Linear motion guide unit
By adopting a combined structure of guide rail, sliding member, cover member and connecting member in the direct-moving guide unit, the zipper mechanism is used to ensure smooth movement and dust resistance of the sliding member, and the smoothness and dust resistance of the sliding member in the prior art are solved. The difficult-to-achieve problem has achieved efficient dust and waterproofing effects and load resistance.
Patent Information
- Application Number
- CN202380040690.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2022-06-17
- Filing Date
- 2023-05-11
- Publication Date
- 2024-12-27
AI Technical Summary
In the direct-moving guide unit, in order to improve dust resistance and water resistance, it is necessary to avoid exposure of guide rails and sliding members to ensure smooth movement of sliding members, but the prior art is difficult to effectively achieve this goal.
A direct-moving guide unit is designed, adopting a combined structure of a guide rail, a sliding member, a cover member and a connecting member. Through the engagement and separation mechanism of the first zipper and the second zipper, it ensures that the sliding member maintains the cover member covering state when the sliding member moves in a straight line. , reduce the possibility of foreign matter entering the guide rail, improve the dust resistance and waterproofness of the sliding member, and distribute the load through the support member to enhance the load resistance.
The smooth movement of the sliding member is achieved, dust resistance and water resistance are improved, the possibility of foreign objects being attached to the guide rail is reduced, the smooth sliding of the sliding member is ensured, and the load resistance is improved.
Smart Images
Figure CN119213230A_ABST
Abstract
Description
Technical Field
[0001] The present disclosure relates to a linear guide unit. This application claims priority based on Japanese Application No. 2022-97975 filed on June 17, 2022, and all the contents described in the above Japanese Application are incorporated herein by reference. Background Art
[0002] A dustproof guide device is known, in which a part of a movable body protrudes to the outside through an opening formed by an outer cover, and the movable body operates along the opening (see, for example, Patent Document 1). According to the dustproof guide device disclosed in Patent Document 1, a plurality of sealing members each formed in a strip shape and having flexibility are arranged along the edge of the opening, and the top ends of the sealing members are overlapped.
[0003] Prior art literature
[0004] Patent Literature
[0005] Patent Document 1: Japanese Patent Application Publication No. 2000-230618 Summary of the invention
[0006] Problems to be solved by the invention
[0007] In order to improve dustproofness and waterproofness, a cover member is sometimes provided on the guide rail and the sliding member to avoid exposure of the guide rail and the sliding member as much as possible. In a linear guide unit provided with such a cover member, smooth movement of the sliding member is required.
[0008] Therefore, one of the objects of the present invention is to provide a linear motion guide unit capable of ensuring smooth movement of a sliding member.
[0009] Technical means of solving problems
[0010] The direct-acting guide unit disclosed in the present invention comprises: a guide rail, including a guide rail upper surface and a guide rail side surface respectively extending in the long side direction, and a first track surface is provided on the guide rail side surface; a sliding member, which can be installed on the guide rail so as to be relatively movably, and includes a sliding member lower surface opposite to the guide rail upper surface and a second track surface opposite to the first track surface; a plurality of rolling bodies, rolling on a track path formed by the first track surface and the second track surface; a cover member, including a first fastener extending in the long side direction, covering the guide rail and the sliding member; a movable member, which is arranged on the outside of the cover member and moves together with the sliding member; and a connecting member, which connects the sliding member and the movable member. The first fastener includes: a first right element extending in the long side direction; a first left element extending in the long side direction along the first right element and capable of engaging with the first right element; a first front sliding member installed on the first right element and the first left element, fixed to the sliding member and the moving member; and a first rear sliding member installed on the first right element and the first left element, located at a position separated from the first front sliding member in the long side direction, and fixed to the sliding member and the moving member. When the sliding member and the moving member move, the first front sliding member and the first rear sliding member separate the first right element and the first left element from each other as they move in the direction opposite to the side where the other party is located, and engage the first right element and the first left element with each other as they move in the direction where the other party is located. The connecting member includes a first supporting member, which is arranged between the first front sliding member and the first rear sliding member in the long side direction and supports the moving member. In the direction perpendicular to the long side direction and when viewed from the upper surface side of the guide rail, the first opening area generated when the first right element and the first left element are separated from each other is arranged at a position avoiding the guide rail.
[0011] Effects of the Invention
[0012] According to the above-described linear motion guide unit, smooth movement of the sliding member can be ensured. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a schematic perspective view showing the linear guide unit in Embodiment 1 of the present disclosure.
[0014] Figure 2 yes Figure 1 A schematic top view of the linear guide unit shown.
[0015] Figure 3 yes Figure 1 A schematic bottom view of the linear guide unit shown.
[0016] Figure 4 yes Figure 1 A schematic front view of the linear guide unit shown.
[0017] Figure 5 is Figure 1 A schematic cross-sectional view when cut at the section indicated by VV in FIG.
[0018] Figure 6 is Figure 1 The illustrated linear motion guide unit is a schematic perspective view in which a portion of a cover member described later is omitted.
[0019] Figure 7 yes Figure 6 A schematic front view of the linear guide unit shown.
[0020] Figure 8 is Figure 1 The illustrated linear motion guide unit is a schematic perspective view in which a moving member described later is omitted from the illustration.
[0021] Fig. 9 is Figure 1 The illustrated linear motion guide unit is a schematic perspective view in which a portion of a moving member and a cover member are omitted from illustration.
[0022] Fig.10 This is a schematic perspective view of a linear guide unit in Embodiment 2 of the present disclosure.
[0023] Fig.11 This is a schematic perspective view showing a part of a linear motion guide unit in Embodiment 3 of the present disclosure.
