Planar guide rail

Abstract

This utility model relates to the field of guide rail manufacturing technology and discloses a planar guide rail. The planar guide rail includes a base, a limiting member, a moving member, and a sliding assembly. The limiting member covers the base, and the two enclose a moving space. The moving member includes a base portion and a protrusion portion. The base portion is parallel and spaced above the base, below the limiting member, and located within the moving space. The limiting member has a sliding window, and the protrusion portion is placed within the sliding window and can move within it. The moving assembly includes a first sliding plate and multiple first balls. The first balls are rotatably mounted within the sliding plate. The base portion is parallel and spaced above the first sliding plate, and the first balls abut against the base portion. The first sliding plate is parallel and spaced above the base, and the first balls abut against the base. The moving member can slide arbitrarily within the range defined by the sliding window, breaking through the limitation of two-dimensional linear ball bearing guide rails that can typically only move linearly in one direction, reducing the cost and space occupation of additional guide rail assemblies for multi-directional movement.

Description

Technical Field

[0001] This utility model relates to the field of guide rail manufacturing technology, and in particular to a planar guide rail. Background Technology

[0002] Planar guideways, as core components for achieving precise movement of parts, are widely used in many fields such as automated equipment, precision machine tools, and electronic manufacturing devices. Two-dimensional linear ball guideways, due to their advantages such as high motion accuracy, low coefficient of friction, and long service life, have become one of the most commonly used guideway types in existing technology. However, the structural design of two-dimensional linear ball guideways is usually centered around linear motion in a single direction. Their moving parts can only slide unidirectionally along a preset fixed trajectory. Moreover, as industrial equipment develops towards multi-functionality and integration, more and more application scenarios are placing higher demands on the motion flexibility of moving parts, making the limitations of existing two-dimensional linear ball guideways increasingly prominent.

[0003] Currently, some planar guideways are constructed by adding multiple sets of guideway components to existing two-dimensional ball bearing guideways. The movement direction is expanded by combining multiple sets of guideways. However, this method of combining multiple sets of guideways not only significantly increases the manufacturing cost of planar guideways, but also occupies more space due to the installation layout of multiple sets of guideways, resulting in a more complex equipment structure. This is not conducive to the miniaturization design of the equipment, and it is also difficult to guarantee the matching accuracy between multiple sets of guideways. The cumulative error between each guideway can easily affect the overall movement accuracy of the moving parts, thereby reducing the working stability and reliability of the equipment.

[0004] Therefore, there is an urgent need for a planar guide rail that can overcome the limitation of linear movement in a single direction of existing planar guide rails, and achieve flexible sliding of moving parts in multiple directions without relying on multiple sets of guide rails. Utility Model Content

[0005] The purpose of this invention is to provide a planar guide rail that can overcome the limitation of linear movement in a single direction of existing planar guide rails, and achieve flexible sliding of moving parts in multiple directions without relying on multiple sets of guide rails.

[0006] Based on the above concept, the technical solution adopted by this utility model is as follows:

[0007] A planar guide rail, comprising:

[0008] Base;

[0009] A limiting member is provided on the base and together with the limiting member, a movable space is formed;

[0010] A movable component includes a base and a protrusion disposed thereon. The base is disposed parallel to and spaced above the base and parallel to and spaced below the limiting component. The base is disposed within the movable space. The limiting component has a sliding window. The protrusion is disposed within the sliding window and is movable within the sliding window.

[0011] A sliding assembly includes a first sliding plate and a plurality of first balls, the plurality of first balls being rotatably mounted inside the first sliding plate, a base being disposed parallel to and spaced above the first sliding plate, the base abutting against the first sliding plate, the first sliding plate being disposed parallel to and spaced above the base, and the first balls abutting against the base.

[0012] As an alternative to the planar guide rail, multiple first balls are arranged in a matrix on the first sliding plate.

[0013] As an alternative to the planar guide rail, the first sliding plate extends upward along its circumferential edge with a first limiting portion, which can limit the movement of the moving member on the first sliding plate in the horizontal direction.

[0014] As an alternative to the planar guide rail, the sliding assembly also includes:

[0015] The second sliding plate has a mounting hole corresponding to the protrusion. The second sliding plate is arranged parallel to the base and sleeved on the outside of the protrusion. The second sliding plate is arranged parallel to the limit member below.

