Rotary shelf

Abstract

A rotary shelf is disclosed. The rotary shelf according to one aspect of the present invention comprises: a base; a shelf capable of linearly moving with respect to the base and rotating only at a specific position; and a coupling member for movably and rotatably coupling the shelf to the base.

Description

rotating lathe

[0001] The present invention relates to a rotary lathe capable of linear movement and rotation.

[0002] Rotating shelves are used in refrigerators, display cases, and storage spaces. The upper shelf (the space where items are placed) rotates, facilitating user access to items. For example, a rotating shelf inside a refrigerator rotates to bring items from the back toward the front, providing convenience for users.

[0003] A rotary lathe of this type is disclosed in Korean Patent No. 2515334, among others. However, the rotary lathe described in the above-mentioned prior document has a complex structure, which causes considerable difficulties in manufacturing and assembly.

[0004] Accordingly, the present invention has been developed to solve the above-described problems, and aims to provide a rotary lathe having a simple structure and being convenient to use.

[0005] Other objects of the present invention will become more apparent through the embodiments described below.

[0006] A rotary lathe according to one aspect of the present invention includes a base, a lathe capable of moving linearly with respect to the base and rotating only at a specific position, and a coupling member for movably and rotatably coupling the lathe to the base.

[0007] A rotary lathe according to the present invention may include one or more of the following embodiments. For example, a bearing is interposed between the base and the lathe, and the bearing facilitates linear movement and rotation of the lathe.

[0008] The base may be formed with an upper guide groove that limits the area in which the bearing can move linearly and / or rotate, and the lathe may also be formed with a lower guide groove that limits the area in which the bearing can move linearly and / or rotate.

[0009] The bearing has a ring-shaped body, and a plurality of balls can be rotatably provided in the body.

[0010] An upper guide area is formed inside the upper guide groove, and the upper guide area can protrude upward compared to the lower surface of the upper guide groove. The upper guide area can also have the same height as the upper surface of the base.

[0011] A lower guide area is formed inside the lower guide groove, and the lower guide area may protrude downward compared to the upper surface of the lower guide groove. The lower guide area may have the same height as the lower surface of the shelf.

[0012] The upper guide region has a moving hole that guides the linear movement of the connecting member, a linear guide groove formed in a straight line on both sides of the moving hole to guide the linear movement of the shelf, and an arc-shaped rotational guide groove that is connected to each end of the linear guide groove, and at least one of the shelf and the connecting member may have a shelf guide projection inserted into the linear guide groove and the rotational guide groove.

[0013] The rotation guide groove is formed by a rotation guide projection having a circular shape, and an entry step is formed between the straight guide groove and the rotation guide groove, and the entry step may have a curved shape.

[0014] The rotation guide lugs and entry steps limit the linear movement of the lathe when the lathe is in a specific rotational position.

[0015] The front side of the upper guide home can be formed in the shape of an arc centered on the front end of the moving hole.

[0016] When the shelf is extended forward and placed in a rotatable position, some of the bearings may be positioned forward of the front edge of the base.

[0017] A guide wall protruding upward from an edge of the upper guide groove may be formed on the base. A guide wall protruding upward from an edge of the upper guide groove may be formed on the upper guide area.

[0018] The shelf guide protrusions can be formed in two or four pieces.

[0019] The connecting member has a head portion that is connected to the shelf and a hook body that is connected to the base, and a cut portion may be formed in the hook body.

[0020] The joining member can be formed as an integral part of the shelf.

[0021] The shelf may include a limiting projection protruding downward at at least one location on its front and rear sides.

[0022] The base may be equipped with a suction member, and the shelf may be capable of rotating 360 degrees at a specific position.

[0023] The base may have an upper catch, and the shelf may have a lower catch that can go over the upper catch. If the base includes a suction member, the upper catch may be formed on the upper portion of the suction member.

[0024] As discussed above, the problem-solving means of the present invention can be expected to produce various effects, including the following. However, the present invention is not established unless all of the following effects are achieved.

[0025] The present invention can provide a rotary lathe having a simple structure and being convenient to use.

[0026] FIG. 1 is a perspective view illustrating a rotary lathe according to a first embodiment of the present invention.

[0027] Figure 2 is an exploded perspective view of the rotating lathe illustrated in Figure 1.

[0028] Figure 3 is a plan view illustrating the base of the rotary lathe illustrated in Figure 1.

[0029] Fig. 4 is a perspective view illustrating a bearing of the rotary lathe illustrated in Fig. 1.

[0030] FIG. 5 is a perspective view illustrating the lower surface of the lathe in the rotating lathe illustrated in FIG. 1.

[0031] Fig. 6 is a perspective view illustrating a connecting member of the rotating lathe illustrated in Fig. 1.

[0032] Figures 7 and 8 are a perspective view and a cross-sectional perspective view illustrating a state in which a lathe is pulled out from the rotating lathe illustrated in Figure 1.

[0033] Figure 9 is a perspective view illustrating a state in which the shelf is rotated in Figure 7.

[0034] FIG. 10 is a drawing illustrating the upper surface of the base and the lower surface of the lathe in a rotary lathe according to the second embodiment of the present invention.

[0035] Fig. 11 is an exploded perspective view illustrating a rotary lathe according to a third embodiment of the present invention.

