Three-section synchronous guide rail based on synchronous belt transmission

Abstract

A three-section synchronous guide rail based on synchronous belt transmission comprises an inner rail body, a middle rail body and an outer rail body which are sequentially distributed from inside to outside, an inner ball frame is arranged between the inner rail body and the middle rail body, an outer ball frame is arranged between the middle rail body and the outer rail body, an inner rack is arranged on the inner ball frame, and an outer rack is arranged on the outer ball frame. Correspondingly, an installation groove penetrating through a body of the middle rail is formed in the middle rail, a synchronous belt is installed in the installation groove, the synchronous belt is installed on the synchronous frame to rotate, and synchronous teeth are arranged on the outer contour of the synchronous belt and meshed with the inner rack and the outer rack. The synchronous belt transmission device has the beneficial effects that the synchronous belt is adopted for transmission; the synchronous belt is made of a wear-resistant elastic material and has good flexibility and durability. Compared with a traditional ball or a sliding guide rail, the synchronous belt has certain elastic deformation capacity in the transmission process, so that the synchronous belt is not prone to being stuck, smooth sliding of the drawer can be guaranteed, and the use experience of a user is greatly improved.

Description

Technical Field

[0001] The utility model relates to a hardware guide rail, in particular to a three-section synchronous guide rail based on synchronous belt transmission. Background Art

[0002] With the development of modern furniture design and the improvement of people's requirements for quality of life, various functional furniture has been widely used in daily life. Drawers, as a common and indispensable component of furniture, are widely used in wardrobes, cabinets, desks, bedside tables and other furniture. Drawer guides are key components in the drawer system, and their performance directly affects the drawer experience and the overall quality of the furniture.

[0003] At present, most furniture rails on the market are in the form of two or three sections. Among them, the three-section rail structure is usually composed of a moving rail, a middle rail and a fixed rail that are slidably connected in sequence. In order to ensure the smooth operation of the rail, sliding ball parts are arranged between the moving rail and the middle rail, and between the middle rail and the fixed rail. The drawer slides by rolling the ball in the rail.

[0004] In order to make the drawer pulling process smoother, an additional synchronization structure is usually required in the prior art. For example, in patent CN206314844U, a synchronization gear is provided on the middle rail, and an upper rack and a lower rack are provided on the preset upper ball rack and lower ball rack, respectively, and the synchronization gear is meshed with the upper rack and the lower rack for transmission, thereby achieving synchronous movement between the moving rail and the middle rail.

[0005] Although this synchronization method can achieve synchronous sliding of the drawers, there are also some significant problems: 1. Unsmooth sliding: The existing synchronous gear structure is prone to gear jamming in actual use, causing the entire guide rail to fail to work properly. The meshing of the gear and the rack is prone to wear and jamming under heavy loads or after long-term use, causing the drawer to slide unsmoothly, affecting the user experience.

[0006] 2. Complex structure and manufacturing cost: The synchronous structure of synchronous gears and racks is relatively complex, and the manufacturing precision is high, which increases the production cost. At the same time, the complex structural design also increases the overall weight of the guide rail, which is not conducive to the lightweight design of furniture.

[0007] 3. Difficulty in installation: The synchronous structure in the existing technology is difficult to install, and requires precise alignment of gears and racks on the middle rail, moving rail and fixed rail, which increases the complexity of assembly and maintenance difficulty, and is not conducive to the user's later maintenance and maintenance. Therefore, it is necessary to make further improvements to it. Utility Model Content

[0008] The purpose of the utility model is to overcome the shortcomings of the prior art and provide a three-section synchronous guide rail based on synchronous belt drive which has a simple structure, is easy to use, has high precision, low noise, is easy to maintain and has a high load-bearing capacity.