[0016] Multiple second balls are rotatably mounted within the second sliding plate, and each second ball simultaneously abuts against the limiting member and the base.

[0017] As an alternative to the planar guide rail, multiple second balls are arranged in a matrix on the second sliding plate.

[0018] As an alternative to the planar guide rail, the second sliding plate extends downward along its circumferential edge with a second limiting portion, which can limit the movement of the moving member in the horizontal direction on the second sliding plate.

[0019] As an alternative to the planar guide rail, the sliding assembly also includes a first buffer element disposed at the circumferential edge of the mounting hole.

[0020] As an alternative to the planar guide rail, the planar guide rail also includes a second buffer element disposed at the circumferential edge of the sliding window.

[0021] As an alternative to the planar guide rail, the base has a U-shaped structure with the opening facing upwards. Its two side walls extend parallel to each other in the front-back direction, and the two ends of the limiting member are respectively connected to the top of the two side walls of the base. The bottom wall and the two side walls of the base, together with the limiting member, enclose the moving space and limit the range of movement of the moving member in the left-right direction.

[0022] As an optional solution for the planar guide rail, the planar guide rail also includes a horizontal limiting plate, which is disposed on the front end face and rear end face of the base to limit the range of movement of the moving part in the front-back direction, and together with the bottom wall, side walls and the limiting part of the base, it forms the boundary of the moving space.

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

[0024] This utility model proposes a planar guide rail. A limiting member covers a base and forms a movable space with the limiting member. The movable member includes a base and a protrusion disposed thereon. The base is parallel to and spaced above the base, and parallel to and spaced below the limiting member. The base is disposed within the movable space. A sliding window is provided on the limiting member, and the protrusion is disposed within the sliding window, allowing it to move within the sliding window. The sliding assembly includes a first sliding plate and multiple first balls. The multiple first balls are rotatably mounted within the first sliding plate. The base is parallel to and spaced above the first sliding plate, and the base abuts against the first sliding plate. The first sliding plate is parallel to and spaced above the base, and the first balls abut against the base. This design allows the movable member of this application to slide arbitrarily within the range defined by the sliding window. This design overcomes the limitation that two-dimensional linear ball bearing guide rails can usually only achieve linear movement in one direction, making it more suitable for application scenarios with diverse requirements for the degree of freedom of movement of the movable component. It also reduces the cost and space occupation of additional guide rail assemblies required to achieve multi-directional movement. Attached Figure Description

[0025] Figure 1 This is an exploded view of the planar guide rail provided in this embodiment of the utility model;

[0026] Figure 2 This is a schematic diagram of the structure of the limiting member provided in this embodiment of the utility model;

[0027] Figure 3 This is a schematic diagram of the structure of the sliding component provided in an embodiment of the present invention.

[0028] In the picture:

[0029] 1. Base;

[0030] 2. Limiting component; 21. Sliding window;

[0031] 3. Moving parts; 31. Base section; 32. Protrusions;

[0032] 4. Sliding assembly; 41. First sliding plate; 42. First ball bearing; 43. Second sliding plate; 431. Mounting hole; 44. Second ball bearing;

[0033] 5. Horizontal limit plate. Detailed Implementation

[0034] To make the technical problem solved by this utility model, the technical solution adopted, and the technical effect achieved clearer, the technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely for explaining this utility model and not for limiting it. Furthermore, it should be noted that, for ease of description, only the parts related to this utility model are shown in the accompanying drawings, not all of them.