[0024] Fig.12 This is a schematic perspective view of a linear guide unit in Embodiment 4 of the present disclosure. DETAILED DESCRIPTION
[0025] [Overview of Embodiments]
[0026] The direct-acting guide unit disclosed in the present invention comprises: a guide rail, comprising a guide rail upper surface and a guide rail side surface respectively extending in the longitudinal direction, and a first track surface is arranged on the guide rail side surface; a sliding member, which is relatively movably mounted on the guide rail, comprising a sliding member lower surface opposite to the guide rail upper surface and a second track surface opposite to the first track surface; a plurality of rolling bodies, which roll on a track path formed by the first track surface and the second track surface; a cover member, comprising a first zipper extending in the longitudinal direction, covering the guide rail and the sliding member; a moving member, which is arranged outside the cover member and moves together with the sliding member; and a connecting member, which connects the sliding member and the moving member. The first zipper comprises: a first right side element extending in the longitudinal direction; a first left side element extending in the longitudinal direction along the first right side element and capable of meshing with the first right side element; a first front side sliding member, which is mounted on the first right side element and the first left side element, and is fixed to the sliding member and the moving member; and a first rear side sliding member, which is mounted on the first right side element and the first left side element, is located at a position separated from the first front side sliding member in the longitudinal direction, and is fixed to the sliding member and the moving member. When the sliding member and the moving member move, the first front sliding member and the first rear sliding member move in the opposite direction to the other side so that the first right element and the first left element are separated from each other, and the first right element and the first left element are meshed with each other as they move in the direction to the other side. The connecting member includes a first supporting member, which is arranged between the first front sliding member and the first rear sliding member in the long side direction and supports the moving member. When viewed from the upper surface side of the guide rail in a direction perpendicular to the long side direction, a first opening area generated when the first right element and the first left element are separated from each other is arranged at a position away from the guide rail.
[0027] According to the direct-acting guide unit disclosed in the present invention, the guide rail and the sliding member are covered by the cover member. Moreover, when the sliding member is in motion, that is, when the sliding member performs linear reciprocating motion, the first right element and the first left element included in the first zipper are separated and engaged, so that the guide rail and the sliding member can be kept covered by the cover member while the sliding member is slid. Therefore, the dustproofness and waterproofness of the sliding member during sliding can be improved. Here, in the direction perpendicular to the long side direction and when observed from the upper surface side of the guide rail, the opening area generated when the first right element and the first left element are separated from each other is arranged at a position avoiding the guide rail, so that foreign matter such as dust on the cover member enters the inside of the cover member when the first right element and the first left element are separated, and the possibility of foreign matter reaching the guide rail can also be reduced. In this way, the possibility of foreign matter adhering to the first track surface can be reduced, and on the track road composed of the first track surface and the second track surface, it can be avoided that the smooth sliding of the sliding member is hindered by foreign matter. Therefore, according to such a direct-acting guide unit, the smooth movement of the sliding member can be ensured. Here, the fastener refers to a fastener having a plurality of teeth (fastener elements) attached along the longitudinal direction on both sides in the width direction (direction perpendicular to the longitudinal direction) of a cut portion (opening region) extending along the longitudinal direction.
[0028] In the above-mentioned linear guide unit, the cover member may also include a second zipper extending in the longitudinal direction and arranged in parallel with the first zipper. The second zipper may also include: a second right element extending in the longitudinal direction and arranged adjacent to the first left element; a second left element extending in the longitudinal direction along the second right element and capable of engaging with the second right element; a second front side slide member mounted on the second right element and the second left element and fixed to the sliding member and the moving member; and a second rear side slide member mounted on the second right element and the second left element, located at a position separated from the second front side slide member in the longitudinal direction, and fixed to the sliding member and the moving member. When the sliding member and the moving member move, the second front side slide member and the second rear side slide member may also separate the second right side element and the second left side element from each other as they move in the direction opposite to the side where the other party is located, and engage the second right side element and the second left side element with each other as they move in the direction where the other party is located. The connecting member may also include a second supporting member, which is arranged between the second front side slide member and the second rear side slide member in the longitudinal direction and supports the moving member. When viewed from the upper surface side of the guide rail in a direction perpendicular to the long side direction, the second opening area generated when the second right element and the second left element are separated from each other can also be arranged at a position away from the guide rail. In this way, the second opening area is arranged at a position away from the guide rail, so even if foreign matter enters from the second opening area, the possibility of foreign matter adhering to the first track surface can be reduced, and the smooth movement of the sliding member can be ensured. In addition, since the movable member can be supported by both the first supporting member and the second supporting member, the load applied to the movable member can be borne in a dispersed manner. Therefore, the load resistance can be improved.
[0029] In the direct-acting guide unit, the area between the first left element and the second right element may also be formed of an elastic body. In this way, the deflection or bulging of the area between the first left element and the second right element during the separation and engagement of the sliding member can be suppressed, and the possibility of interference between the cover member and the guide rail and the sliding member can be reduced.
[0030] In the above-mentioned linear guide unit, the cover member may include a belt member disposed at a position opposite to the upper surface of the guide rail. A first left element may be disposed at one end of the belt member in a direction perpendicular to the long side direction, i.e., in the width direction, and a second right element may be disposed at the other end of the belt member in the width direction. In this way, the possibility of positional deviation of the first left element and the second right element in the long side direction can be reduced, and bending of the belt member can be suppressed.
[0031] The linear guide unit may further include a shielding member, which is mounted on the side surface of the guide rail and is disposed between the side surface of the guide rail and the first opening area of the first zipper in a direction perpendicular to the long side direction and when viewed from the upper surface of the guide rail. In this way, the shielding member can reduce the possibility of foreign matter intruding from the side surface of the guide rail in the area not covered by the cover member. Therefore, the smooth movement of the sliding member can be further ensured.
[0032] In the above-mentioned linear guide unit, at least a portion of the cover member may also include a structure formed by laminating a plurality of resin materials having different strengths. By adopting such a structure, it is possible to ensure appropriate flexibility and maintain high strength in at least a portion of the cover member. Therefore, it is possible to suppress shape deformation in at least a portion of the cover member and reduce the possibility of interference with the sliding member.
[0033] In the linear guide unit, at least a portion of the cover member is configured so that the inside can be visually checked from the outside. This makes it easy to understand the state of the inside of the cover member, and improves the maintainability.
