Support receiver and support structure using the same

Abstract

The present invention provides a support receiver that not only has a small number of parts and assembly steps but also eliminates the risk of losing parts, and a support structure using the same. [Solution] The support receiving device 20 has a cylindrical body 30 that is attached to a mounting hole 7 in a base material 6 and supports a supported device 10, and is configured to include an attachment means 36 that is provided on the outer surface of the cylindrical body 30 and is attached to the inner surface of the mounting hole 7 in the base material 6, and at least one elastic piece 38 that is cut out by a slit 37 provided in the cylindrical body 30 and has a locking claw portion 39 on its inner surface to prevent the supported device 10 from coming loose.

Description

[Technical Field]

[0001] The present invention is a support receiver for supporting an angle-adjustable metal fitting used, for example, in a headrest of a sofa. [Background technology]

[0002] Conventionally, an example of a support receiver is a headrest support device that is provided above the seat back of a vehicle seat, holds a headrest 8 that supports the head of a seated occupant, and allows the height of the headrest to be adjusted in the up-down direction. This headrest support device is composed of two stay guides 1, 1 into which two headrest stays 81, 81 provided on the headrest 8 fit and which serve to hold the two headrest stays 81, 81 in predetermined positions, strip-shaped stay pressing portions 15, 15 formed in part of the axial direction of each cylindrical portion 11 that forms these stay guides 1, 1, and retaining clips 2, 2 that are provided on the cylindrical portion including these stay pressing portions 15, 15 and operate to press the stay pressing portions 15, 15 toward the inner surface (see Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2012-254648 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the headrest support device, a separate retaining clip 2 needs to be attached to the cylindrical portion 11 in order to prevent the two headrest stays 81 of the headrest 8 from coming off. This not only increases the number of parts and the number of assembly steps, but also poses the problem that the retaining clip 2, which is small and has a strong spring force, is easily lost. In view of the above problems, the present invention aims to provide a support receiving device that not only has a small number of parts and assembly steps but also has no risk of losing parts, and a support structure using the same. [Means for solving the problem]

[0005] In order to solve the above problems, the support receiving device according to the present invention comprises: A support receiving device that is attached to a mounting hole of a base material and has a cylindrical body that supports a supported device, an attachment means provided on the outer peripheral surface of the cylindrical body and for attaching the cylindrical body to the inner peripheral surface of the attachment hole of the base material; At least one elastic piece is cut out by a slit provided in the cylindrical body and has an engaging claw portion provided on its inner circumferential surface to prevent the supported tool from coming off, The cylindrical body can be divided into a main body portion and a divided portion along an axial direction, The bridge portion of the divided portion elastically engages with the locking projection provided on the bottom surface of the main body portion, and the main body portion and the divided portion are integrated. It is in the composition. [Effects of the Invention]

[0006] According to the present invention, the elastic piece that can prevent the supported tool from slipping off is provided integrally with the cylindrical body, so the number of parts and assembly steps are reduced, improving productivity. Furthermore, since the elastic piece is provided integrally with the cylindrical body, there is no risk of the parts being scattered or lost.

[0007] Furthermore, according to the present invention, the molding operation of the cylindrical body becomes easier. Furthermore, according to the present invention, the strength of the cylindrical body is improved, making it less susceptible to breakage.

[0008] As an embodiment of the present invention, A rib provided at the upper end of the divided portion is engaged with the inner peripheral edge of the annular flange provided at the upper end of the main portion, and the main portion and the divided portion are integrated. This may also be configured as follows.

[0009] According to this embodiment, the positioning operation of the support receiver relative to the mounting hole of the base material can be performed easily and accurately.

[0010] In some embodiments of the invention, the attachment means may be at least one helical ridge. According to this embodiment, a support receiver that can be attached by screwing and has high holding strength can be obtained.