[0035] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0036] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0037] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0038] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0039] This embodiment discloses a planar guide rail, such as Figures 1-2 As shown, in this embodiment, the planar guide rail includes a base 1, a limiting member 2, a moving member 3, and a sliding assembly 4. The limiting member 2 covers the base 1 and forms a moving space with the limiting member 2. The moving member 3 includes a base part 31 and a protrusion 32 disposed thereon. The base part 31 is disposed parallel to and spaced above the base 1 and parallel to and spaced below the limiting member 2. The base part 31 is disposed within the moving space. The limiting member 2 has a sliding window 21. The protrusion 32 is disposed within the sliding window 21 and can move within the sliding window 21. The sliding assembly 4 includes a first sliding plate 41 and a plurality of first balls 42. The plurality of first balls 42 are rotatably mounted within the first sliding plate 41. The base part 31 is disposed parallel to and spaced above the first sliding plate 41 and abuts against the first sliding plate 41. The first sliding plate 41 is disposed parallel to and spaced above the base 1, and the first balls 42 abut against the base 1. This design allows the movable component 3 to slide freely within the range defined by the sliding window 21. This design overcomes the limitation that two-dimensional linear ball bearing guides can only achieve linear movement in one direction, making it more suitable for application scenarios with diverse requirements for the degree of freedom of movement of the movable component. It also reduces the cost and space occupation of adding additional guide rail components to achieve multi-directional movement. At the same time, the limiting component 2 and the base 1 form a moving space, restricting the base part 31 of the movable component 3 within this space. The protrusion 32, together with the sliding window 21 of the limiting component 2, forms a lateral constraint, limiting the horizontal displacement of the movable component 3. The combination of the first sliding plate 41 and multiple first balls 42 in the sliding assembly 4 provides low-friction support through the balls and provides a stable bottom support surface for the movable component 3 through the large-area contact between the first sliding plate 41 and the base part 31, dispersing the heavy load pressure. Combined with the constraint of the limiting component 2, they jointly resist the overturning moment, ensuring that the movable component 3 remains stable under heavy load.

[0040] Preferably, such as Figure 1 As shown, in this embodiment, the multiple first balls 42 are arranged in a matrix on the first sliding plate 41, which allows the first balls 42 to form a uniform and comprehensive support structure on the first sliding plate 41. This ensures that when the base 31 of the moving part 3 abuts against the first sliding plate 41, the pressure can be evenly transmitted to the base 1 through the matrix-distributed balls. At the same time, it ensures that when the moving part 3 slides freely within the range defined by the sliding window 21, the movement in each direction can achieve low-friction motion by relying on the evenly distributed balls, avoiding the impact on the stability of the moving part 3 or the damage to the components caused by excessive local pressure due to uneven ball distribution. In other embodiments, the multiple first balls 42 can also be distributed in a ring or radial pattern.

[0041] Preferably, in this embodiment, the first sliding plate 41 extends upward along its circumferential edge with a first limiting part. The first limiting part can limit the movement of the moving part 3 in the horizontal direction on the first sliding plate 41 and can form a surrounding physical blocking structure on the bottom support layer of the moving part 3. When the moving part 3 tends to come off the edge of the sliding assembly 4 due to accidental impact, heavy load offset or movement trajectory deviation, the first limiting part can directly abut against the edge of the base part 31 of the moving part 3, firmly restricting the displacement boundary of the moving part 3 in the horizontal direction and preventing it from leaving the support range of the first sliding plate 41. This avoids the problem of the overall function failure of the guide rail and equipment shutdown caused by the moving part 3 coming off the sliding assembly 4.

[0042] Specifically, such as Figures 1-3 As shown, in this embodiment, the sliding assembly 4 further includes a second sliding plate 43 and a plurality of second balls 44. The second sliding plate 43 has mounting holes 431 corresponding to the protrusion 32. The second sliding plates 43 are arranged parallel to each other above the base 31 and sleeved on the protrusion 32. The second sliding plates 43 are arranged parallel to each other below the limiting member 2. The plurality of second balls 44 are rolled and installed inside the second sliding plate 43. Each second ball 44 simultaneously abuts against the limiting member 2 and the base 31, thereby forming a double sliding support on the upper and lower sides of the moving member 3, which is composed of the first sliding plate 41 and the first ball 42, and the second sliding plate 43 and the second ball 44, respectively. The support and guide structure further enhances the stability of the moving part 3 during movement. It also disperses the moving part 3 and the heavy load pressure that it may bear through the double low-friction support at the top and bottom, and strengthens the bidirectional constraint on the moving part 3. It effectively avoids the moving part 3 from deviating or shaking in the vertical direction during movement. At the same time, it continues and optimizes the characteristics of breaking through the limitation of single-direction linear movement of two-dimensional linear ball guide rail, so that the moving part 3 slides more smoothly and stably within the range of sliding window 21. It is further adapted to application scenarios with higher requirements for the degree of freedom and stability of the moving parts, and reduces the cost and space occupation of adding other components to improve stability.