[0034] In the above-mentioned direct-acting guide unit, a sealing member may be provided on at least one of the first front sliding member and the first rear sliding member, and the sealing member cleans the upper part of the area where the first right element and the first left element are engaged. In this way, the possibility of foreign matter accumulated on the upper part of the cover member entering the inside of the cover member can be reduced by using the sealing member. Therefore, the possibility of foreign matter entering the track can be reduced, and the smooth movement of the sliding member can be further ensured.
[0035] In the above-mentioned direct-acting guide unit, the cover member may also include: an upper wall portion, provided with a first zipper; and a side wall portion, connected to the upper wall portion and extending in a direction intersecting the upper wall portion. The portion where the upper wall portion and the side wall portion are connected may also be composed of a curved surface. In this way, the cover member itself can be easily deformed, and the possibility of the cover member bending and bulging when the first zipper is opened can be reduced. Therefore, the possibility of interference between the sliding member and the cover member can be reduced, and the smooth movement of the sliding member can be further ensured.
[0036] In the above-mentioned linear guide unit, at least one of the right element and the left element may include an oil-containing resin provided at a portion meshing with each other. In this way, the oil component seeping out from the oil-containing resin when the right element and the left element mesh and separate can promote smooth movement of the right element and the left element, and can ensure smooth movement of the sliding member.
[0037] [Specific example of embodiment]
[0038] Next, an example of a specific embodiment of the linear guide unit disclosed in the present disclosure will be described with reference to the drawings. In the following drawings, the same or corresponding parts are denoted by the same reference numerals, and their description will not be repeated.
[0039] (Implementation Method 1)
[0040] First, Embodiment 1 which is an embodiment of the present disclosure will be described. Figure 1 1 is a schematic perspective view showing a linear guide unit in Embodiment 1 of the present disclosure. Figure 1 In the figures shown below, the X direction indicates the width direction, i.e., the short side direction, of the direct-acting guide unit, the Y direction indicates the long side direction of the direct-acting guide unit, and the Z direction indicates the thickness direction (height direction) of the direct-acting guide unit. The X direction, the Y direction, and the Z direction are orthogonal to each other. It should be noted that, from the perspective of convenience of explanation, the direction indicated by the arrow X is set to the left, the direction opposite to the arrow X is set to the right, the direction indicated by the arrow Y is set to the forward direction, the direction opposite to the arrow Y is set to the backward direction, the direction indicated by the arrow Z is set to the upward direction, and the direction opposite to the arrow Z is set to the downward direction, but these are only different from the following. Figure 1 The arrangement of the linear guide unit corresponds to the situation shown in the figure, and any direction of left and right, up and down, front and back may change depending on the installation condition of the linear guide unit.
[0041] Figure 2 yes Figure 1 A schematic top view of the linear guide unit shown. Figure 2 is viewed in the direction opposite to the direction indicated by arrow Z Figure 1 The figure shows the linear guide unit. Figure 2 The guide rails are indicated by dot-dash lines. Figure 3 yes Figure 1 A schematic bottom view of the linear guide unit shown. Figure 3 Observe in the direction indicated by arrow Z Figure 1 The figure shows the linear guide unit. Figure 4 yes Figure 1 A schematic front view of the linear guide unit shown. Figure 4 Observe in the direction indicated by arrow Y Figure 1 The figure shows the linear guide unit. Figure 5 is Figure 1 A schematic cross-sectional view when cut at the section indicated by VV in FIG. Figure 6 is Figure 1 The illustrated linear motion guide unit is a schematic perspective view in which a portion of a cover member described later is omitted. Figure 7 yes Figure 6 A schematic front view of the linear guide unit shown. Figure 8 is Figure 1The illustrated linear motion guide unit is a schematic perspective view in which a moving member described later is omitted from the illustration. Fig. 9 is Figure 1 The illustrated linear motion guide unit is a schematic perspective view in which a portion of a moving member and a cover member are omitted from illustration.
[0042] Reference Figures 1 to 9 The linear guide unit 10a of the first embodiment of the present disclosure includes: a guide rail 11a, a sliding member 21a, a plurality of balls 20a as rolling bodies, a cover member 31a, a moving member 51a and a connecting member 56a. It should be noted that such a structure including the balls 20a as rolling bodies can make the device structure compact. The structure of each component is described in detail below.
[0043] The guide rail 11a includes: a guide rail upper surface 12a and a guide rail lower surface 12b arranged at intervals along the Z direction; a guide rail front surface 13a and a guide rail rear surface 13b arranged at intervals along the Y direction; and guide rail side surfaces 14a and 14b arranged at intervals on both sides of the guide rail 11a along the X direction. The guide rail side surface 14a is located on the right side of the guide rail 11a, and the guide rail side surface 14b is located on the left side of the guide rail 11a. The guide rail 11a includes first track surfaces 15a and 15b respectively arranged on the guide rail side surfaces 14a and 14b and extending in parallel along the long side direction. That is, the first track surfaces 15a and 15b are respectively arranged on the guide rail side surfaces 14a and 14b. The first track surfaces 15a and 15b are respectively recessed in a groove shape. The first track surfaces 15a and 15b are respectively recessed in a semicircular arc shape along the outer shape of the ball 20a as a rolling body when viewed in the Y direction.
[0044] The guide rail 11a is provided with a plurality of through holes 16, which penetrate from the guide rail upper surface 12a to the guide rail lower surface 12b along the Z direction (see in particular Figure 3 ). The plurality of through holes 16 are provided at intervals in the Y direction. For example, when the linear guide unit 10a is used, the through holes 16 are effectively used when the guide rail 11a is installed at a predetermined position.
