A heavy-duty slide rail

Abstract

The utility model discloses a heavy pound slide rail belongs to slide rail technical field. Include: the outer rail, the middle rail is connected on the outer rail slidingly, and the middle rail side wall is connected with first plastic gyro wheel, second plastic gyro wheel, third plastic gyro wheel, fourth plastic gyro wheel and fifth plastic gyro wheel through bearing, third plastic gyro wheel and fourth plastic gyro wheel all are pasted with the inner wall of outer rail, the inner rail is connected on the middle rail slidingly, and the inner rail bottom fixedly connected with the damping part, first plastic gyro wheel and fifth plastic gyro wheel all are pasted with the inner rail, and the outer rail is fixedly connected with the dolly plastic cover, and the damping part is connected with the dolly plastic cover, the utility model discloses through setting multiple groups first plastic gyro wheel and fifth plastic gyro wheel in the middle rail side wall, and the gyro wheel all is pasted with the inner wall of outer rail, and the sliding friction of traditional slide rail is converted for rolling friction, has reduced the sliding resistance between the inner rail, the middle rail and the outer rail, has effectively avoided the jam phenomenon in the sliding process, makes the slide rail opening and closing operation more labor saving, and the hand feeling is more smooth.

Description

Technical Field

[0001] This utility model relates to the field of slide rail technology, and in particular to a heavy-duty slide rail. Background Technology

[0002] In furniture, industrial equipment, storage devices and other fields, slide rails are the core components that enable the sliding opening and closing of parts. They have a wide range of applications and stringent performance requirements.

[0003] Currently, most traditional drawer slides on the market use a sliding friction structure, which results in high resistance during sliding, making them prone to jamming and affecting the user experience. Furthermore, the support structure of traditional drawer slides is simple, with few fulcrums and limited load-bearing capacity, making it difficult to meet the needs of heavy-duty applications such as heavy doors and industrial storage drawers. In addition, during closing, the lack of an effective damping structure means that the impact between the door or drawer and the slide body can generate significant noise, and the impact force can accelerate component wear, shortening the lifespan of the slide. While some drawer slides have added simple damping components, the damping effect is poor, and there is still an impact when closing, failing to achieve a smooth and quiet closure. Utility Model Content

[0004] The purpose of this utility model is to solve the problems mentioned in the background art and to propose a heavy-duty slide rail.

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

[0006] A heavy-duty slide rail includes:

[0007] outer rail;

[0008] The middle rail is slidably connected to the outer rail, and the middle rail sidewall is connected to the first plastic roller, the second plastic roller, the third plastic roller, the fourth plastic roller and the fifth plastic roller via bearings;

[0009] The third and fourth plastic rollers are both in contact with the inner wall of the outer rail;

[0010] The inner rail is slidably connected to the middle rail, and a damping part is fixedly connected to the bottom of the inner rail;

[0011] Both the first and fifth plastic rollers are in contact with the inner rail;

[0012] A paddle plastic sleeve is fixedly connected to the outer rail, and the damping part is connected to the paddle plastic sleeve.

[0013] Preferably, the damping part includes a main body, a connecting plate, a sliding hook, and a damping rod. The sliding hook is slidably connected in the limiting groove of the main body and is rotatably connected to the connecting plate. The damping rod is fixedly connected in the main body, and the driving end of the damping rod is fixedly connected to the connecting plate.

[0014] Furthermore, at least one tension spring is fixedly connected to the connecting plate, and the end of the tension spring away from the connecting plate is fixedly connected to the main body.

[0015] Preferably, a limiting card is connected to the sliding hook, and the limiting card is connected to the plastic sleeve of the lever.

[0016] Furthermore, a ramp groove is provided on the bottom wall of the outer rail, and the ramp groove matches the second plastic roller and the third plastic roller.

[0017] Furthermore, an anti-collision pad is fixedly connected to the bottom wall of the outer rail, and the anti-collision pad abuts against the inner rail.

[0018] Furthermore, an adjusting screw is connected to the inner rail.