[0043] Preferably, such as Figures 1-3As shown, in this embodiment, multiple second balls 44 are arranged in a matrix on the second sliding plate 43. This allows the supporting force and contact points of the second balls 44 on the base 31 and the limiting member 2 to be evenly distributed in the plane, forming a comprehensive and balanced multi-point support structure. This effectively avoids the problem of local force concentration caused by uneven ball distribution, significantly reduces the risk of deformation of the base 31 or the second sliding plate 43 due to local overload, and extends the overall service life of the guide rail. The uniform matrix arrangement makes the guiding force on the moving part 3 more stable during sliding, reducing jamming and shaking caused by force imbalance, further improving the smoothness and positional accuracy of the moving part 3. At the same time, in conjunction with the upper and lower double sliding support structure, the multi-directional movement of the moving part 3 within the range limited by the sliding window 21 is more stable and reliable, making it more suitable for high-precision equipment applications with stringent requirements for motion accuracy and stability. No additional precision compensation components are needed, further controlling the overall cost and space occupation of the equipment. In other embodiments, the multiple second balls 44 can also be distributed in a spiral or grouped manner.

[0044] Preferably, in this embodiment, the second sliding plate 43 extends downward along its circumferential edge with a second limiting part. The second limiting part can limit the movement of the moving part 3 in the horizontal direction on the second sliding plate 43, and can form a surrounding physical blocking structure on the top support layer of the moving part 3. When the moving part 3 tends to come off the edge of the sliding assembly 4 due to accidental impact, heavy load offset or movement trajectory deviation, the second limiting part can directly abut against the edge of the base part 31 of the moving part 3, firmly restricting the displacement boundary of the moving part 3 in the horizontal direction, preventing it from leaving the support range of the first sliding plate 41, thus avoiding the problem of the overall function failure of the guide rail and equipment shutdown caused by the moving part 3 coming off the sliding assembly 4.

[0045] Preferably, in this embodiment, the sliding component 4 further includes a first buffer member. The first buffer member is disposed on the circumferential edge of the mounting hole 431 and can form a flexible contact interface between the protrusion 32 of the moving member 3 and the mounting hole 431 of the second sliding plate 43. When the moving member 3 experiences horizontal displacement, vibration or lateral force due to multi-directional sliding, the elastic deformation of the first buffer member can absorb the impact force between the protrusion 32 and the edge of the mounting hole 431, thus avoiding wear or jamming caused by rigid contact.

[0046] Optionally, in this embodiment, the first cushioning element is made of elastic rubber. In other embodiments, the first cushioning element may also be made of polyurethane foam or an elastic metal sheet structure, etc.

[0047] Preferably, in this embodiment, the planar guide rail further includes a second buffer member. The second buffer member is disposed on the circumferential edge of the sliding window 21. When the protrusion 32 of the moving member 3 moves along the sliding window 21 to the extreme position near the edge of the window, the second buffer member and the protrusion 32 will be contacted and collided to buffer the impact, thereby avoiding a direct and rigid impact between the protrusion 32 and the edge of the sliding window 21 of the limiting member 2. This can effectively reduce the impact force generated when the protrusion 32 collides with the limiting member 2, reduce the wear, deformation and other physical damage caused by the rigid impact, thereby extending the service life of each component of the planar guide rail and reducing maintenance costs.

[0048] Optionally, in this embodiment, the second buffer is made of rubber. In other embodiments, the second buffer may also be made of polyurethane or spring steel, etc.

[0049] Preferably, such as Figure 1 As shown, in this embodiment, the base 1 has a U-shaped structure with the opening facing upwards. Its two side walls extend parallel to each other in the front-back direction, and the two ends of the limiting member 2 are connected to the top of the two side walls of the base 1 respectively. The bottom wall and the two side walls of the base 1, together with the limiting member 2, enclose a moving space and limit the range of movement of the moving member 3 in the left and right directions. This optimizes the enclosure structure of the moving space, making the base part 31 of the moving member 3 more stable in the space. The two side walls of the base 1 also specifically limit the movement of the moving member 3 in the left and right directions. Combined with the constraint of the protrusion 32 by the original sliding window 21, the range of movement of the moving member 3 can be more accurately limited, preventing it from deviating in the horizontal direction. At the same time, the low-friction support of the sliding component 4 can further improve the stability of the moving member 3 under heavy loads, better breaking through the limitation of linear movement in a single direction of the two-dimensional linear ball guide rail. While adapting to multi-degree-of-freedom motion scenarios, it reduces the cost and space occupation of additional guide rail components.