[0009] The purpose of the utility model is achieved in the following way: a three-section synchronous guide rail based on synchronous belt transmission, which includes an inner rail, a middle rail and an outer rail distributed in sequence from the inside to the outside, an inner bead rack is arranged between the inner rail and the middle rail, an outer bead rack is arranged between the middle rail and the outer rail, an inner rack is arranged on the inner bead rack, and an outer rack is arranged on the outer bead rack. Correspondingly: a mounting groove running through the body of the middle rail is arranged, a synchronous belt is installed in the mounting groove, the synchronous belt is installed on the synchronous rack for rotation, and synchronous teeth are arranged on the outer contour of the synchronous belt to mesh with the inner rack and the outer rack.

[0010] Furthermore, the synchronous frame includes a main frame body, the main frame body is provided with a receiving groove penetrating the upper and lower end surfaces thereof, at least two synchronous wheels are rotatably installed in the receiving groove, and the synchronous belt is sleeved on the synchronous wheel.

[0011] Furthermore: the front and rear ends of the installation groove are provided with axial holes penetrating through the main frame body, a rotating shaft is installed on the synchronous wheel, and the synchronous wheel is rotatably installed in the accommodating groove through the rotating shaft.

[0012] Furthermore, the inner side of the synchronous belt is a smooth surface, the outer circle of the synchronous wheel is a smooth axis, and the synchronous belt is set on the smooth axis of the outer circle of the synchronous belt.

[0013] Furthermore: a guiding inclined surface inclined toward the inner direction of the groove is arranged at the position of the upper groove opening corresponding to the shaft hole.

[0014] Furthermore: elastic buckles are arranged at the left and right ends of the main frame, and limiting baffles protruding from the end faces are arranged on the front and rear end faces.

[0015] Furthermore: a lower support plate is extended downward from one side of the bottom of the main frame body, a lower baffle plate is extended from the side wall of the lower support plate, and the lower baffle plate extends into the guide groove of the inner bead rack.

[0016] The beneficial effects of the utility model are: 1. Simple structure, low production cost and improved market competitiveness.

[0017] 2. The present invention uses a synchronous belt for transmission. The synchronous belt is made of wear-resistant elastic material and has good flexibility and durability. Compared with traditional ball bearings or sliding guides, the synchronous belt has a certain elastic deformation ability during the transmission process, making it less likely to get stuck, ensuring the smooth sliding of the drawer, and greatly improving the user experience.

[0018] 3. The flexibility of the synchronous belt enables it to adapt to various loads and use environments during the transmission process, reducing the risk of failure due to friction and wear. The elasticity of the synchronous belt can also absorb some vibration and impact, further improving the stability and service life of the guide rail system.

[0019] 4. When the synchronous belt of the present invention is working, multiple synchronous teeth on it are meshed with the racks on the inner bead frame and the outer bead frame at the same time. By meshing multiple synchronous teeth with the racks at the same time, the force distribution during transmission is more uniform, which significantly improves the bearing capacity of the guide rail system. Even under high load conditions, the guide rail system can maintain good synchronous sliding performance and is not easily damaged.

[0020] 5. By optimizing the design of the synchronous belt and the rack, the guide rail system of the present invention can achieve high-precision transmission, ensuring the stability and accuracy of the drawer during the sliding process. This high-precision transmission is particularly important for drawer systems that need to be opened and closed frequently, and helps to extend the service life of the guide rail system. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is the general assembly effect diagram of the utility model.

[0022] Figure 2 , 3 This is an assembly drawing of the utility model.

[0023] Figure 4 This is a rendering of the effect of hiding the outer rail, the middle rail and the inner rail in the utility model.

[0024] Figure 5 It is a schematic diagram of the synchronous frame structure in the utility model.

[0025] Figure 6 This is the assembly drawing of the synchronous frame structure in the utility model.

