail.

[0010] With the above structure, the skeleton structure does not affect the smooth sliding of the door bearing, and the sound-absorbing pad can effectively achieve the effects of attraction and shock absorption.

[0011] Furthermore, the frame is provided with a plastic coating layer, which can effectively change the contact surface between the bearing and the guide rail into a contact surface between a metal surface and a plastic surface, and this measure can partially improve abnormal noise.

[0012] Furthermore, the frame is a stainless steel belt, which is strong and durable.

[0013] Furthermore, the sound absorbing pad is fixed to the upper surface of the guide rail by double-sided tape, which is convenient for installation and removal.

[0014] Furthermore, the sound absorbing pad is adhered to the plastic coating layer on the lower surface of the frame.

[0015] Furthermore, the noise-reducing plate is fixedly connected to the sheet metal hole of the vehicle via a buckle.

[0016] Furthermore, a locking pin is also provided on the buckle.

[0017] The utility model has the advantages that the door bearing slides on the guide rail through the mute plate, which can effectively reduce the noise generated when the door bearing runs on the guide rail, and the mute plate has a simple structure, is economical and applicable, and is easy to install and disassemble. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of a first embodiment of the silent guide rail device for a sliding door without a B-pillar according to the utility model;

[0019] Figure 2 for Figure 1 A magnified cross-sectional view of the middle door bearing;

[0020] Figure 3 for Figure 1 The enlarged cross-sectional view at A in the middle;

[0021] Figure 4 It is a structural schematic diagram of a second embodiment of the silent guide rail device for a sliding door without a B-pillar according to the utility model;

[0022] Figure 5 for Figure 4 A partial enlarged view of the middle soundproof panel.

[0023] In the figure, 1 is a guide rail, 2 is a door bearing, 3 is a mute board, 4 is a sound-absorbing pad, 5 is a frame, 6 is a plastic coating layer, 7 is a buckle, 8 is a locking pin, 2-1 is a load-bearing wheel, 2-2 is a bearing bracket, and 2-3 is a load-bearing wheel pin. DETAILED DESCRIPTION

[0024] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments:

[0025] Example 1

[0026] like Figure 1 , 2 As shown in Figures 3 and 4, the present invention provides a silent guide rail device for a sliding door without a B-pillar and a split guide rail, comprising a guide rail 1, a door bearing 2 and a silent plate 3, wherein the door bearing 2 is a hinged bearing, and its load-bearing wheel 2-1 made of stainless steel is used for sliding on the guide rail 1. The silent plate 3 is attached to the upper surface of the guide rail 1 and is spaced between the load-bearing wheel 2-1 and the guide rail 1. The front, middle and rear ends of the silent plate 3 in the length direction are also provided with buckles 7 that are clamped to the sheet metal holes of the vehicle door at the edge of the guide rail 1, and a locking pin 8 is inserted into the buckle 7 to fix it.

[0027] The silent board 3 includes a sound-absorbing pad 4, a lower surface plastic coating layer 6, a frame 5 and an upper surface plastic coating layer 6 from bottom to top. The frame 5 is covered with the plastic coating layer 6 in all directions by spraying or dipping. The sound-absorbing pad 4 is attached to the plastic coating layer on the lower surface of the frame 5 by glue. The plastic coating layer 6 directly contacts the load-bearing wheel 2-1 instead of metal. At the same time, the sound-absorbing pad 4 plays a role of buffering and sound insulation, which can effectively reduce the noise generated when the load-bearing wheel 2-1 is running. In this embodiment, the material used for the sound-absorbing pad 4 is felt.

[0028] The lower surface of the sound-absorbing pad 4 is bonded to the upper surface of the guide rail 1 by 3M double-sided adhesive. Installation method: First, position the mute board 3 with the buckle 7, then tear off the 3M double-sided adhesive on the sound-absorbing pad 4, stick it on the guide rail 1, and then press the locking pin 8 on the buckle 7;

[0029] In this embodiment, the skeleton 5 is a stainless steel belt.