[0036] Fig. 12 is a drawing illustrating the upper surface of the base and the lower surface of the lathe in the rotary lathe illustrated in Fig. 11.

[0037] Fig. 13 is a perspective view illustrating the state of the bearing when the lathe is pulled forward in the rotating lathe illustrated in Fig. 11.

[0038] Fig. 14 is a perspective view illustrating the lower surface of the joining member in the rotating lathe illustrated in Fig. 11.

[0039] Fig. 15 is a perspective view illustrating the lower surface of the lathe and the connecting member of the rotating lathe illustrated in Fig. 11.

[0040] Fig. 16 is a front view illustrating the suction member of the rotating lathe illustrated in Fig. 11.

[0041] Fig. 17 is a cross-sectional view illustrating a bearing of the rotary lathe illustrated in Fig. 11.

[0042] The present invention is susceptible to various modifications and embodiments. Specific embodiments are illustrated in the drawings and described in detail in the detailed description. However, this is not intended to limit the present invention to specific embodiments, but rather to encompass all modifications, equivalents, and alternatives falling within the spirit and technical scope of the present invention. In describing the present invention, detailed descriptions of related known technologies will be omitted if they are deemed to obscure the gist of the present invention.

[0043] The terminology used in this application is only used to describe specific embodiments and is not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly indicates otherwise. In this application, it should be understood that the terms "comprise" or "have" indicate the presence of a feature, number, step, operation, component, part, or combination thereof described in the specification, but do not exclude in advance the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

[0044] Terms such as first, second, etc. may be used to describe various components, but these components should not be limited by these terms. These terms are used solely to distinguish one component from another.

[0045] For convenience of explanation, the following expressions are used in this specification: “front,” “rear,” “inside,” “outside,” “upper,” and “lower.” In the following description, “front” refers to the direction in which the lathe (170, 270, 370) is withdrawn from the rotary lathe, and “rear” refers to the opposite direction. “Inside” refers to the side closer to the center of the rotary lathe (100, 200, 300), and “outside” refers to the opposite side. “Upper” and “lower” refer to the upper and lower directions with reference to FIGS. 1 and 11. Of course, when the rotary lathe according to one embodiment of the present invention is actually used, the upper direction mentioned in the specification may not match the actual upper direction.

[0046] Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings. In describing with reference to the attached drawings, identical or corresponding components are given the same reference numerals regardless of the drawing symbols, and redundant descriptions thereof will be omitted.

[0047]

[0048] FIG. 1 is a perspective view illustrating a rotary lathe (100) according to a first embodiment of the present invention, and FIG. 2 is an exploded perspective view of the rotary lathe (100) illustrated in FIG. 1.

[0049] Referring to FIGS. 1 and 2, the rotary lathe (100) according to the present embodiment is characterized in that the lathe (170) can move linearly and rotate, and in particular, the lathe (170) does not rotate during linear movement. The rotary lathe (100) according to the present embodiment includes a base (110), a bearing (150), a connecting member (160), and a lathe (170).

[0050] The base of the rotary lathe (100) according to the present invention may be provided as a separate member as in the first embodiment, but may correspond to a portion of the location where the rotary lathe (100) is installed. For example, the base of the rotary lathe according to another embodiment of the present invention may correspond to a portion of a storage cabinet or display case, and thus may not be provided as a separate member.

[0051]

[0052] FIG. 3 is a plan view illustrating the base (110) of the rotary lathe (100) illustrated in FIG. 1.

[0053] Referring to FIG. 3, the base (110) is fixed to the portion where the rotating shelf (100) is located, enabling linear movement and rotation of the shelf (170). An adsorption member (114) is provided on the lower surface of the base (110), so that the base (110) can be stably fixed to the floor surface.

[0054] The base (110) has a plate shape, and an upper guide groove (116) corresponding to a groove of a certain depth is formed in the center of the upper surface (112). The upper guide groove (116) is an oval-shaped groove, and the inside thereof corresponds to an area in which the bearing (150) can move. That is, the bearing (150) moves only within the space defined by the upper guide groove (116). In addition, the upper guide groove (116) may have the same size and shape as the lower guide groove (176) formed on the lower surface of the shelf (170), and may have different sizes and shapes as long as they do not interfere with the linear movement and rotation of the bearing (150).

[0055] The upper guide groove (116) has a first end (118) and a second end (120). When the shelf (170) is pulled out toward the user (see FIG. 7), the bearing (150) can contact the second end (120), and when the shelf (170) is retracted to the maximum (see FIG. 1), the bearing (150) can contact the first end (118).

[0056] The depth of the upper guide groove (116) may be formed smaller than the diameter of the ball (152) provided in the bearing (150). As a result, the ball (152) of the bearing (150) inserted into the upper guide groove (116) may come into contact with the lower surface of the shelf (170).

[0057] According to another embodiment of the present invention, a rotary lathe may have a base (110) that does not have an upper guide groove (116) and only a lathe (170) that has a lower guide groove (176).

[0058] An upper guide area (122) is formed inside the upper guide groove (116), which corresponds to an area having the same height as the upper surface (112) of the base (110). The upper guide area (122) enables the shelf (170) to be movably and rotatably coupled to the base (110). In addition, the upper guide area (122) has a protruding shape and thus serves to limit the movement of the bearing (150).