[0011] In some embodiments of the present invention, the attachment means may be a plurality of discontinuous annular ridges. According to this embodiment, a support receiver that can be attached by hammering and has high holding strength can be obtained.

[0012] In some embodiments of the present invention, the attachment means may be a plurality of discontinuous projections. According to this embodiment, a support receiver that is easy to install and has high holding strength can be obtained.

[0013] In an embodiment of the present invention, the attachment means may be an external thread onto which a nut can be threaded. According to this embodiment, a detachable support receiver is obtained.

[0014] In an embodiment of the present invention, the elastic piece may be cut out by a U-shaped slit provided in the cylindrical body. Of course, the direction of the slit can be selected as needed. According to this embodiment, a support receiver having an elastic piece with a desired spring force can be obtained.

[0015] As an embodiment of the present invention, the elastic pieces may be cut out along two linear slits provided in the cylindrical body. According to this embodiment, a support receiver having an elastic piece with a high spring force can be obtained.

[0016] In an embodiment of the present invention, the elastic piece may be cut out by an inverted T-shaped slit provided in the cylindrical body. According to this embodiment, a support receiver having an elastic piece with a large spring force can be obtained.

[0017] The support structure using the support receiver of the present invention is configured so that the support shaft of the supported device is inserted into the cylindrical body of the support receiver described above, which is attached to the mounting hole of the base material, and the support shaft is prevented from coming loose by the locking claw portion provided on the inner surface of the elastic piece of the cylindrical body.

[0018] According to the support structure using the support receiving device of the present invention, an elastic piece that prevents the supported device from coming loose is integrally formed on the cylindrical body, thereby reducing the number of parts and assembly labor, and improving the workability of the assembly work. Furthermore, since the elastic piece is provided integrally with the cylindrical body, there is no risk of the parts being scattered and lost.

[0019] In another embodiment of the present invention, the supported device may be an angle-adjustable fitting. According to this embodiment, the angle adjustment fitting can be easily attached, and there is no risk of losing parts. [Brief explanation of the drawings]