[0026] Explanation of the reference numerals: 1 - inner rail; 2 - middle rail; 21 - mounting groove; 22 - shaft hole; 23 - guide slope; 3 - outer rail; 4 - inner bead rack; 41 - inner rack; 42 - guide groove; 5 - outer bead rack; 51 - outer rack; 6 - synchronous belt; 61 - synchronous gear; 7 - main frame; 71 - accommodating groove; 72 - synchronous wheel; 73 - rotating shaft; 74 - elastic buckle; 75 - limit baffle; 76 - lower support plate; 77 - lower baffle. DETAILED DESCRIPTION

[0027] The utility model is further described in detail below with reference to the accompanying drawings. A three-section synchronous guide rail based on synchronous belt drive, comprising an inner rail 1, a middle rail 2 and an outer rail 3, which are sequentially distributed from the inside to the outside, an inner bead frame 4 is arranged between the inner rail 1 and the middle rail 2, an outer bead frame 5 is arranged between the middle rail 2 and the outer rail 3, an inner rack 41 is arranged on the inner bead frame 4, and an outer rack 51 is arranged on the outer bead frame 5, and correspondingly: the middle rail 2 is provided with a mounting groove 21 that runs through its body, a synchronous belt 6 is installed in the mounting groove 21, the synchronous belt 6 is installed on the synchronous frame for rotation, and a synchronous tooth 61 is arranged on the outer contour of the synchronous belt 6 to mesh with the inner rack 41 and the outer rack 51.

[0028] In one embodiment, the synchronous frame includes a main frame body 7, on which a receiving groove 71 is provided that passes through the upper and lower end surfaces thereof, at least two synchronous wheels 72 are rotatably installed in the receiving groove 71, and the synchronous belt 6 is mounted on the synchronous wheels 72.

[0029] In one embodiment, the installation groove 21 has shaft holes 22 at both ends thereof penetrating through the main frame body 7, a rotating shaft 73 is installed on the synchronous wheel 72, and the synchronous wheel 72 is rotatably installed in the accommodating groove 71 through the rotating shaft 73.

[0030] In one embodiment, the inner side of the synchronous belt 6 is a smooth surface, the outer circle of the synchronous wheel 72 is an optical axis, and the synchronous belt 6 is mounted on the optical axis of the outer circle of the synchronous belt 6.

[0031] In one embodiment, a guiding inclined surface 23 inclined toward the inner direction of the groove is provided at the position of the upper groove opening of the installation groove 21 corresponding to the shaft hole 22 .

[0032] In one embodiment, the main frame body 7 is provided with elastic buckles 74 at both ends, and limit baffles 75 protruding from the end faces are provided at the front and rear end faces.

[0033] In one embodiment, a lower support plate 76 is extended downward from one side of the bottom of the main frame body 7 , a lower baffle plate 77 is extended from the side wall of the lower support plate 76 , and the lower baffle plate 77 extends into the guide groove 42 of the inner bead frame 4 .

[0034] Working principle: The three-section synchronous guide rail of the present invention comprises an inner rail 1, a middle rail 2 and an outer rail 3, wherein an inner bead frame 4 is arranged between the inner rail 1 and the middle rail 2, and an outer bead frame 5 is arranged between the middle rail 2 and the outer rail 3. Balls or needles are installed on the inner and outer main frames to support the two adjacent rails for sliding motion.

[0035] The inner bead rack 4 is provided with an inner rack 41 , and the outer bead rack 5 is provided with an outer rack 51 .

[0036] A mounting groove 21 is provided on the middle rail 2 and penetrates the body thereof. A synchronous belt 6 is installed in the mounting groove 21 . Synchronous teeth 61 are provided on the outer contour of the synchronous belt 6 and mesh with the inner rack 41 and the outer rack 51 .

[0037] When the guide rail is running, the synchronous teeth 61 on the synchronous belt 6 are tightly meshed with the inner rack 41 and the outer rack 51, driving the inner rail 1, the middle rail 2 and the outer rail 3 to move synchronously.

[0038] Among them, since the synchronous belt 6 in this case has good flexibility, it is not easy to get stuck during the transmission process, ensuring the smooth sliding of the drawer. In addition, since the multiple synchronous teeth 61 on the synchronous belt 6 are meshed with the inner rack 41 and the outer rack 51 at the same time, uniform force is achieved, and the bearing capacity of the guide rail system is improved. In addition, the multi-tooth meshing design also ensures high-precision transmission, reduces the error during the drawer sliding process, and ensures the stability and accuracy of the drawer.