[0059] The upper guide area (122) does not contact the inner surface forming the upper guide groove (116), which allows the bearing (150) to contact either the first end (118) or the second end (120) of the upper guide groove (116). For example, the gap between the outer surface of the portion forming the upper guide area (122) and the inner surface of the portion forming the upper guide groove (116) may correspond to the thickness of the bearing (150), and the curvature of each of the first end (118) and the second end (120) of the upper guide groove (116) may correspond to the curvature of the bearing (150).

[0060] A moving hole (124) is formed in the upper guide area (122), and linear guide grooves (130) are formed on both left and right sides based on the moving hole (124), and each end of the linear guide groove (130) is connected to a rotation guide groove (132). In addition, a circular rotation guide protrusion (134) is formed inside the upper guide area (122).

[0061] The moving hole (124) is formed by penetrating the upper guide area (122) and has a shape in which the length is longer than the width. A connecting member (160) is inserted into the moving hole (124) so ​​that it can move linearly and rotate along its length. The moving hole (124) has a first end (126) and a second end (128), and the second end (128) can be formed at the center portion of the upper surface of the rotation guide protrusion (134). When the connecting member (160) is positioned at the second end (128), the shelf (170) can rotate. In addition, the length of the moving hole (124) determines the moving distance of the shelf (170).

[0062] A straight guide groove (130) is formed on both left and right sides of the moving hole (124). The depth of the straight guide groove (130) may be formed to be the same as or similar to the depth of the upper guide groove (116). In addition, a shelf guide protrusion (180) is inserted into the inside of the straight guide groove (130) to enable linear movement. In addition, the end of the straight guide groove (130) is connected to the rotation guide groove (132).

[0063] The rotation guide groove (132) corresponds to an arc-shaped groove formed by the rotation guide protrusion (134). The depth of the rotation guide groove (132) may be the same as the depth of the straight guide groove (130). A pair of shelf guide protrusions (180) of the shelf (170) are inserted into the rotation guide groove (132), which allows the shelf (170) to rotate 360 ​​degrees in a forward and reverse direction.

[0064] The rotation guide protrusion (134) is a circular protrusion and may have the same height as the upper surface (112) of the base (110). In addition, a moving hole (124) is formed in part on the upper surface of the rotation guide protrusion (134).

[0065] An entry step (136) is formed between the straight guide groove (130) and the rotation guide groove (132). The entry step (136) has a curved shape and protrudes and is spaced apart from the rotation guide protrusion (134) at a constant interval. The interval between the entry step (136) and the rotation guide protrusion (134) corresponds to a passage through which the shelf guide protrusion (180) can rotate. In addition, since the front end of the entry step (136) is formed in a curved shape, when the shelf (170) is retracted away from the user, the retraction is possible even if the direction of the shelf (170) is slightly off.

[0066] An upper catch (138) is formed on the four corners of the upper surface (112) of the base (110). The upper catch (138) corresponds to a portion where the lower catch (182) formed on the lower surface of the shelf (170) rides, thereby enabling the user to detect the rotation and movement of the shelf (170).

[0067]

[0068] Fig. 4 is a perspective view illustrating a bearing (150).

[0069] Referring to FIG. 4, the bearing (150) has a ring-shaped body (154) and a plurality of balls (152) inserted into the body (154). The bearing (150) is interposed between the base (110) and the shelf (170) to facilitate linear movement and rotation of the shelf (170). In addition, the bearing (150) is inserted into the upper guide groove (116) and the lower guide groove (176) having a groove shape, so that its movement is restricted and it does not easily come off to the outside. In addition, the bearing (150) moves together with the linear movement of the shelf (170) within the upper guide groove (116) and the lower guide groove (176). As mentioned above, when the shelf (170) is retracted (state of FIG. 1), the bearing (150) is in contact with the first end (118) of the upper guide groove (116), and when the shelf (170) is pulled out (see FIG. 7), the bearing (150) is in contact with the second end (120) of the upper guide groove (116).

[0070] A rotary lathe (100) according to another embodiment of the present invention may not have a bearing (150) or may have a bearing of a different shape and structure.

[0071]

[0072] FIG. 5 is a perspective view illustrating the lower surface of a lathe (170) in the rotary lathe (100) illustrated in FIG. 1.

[0073] Referring to FIGS. 1 and 5, the shelf (170) has a frame (172) and thus has a space of a certain depth inside. Of course, the shelf (170) according to another embodiment of the present invention may not have a frame. Objects, etc., may be placed on the upper portion of the shelf (170). In addition, the shelf (170) may move in a linear motion to approach the user and then rotate 90 degrees and 180 degrees to change its position.

[0074] A center hole (174) is formed in the center of the shelf (170). The head (162) of the connecting member (160) is hung in the center hole (174) (see Fig. 8).

[0075] A lower guide groove (176) may be formed on the lower surface of the shelf (170), and the lower guide groove (176) may have a different size and shape from the upper guide groove (116) formed on the base (110). Accordingly, the lower guide groove (176) and the upper guide groove (116) together form a certain space in which the bearing (150) can move, and prevent interference when the shelf (170) moves and rotates in a straight line with respect to the base (110).

[0076] A lower guide area (178) may be formed inside the lower guide groove (176), and the lower guide area (178) may have a different size and shape from the upper guide area (122). The shelf (170) may move linearly or rotate without interference from other parts including the bearing (150) due to the lower guide area (178) and the upper guide area (122).