[0045] Next, the structure of the sliding member 21a will be described. The sliding member 21a is mounted on the guide rail 11a so as to be relatively movable. The sliding member 21a includes a pair of sleeves 23a and 23b disposed on both sides of the guide rail 11a in the width direction and a base portion 22a connected to each of the pair of sleeves 23a and 23b. The pair of sleeves 23a and 23b are disposed at intervals along the X direction. The base portion 22a includes a sliding member lower surface 24a (see in particular) which is opposed to the guide rail upper surface 12a when the sliding member 21a is mounted on the guide rail 11a. Figure 5). The sliding member 21a is slidably mounted on the guide rail 11a. In the present embodiment, the sliding member 21a is mounted so as to straddle the guide rail 11a and is movable in the Y direction.
[0046] The sliding member 21a includes a housing 25a, a front end cover 26a, a rear end cover 26b and an intermediate member 27a. The housing 25a has a rectangular shape when viewed along the Z direction. The housing 25a includes second track surfaces 17a and 17b (see in particular the first track surfaces 15a and 15b) that are opposite to each other. Figure 5 ). The second track surfaces 17a and 17b extend in parallel along the long side direction and are recessed in a groove shape. The second track surfaces 17a and 17b are recessed in a semicircular arc shape along the outer shape of the ball 20a when viewed in the Y direction. The track path 18a on which the ball 20a rolls is composed of the first track surface 15a and the second track surface 17a. The track path 18b on which the ball 20a rolls is composed of the first track surface 15b and the second track surface 17b.
[0047] The housing 25a is provided with return paths 19a and 19b which are parallel to the track paths 18a and 18b, respectively. The return paths 19a and 19b are shaped to extend in the longitudinal direction (Y direction), and the plurality of balls 20a move in the return paths 19a and 19b.
[0048] The front end cover 26a is mounted on one side of the long side direction of the housing 25a by bolts 30a, specifically, it is mounted on the guide rail front surface 13a side of the housing 25a by bolts 30a in the long side direction. In addition, a direction conversion path (not shown) for converting the direction of the ball 20a is provided in the front end cover 26a. The rear end cover 26b is mounted on the other side of the long side direction of the housing 25a by bolts 30a, specifically, it is mounted on the guide rail rear surface 13b side of the housing 25a in the long side direction by bolts 30a. In addition, a direction conversion path (not shown) for converting the direction of the ball 20a is provided in the rear end cover 26b. Each direction conversion path connects the track path 18a and the return path 19a, and connects the track path 18b and the return path 19b. A plurality of balls 20a circulate in the track path 18a, the direction conversion path provided in the front end cover 26a, the return path 19a, and the direction conversion path provided in the rear end cover 26b. In addition, the plurality of balls 20a circulate in the track path 18b, the direction-changing path provided in the front end cover 26a, the return path 19b, and the direction-changing path provided in the rear end cover 26b.
[0049] The housing 25a is provided with a plurality of mounting holes, specifically, four mounting holes (not shown) are provided at intervals in the X direction and the Y direction. The sliding member 21a and the moving member 51a including the housing 25a are connected by the connecting member 56a through the mounting holes.
[0050] The intermediate member 27a is plate-shaped and rectangular when viewed from the Z direction. The intermediate member 27a is arranged between the housing 25a, the front end cover 26a, the rear end cover 26b and the upper wall portion 32a of the cover member 31a described later in the Z direction. The intermediate member 27a is fixed to the housing 25a. The intermediate member 27a is arranged to be able to slide together with the housing 25a, the front end cover 26a and the rear end cover 26b. A pair of positioning protrusions 29a and 29b protruding in the thickness direction (Z direction) are provided on the intermediate member 27a. A pair of positioning protrusions 29a and 29b are arranged at intervals in the X direction. A pair of positioning protrusions 29a and 29b are respectively shaped to extend in the Y direction. The positioning protrusions 29a and 29b are used to position the movable member 51a when connecting the intermediate member 27a and the movable member 51a.
[0051] Next, the structure of the cover member 31a covering the guide rail 11a and the sliding member 21a is described. The cover member 31a includes an upper wall portion 32a, a front side wall portion 33a, a rear side wall portion 33b, a right side wall portion 34a, a left side wall portion 34b and a flat plate portion 35a. The outer shape of the cover member 31a is a rectangle in which the long side direction (Y direction) is longer than the short side direction (X direction) when observed along the thickness direction (Z direction) of the flat plate portion 35a. An opening portion 36a is provided in the center of the flat plate portion 35a. The front side wall portion 33a, the rear side wall portion 33b, the right side wall portion 34a and the left side wall portion 34b are arranged to stand up from the flat plate portion 35a. The front side wall portion 33a and the rear side wall portion 33b are respectively connected to the upper wall portion 32a and extend in a direction intersecting with the upper wall portion 32a. Similarly, the right side wall 34a and the left side wall 34b are connected to the upper wall 32a respectively and extend in the direction intersecting with the upper wall 32a. In the present embodiment, the front side wall 33a, the rear side wall 33b, the right side wall 34a and the left side wall 34b are arranged to stand vertically in the thickness direction (Z direction) of the flat plate 35a. The front side wall 33a and the rear side wall 33b are arranged at intervals in the Y direction. The right side wall 34a and the left side wall 34b are arranged at intervals in the X direction. The upper wall 32a is connected to the front side wall 33a, the rear side wall 33b, the right side wall 34a and the left side wall 34b. The upper wall 32a and the flat plate 35a are arranged parallel to each other at intervals in the Z direction.
[0052] The portion 39a where the upper wall portion 32a and the right side wall portion 34a are connected is formed by a curved surface. Similarly, the portion 39b where the upper wall portion 32a and the left side wall portion 34b are connected is also formed by a curved surface. In the present embodiment, the portion 39a where the upper wall portion 32a and the right side wall portion 34a are connected and the portion 39b where the upper wall portion 32a and the left side wall portion 34b are connected are respectively R surfaces when the linear guide unit 10a is observed from the front (Y direction). The cover member 31a covers the guide rail 11a and the sliding member 21a in a space 37a surrounded by the upper wall portion 32a, the front side wall portion 33a, the rear side wall portion 33b, the right side wall portion 34a and the left side wall portion 34b. In this way, the cover member 31a itself can be easily deformed, and the possibility of the cover member 31a being bent and raised when the first zipper 41a or the second zipper 41b described later is opened can be reduced. Therefore, the possibility of interference between the sliding member 21a and the cover member 31a can be reduced, and the smooth movement of the sliding member 21a can be further ensured. It should be noted that the cover member 31a is installed by fixing the flat plate portion 35a to a predetermined installation position, for example, using an adhesive or screws. A plurality of threaded holes for installing screws may also be provided through the flat plate portion 35a in the thickness direction.
