Mute retainer and linear guide rail
By designing flexible guide wings and flexible spacers, the noise problem of ball linear guides during operation is solved, achieving quiet operation and stable movement, while enhancing the rigidity and load-bearing capacity of the guide rails.
Patent Information
- Application Number
- CN202520246363.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-17
- Publication Date
- 2025-12-30
- Estimated Expiration
- 2035-02-17
AI Technical Summary
Currently, ball linear guides generate significant noise during operation.
The design employs flexible guide wing and flexible spacer block, and uses arc groove and pocket structure to separate and limit the rolling elements, avoiding collision and friction, and achieves stable cyclic motion of the rolling elements through flexible design.
It effectively reduces the operating noise of the linear guide, ensures stable movement and high-precision positioning of the guide, and improves the rigidity and load-bearing capacity of the guide.
Smart Images
Figure CN223739879U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to linear guide rail technical field, especially a mute holder and linear guide rail. BACKGROUND
[0002] Linear slider, also called linear rail, slide rail, linear guide rail, linear slide rail, is a kind of linear motion guiding device, it mainly can be divided into three kinds of roller linear guide rail, cylindrical linear guide rail, ball linear guide rail.Because ball linear guide rail has the advantages such as high positioning accuracy, low friction coefficient, it is widely used in various industrial equipment, machine tool etc.
[0003] But in the movement process of linear guide rail, collision and friction between rolling body, this can cause linear guide rail to produce larger noise in the working process, so current linear guide rail has the technical problem of larger running noise. UTILITY MODEL CONTENTS
[0004] The utility model discloses a mute holder and linear guide rail, aiming at solving the technical problem of larger running noise of current ball linear guide rail.
[0005] To achieve the above-mentioned purpose, the mute holder provided by the utility model comprises:
[0006] Flexible guide rail wing, which is provided with an arc-shaped groove, the flexible guide rail wing is provided with two, and the arc-shaped grooves of the two flexible guide rail wings are oppositely arranged;
[0007] Flexible spacer block, the two sides of the flexible spacer block are connected with the two flexible guide rail wings respectively, and the adjacent two flexible spacer blocks form a pocket to accommodate the rolling body.
[0008] Optionally, in an embodiment of the utility model, the gap between the rolling body and the flexible spacer block on its two sides is a, b respectively, and the gap between the rolling body and the flexible spacer block on its two sides satisfies:
[0009] a≤0.03mm while b≤0.03mm, and / or,
[0010] a+b≤0.05mm.
[0011] Optionally, in an embodiment of the utility model, the rolling body is a spherical rolling body, and the end face of the flexible spacer block in contact with the rolling body is a spherical concave surface.
[0012] Optionally, in an embodiment of the utility model, the spherical concave surface is smoothly connected with the arc-shaped groove, and the spherical concave surface and the arc-shaped groove form a circle.
[0013] Optionally, in one embodiment of the present invention, one side of the flexible spacer block has an avoidance end face.
[0014] Optionally, in one embodiment of the present invention, there is a spacer plane between two adjacent arc-shaped grooves, the length of the spacer plane is l, the edge thickness of the flexible spacer block is t, t=l, and the flexible spacer block is connected to the spacer plane.
[0015] Optionally, in one embodiment of the present invention, the flexible guide wing and the flexible spacer block are integrally injection molded.
[0016] To achieve the above objectives, this utility model also proposes a linear guide rail, comprising:
[0017] slide rail;
[0018] A slider, wherein the slider has a circulation channel and a slide groove, the circulation channel is connected to the slide groove, the circulation channel is used for the circulation of balls, and the slide rail extends into the slide groove;
[0019] A retainer, which is a silent retainer as described above, is formed in a ring shape within the circulation channel, and the ball bearings are located within pockets of the retainer.
[0020] Optionally, in one embodiment of the present invention, four sets of balls are included, with two sets of balls symmetrically arranged on both sides of the slide rail, and the balls are arranged at a predetermined angle.