[0077] A center hole (174) is formed in the central portion of the lower guide area (178), and shelf guide protrusions (180) are formed on both left and right sides of the center hole (174).

[0078] The shelf guide protrusion (180) guides the linear movement and rotation of the shelf (170). That is, when the shelf guide protrusion (180) is inserted into the linear guide groove (130), the shelf (170) is restricted from rotation and can only move linearly. In addition, when the shelf guide protrusion (180) is inserted into the rotation guide groove (132), the shelf (170) is restricted from linear movement and can only move linearly.

[0079] A lower catch (182) may be formed on the four corners of the lower surface of the shelf (180). As mentioned above, when the shelf (170) moves in a straight line or rotates, the lower catch (182) can pass over the upper catch (138) due to elasticity, thereby allowing the user to recognize whether the shelf (170) is in a specific position.

[0080]

[0081] FIG. 6 is a perspective view illustrating a connecting member (160) of the rotating lathe (100) illustrated in FIG. 1.

[0082] Referring to FIG. 6, the coupling member (160) has a head (162) and a hook body (164) and serves to movably and rotatably couple the shelf (170) to the base (110). The head (162) has a plate shape and has a larger plane size than the central portion of the coupling member (160). In addition, the head (162) is hooked onto a step (without drawing symbol) formed inside the center hole (174) to prevent the shelf (170) from being detached from the base (110).

[0083] The lower part of the head (162), that is, the central part of the connecting member (160), has a smaller diameter than other parts, and this concave central part corresponds to a part located inside the moving hole (124) (see FIG. 8). In addition, the lower part of the connecting member (160) has a larger diameter than the center, and this corresponds to a part that is forced to pass through the moving hole (124) and is caught on the base (110). In addition, a cutout (166) is formed on one side of the engaging body (164), and the cutout (166) enables the contraction of the engaging body (164) so ​​that the engaging body (164) can pass through the moving hole (124).

[0084] Although the rotary lathe (100) according to the present embodiment is exemplified as having the coupling member (160) provided separately from the lathe (170), the rotary lathe according to another embodiment of the present invention may have the coupling member formed integrally with the lathe.

[0085]

[0086] FIG. 7 and FIG. 8 are perspective views and cross-sectional perspective views illustrating a state in which a shelf (170) is withdrawn from the rotary lathe (100) illustrated in FIG. 1, and FIG. 9 is a perspective view illustrating a state in which the shelf (170) in FIG. 7 is rotated. For reference, FIG. 8 illustrates a state in which the joining member (160) is omitted in FIG. 7.

[0087] Referring to FIG. 1 and FIG. 7 to FIG. 9, the shelf (170) may be in a position retracted with respect to the base (110) (position of FIG. 1) and then may be in a position drawn out as shown in FIG. 7 by linear movement toward the user. That is, when the user pulls the shelf (170) in the state of FIG. 1 toward the user, the coupling member (160) may move along the moving hole (124) and the shelf guide protrusion (180) may move linearly along the linear guide groove (130) to reach a drawn out state as shown in FIG. 7. Since a pair of shelf guide protrusions (180) are each inserted into the linear guide groove (130) and moved during the linear movement of the shelf (170), the rotation of the shelf (170) is restricted.

[0088] As shown in Fig. 7, when the shelf (170) is fully extended forward, the shelf guide projection (180) completely passes through the straight guide groove (130) and is positioned in the rotation guide groove (132). In this state, since the rotation of the shelf guide projection (180) is not restricted by the straight guide groove (130), it can rotate 360 ​​degrees in both forward and reverse directions along the rotation guide groove (132). In addition, when the shelf (170) is fully extended forward, the bearing (150) also moves forward and comes into contact with the second end (120) of the upper guide groove (116).

[0089] The process of returning the shelf (170) to its original position (i.e., the position of Fig. 1) after the user has used the desired object or the like on the shelf (170) involves the process of rotation and linear retreat of the shelf (170), which is the opposite of the withdrawal process of the shelf going through the positions of Figs. 7 and 9 in Fig. 1.

[0090] The rotary lathe (100) according to the present embodiment can be manufactured using at least one of plastic resin, metal, and glass or a combination thereof, and the present invention is not limited by the material of the rotary lathe (100).

[0091]

[0092] FIG. 10 is a drawing illustrating a rear view of a base (210) and a shelf (270) of a rotary lathe according to a second embodiment of the present invention. The rotary lathe according to the second embodiment of the present invention has many commonalities with the rotary lathe (100) according to the first embodiment described above, and the following description will focus on the differences between the rotary lathe according to the second embodiment. The features described in relation to the first embodiment can be applied to the second embodiment, and similarly, the features described in relation to the second embodiment can be applied to the first embodiment.

[0093] Referring to FIG. 10, the base (210) and shelf (270) of the rotary lathe according to the second embodiment have the same configuration as the base (110) and shelf (170) according to the first embodiment, but differ in that four shelf guide protrusions (278) are formed on the lower surface of the shelf (270).

[0094] A center hole (272), a lower guide groove (274), and a lower catch (280) are formed on the lower surface of the shelf (270). These are the same as the center hole (174), the lower guide groove (176), and the lower catch (182) of the shelf (170) according to the first embodiment, so a detailed description thereof will be omitted.