[0053] At least a portion of the cover member 31a includes a structure in which a plurality of resin materials with different strengths are stacked. Specifically, for example, the entire cover member 31a is composed of polyurethane rubber. Moreover, in the flat plate portion 35a, which is a part of the cover member 31a, a polyurethane tarpaulin or a fusible sheet is installed by attaching or welding, so that appropriate flexibility can be ensured in the flat plate portion 35a and the strength can be maintained at a high level. That is, a structure in which polyurethane rubber and polyurethane tarpaulin are stacked is formed in the area where the flat plate portion 35a is located. Therefore, shape deformation in the flat plate portion 35a, which is at least a part of the cover member 31a, can be suppressed, and the possibility of interference with the sliding member 21a can be reduced. It should be noted that, for example, in the material of at least a part of the cover member 31a, the area between the first left element 43a and the second right element 42b described later can also be composed of an elastomer other than polyurethane rubber.
[0054] The direct-acting guide unit 10a includes shielding members 61a and 61b. The shielding members 61a and 61b are plate-like members bent into an L-shape and are arranged to extend along the long side direction. The shielding member 61a is installed on the guide rail side surface 14a, and is arranged between the guide rail side surface 14a and the first opening area 46a of the first zipper 41a described later in a direction perpendicular to the long side direction and when viewed from the guide rail upper surface 12a side. The shielding member 61b is installed on the guide rail side surface 14b, and is arranged between the guide rail side surface 14b and the second opening area 46b of the second zipper 41b described later in a direction perpendicular to the long side direction and when viewed from the guide rail upper surface 12a side.
[0055] The cover member 31a includes a first zipper 41a and a second zipper 41b extending in the longitudinal direction (Y direction) respectively. The first zipper 41a and the second zipper 41b are respectively arranged on the upper wall portion 32a. Specifically, the first zipper 41a is formed on the first belt member 47a, and the first belt member 47a formed with the first zipper 41a constitutes a part of the upper wall portion 32a of the cover member 31a. In addition, the second zipper 41b is formed on the second belt member 47b, and the second belt member 47b formed with the second zipper 41b constitutes a part of the upper wall portion 32a of the cover member 31a. The first zipper 41a and the second zipper 41b are arranged in parallel with a gap in the X direction. The first zipper 41a is arranged on the right side relative to the second zipper 41b.
[0056] The structure of the first fastener 41a is described. The first fastener 41a includes a first right-side element 42a, a first left-side element 43a, a first front-side sliding member 44a, and a first rear-side sliding member 45a. The first right-side element 42a extends in the longitudinal direction. The first left-side element 43a is arranged to extend along the first right-side element 42a in the longitudinal direction. That is, the first right-side element 42a and the first left-side element 43a are arranged adjacent to each other in the X direction. The first left-side element 43a is configured to be able to mesh with the first right-side element 42a. The first front-side sliding member 44a is mounted on the first right-side element 42a and the first left-side element 43a. The first front-side sliding member 44a is fixed to the sliding member 21a, specifically, to the intermediate member 27a. The first rear-side sliding member 45a is also mounted on the first right-side element 42a and the first left-side element 43a in the same manner as the first front-side sliding member 44a. The first rear-side sliding member 45a is located at a position separated from the first front-side sliding member 44a in the longitudinal direction (Y direction). The first rear slider 45a is also fixed to the sliding member 21a, specifically, to the intermediate member 27a, similarly to the first front slider 44a.
[0057] When the sliding member 21a moves, the first front sliding member 44a and the first rear sliding member 45a move in the opposite direction to the other side, thereby separating the first right element 42a and the first left element 43a from each other, and move in the direction to the other side, thereby engaging the first right element 42a and the first left element 43a with each other. A first opening region 46a (particularly referring to FIG. 46 ) is formed between the first front sliding member 44a and the first rear sliding member 45a in the longitudinal direction when the first right element 42a and the first left element 43a are separated. Figure 8 and Fig. 9 ). The first support members 57a and 58a described later are arranged in the first opening region 46a. It should be noted that a moving member 51a is arranged above the first opening region 46a, so that the first opening region 46a cannot be visually confirmed from the outside, especially in the Z direction.
[0058] Next, the structure of the second zipper 41b is described. The second zipper 41b includes a second right-side element 42b, a second left-side element 43b, a second front-side sliding member 44b and a second rear-side sliding member 45b. The second right-side element 42b extends in the long-side direction. Regarding the configuration of the second zipper 41b, specifically, the first left-side element 43a of the first zipper 41a and the second right-side element 42b of the second zipper 41b are adjacently arranged with a gap in the X direction. The second left-side element 43b is arranged to extend along the second right-side element 42b in the long-side direction. That is, the second right-side element 42b and the second left-side element 43b are adjacently arranged in the X direction. The second left-side element 43b is configured to be able to mesh with the second right-side element 42b. The second front-side sliding member 44b is mounted on the second right-side element 42b and the second left-side element 43b. The second front-side sliding member 44b is fixed to the sliding member 21a, specifically, to the intermediate member 27a. The second rear side slide 45b is also attached to the second right side element 42b and the second left side element 43b in the same manner as the second front side slide 44b. The second rear side slide 45b is located at a position separated from the second front side slide 44b in the long side direction (Y direction). The second rear side slide 45b is also fixed to the sliding member 21a, specifically, to the intermediate member 27a, in the same manner as the second front side slide 44b.