[0039] When the user pulls or pushes the drawer during use, the synchronous belt 6 drives the inner rail 1, the middle rail 2 and the outer rail 3 to slide synchronously under the action of the synchronous wheel 72. Since the inner bead frame 4 and the outer bead frame 5 are respectively provided with an inner rack 41 and an outer rack 51, the synchronous teeth 61 on the synchronous belt 6 mesh with them, realizing the synchronous sliding of the drawer, ensuring that the drawer remains stable during the entire sliding process without jamming or offset.

[0040] In summary, the three-section synchronous guide rail based on synchronous belt drive of the present invention realizes high-precision, high-load-bearing synchronous sliding through the multi-tooth meshing design of the synchronous belt 6 and the inner rack 41 and the outer rack 51. The guide rail system not only ensures the smooth sliding and stability of the drawer, but also simplifies the installation and maintenance process, and has significant technical advantages and application value.

[0041] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the claims created by the present invention.

Claims

1. A three-section synchronous guide rail based on synchronous belt drive, comprising an inner rail (1), a middle rail (2) and an outer rail (3) which are arranged in sequence from the inside to the outside, an inner bead frame (4) is arranged between the inner rail (1) and the middle rail (2), and an outer bead frame (5) is arranged between the middle rail (2) and the outer rail (3), characterized in that: The inner bead frame (4) is provided with an inner rack (41), and the outer bead frame (5) is provided with an outer rack (51). Correspondingly, the middle rail (2) is provided with a mounting groove (21) penetrating the body thereof, a synchronous belt (6) is installed in the mounting groove (21), the synchronous belt (6) is installed on the synchronous frame for rotation, and a synchronous tooth (61) is provided on the outer contour of the synchronous belt (6) for meshing with the inner rack (41) and the outer rack (51).

2. A three-section synchronous guide rail based on synchronous belt drive according to claim 1, characterized in that: The synchronous frame comprises a main frame body (7), the main frame body (7) is provided with a receiving groove (71) penetrating the upper and lower end surfaces thereof, at least two synchronous wheels (72) are rotatably mounted in the receiving groove (71), and the synchronous belt (6) is sleeved on the synchronous wheels (72).

3. The three-section synchronous guide rail based on synchronous belt drive according to claim 2 is characterized in that: The mounting groove (21) is provided with shaft holes (22) at the front and rear ends thereof penetrating the main frame (7), a rotating shaft (73) is installed on the synchronous wheel (72), and the synchronous wheel (72) is rotatably mounted in the accommodating groove (71) via the rotating shaft (73).

4. A three-section synchronous guide rail based on synchronous belt drive according to claim 2 or 3, characterized in that: The inner side of the synchronous belt (6) is a smooth surface, the outer circle of the synchronous wheel (72) is a smooth axis, and the synchronous belt (6) is sleeved on the smooth axis of the outer circle of the synchronous belt (6).

5. The three-section synchronous guide rail based on synchronous belt drive according to claim 3 is characterized in that: A guiding inclined surface (23) inclined toward the inside of the groove is provided at the position of the upper groove opening of the installation groove (21) corresponding to the shaft hole (22).

6. The three-section synchronous guide rail based on synchronous belt drive according to claim 3 is characterized in that: The left and right ends of the main frame (7) are provided with elastic buckles (74), and the front and rear end surfaces thereof are provided with limit baffles (75) protruding from the end surfaces thereof.

7. The three-section synchronous guide rail based on synchronous belt drive according to claim 3 is characterized in that: A lower support plate (76) extends downward from one side of the bottom of the main frame (7), a lower baffle plate (77) extends from the side wall of the lower support plate (76), and the lower baffle plate (77) extends into the guide groove (42) of the inner bead frame (4).

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