[0095] The lower guide area (276) formed on the lower surface of the shelf (270) is formed in a circular shape and has a relatively small area.

[0096] The shelf (270) has four shelf guide protrusions (278), which is different from the shelf (170) of the first embodiment having two shelf guide protrusions (180). The four shelf guide protrusions (278) are inserted into the straight guide grooves (212) of the base (210) to prevent the shelf (270) from rotating while moving in a straight line. For example, when a user pulls the shelf (270) by holding the two ends instead of the center, the shelf (270) can rotate around the shelf guide protrusions (278), but the four shelf guide protrusions (278) prevent the shelf (270) from rotating, thereby facilitating smooth straight line movement.

[0097] The shelf guide protrusion (278) is inserted into the rotation guide groove (214) to guide the rotation of the shelf (270).

[0098] The base (210) according to the second embodiment has the same configuration as the base (110) according to the first embodiment, but differs in that the rotation guide groove (214) has a diameter slightly larger than the width of the pair of straight guide grooves (212). This is to enable the four shelf guide protrusions (278) formed on the shelf (270) to rotate smoothly within the rotation guide groove (214).

[0099]

[0100] Fig. 11 is an exploded perspective view illustrating a rotary lathe (300) according to a third embodiment of the present invention. Fig. 12 is a drawing illustrating an upper surface of a base (310) and a lower surface of a shelf (370) in the rotary lathe (300) illustrated in Fig. 11. Fig. 13 is a perspective view illustrating a state of a bearing (350) with respect to the base (310) when the shelf (370) in the rotary lathe (300) illustrated in Fig. 11 is pulled out forward. Fig. 14 is a perspective view illustrating a lower surface of a coupling member (360) in the rotary lathe (300) illustrated in Fig. 11, and Fig. 15 is a perspective view illustrating a lower surface of a shelf (370) and a coupling member (360) in the rotary lathe (300) illustrated in Fig. 11. FIG. 16 is a front view illustrating an adsorption member (390) of the rotary lathe (300) illustrated in FIG. 11, and FIG. 17 is a cross-sectional view illustrating a bearing (350) of the rotary lathe (300) illustrated in FIG. 11.

[0101] The rotary lathe according to the third embodiment of the present invention has many features in common with the rotary lathes according to the first and second embodiments described above. The following description will focus on the differences of the rotary lathe (300) according to the third embodiment. The features described in connection with the first and second embodiments may be applied to the third embodiment, and similarly, the features described in connection with the third embodiment may be applied to the first and / or second embodiments.

[0102] Referring to FIGS. 11 to 17, the rotary lathe (300) according to the present embodiment is characterized in that the lathe (370) can move linearly and rotate, and in particular, the lathe (370) does not rotate during linear movement. The rotary lathe (300) according to the present embodiment largely includes a base (310), a bearing (350), a connecting member (360), and a lathe (370).

[0103] In the rotary lathe (100) according to the first embodiment described above, the second end (120) of the upper guide groove (116) is located within the upper surface (112) of the base (110). The second end (120) of the upper guide groove (116) has an arc shape, and is a semicircle shape having the same curvature as the curvature of the bearing (150). However, the center of the circle including the semicircle of the second end (120) does not coincide with the actual rotation center of the lathe (170).

[0104] That is, the shelf (170) rotates around the second end (128) of the moving hole (124) after being pulled forward, and the bearing (150) rotates while contacting the second end (120) of the upper guide groove (116), but the second end (128) of the moving hole (124) is not at the center of a circle that includes a semicircle formed by the second end (120) of the upper guide groove (116). This ultimately means that the rotation center of the shelf (170) and the rotation center of the bearing (150) are not aligned. If the shelf (170) rotates while the rotation centers of the shelf (170) and the rotation centers of the bearing (150) are not aligned, the rotation of the shelf (170) is not natural, which reduces the usability when rotating the shelf (170), generates noise, and there is a risk that the bearing (150) may be more easily worn or damaged. The rotary lathe (300) according to the present embodiment is designed to solve such problems and further increase convenience of use.

[0105] Fig. 12 illustrates the upper surface of the base (310) and the lower surface of the shelf (370) of the rotary lathe (300) according to one embodiment of the present invention. Similar to the above-described embodiment, in this embodiment, an upper guide groove (316) may be formed on the upper surface (312) of the base (310), and an upper guide area (322) may be formed therein. A moving hole (324) extending between a first end (326) and a second end (328) may be formed on the base (310), and a linear guide groove (330) and a rotary guide groove (332) may be formed, which may be formed in the upper guide area (322).

[0106] In the base (310) of the rotary lathe (300) according to the present embodiment, the upper guide groove (316) has a first end (318) within the upper surface (312) of the base (310), but does not have a second end. That is, the upper guide groove (316) may be opened forward from the front side of the base (310), and thus, the second end as in the first embodiment may not be formed.

[0107] The upper guide groove (316) on the front side of the base (310) may not form a semicircle, but may still form an arc shape, and the arc may have the same curvature as the curvature of the bearing (350). Here, the center of a circle including the arc formed by the front side of the upper guide groove (316) may coincide with the position of the second end (328) of the moving hole (324).