[0021] Optionally, in one embodiment of the present invention, the slider has an oil passage that connects the circulation channel and the slide groove, and a gasket is provided at the bottom of the slider to seal the gap between the slide rail and the slider.
[0022] Compared with existing technologies, this utility model achieves at least the following beneficial effects. This utility model proposes a silent retainer comprising a flexible guide wing and a flexible spacer block. This retainer is applied to linear guides to separate the rolling elements within the linear guide, preventing collisions and friction during operation and solving the technical problem of high operating noise in current linear guides. The arc-shaped groove and the flexible spacer block form pockets to accommodate the rolling elements, limiting their movement and ensuring that each rolling element moves at predetermined intervals, guaranteeing stable movement of the linear guide. The flexible guide wing can also be inserted into the limiting groove of the linear guide as a limiting component, ensuring that the retainer can operate along a predetermined path. Furthermore, because both the guide wing and the spacer block are flexible, the retainer can be bent to form a ring shape with its ends in contact, satisfying the cyclical operation of the rolling elements in the linear guide. Attached Figure Description
[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings described below only constitute some of the embodiments of the present application, and for those skilled in the art, other drawings can also be obtained according to the structures shown in the drawings without creative labor.
[0024] Figure 1 It is a perspective view of the mute holder of the present application.
[0025] Figure 2 It is a front view of the mute holder of the present application.
[0026] Figure 3 It is a top view of the mute holder of the present application.
[0027] Figure 4 It is a structural schematic view of the slider in the linear guide rail.
[0028] Explanation of reference numerals:
[0029] 100, flexible guide rail wing; 110, arc-shaped groove; 200, flexible spacing block; 210, spherical concave surface; 220, avoiding end surface; 300, pocket hole; 400, slider; 410, circulating channel; 420, sliding groove; 430, oil channel; 440, gasket.
[0030] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION
[0031] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments only constitute some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.
[0032] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directional indications also change accordingly.
[0033] In the utility model, unless another definite provision and limitation, the terms "connect", "fix" and the like should be understood broadly, for example, "fix" can be fixed connection, also can be detachable connection, or be integrated, can be mechanical connection, also can be electrical connection, can be direct connection, also can be indirectly connected through intermediate medium, can be the communication or the interaction of two elements inside two elements, unless another definite limitation. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to specific circumstances.
[0034] In addition, if the embodiment of the utility model involves "first", "second" and the like description, the "first", "second" and the like description is only for the purpose of description, and can not be understood as indicating or suggesting its relative importance or implicitly indicating the number of indicated technical features. Therefore, the features with "first", "second" can explicitly or implicitly include at least one feature. In addition, the meaning of "and / or" appearing throughout the text includes three parallel schemes, for example, "A and / or B" includes A scheme, or B scheme, or A and B simultaneously satisfy the scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on that ordinary skilled in the art can realize, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, also not within the protection scope required by the utility model.
[0035] Referring to Figures 1-3 The utility model proposes a mute holder, including:
[0036] Flexible guide rail wing 100, open arc slot 110, flexible guide rail wing 100 is provided with two, two flexible guide rail wing 100 arc slot 110 is opposite arrangement;
[0037] Flexible spacer block 200, the two sides of flexible spacer block 200 are connected two flexible guide rail wings 100, and the adjacent two flexible spacer blocks 200 form a pocket 300 to accommodate the rolling element.
[0038] The application discloses a mute holder which comprises flexible guide rail wings 100 and flexible interval blocks 200, and is applied to a linear guide rail to separate rolling bodies in the linear guide rail, avoid collision and friction of the rolling bodies during work, and solve the technical problem of large work noise of the linear guide rail. The arc-shaped grooves 110 and the flexible interval blocks 200 form pockets 300 for accommodating the rolling bodies, the rolling bodies are limited, the rolling bodies move at a predetermined interval, and stable movement of the linear guide rail is ensured. The flexible guide rail wings 100 can also be inserted into limiting grooves in the linear guide rail as limiting components, so that the holder can run along a predetermined path. In addition, since the guide rail wings and the interval blocks are flexible, the holder can be bent to contact the head and the tail to form a ring, and the circulation of the rolling bodies in the linear guide rail is met.