[0050] Preferably, such as Figure 1As shown, in this embodiment, the planar guide rail also includes a horizontal limiting plate 5. The horizontal limiting plate 5 is disposed on the front and rear faces of the base 1 to limit the movement range of the moving part 3 in the front-back direction. At the same time, it forms the boundary of the moving space together with the bottom wall, side walls and limiting part 2 of the base 1, preventing the moving part 3 from detaching from the front and rear ends of the moving space during the sliding process. The horizontal limiting plate 5 fills the limiting gap in the front-back direction, so that the movement of the moving part 3 in the two-dimensional plane is controlled in all directions, completely eliminating the risk of detachment caused by the lack of obstruction in the front-back direction, avoiding damage to the parts due to collision, and further enhancing the sealing and safety of the moving space. The complete boundary keeps the moving part 3 in a stable constraint environment. Combined with the low friction support and heavy load pressure dispersion function of the sliding component 4, it can ensure that the moving part 3 maintains high precision and stability when sliding in multiple directions, and continue to play the advantages of breaking through the single-direction movement limitation of traditional guide rails and adapting to the needs of multiple degrees of freedom of motion. At the same time, there is no need to add additional protective components to prevent the problem of detachment in the front and back, which significantly reduces the equipment maintenance cost and structural complexity and improves the overall space utilization.

[0051] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A planar guide rail, characterized in that, include: Base (1); Limiting member (2), the limiting member (2) is covered on the base (1) and forms a moving space with the limiting member (2); The movable component (3) includes a base part (31) and a protrusion (32) disposed thereon. The base part (31) is disposed parallel to and spaced above the base (1). The base part (31) is disposed parallel to and spaced below the limiting component (2). The base part (31) is disposed within the movable space. The limiting component (2) has a sliding window (21). The protrusion (32) is disposed within the sliding window (21). The protrusion (32) is capable of moving within the sliding window (21). The sliding assembly (4) includes a first sliding plate (41) and a plurality of first balls (42). The plurality of first balls (42) are rotatably mounted in the first sliding plate (41). The base part (31) is arranged parallel to each other above the first sliding plate (41). The base part (31) abuts against the first sliding plate (41). The first sliding plate (41) is arranged parallel to each other above the base (1). The first balls (42) abut against the base (1).

2. The planar guide rail according to claim 1, characterized in that, Multiple first balls (42) are arranged in a matrix on the first sliding plate (41).

3. The planar guide rail according to claim 1, characterized in that, The first sliding plate (41) has a first limiting part extending upward along its circumferential edge. The first limiting part can limit the movement of the moving member (3) in the horizontal direction on the first sliding plate (41).

4. The planar guide rail according to any one of claims 1-3, characterized in that, The sliding component (4) further includes: The second sliding plate (43) has a mounting hole (431) corresponding to the protrusion (32). The second sliding plate (43) is arranged parallel to the base (31) above and sleeved on the protrusion (32). The second sliding plate (43) is arranged parallel to the limit member (2) below. Multiple second balls (44) are rolled within the second sliding plate (43), and each second ball (44) simultaneously abuts against the limiting member (2) and the base (31).

5. The planar guide rail according to claim 4, characterized in that, Multiple second balls (44) are arranged in a matrix on the second sliding plate (43).

6. The planar guide rail according to claim 4, characterized in that, The second sliding plate (43) has a second limiting part extending downward along its circumferential edge. The second limiting part can limit the movement of the moving member (3) in the horizontal direction on the second sliding plate (43).

7. The planar guide rail according to claim 4, characterized in that, The sliding assembly (4) further includes a first buffer member disposed at the circumferential edge of the mounting hole (431).

8. The planar guide rail according to any one of claims 1-3, characterized in that, The planar guide rail also includes a second buffer, which is disposed at the circumferential edge of the sliding window (21).

9. The planar guide rail according to any one of claims 1-3, characterized in that, The base (1) is a U-shaped structure with the opening facing upwards. Its two side walls extend parallel to each other in the front-back direction. The two ends of the limiting member (2) are respectively connected to the top of the two side walls of the base (1) so that the bottom wall and the two side walls of the base (1) work together with the limiting member (2) to form the moving space and limit the range of movement of the moving member (3) in the left-right direction.

10. The planar guide rail according to claim 9, characterized in that, The planar guide rail also includes a horizontal limiting plate (5), which is disposed on the front end face and rear end face of the base (1) to limit the movement range of the moving part (3) in the front-back direction, and together with the bottom wall, side walls and limiting part (2) of the base (1) to form the boundary of the moving space.

Images