[0020] [Figure 1] FIG. 2 is a perspective view for explaining how to use the support receiver according to the first embodiment. [Figure 2] FIG. 2 is a partially enlarged perspective view of FIG. [Figure 3] FIG. 2 is a perspective view of the support receiver shown in FIG. 1, seen from above. [Figure 4] 2 is a perspective view of the support receiver shown in FIG. 1 as seen from below. FIG. [Figure 5] FIG. 2 is an exploded perspective view of the support receiver shown in FIG. 1. [Figure 6] FIG. 2 is a vertical cross-sectional perspective view of the support receiver shown in FIG. [Figure 7] FIG. 2 is a front view of the support receiver shown in FIG. [Figure 8] FIG. 2 is a left side view of the support receiver shown in FIG. [Figure 9] FIG. 2 is a right side view of the support receiver shown in FIG. [Figure 10] FIG. 2 is a rear view of the support receiver shown in FIG. [Figure 11]FIG. 2 is a plan view of the support receiver shown in FIG. [Figure 12] 2 is a bottom view of the support receiver shown in FIG. 1. FIG. [Figure 13] 5A and 5B are cross-sectional views for explaining a method of inserting a support shaft into a support receiver according to the first embodiment. [Figure 14] FIG. 14 is a partially enlarged cross-sectional view of FIG. [Figure 15] FIG. 3 is a cross-sectional view showing a state in which a support shaft is inserted into the support receiver according to the first embodiment. [Figure 16] FIG. 16 is a partially enlarged cross-sectional view of FIG. [Figure 17] FIG. 10 is a perspective view of a support receiver according to a second embodiment, seen from above. [Figure 18] 18 is a perspective view of the support receiver shown in FIG. 17 as seen from below. FIG. [Figure 19] FIG. 18 is a front view of the support receiver shown in FIG. [Figure 20] FIG. 18 is a right side view of the support receiver shown in FIG. [Figure 21] FIG. 11 is a perspective view of a support receiver according to a third embodiment, as viewed from above. [Figure 22] 22 is a perspective view of the support receiver shown in FIG. 21 as seen from below. FIG. [Figure 23] FIG. 22 is a front view of the support receiver shown in FIG. 21. [Figure 24] 22 is a right side view of the support receiver shown in FIG. 21. [Figure 25] FIG. 10 is a perspective view of a support receiver according to a fourth embodiment, seen from above. [Figure 26] 26 is a perspective view of the support receiver shown in FIG. 25 as seen from below. FIG. [Figure 27] FIG. 26 is a front view of the support receiver shown in FIG. 25. [Figure 28] FIG. 26 is a right side view of the support receiver shown in FIG. 25. [Figure 29] FIG. 11 is a perspective view of a support receiver according to a fifth embodiment, as viewed from above. [Figure 30] FIG. 30 is a perspective view of the support receiver shown in FIG. 29 as seen from below. [Figure 31] FIG. 30 is a front view of the support receiver shown in FIG. 29. [Figure 32] FIG. 30 is a right side view of the support receiver shown in FIG. 29. [Figure 33] FIG. 13 is a perspective view of a support receiver according to a sixth embodiment, seen from above. [Figure 34] FIG. 34 is a perspective view of the support receiver shown in FIG. 33 as viewed from below. [Figure 35] FIG. 34 is a front view of the support receiver shown in FIG. 33. [Figure 36] FIG. 34 is a right side view of the support receiver shown in FIG. 33. [Figure 37] FIG. 13 is a perspective view for explaining how to use the support receiver according to the seventh embodiment. [Figure 38] FIG. 38 is a partially enlarged perspective view of FIG. 37. [Figure 39] FIG. 38 is a perspective view of the support receiver shown in FIG. 37 as seen from above. [Figure 40] 38 is a perspective view of the support receiver shown in FIG. 37 as seen from below. FIG. [Figure 41] FIG. 38 is an exploded perspective view of the support receiver shown in FIG. 37. [Figure 42] FIG. 38 is a longitudinal cross-sectional view of the support receiver shown in FIG. 37. [Figure 43] FIG. 38 is a front view of the support receiver shown in FIG. 37. [Figure 44] FIG. 38 is a left side view of the support receiver shown in FIG. 37. [Figure 45] FIG. 38 is a right side view of the support receiver shown in FIG. 37. [Figure 46] FIG. 38 is a rear view of the support receiver shown in FIG. 37. [Figure 47] FIG. 38 is a plan view of the support receiver shown in FIG. 37. [Figure 48] FIG. 38 is a bottom view of the support receiver shown in FIG. 37. [Figure 49] FIG. 13 is a perspective view of a support receiver according to an eighth embodiment, seen from above. [Figure 50] FIG. 50 is a perspective view of the support receiver shown in FIG. 49, seen from below. [Figure 51]FIG. 50 is an exploded perspective view of the support receiver shown in FIG. 49. [Figure 52] FIG. 50 is a front view of the support receiver shown in FIG. 49. [Figure 53] FIG. 50 is a right side view of the support receiver shown in FIG. 49. [Figure 54] FIG. 13 is a perspective view of a support receiver according to a ninth embodiment, seen from above. [Figure 55] FIG. 55 is a right side view of the support receiver shown in FIG. 54. [Figure 56] FIG. 55 is a longitudinal cross-sectional view of the support receiver shown in FIG. 54. [Figure 57] FIG. 20 is a perspective view for explaining how to use the support receiver according to the tenth embodiment. [Figure 58] FIG. 58 is a partially enlarged perspective view of FIG. 57. [Figure 59] FIG. 58 is a front partial cross-sectional view of FIG. 57. [Figure 60] FIG. 58 is a perspective view of the support receiver shown in FIG. 57 as seen from above. [Figure 61] FIG. 58 is a perspective view of the support receiver shown in FIG. 57 as seen from below. [Figure 62] FIG. 58 is an exploded perspective view of the support receiver shown in FIG. 57. [Figure 63] FIG. 58 is a longitudinal cross-sectional view of the support receiver shown in FIG. 57. [Figure 64] FIG. 58 is a front view of the support receiver alone shown in FIG. 57. [Figure 65] FIG. 58 is a left side view of the support receiver alone shown in FIG. 57. [Figure 66] FIG. 58 is a right side view of the support receiver alone shown in FIG. 57. [Figure 67] FIG. 58 is a rear view of the support receiver alone shown in FIG. 57. [Figure 68] FIG. 58 is a plan view of the support receiver alone shown in FIG. 57. [Figure 69] FIG. 58 is a bottom view of the support receiver alone shown in FIG. 57. DETAILED DESCRIPTION OF THE INVENTION