[0019] Compared with the prior art, this utility model provides a heavy-duty slide rail with the following advantages:

[0020] 1. This utility model cleverly transforms the sliding friction of traditional slide rails into rolling friction by installing multiple sets of plastic rollers on the side wall of the middle rail. The third and fourth plastic rollers are in contact with the inner wall of the outer rail, while the first and fifth plastic rollers are in contact with the inner rail. This significantly reduces the relative sliding resistance between the inner rail, middle rail, and outer rail. At the same time, the bearings of the second and third plastic rollers are reserved with a 0.5mm floating clearance, which ensures that the rollers tightly clamp the middle rail and inner rail, keeping the three moving synchronously. This effectively avoids the problems of jamming and asynchrony during sliding, making the opening and closing operation of the slide rail easier, with an extremely smooth feel, and achieving a complete closing effect.

[0021] 2. This utility model utilizes multiple evenly distributed support points formed by multiple sets of plastic rollers to evenly distribute and transmit heavy load pressure, achieving efficient force relief through multi-point support. Compared to traditional single-support structure slide rails, its load-bearing capacity is significantly improved, enabling it to stably support heavy loads such as heavy doors and industrial storage drawers. This effectively overcomes the load-bearing limitations of traditional slide rails, broadening their application range in furniture, industrial equipment, heavy storage devices, and other fields.

[0022] 3. This utility model uses anti-collision pads fixed to the bottom wall of the outer rail to buffer the direct impact between the inner and outer rails when the slide rail is closed and reset, significantly reducing impact noise. At the same time, the damping rod of the damping part works with the tension spring to provide a smooth damping force for the reset process, whether it is a light push or a strong push, avoiding the noise and impact generated by rapid impact, achieving a quiet and smooth closing effect and improving the user experience.

[0023] 4. This utility model uses a ramp groove on the bottom wall of the outer rail to precisely match the second and third plastic rollers. At the end of the drawer closing, the ramp structure can convert gravity into additional closing force, assisting the tension spring to overcome resistance and ensure that the slide rail is completely closed, avoiding the situation of incomplete closure. At the same time, the ramp structure can effectively prevent the drawer from accidentally sliding out automatically due to inertia or slight vibration, further improving the reliability and safety of the slide rail. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of a heavy-duty slide rail proposed in this utility model. Figure 1 ;

[0025] Figure 2 This is a schematic diagram of the damping section in a heavy-duty slide rail proposed in this utility model;

[0026] Figure 3 This is a schematic diagram of the internal structure of the damping section in a heavy-duty slide rail proposed in this utility model;

[0027] Figure 4 This utility model provides a schematic diagram of the structure of the outer rail in a heavy-duty slide rail. Figure 1 ;

[0028] Figure 5 This utility model provides a schematic diagram of the structure of the outer rail in a heavy-duty slide rail. Figure 2 ;

[0029] Figure 6 This is a schematic diagram of the structure of a heavy-duty slide rail proposed in this utility model. Figure 2 ;

[0030] Figure 7 This is a schematic diagram of the structure of the middle rail in a heavy-duty slide rail proposed in this utility model;

[0031] Figure 8 An exploded view of a heavy-duty slide rail proposed in this utility model;

[0032] Figure 9 This is a schematic diagram of the structure of a heavy-duty slide rail proposed in Embodiment 2 of this utility model.

[0033] In the diagram: 1. Inner rail; 101. Adjusting screw; 2. Middle rail; 201. First plastic roller; 202. Second plastic roller; 203. Anti-collision pad; 204. Third plastic roller; 205. Fourth plastic roller; 206. Fifth plastic roller; 3. Outer rail; 301. Paddle plastic sleeve; 302. Inclined groove; 4. Main body; 401. Tension spring; 402. Damping rod; 403. Connecting plate; 404. Sliding hook; 4041. Limiting clip; 405. Limiting groove. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0035] Example 1:

[0036] Reference Figures 1-8 A heavy-duty slide rail, comprising:

[0037] Outer rail 3;

[0038] The middle rail 2 is slidably connected to the outer rail 3, and the side wall of the middle rail 2 is connected by bearings to the first plastic roller 201, the second plastic roller 202, the third plastic roller 204, the fourth plastic roller 205 and the fifth plastic roller 206.