[0059] When the sliding member 21a moves, the second front sliding member 44b and the second rear sliding member 45b move in the opposite direction to the other side, thereby separating the second right element 42b and the second left element 43b from each other, and move in the direction to the other side, thereby engaging the second right element 42b and the second left element 43b with each other. A second opening region 46b (particularly referring to the second opening region 46b) is formed between the second front sliding member 44b and the second rear sliding member 45b in the longitudinal direction, which is generated when the second right element 42b and the second left element 43b are separated. Figure 8 and Fig. 9 ). The second support members 57b and 58b described later are arranged in the second opening region 46b. It should be noted that a moving member 51a is also arranged above the second opening region 46b, so that the second opening region 46b cannot be visually confirmed from the outside, especially in the Z direction.
[0060] The movable member 51a is plate-shaped. The outer shape of the movable member 51a is rectangular when viewed from the Z direction. The movable member 51a is arranged on the outside of the cover member 31a. Specifically, the movable member 51a is arranged above the upper wall portion 32a of the cover member 31a. In addition, the movable member 51a is arranged across each of the first zipper 41a and the second zipper 41b of the two rows. A plurality of mounting holes 52a are provided on the movable member 51a, and a transport member (not shown) transported together with the movable member 51a is installed by using the mounting holes 52a. A plurality of connecting holes 53a are provided on the movable member 51a, and the connecting holes 53a are used to connect with the sliding member 21a, specifically, the intermediate member 27a included in the sliding member 21a. In the present embodiment, a total of four connecting holes 53a are provided in the X direction and the Y direction, respectively, at intervals. In addition, the moving member 51a is provided with a pair of receiving recesses 54a, 54b (see in particular Figure 5 ). The receiving recesses 54a, 54b are shaped to receive a pair of positioning protrusions 29a, 29b provided on the intermediate member 27a. The moving member 51a is connected and fixed to the intermediate member 27a included in the sliding member 21a by using the connecting member 56a, specifically, the first supporting members 57a, 58a and the second supporting members 57b, 58b, and the connecting hole 53a and the receiving recesses 54a, 54b.
[0061] The connecting member 56a connects the sliding member 21a and the moving member 51a. The connecting member 56a includes first supporting members 57a, 58a and second supporting members 57b, 58b. The first supporting members 57a, 58a are bolt-shaped and extend in the Z direction, respectively. The first supporting members 57a, 58a are arranged at intervals along the long side direction. The first supporting members 57a, 58a are arranged between the first front side sliding member 44a and the first rear side sliding member 45a in the long side direction, respectively. Specifically, the first supporting members 57a, 58a are arranged in the above-mentioned first opening area 46a. That is, through the first opening area 46a, the sliding member 21a covered by the cover member 31a and the moving member 51a arranged outside the cover member 31a become a structure that can be connected by the first supporting members 57a, 58a. In addition, the second supporting members 57b, 58b are bolt-shaped and extend in the Z direction, respectively. The second supporting members 57b, 58b are arranged at intervals along the long side direction. The second supporting members 57b and 58b are respectively arranged between the second front sliding member 44b and the second rear sliding member 45b in the long side direction. Specifically, the second supporting members 57b and 58b are arranged in the second opening area 46b. That is, through the second opening area 46b, the sliding member 21a covered by the cover member 31a and the moving member 51a arranged outside the cover member 31a become a structure that can be connected by the second supporting members 57b and 58b. In this embodiment, the moving member 51a is supported by the first supporting members 57a and 58a and the second supporting members 57b and 58b.
[0062] Here, in the direction perpendicular to the long side direction and when viewed from the guide rail upper surface 12a side, the first opening area 46a generated when the first right side element 42a and the first left side element 43a are separated from each other is arranged at a position avoiding the guide rail 11a. That is, the first opening area 46a is set at a position that does not overlap with the guide rail 11a when viewed from the Z direction. In the present embodiment, in the direction perpendicular to the long side direction and when viewed from the guide rail upper surface 12a side, the first fastener 41a is arranged at a position avoiding the guide rail 11a. Similarly, in the direction perpendicular to the long side direction and when viewed from the guide rail upper surface 12a side, the second opening area 46b generated when the second right side element 42b and the second left side element 43b are separated from each other is arranged at a position avoiding the guide rail 11a. That is, the second opening area 46b is set at a position that does not overlap with the guide rail 11a when viewed from the Z direction. In the present embodiment, in the direction perpendicular to the long side direction and when viewed from the guide rail upper surface 12a side, the second fastener 41b is arranged at a position avoiding the guide rail 11a. More specifically, the guide rail 11 a is arranged between the first opening region 46 a and the second opening region 46 b in the X direction when viewed from the guide rail upper surface 12 a side in a direction perpendicular to the longitudinal direction.
[0063] According to the linear guide unit 10a of such a structure, the guide rail 11a and the sliding member 21a are covered by the cover member 31a. Moreover, when the sliding member 21a is in motion, that is, when the sliding member 21a reciprocates linearly, the first right element 42a and the first left element 43a included in the first fastener 41a are separated and engaged, so that the sliding member 21a can be slid while maintaining the state of the guide rail 11a and the sliding member 21a covered by the cover member 31a. Therefore, the dustproofness and waterproofness of the sliding member 21a during sliding can be improved. Here, in the direction perpendicular to the long side direction and when viewed from the guide rail upper surface 12a side, the first opening area 46a generated when the first right element 42a and the first left element 43a are separated from each other is arranged at a position avoiding the guide rail 11a, so that foreign matter such as dust on the cover member 31a enters the inside of the cover member 31a when the first right element 42a and the first left element 43a are separated, and the possibility of foreign matter reaching the guide rail 11a can also be reduced. In this way, the possibility of foreign matter adhering to the first track surfaces 15a, 15b can be reduced, and the smooth sliding of the sliding member 21a can be prevented from being hindered by foreign matter on the track paths 18a, 18b formed by the first track surfaces 15a, 15b and the second track surfaces 17a, 17b. Therefore, according to such a linear guide unit 10a, the smooth movement of the sliding member 21a can be ensured.