[0108]

[0109] Referring to FIG. 12, the base (310) of the rotary lathe (300) according to the present embodiment may further include guide walls (321, 323). The guide walls (321, 323) may protrude to a position higher than the upper surface (312) of the base (310) or the upper surface of the upper guide region (322).

[0110] For example, the first guide wall (321) may protrude upward from the edge of the upper guide groove (316). The first guide wall (321) may protrude above the upper surface (312) from an outer edge other than the open front side of the upper guide groove (316). The first guide wall (321) may extend over the entire or part of the edge of the upper guide groove (316).

[0111] The second guide wall (323) may also protrude upward from the edge of the upper guide groove (316), and may be formed in a portion corresponding to the inner side of the upper guide groove (316). For example, the second guide wall (323) may be formed in a portion corresponding to the edge of the upper guide groove (316) among the upper guide areas (322), and may protrude above the upper guide areas (322). The second guide wall (323) may be formed over the entire upper guide area (322), but may also be formed only in a partial area including the front side or other portions of the upper guide area (322), as in FIG. 12.

[0112] When the shelf (370) moves forward and backward, the guide walls (321, 323) can more effectively prevent the bearing (350) from going out of a predetermined range. That is, when the shelf (370) is retracted backward for storage, the first guide wall (321) formed along the outer edge of the upper guide groove (316), the portion located at the rear side of the upper guide groove (316), and the second guide wall (323) formed at the front side of the upper guide area (322) can restrict the bearing (350) from going out of the upper guide groove (316) from the rear side.

[0113] When the shelf (370) is pulled out forward for use, the portion of the first guide wall (321) formed along the outer edge of the upper guide groove (316), located at the front side of the upper guide groove (316), can restrict the bearing (350) from leaving the upper guide groove (316) from the front side. As shown in FIG. 13, when the shelf (370) is pulled out forward and positioned in a rotatable position, a portion of the bearing (350) protrudes through the open front side of the upper guide groove (316) and is positioned forward of the front edge of the base (310). As described above, in this arrangement, the rotation center of the bearing (350) is aligned with the rotation center of the shelf (370), allowing it to rotate naturally, and problems such as uncomfortable usability, noise, and wear can be resolved.

[0114]

[0115] Similar to the second guide wall (323) formed on the front side of the upper guide area (322) in the example illustrated in Fig. 12, a guide wall (323) may also be formed on the rear side of the upper guide area (322), but a guide wall (331) formed around the straight guide groove (330) of the upper guide area (322) may also perform this role.

[0116] Referring to Fig. 12, guide walls (331, 333, 335) may be formed around the linear guide groove (330) and the rotary guide groove (332) in the base (310) of the rotary lathe (300) according to the present embodiment. The guide walls (331, 333, 335) may protrude to a position higher than the upper surface of the upper guide area (322).

[0117] For example, the third guide wall (331) may be formed along the edge of the straight guide groove (330), and the fourth guide wall (333) and the fifth guide wall (335) may be formed along the inner edge and the outer edge of the rotational guide groove (332), respectively. Just as the first and second guide walls (321, 323) limit the bearing (350) within a specified range, the third to fifth guide walls (331, 333, 335) can limit the shelf guide protrusion (380) within a specified range to prevent it from being separated from the straight guide groove (330) and the rotational guide groove (332).

[0118]

[0119] Referring to FIGS. 12 and 15 , the shelf (370) according to the present embodiment may further include a limiting protrusion (384). The limiting protrusion (384) may protrude downward at at least one position on the front and rear sides of the shelf (370) and may extend downward to a height capable of pressing the side surface of the bearing (350). In the example illustrated in FIGS. 12 and 15 , the limiting protrusion (384) protruding downward is formed at one position on each of the front and rear sides of the shelf (370). Of course, since the shelf (370) can be rotated 180 degrees after being withdrawn and then stored again, the positions of the front and rear sides of the shelf (370) may be changed as needed.

[0120] If some components that limit the range of movement of the bearing (350) are worn out or excessive force is applied when withdrawing the shelf (370), the bearing (350) may unintentionally move out of its original position, and the bearing (350) may not move together when the shelf (370) is stored backward. In this case, the limiting protrusion (384) formed on the shelf (370) can push the bearing (350) backward while contacting it, thereby returning the bearing (350) to its original position. Since the bearing (350) is always located below the shelf (370), even if the limiting protrusions (384) are formed on the front and rear sides of the shelf (370), the movement and rotation of the bearing (350) are not impeded.

[0121]

[0122] Similar to the above-described embodiment, in this embodiment, the shelf (370) may have a frame (372) formed at its edge and a center hole (374) formed at its center. A lower guide groove (376) and a lower guide area (378) may be formed around the center hole (374) on the lower surface (371) of the shelf (370) so as not to impede movement and rotation of the shelf (370).

[0123] In the description of the first embodiment of the present invention, it was mentioned that the shelf guide protrusion (180) for guiding the movement and rotation of the shelf (170) was formed on the lower surface of the shelf (170). However, as in the embodiment illustrated in FIGS. 14 and 15, the shelf guide protrusion (380) may be formed on the connecting member (360). To this end, the shelf (370) according to the embodiment illustrated in FIGS. 12 and 15 may have a center hole (374) formed to be larger in size than the shelf (170) according to the first embodiment.