[0039] The third plastic roller 204 and the fourth plastic roller 205 are both in contact with the inner wall of the outer rail 3;

[0040] Inner rail 1 is slidably connected to middle rail 2, and a damping part is fixedly connected to the bottom of inner rail 1;

[0041] Both the first plastic roller 201 and the fifth plastic roller 206 are in contact with the inner rail 1;

[0042] A paddle plastic sleeve 301 is fixedly connected to the outer rail 3, and the damping part is connected to the paddle plastic sleeve 301.

[0043] By setting multiple sets of first plastic rollers 201 and multiple sets of fifth plastic rollers 206 on the middle rail 2, when the middle rail 2 and the inner rail 1 slide, compared with the sliding friction of traditional slide rails, the multiple sets of plastic rollers can change the sliding friction into rolling friction, thereby improving the smooth sliding between the slide rails.

[0044] The first plastic roller 201 is located above the second plastic roller 202;

[0045] Reference Figure 7In practical implementation, the first plastic roller 201, the fourth plastic roller 205, and the fifth plastic roller 206 are connected to the middle rail 2 via bearings, and the second plastic roller 202 and the third plastic roller 204 are connected to the middle rail 2 via bearings. When the bearings on the second plastic roller 202 and the third plastic roller 204 are installed in the mounting grooves on the middle rail 2, they have a floating clearance space of 0.5mm, thereby ensuring that the upper and lower plastic rollers can effectively clamp the inner rail 1 inside the middle rail 2, thus ensuring that the middle rail 2 and the inner rail 1 always maintain close and synchronous movement during movement; thus effectively solving the problem of asynchrony that may occur in the final closing stage of traditional slide rails, and realizing the function of gentle, smooth and completely closed slide rails.

[0046] At the same time, multiple sets of first plastic rollers 201 provide the main load-bearing support, and multiple fulcrums provide support and stress relief, thereby achieving a high load-bearing capacity.

[0047] It should be noted that the second plastic roller 202 is an auxiliary roller, used to reduce the possibility of the inner rail 1 and the outer rail 3 rubbing against each other when the inner rail 1 is closed, and at the same time to help support the inner rail 1 and ensure the sliding stability of the inner rail 1.

[0048] The damping part includes a main body 4, a connecting plate 403, a sliding hook 404 and a damping rod 402. The sliding hook 404 is slidably connected in the limiting groove 405 of the main body 4 and is rotatably connected to the connecting plate 403. The damping rod 402 is fixedly connected in the main body 4 and the driving end of the damping rod 402 is fixedly connected to the connecting plate 403.

[0049] It should be noted that the limiting groove 405 is an L-shaped arc groove.

[0050] At least one tension spring 401 is fixedly connected to the connecting plate 403, and the end of the tension spring 401 away from the connecting plate 403 is fixedly connected to the main body 4.

[0051] A limit card 4041 is connected to the sliding hook 404, and the limit card 4041 is connected to the plastic sleeve 301 of the paddle.

[0052] A ramp groove 302 is provided on the bottom wall of the outer rail 3. The second plastic roller 202 and the third plastic roller 204 are in contact with the inner bottom wall of the outer rail 3, and the ramp groove 302 is matched with the second plastic roller 202 and the third plastic roller 204.

[0053] Reference Figure 4 , Figure 5By creating a ramp groove 302 on the outer rail 3, on the one hand, the ramp structure can cleverly convert gravity into additional closing force in the final stage of drawer closing, effectively assisting the pull spring 401 to work, ensuring that the slide rail can easily overcome resistance and close completely, avoiding the situation of incomplete closure; on the other hand, it can prevent automatic sliding out. This ramp can reliably prevent the drawer from accidentally sliding out automatically due to inertia or slight vibration when no one is operating it, enhancing the safety and stability of use.