[0030] Example 2

[0031] like Figure 4 , 5As shown, the present solution provides a silent guide rail device for a sliding door without a B-pillar and suitable for an integrated guide rail, comprising a guide rail 1, a door bearing 2 and a silent plate 3, wherein the door bearing 2 comprises a bearing bracket 2-2, a load-bearing wheel pin 2-3 and a load-bearing wheel 2-1, and the load-bearing wheel 2-1 made of stainless steel is used for sliding on the guide rail 1. The silent plate 3 is attached to the upper surface of the guide rail 1, and is spaced between the load-bearing wheel 2-1 and the guide rail 1. The front, middle and rear ends of the silent plate 3 in the length direction are also provided with buckles (not shown in the figure) that are snap-connected to the sheet metal holes of the vehicle door at the edge of the guide rail 1, and a locking pin is inserted into the buckle to fix it.

[0032] The silent board 3 includes a sound-absorbing pad 4, a lower surface plastic coating layer 6, a frame 5 and an upper surface plastic coating layer 6 from bottom to top. The frame 5 is covered with the plastic coating layer 6 in all directions by spraying or dipping. The sound-absorbing pad 4 is attached to the plastic coating layer on the lower surface of the frame 5 by glue. The plastic coating layer 6 directly contacts the load-bearing wheel 2-1 instead of metal. At the same time, the sound-absorbing pad 4 plays a role of buffering and sound insulation, which can effectively reduce the noise generated when the load-bearing wheel 2-1 is running.

[0033] The lower surface of the sound absorbing pad 4 is bonded to the upper surface of the guide rail 1 by 3M double-sided adhesive. The installation method is the same as that of the first embodiment.

[0034] In this embodiment, the skeleton 5 is a stainless steel belt.

[0035] The silent guide rail device of the sliding door without B-pillar using the above-mentioned embodiments 1 and 2 can effectively isolate the abnormal noise caused by metal contact and reduce vibration, thereby achieving a silent effect. The effects that can be achieved through experimental verification include:

[0036] 1. The sound pressure level is reduced by 2db;

[0037] 2. Loudness reduction <1sone;

[0038] 3. There is no significant change in sharpness.

[0039] The above is only an embodiment of the utility model, and the common knowledge such as the known specific structure and characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, several deformations and improvements can be made without departing from the structure of the utility model, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent.

Claims

1. A silent guide rail device for a sliding door without a B-pillar, characterized in that: The invention comprises a guide rail (1), a door bearing (2) and a silent plate (3), wherein the silent plate (3) is fixedly arranged on the upper surface of the guide rail (1), and the door bearing (2) is arranged on the silent plate (3); the silent plate (3) comprises a frame (5) and a sound absorbing pad (4), wherein the sound absorbing pad (4) is fixedly arranged on the lower surface of the frame (5), and the sound absorbing pad (4) is fixedly arranged on the upper surface of the guide rail (1).

2. The silent guide rail device for a sliding door without a B-pillar according to claim 1, characterized in that: The skeleton (5) is provided with a plastic coating layer (6).

3. The silent guide rail device for a sliding door without a B-pillar according to claim 1 or 2, characterized in that: The skeleton (5) is a stainless steel belt.

4. The silent guide rail device for a sliding door without a B-pillar according to claim 1, characterized in that: The sound absorbing pad (4) is fixed to the upper surface of the guide rail (1) by means of double-sided adhesive tape.

5. The silent guide rail device for a sliding door without a B-pillar according to claim 2, characterized in that: The sound absorbing pad (4) is adhered to the plastic coating layer (6) on the lower surface of the frame (5).

6. The silent guide rail device for a sliding door without a B-pillar according to claim 1, characterized in that: The noise-reducing plate (3) is also fixedly connected to the sheet metal hole of the vehicle via a buckle (7).

7. The silent guide rail device for a sliding door without a B-pillar according to claim 6, characterized in that: The buckle (7) is also provided with a locking pin (8).

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