[0124] In the rotary lathe (100) according to the first embodiment described above, the shelf guide protrusion (180) is formed on the lower surface of the lathe (170) as a part of the lathe (170). If the base (110) and the lathe (170) are made of the same material, the lathe guide protrusion (180) is also formed of the same material as the base (110). However, wear may occur due to friction as components of the same material continuously contact and move. If the end of the lathe guide protrusion (180) made as a part of the lathe (170) wears out due to long-term use and the lower surface of the straight guide groove (130) wears out, the lathe (170) cannot move smoothly. The rotary lathe (300) according to the present embodiment is designed to solve such problems and further increase convenience of use and durability.

[0125] Referring to FIG. 14, the coupling member (360) according to the present embodiment may include a head (362) and a hook body (364), and may further include a shelf guide protrusion (380). That is, in the present embodiment, the shelf guide protrusion (380) is not formed as a part of the shelf (370), but as a part of the coupling member (360), so that the coupling member (360) may be coupled to the center hole (374) of the shelf (370) and may be integrated with the shelf (370). The shelf guide protrusion (380) may protrude downward from the lower surface of the head (362) at a position away from the hook body (364). The role of the shelf guide protrusion (380) is substantially the same as the shelf guide protrusion (180) of the above-described embodiment.

[0126] Since the shelf guide protrusion (380) is formed as a part of the connecting member (360) rather than the shelf (370), the material of the shelf guide protrusion (380) can be different from the materials of the base (310) and the shelf (370). For example, when the material of the base (310) is manufactured from a PC (polycarbonate) or SAN (styrene acrylonitrile) series synthetic resin, the connecting member (360) and the shelf guide protrusion (380) can be manufactured from a POM (polyoxymethylene) series synthetic resin, also referred to as acetal or polyacetal. The POM series resin is advantageous in implementing a smooth surface, and thus can reduce friction between the shelf guide protrusion (380) and the base (310). In addition, even if the shelf guide protrusion (380) is worn out due to long-term use, unlike the first embodiment, the rotating shelf (300) can be repaired by replacing only the connecting member (360) without having to replace the entire shelf (370).

[0127]

[0128] Referring to Fig. 14, in the connecting member (360) according to the present embodiment, a cut portion (366) and a flat portion (369) are formed in the engaging body (364). The cut portion (366) is formed in the engaging body (364) along the front-back direction, and as a result, the engaging body (364) can contract in the left-right direction, thereby allowing it to smoothly pass through the moving hole (324) along the front-back direction.

[0129] Meanwhile, the flat portion (369) is formed in a shape in which the engaging body (364) is partially cut to form a flat plane, and is formed on the left and right sides of the concave central portion (367) of the engaging body (364). The central portion (367) corresponds to a portion of the engaging body (364) located within the moving hole (324), and the flat portion (369) of it corresponds to a portion facing both sides of the moving hole (324). The distance between the flat portions (369) on both sides of the central portion (367) can correspond to the width of the moving hole (324). That is, in the part where the flat portion (369) is not formed, the central portion (367) of the hook body (364) can also be formed to be larger than the width of the moving hole (324), and thus, the central portion (367) of the hook body (364) can pass through the moving hole (324) only when the flat portions (369) on both sides of the hook body (364) are properly aligned to face the left and right. In this way, the flat portion (369) of the hook body (364) can help align the connecting member (360) and the shelf (370) in the correct orientation together with the shelf guide protrusion (380).

[0130] The cylindrical portion (368) of the central portion (367) of the hook body (364), excluding the flat portion (369), may have an arc-shaped cross-section. Therefore, when the shelf (370) is pulled out as far forward as possible and rotated, the cylindrical portion (368) of the central portion (367) contacts the second end (328) of the moving hole (324) to guide the rotation. That is, when the shelf (370) moves in a straight line, the flat portion (369) of the hook body (364) guides the linear movement along the linear guide groove (330), and when the shelf (370) rotates, the cylindrical portion (368) of the hook body (364) guides the rotational movement along the rotational guide groove (332).

[0131]

[0132] Referring to Fig. 16, the adsorption member (390) according to the present embodiment comprises an adsorption portion (392), a coupling portion (394), an upper catch (396), and an operating portion (398). The adsorption member (390) can be used to fix the base (310) to a separate surface as described above.

[0133] The adsorption portion (392) is the portion where the adsorption of the adsorption member (390) actually occurs. The adsorption portion (392) may be formed of a flexible material and configured to be elastically deformable. When the adsorption member (390) is pressed downward by an external force, the adsorption portion (392) may be elastically deformed, thereby forming a vacuum inside the adsorption portion (392). The vacuum may be maintained as the adsorption portion (392) tends to return to its original shape, thereby maintaining the adsorption member (390) attached to the surface of an external object.

[0134] The connecting portion (394) and the upper catch (396) are used to connect the suction member (390) to the base (310). When the suction member (390) moves upward from the bottom of the base (310) and the connecting portion (394) and the upper catch (396) are inserted into the connecting hole (344) of the base (310), the lower portion of the upper catch (396) is caught on the upper surface (312) of the base (310) around the connecting hole (344), so that the suction member (390) is firmly fixed to the base (310).

[0135] The upper catch (396) also protrudes above the upper surface (312) of the base (310) and functions as the upper catch (138) of the first embodiment described above. That is, a lower catch (382) may be formed on the lower surface (371) of the shelf (370), and when the shelf (370) moves or rotates, the lower catch (382) passes over the upper catch (396), allowing the user to sense the movement or rotation of the shelf (370) by touch.