[0064] In addition, according to the above-mentioned direct-acting guide unit 10a, the second zipper 41b of the above-mentioned structure is included. Therefore, the second opening area 46b is arranged at a position away from the guide rail 11a. Therefore, even if foreign matter enters from the second opening area 46b, the possibility of foreign matter adhering to the first track surface 15a, 15b can be reduced, and the smooth movement of the sliding member 21a can be ensured. In addition, since the movable member 51a can be supported by both the first supporting member 57a, 58a and the second supporting member 57b, 58b, the load applied to the movable member 51a can be dispersedly borne. Therefore, the load resistance can be improved.
[0065] In this embodiment, the area between the first left element 43a and the second right element 42b is made of an elastic body, so that the bending or bulging of the area between the first left element 43a and the second right element 42b during the separation and engagement of the sliding member 21a can be suppressed, and the possibility of interference between the cover member 31a and the guide rail 11a and the sliding member 21a can be reduced.
[0066] In the present embodiment, a shielding member 61a is included, which is mounted on the guide rail side surface 14a and is arranged between the guide rail side surface 14a and the first opening area 46a of the first zipper 41a in a direction perpendicular to the long side direction and when viewed from the guide rail upper surface 12a side. In addition, a shielding member 61b is included, which is mounted on the guide rail side surface 14b and is arranged between the guide rail side surface 14b and the second opening area 46b of the second zipper 41b in a direction perpendicular to the long side direction and when viewed from the guide rail upper surface 12a side. Therefore, in the area not covered by the cover member 31a, the possibility of foreign matter intruding from the guide rail side surfaces 14a and 14b can be reduced by using the shielding members 61a and 61b. Therefore, the smooth movement of the sliding member 21a can be further ensured.
[0067] (Implementation Method 2)
[0068] Next, another embodiment, that is, Embodiment 2, will be described. Fig.10 This is a schematic perspective view of a linear guide unit in Embodiment 2 of the present disclosure.
[0069] Reference Fig.10 In the direct-acting guide unit 10b in the second embodiment, the upper wall portion 32a, the front side wall portion 33a, the rear side wall portion 33b, the right side wall portion 34a and the left side wall portion 34b included in the cover member 31b are configured so that the interior can be visually confirmed from the outside. Specifically, the upper wall portion 32a, the front side wall portion 33a, the rear side wall portion 33b, the right side wall portion 34a and the left side wall portion 34b included in the cover member 31b are formed of a transparent resin. In this way, it is easy to grasp the state of the interior of the cover member 31b, and the maintainability can be improved. It should be noted that, with respect to the structure that can visually confirm the interior, it is not necessary to set the upper wall portion 32a, the front side wall portion 33a, the rear side wall portion 33b, the right side wall portion 34a and the left side wall portion 34b as all transparent structures. For example, a transparent structure can be set in the area corresponding to the parts 39a and 39b in the first embodiment.
[0070] (Implementation 3)
[0071] Next, another embodiment, that is, Embodiment 3 will be described. Fig.11 This is a schematic perspective view showing a part of a linear motion guide unit in Embodiment 3 of the present disclosure. Fig.11 Illustration of the moving member is omitted.
[0072] Reference Fig.11In the linear guide unit 10c in the third embodiment, the first front sliding member 44a and the first rear sliding member 45a are provided with sealing members 64a and 65a, and the sealing members 64a and 65a clean the upper part of the area where the first right element 42a and the first left element 43a are meshed. In addition, the second front sliding member 44b and the second rear sliding member 45b are provided with sealing members 64b and 65b, and the sealing members 64b and 65b clean the upper part of the area where the second right element 42b and the second left element 43b are meshed. In this way, since the sealing members 64a and 65a move when the first front slider 44a and the first rear slider 45a move, and the sealing members 64b and 65b move when the second front slider 44b and the second rear slider 45b move, the possibility of foreign matter accumulated on the upper part of the cover member 31a entering the inside of the cover member 31a can be reduced by the sealing members 64a, 65a, 64b, 65b. Therefore, the possibility of foreign matter entering the rail paths 18a and 18b can be reduced, and the smooth movement of the sliding member 21a can be further ensured.
[0073] (Implementation 4)
[0074] Next, Embodiment 4 which is still another embodiment will be described. Fig.12 This is a schematic perspective view showing a part of a linear motion guide unit in Embodiment 4 of the present disclosure.
[0075] Reference Fig.12 In the linear guide unit 10d in the fourth embodiment, the flat plate portion 35d of the cover member 31d includes: a first area 71a connected to the front side wall portion 33a, a second area 71b connected to the rear side wall portion 33b, a third area 72a connected to the right side wall portion 34a, and a fourth area 72b connected to the left side wall portion 34b. The first area 71a, the second area 71b, the third area 72a, and the fourth area 72b are rectangular when viewed from the Z direction. Here, the cover member 31d includes a belt member 48a disposed at a position opposite to the guide rail upper surface 12a. The first left element 43a is disposed at one end of the belt member 48a in the direction perpendicular to the long side direction, that is, the width direction, and the second right element 42b is disposed at the other end of the belt member 48a in the width direction. In this way, the possibility of positional deviation of the first left element 43a and the second right element 42b in the long side direction can be reduced, and the bending of the belt member 48a can be suppressed.
[0076] (Other embodiments)
[0077] It should be noted that, in the above-mentioned embodiment, balls are used as rolling elements, but the present invention is not limited to this, and rollers may be used as rolling elements.
[0078] Furthermore, in the above-described embodiment, the structure has two rows of fasteners, but the present invention is not limited thereto, and the structure may be one row, or three or more rows of fasteners.
[0079] It should be noted that, in the above-mentioned embodiment, at least one of the right element and the left element may also contain an oil-containing resin provided at the portion where they mesh with each other. In this way, the oil component that seeps out from the oil-containing resin when the right element and the left element mesh and separate can promote smooth movement of the right element and the left element, and can ensure smooth movement of the sliding member.