[0039] Since the holder is in a bent state during work, the pockets 300 will have a tendency of expansion deformation when being bent, and the deformation amount of the pockets 300 is the largest when the holder is located at a vertex of a curved surface. In order to avoid the limiting effect of the pockets 300 on the rolling bodies being poor after deformation, causing the rolling bodies to be separated from the holder, the size of the pockets 300 is limited. After the rolling bodies are installed into the pockets 300, there are gaps between the rolling bodies and the flexible interval blocks 200 on the left and right sides. The gap sizes between the rolling bodies and the flexible interval blocks 200 on the left and right sides are defined as a and b respectively, and the gap sizes need to satisfy a and b simultaneously ≤0.03mm, or a+b ≤0.05mm, or both of the above two size requirements. Controlling the gap sizes between the rolling bodies and the flexible interval blocks 200 within the above range can avoid the problem that the rolling bodies may be separated from the holder when the holder moves to the vertex of the curved surface.
[0040] Preferably, the holder is applied to a ball linear guide rail, that is, the rolling bodies are spherical rolling bodies. In order to improve the fitting degree of the flexible interval blocks 200 to the balls, the two sides of the flexible interval blocks 200 are spherical concaves 210, so as to improve the wrapping property of the pockets 300 to the balls.
[0041] Further, the curve of the spherical concave 210 and the curve of the arc-shaped groove 110 enclose a circle, so as to better fit the balls. In order to reduce the friction between the pockets 300 and the balls, the spherical concave 210 and the arc-shaped groove 110 are smoothly connected.
[0042] After the arc-shaped grooves 110 are formed in the flexible guide rail wings 100, interval planes are formed between the adjacent two arc-shaped grooves 110, the length of the interval plane is l, the edge thickness of the flexible interval block 200 is t, and l=t. The design makes the shape of the pocket 300 regular, and ensures the wrapping property of the pocket 300 to the ball.
[0043] Further, the retainer can be integrally formed by an injection molding machine. After the integrally formed retainer is trimmed to remove burrs, a retainer blank is obtained, and after fine trimming, the final product is obtained, which has high production efficiency. In addition, the integrally formed retainer does not have connecting gaps between structures, and the connecting part is not prone to breakage during use.
[0044] Referring to Figure 4 To achieve the above object, a linear guide rail is also provided, which comprises:
[0045] A sliding rail;
[0046] A sliding block 400, which is provided with a circulation channel 410 and a sliding groove 420, the circulation channel 410 is connected to the sliding groove 420, the circulation channel 410 is used for the circulation of the balls, and the sliding rail extends into the sliding groove 420;
[0047] A retainer, which is a mute retainer as described above, and the retainer is enclosed to form a ring in the circulation channel 410, and the balls are located in the pockets 300 of the retainer.
[0048] In the linear guide rail, the balls and the retainer form a movement unit of the sliding block 400, which assists the sliding block 400 to slide quickly on the sliding rail. During operation of the linear guide rail, the balls will circulate in the circulation channel 410 and the gap between the sliding rail and the sliding block 400. The circulation channel 410 is provided with a limiting groove, and the flexible guide rail wing 100 extends into the limiting groove to limit the movement path of the retainer.
[0049] Since the retainer needs to be bent, the flexible spacer block 200 will come into contact with the side wall of the circulation channel 410 after bending, which increases the friction between the retainer and the sliding block 400. Therefore, one side of the flexible spacer block 200 has a relief end face 220 to avoid the flexible spacer block 200 from coming into contact with the side wall of the circulation channel 410. In an optional embodiment, the flexible spacer block 200 is shaped like a circular plate cut by a plane.