[0136] In Fig. 12, two coupling holes (344) are formed on the rear side of the base (310), but the coupling holes (344) may also be formed on the front side or other locations of the base (310). In addition to the coupling holes (344) for coupling the suction member (390), the base (310) of the rotary lathe (300) according to one embodiment of the present invention may also have coupling holes (342) for fastening members (not shown) such as screws or bolts. Even when a fastening member (not shown) is used, the suction member (390) may be coupled to the coupling holes (344) or a separate member including only the upper catch (396) may be coupled so that the upper catch (396) is formed at the corresponding location.

[0137] The operating portion (398) may extend in a predetermined direction from the suction portion (392) and may extend to a length such that its end is positioned beyond the edge of the base (310). When a user wishes to detach the suction member (390) attached to a floor surface or the like, the user may release the suction member (390) by holding the operating portion (398) that is not covered by the base (310) and applying force. The operating portion (398) may be provided with a grip portion (399) extending upwards to enable the user to grip it more easily.

[0138]

[0139] Referring to FIG. 17, a bearing (350) according to the present embodiment may include a ring-shaped body (354) and a plurality of balls (352) inserted into the body (354). The bearing (350) may further include a rim protrusion (356) protruding from at least one position on the upper and lower portions of the body (354). The rim protrusion (356) formed on the upper portion of the body (354) may protrude upward, and the rim protrusion (356) formed on the lower portion of the body (354) may protrude downward.

[0140] In a preferred embodiment, the flange projection (356) may be formed in an annular shape along the inner and outer edges of the body (354) at the upper portion of the body (354), and may also be formed in an annular shape along the inner and outer edges of the body (354) at the lower portion of the body (354). This shape allows the body (354) of the bearing (350) to form a kind of rib shape, thereby increasing structural strength and maintaining flatness. This structure is particularly important when, in the present embodiment, a portion of the bearing (350) is located forward of the front edge of the base (310) and is not supported by the base (310).

[0141] Although the present invention has been described above with reference to one embodiment, it will be understood by those skilled in the art that various modifications and changes can be made to the present invention without departing from the spirit and scope of the present invention as set forth in the claims below.

Claims

1. Base; A shelf capable of linear movement and rotation only at specific positions relative to the above base; and A rotary lathe comprising a coupling member that movably and rotatably couples the lathe to the base.

2. In paragraph 1, A rotary lathe characterized in that a bearing is interposed between the base and the shelf, and the bearing facilitates linear movement and rotation of the shelf.

3. In paragraph 2, A rotary lathe characterized in that the base has an upper guide groove formed therein to limit the area in which the bearing can move.

4. In paragraph 2, A rotary lathe characterized in that the lathe has a lower guide groove formed therein to limit the area in which the bearing can move.

5. In paragraph 2, A rotary lathe characterized in that the bearing has a ring-shaped body, and a plurality of balls are rotatably provided in the body.

6. In paragraph 3, A rotary lathe characterized in that an upper guide area is formed inside the upper guide groove, and the upper guide area protrudes upward compared to the lower surface of the upper guide groove.

7. In paragraph 4, A rotary lathe characterized in that a lower guide area is formed inside the lower guide groove, and the lower guide area protrudes downward compared to the upper surface of the lower guide groove.

8. In paragraph 6, The upper guide area has a moving hole that guides the linear movement of the connecting member, a linear guide groove formed in a straight line on both sides of the moving hole to guide the linear movement of the shelf, and an arc-shaped rotation guide groove that is connected to each end of the linear guide groove. A rotary lathe characterized in that at least one of the shelf and the connecting member has a shelf guide projection inserted into the linear guide groove and the rotary guide groove.

9. In paragraph 8, The above rotation guide groove is formed by a rotation guide protrusion having a circular shape, A rotary lathe characterized in that an entry step is formed between the straight guide groove and the rotational guide groove, and the entry step has a curved shape.

10. In paragraph 8, A rotary lathe characterized in that the front side of the upper guide groove is formed in the shape of an arc centered on the front end of the moving hole.

11. In paragraph 8, A rotary lathe characterized in that when the lathe is pulled forward and placed in a rotatable position, a portion of the bearing is located forward of the front edge of the base.

12. In paragraph 8, A rotary lathe characterized in that the above-mentioned shelf guide protrusions are formed in two or four.

13. In paragraph 3, A rotary lathe characterized in that the base has a guide wall formed thereon that protrudes upward from the edge of the upper guide groove.

14. In paragraph 6, A rotary lathe characterized in that a guide wall protruding upward from the edge of the upper guide groove is formed in the upper guide area.

15. In paragraph 1, A rotary lathe, characterized in that the above-mentioned connecting member has a head portion that is connected to the shelf and a hook body that is connected to the base, and a cut portion is formed in the hook body.

16. In paragraph 1, A rotary lathe characterized in that the lathe includes a limit projection protruding downward at at least one position on the front and rear sides thereof.

17. In paragraph 1, A rotary lathe characterized in that the base has an upper catch and the shelf has a lower catch that can go over the upper catch.

18. In paragraph 17, A rotary lathe, characterized in that the base includes a suction member, and the upper hanging projection is formed on the upper portion of the suction member.

Images