[0080] It should be understood that the embodiments disclosed this time are illustrative in all aspects and are not restrictive in any aspect. The scope of the present invention is defined by the claims, and is intended to include all modifications within the meaning and scope equivalent to the claims.
[0081] Description of Reference Numerals
[0082] 10a, 10b, 10c, 10d direct-acting guide unit; 11a guide rail; 12a upper surface of guide rail; 12b lower surface of guide rail; 13a front surface of guide rail; 13b rear surface of guide rail; 14a, 14b side surface of guide rail; 15a, 15b first track surface; 16 through hole; 17a, 17b second track surface; 18a, 18b track path; 19a, 19b return path; 20a ball; 21a sliding member; 22a base portion; 23a, 23b sleeve portion; 24a lower surface of sliding member; 25a housing; 26a front end cover; 26b rear end cover; 27a intermediate member; 29a mounting hole; 31a cover member; 32a upper wall portion; 33a front wall portion; 33b rear wall portion; 34a right wall portion; 34b left wall portion; 35a flat plate portion; 36a opening portion; 37a space; 39a, 39b Part; 41a first zipper; 41b second zipper; 42a first right side element; 42b second right side element; 43a first left side element; 43b second left side element; 44a first front side sliding member; 44b second front side sliding member; 45a first rear side sliding member; 45b second rear side sliding member; 46a first opening area; 46b second opening area; 47a first belt member; 47b second belt member; 48a belt member; 51a moving member; 52a mounting hole; 53a connecting hole; 54a, 54b receiving recess; 56a connecting member; 57a, 58a first supporting member; 57b, 58b second supporting member; 61a, 61b shielding member; 64a, 64b, 65a, 65b sealing member; 71a first area; 71b second area; 72a third area; 72b fourth area.
Claims
1. A linear guide unit, wherein: have: The guide rail comprises a guide rail upper surface and a guide rail side surface respectively extending in the long side direction, wherein a first track surface is arranged on the guide rail side surface; A sliding member is relatively movably mounted on the guide rail, comprising a sliding member lower surface opposite to the guide rail upper surface and a second track surface opposite to the first track surface; A plurality of rolling elements rolling on a track formed by the first track surface and the second track surface; a cover member including a first zipper extending along the long side direction and covering the guide rail and the sliding member; a moving member, disposed outside the cover member and moving together with the sliding member; as well as A connecting member connecting the sliding member and the moving member; The first zipper comprises: A first right side element extending along the long side direction; a first left side element extending along the first right side element in the direction of the long side and capable of engaging with the first right side element; A first front sliding member, mounted on the first right element and the first left element, fixed to the sliding member and the moving member; and a first rear sliding member, mounted on the first right element and the first left element, located at a position separated from the first front sliding member in the long side direction, and fixed to the sliding member and the moving member; When the sliding member and the moving member move, the first front sliding member and the first rear sliding member move in a direction opposite to the other side so as to separate the first right element and the first left element from each other, and move in a direction toward the other side so as to engage the first right element and the first left element with each other. The connecting member includes a first supporting member, the first supporting member being arranged between the first front sliding member and the first rear sliding member in the longitudinal direction and supporting the moving member, When viewed from the upper surface side of the guide rail in a direction perpendicular to the long side direction, A first opening area generated when the first right element and the first left element are separated from each other is arranged at a position avoiding the guide rail.
2. The linear guide unit according to claim 1, wherein: The cover member includes a second zipper extending along the longitudinal direction and arranged in parallel with the first zipper. The second zipper comprises: A second right-side element extending along the long side direction and arranged adjacent to the first left-side element; a second left side element extending along the second right side element in the direction of the long side and capable of engaging with the second right side element; A second front sliding member, mounted on the second right element and the second left element, fixed to the sliding member and the moving member; and a second rear sliding member, mounted on the second right element and the second left element, located at a position separated from the second front sliding member in the long side direction, and fixed to the sliding member and the moving member; When the sliding member and the moving member move, the second front sliding member and the second rear sliding member move in the direction opposite to the other side so as to separate the second right element and the second left element from each other, and move in the direction toward the other side so as to engage the second right element and the second left element with each other. The connecting member includes a second supporting member, the second supporting member being arranged between the second front sliding member and the second rear sliding member in the longitudinal direction and supporting the moving member, When viewed from the upper surface side of the guide rail in a direction perpendicular to the long side direction, A second opening area generated when the second right element and the second left element are separated from each other is arranged at a position avoiding the guide rail.
3. The linear guide unit according to claim 2, wherein: The area between the first left element and the second right element is made of an elastic body.
4. The linear guide unit according to claim 2 or 3, wherein: The cover member includes a belt member provided at a position facing the upper surface of the guide rail. The first left element is provided at one end portion of the belt member in a direction perpendicular to the longitudinal direction, that is, in a width direction, and the second right element is provided at the other end portion of the belt member in the width direction.
5. The linear guide unit according to claim 1 or 2, wherein: A shielding member is further provided, the shielding member being mounted on the side surface of the guide rail and being arranged between the side surface of the guide rail and the first opening region of the first fastener in a direction perpendicular to the longitudinal direction and viewed from the upper surface of the guide rail.
6. The linear guide unit according to claim 1 or 2, wherein: At least a portion of the cover member includes a structure in which a plurality of resin materials having different strengths are laminated.
7. The linear guide unit according to claim 1 or 2, wherein: At least a portion of the cover member is configured so that the inside can be visually confirmed from the outside.
8. The linear guide unit according to claim 1 or 2, wherein: A sealing member is provided on at least one of the first front slider and the first rear slider, and the sealing member cleans an upper portion of a region where the first right element and the first left element mesh with each other.
9. The linear guide unit according to claim 1 or 2, wherein: The cover member comprises: The upper wall portion is provided with the first zipper; and A side wall portion connected to the upper wall portion and extending in a direction intersecting the upper wall portion; A portion where the upper wall portion and the side wall portion are connected is formed of a curved surface.
10. The linear guide unit according to claim 1 or 2, wherein: At least one of the right element and the left element includes an oil-containing resin provided in a portion meshing with each other.