[0054] Reference Figures 2-6 When the device is turned on, the user pulls the inner rail 1. The limit card 4041 on the inner rail 1 hooks the plastic sleeve 301 of the lever. At this time, the sliding hook 404 slides in the limit groove 405. When the inner rail 1 is fully pulled out, the sliding hook 404 slides into the farthest end of the limit groove 405 and is positioned. At the same time, the tension spring 401 is stretched and the damping rod 402 is pulled out.

[0055] Reference Figure 4 , Figure 5 and Figure 8 When the inner rail 1 and middle rail 2 are gently pushed to reset, the outer rail 3 has a ramp groove 302. Under the influence of gravity, the hook 404 slides out of the limiting groove 405, causing the inner rail 1 to slide back to its original position. Then, under the action of the damping rod 402 and the tension spring 401, the inner rail 1 slowly slides back to its original position. When the inner rail 1 and middle rail 2 are pushed back to their original position with greater force...

[0056] An anti-collision pad 203 is fixedly connected to the bottom wall of the outer rail 3, and the anti-collision pad 203 abuts against the inner rail 1.

[0057] Reference Figure 7 By using the anti-collision pad 203 set on the bottom wall of the outer rail 3, when the inner rail 1 slides back to its original position, it can effectively buffer the contact with the outer rail 3, reduce the impact noise of pulling the inner rail 1 and the outer rail 3, and thus achieve the effect of silent closing.

[0058] Example 2:

[0059] Reference Figure 9 A heavy-duty slide rail, which is basically the same as in Example 1, but further, the inner rail 1 is provided with an adjusting screw 101;

[0060] When installing and using the cabinet, the top or bottom of the cabinet door may not fit properly against the cabinet during the closing process. In this case, the staff can manually turn the adjusting screw 101 to adjust the position of the door panel so that it fits the cabinet vertically.

[0061] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A heavy-duty slide rail, characterized in that, include: outer rail (3); The middle rail (2) is slidably connected to the outer rail (3), and the middle rail (2) is connected to the side wall by bearings with a first plastic roller (201), a second plastic roller (202), a third plastic roller (204), a fourth plastic roller (205) and a fifth plastic roller (206); The third plastic roller (204) and the fourth plastic roller (205) are both in contact with the inner wall of the outer rail (3); The inner rail (1) is slidably connected to the middle rail (2), and a damping part is fixedly connected to the bottom of the inner rail (1); Both the first plastic roller (201) and the fifth plastic roller (206) are in contact with the inner rail (1); A paddle plastic sleeve (301) is fixedly connected to the outer rail (3), and the damping part is connected to the paddle plastic sleeve (301).

2. The heavy-duty slide rail according to claim 1, characterized in that, The damping part includes a main body (4), a connecting plate (403), a sliding hook and a damping rod (402). The sliding hook (404) is slidably connected in the limiting groove (405) of the main body (4), and the sliding hook (404) is rotatably connected to the connecting plate (403). The damping rod (402) is fixedly connected in the main body (4), and the driving end of the damping rod (402) is fixedly connected to the connecting plate (403).

3. A heavy-duty slide rail according to claim 2, characterized in that, At least one tension spring (401) is fixedly connected to the connecting plate (403), and the end of the tension spring (401) away from the connecting plate (403) is fixedly connected to the main body (4).

4. A heavy-duty slide rail according to claim 2, characterized in that, A limiting card (4041) is connected to the sliding hook (404), and the limiting card (4041) is connected to the plastic sleeve (301) of the paddle.

5. A heavy-duty slide rail according to claim 2, characterized in that, The bottom wall of the outer rail (3) is provided with a ramp groove (302), which is matched with the second plastic roller (202) and the third plastic roller (204).

6. A heavy-duty slide rail according to claim 2, characterized in that, An anti-collision pad (203) is fixedly connected to the bottom wall of the outer rail (3), and the anti-collision pad (203) abuts against the inner rail (1).

7. A heavy-duty slide rail according to claim 2, characterized in that, An adjusting screw (101) is connected to the inner rail (1).

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