[0050] Specifically, in the linear guide rail, four groups of balls are provided, two groups of balls are symmetrically arranged on both sides of the sliding rail, and the balls are arranged at a predetermined angle.
[0051] The inclined arrangement of the balls is achieved by arranging the balls in four groups, each group having a height difference between the balls in two directions of movement, thereby forming an inclined arrangement. Specifically, the four groups of balls are arranged at the upper left, lower left, upper right and lower right positions of the slide rail. The arrangement structure enables the guide rail to bear loads from the up-down and left-right directions, thereby enhancing the rigidity and load-carrying capacity of the guide rail. The inclined arrangement of the balls can reduce the contact area and contact angle between the balls and the guide rail, reduce the frictional resistance, and make the movement of the guide rail more stable. In addition, the inclined arrangement of the balls can more effectively absorb and disperse vibrations and impacts during movement, thereby reducing the noise during operation of the linear guide rail.
[0052] Further, the sliding block 400 is also provided with an oil channel 430, which is communicated with the circulation channel 410 and the sliding groove 420. The oil channel 430 on the sliding block 400 is used to add lubricating oil into the circulation channel 410 and the sliding groove 420, so as to ensure that there is sufficient lubricating oil in the linear guide rail for lubrication. In order to avoid leakage of the lubricating oil, the bottom of the sliding block 400 is provided with a gasket 440 to seal the gap between the slide rail and the sliding block 400.
[0053] The above is only an optional embodiment of the present application, and does not limit the patent scope of the present application. Any equivalent structural transformation or direct / indirect application in other related technical fields within the inventive concept of the present application, as described in the specification and drawings, is included in the patent protection scope of the present application.
Claims
1. A silencer holder, characterized in that The utility model relates to a silent sliding rail, which comprises: a flexible rail wing with an arc-shaped slot, two of which are arranged opposite to each other; a flexible spacer block, the two sides of which are connected to the two flexible rail wings respectively, and a pocket is formed between two adjacent flexible spacer blocks to accommodate a rolling body.
2. The mute retainer of claim 1, wherein, The gap between the rolling body and the flexible spacer blocks on its two sides is a and b respectively, and the gap between the rolling body and the flexible spacer blocks on its two sides satisfies: a≤0.03mm and b≤0.03mm, and / or, a+b≤0.05mm.
3. The mute retainer of claim 1, wherein, The rolling body is a spherical rolling body, and the end face of the flexible spacer block in contact with the rolling body is a spherical concave surface.
4. The mute holder of claim 3, wherein The spherical concave surface is smoothly connected to the arc-shaped slot, and the spherical concave surface and the arc-shaped slot enclose a circle.
5. The mute retainer of claim 1, wherein, One side of the flexible spacer block has a clearance end face.
6. The mute retainer of claim 1, wherein, Adjacent two arc-shaped slots have a spacing plane, the length of the spacing plane is l, the edge thickness of the flexible spacer block is t, t=l, and the flexible spacer block is connected to the spacing plane.
7. The mute retainer of claim 1, wherein The flexible rail wing and the flexible spacer block are integrally formed by injection molding.
8. A linear guide rail characterized by comprising: The utility model relates to a silent sliding rail, which comprises: a sliding rail; a sliding block, which is provided with a circulating channel and a sliding groove, the circulating channel is communicated with the sliding groove, the circulating channel is used for circulating movement of a rolling ball, and the sliding rail extends into the sliding groove; a retainer, which is the silent retainer according to any one of claims 1-7, and the retainer encloses a ring in the circulating channel, and the rolling ball is located in the pocket of the retainer.
9. The linear guide rail according to claim 8, wherein The utility model comprises four groups of rolling balls, two groups of rolling balls are symmetrically arranged on the two sides of the sliding rail, and the rolling balls are arranged at a predetermined angle.
10. The linear guide rail according to claim 8, wherein The sliding block is provided with an oil channel, the oil channel is communicated with the circulating channel and the sliding groove, and a gasket is arranged at the bottom of the sliding block to seal the gap between the sliding rail and the sliding block.