[0021] The support receiver according to the present invention will be described with reference to the accompanying drawings of FIGS. The support receiver 20 according to the first embodiment is used to support the base plate 3 of the rotatable headrest 2 and the base plate 5 of the rotatable armrest 4 provided on the sofa 1, as shown in Figures 1 to 16.

[0022] 1 and 2, the support receiver 20 according to the present invention is screwed into and embedded in a mounting hole 7 provided in the base material 6 of the sofa 1, and supports the support shaft 11 of the angle-adjustable metal fitting 10. The angle-adjustable metal fitting 10 rotatably supports the base plate 3 of the headrest 2 and the base plate 5 of the armrest 4. The mounting hole 7 may be a bottomed hole or a through-hole.

[0023] 3 to 6, the support receiver 20 is composed of an annular flange 21 and a cylindrical body 30. The annular flange 21 is covered with a cover 22 of the same shape. The cover 22 may be attached as needed, but is not necessarily required.

[0024] As shown in Fig. 5, the cylindrical body 30 can be divided into two parts along the axial direction, and is composed of a main body 31 that is integral with the annular flange 21 and a divided part 32 that can be separated from the annular flange 21. A semicircular rib 33 provided on the upper end of the divided part 32 is engaged with the inner edge of the annular flange 21, and then the divided part 32 is pressed against the main body 31. As a result, as shown in Fig. 6, the bridge part 35 of the divided part 32 elastically engages with the engaging protrusion 34 of the main body 31, and the main body 31 and the divided part 32 become integrated. Although the cylindrical body 30 has a bottom surface, it is not necessarily required to have a bottom surface, and it may of course be perforated.

[0025] As shown in Figures 7 to 12, the cylindrical body 30 has a spiral ridge formed on the outer circumferential surface of its upper half, which serves as an attachment means 36. The main body 31 and the divided portion 32 each have a U-shaped slit 37 formed in their lower half, which forms a downward-facing elastic piece 38. The elastic piece 38 has a protruding locking claw 39 (see Figure 6) on the lower edge of its inner circumferential surface, which locks into an annular groove 12 of the support shaft 11 (described later) to prevent it from coming off. The locking claw portion 39 does not have to be a single protrusion, but may be a single projection or multiple projections. Furthermore, it is needless to say that the mounting means 36 and the elastic piece 38 may be arranged in the up-down positions reversed.

[0026] The support receiver 20 according to this embodiment is used, for example, when supporting an angle-adjusting metal fitting 10 that adjusts the angle of the base plate 3 of a headrest 2, as shown in FIGS. More specifically, the support receiver 20 is fixed to the mounting hole 7 by screwing it into the mounting hole 7 provided in the base material 6 of the sofa 1 and embedding it. Next, as shown in Figures 13 and 14, when the support shaft 11 of the angle-adjustable fitting 10 is inserted into the cylindrical body 30 of the support receiver 20, the elastic pieces 38 are pushed outward. By further pushing the support shaft 11 in, as shown in Figures 15 and 16, the locking claws 39 of the elastic pieces 38 engage with the annular grooves 12 provided on the outer circumferential surface of the support shaft 11, thereby preventing the support shaft 11 of the angle-adjustable fitting 10 from coming loose and supporting the angle-adjustable fitting 10. It should be noted that the base material 6 is not limited to wood, and may of course be made of other materials, such as metal or synthetic resin.

[0027] 17 to 20, the support receiver 20 according to the second embodiment has an upward elastic piece 38 formed in a U-shaped slit 37 provided in the lower half of the cylindrical body 30. The elastic piece 38 has a locking claw (not shown) protruding from the upper edge of its inner circumferential surface, which can engage with the annular groove 12 of the support shaft 11. It goes without saying that the cylindrical body 30 may be separable into a main body portion and a divided portion, as in the first embodiment described above. Other aspects are the same as those of the previously described embodiment, so the same parts are given the same numbers and the description thereof will be omitted.

[0028] 21 to 24, the support receiver 20 according to the third embodiment has a horizontally oriented elastic piece 38 formed in a U-shaped slit 37 provided in the lower half of a cylindrical body 30. The elastic piece 38 has a locking claw (not shown) protruding from its inner peripheral surface, for example, at the upper edge, lower edge, or free end, that can be locked into the annular groove 12 of the support shaft 11. It goes without saying that the cylindrical body 30 may be separable into a main body portion and a divided portion, as in the first embodiment described above. Other aspects are the same as those of the previously described embodiment, so the same parts are given the same numbers and the description thereof will be omitted.

[0029] 25 to 28, the support receiver 20 according to the fourth embodiment has two parallel linear slits 37 formed along the axial direction in the lower half of the cylindrical body 30 to form elastic pieces 38. The elastic pieces 38 have locking claws (not shown) protruding from their inner peripheral surface that can be locked into the annular groove 12 of the support shaft 11. It goes without saying that the cylindrical body 30 may be separable into a main body portion and a divided portion, as in the first embodiment described above. Other aspects are the same as those of the previously described embodiment, so the same parts are given the same numbers and the description thereof will be omitted.

[0030] 29 to 32, the support receiver according to the fifth embodiment has a pair of linear slits 37 formed in a diverging manner in the lower half of the cylindrical body 30 to form elastic pieces 38. The elastic pieces 38 have locking claws (not shown) protruding from their inner peripheral surface that can be locked into the annular groove 12 of the support shaft 11. It goes without saying that the cylindrical body 30 may be separable into a main body portion and a divided portion, as in the first embodiment described above. Other than that, it is the same as the embodiment described above, so the same parts are given the same numbers and the explanation is omitted.

[0031] 33 to 36, the support receiver according to the sixth embodiment has elastic pieces 38 formed by providing inverted T-shaped slits 37 in the lower half of the cylindrical body 30. In this embodiment, locking claws (not shown) that can be locked into the annular groove 12 of the support shaft 11 are formed on the inner circumferential surfaces of the corners of the elastic pieces 38, 38. It goes without saying that the cylindrical body 30 may be separable into a main body portion and a divided portion, as in the first embodiment described above. Other than that, it is the same as the embodiment described above, so the same parts are given the same numbers and the explanation is omitted.

[0032] The support receiving device 20 of the seventh embodiment is driven into and embedded in a mounting hole 7 provided in the base material 6 of the sofa 1, as shown in Figures 37 and 38, and supports the support shaft 11 of the angle adjustment fitting 10 for rotatably supporting the base plate 3 of the headrest 2 and the base plate 5 of the armrest 4. Furthermore, the support receiving device 20 of the seventh embodiment is almost the same as the first embodiment described above, as shown in Figures 39 to 48, except that an attachment means 36 consisting of a number of protrusions is provided at a predetermined pitch on the outer peripheral surface of the upper half of the cylindrical body 30. Other than that, it is almost the same as the first embodiment described above, so the same parts are given the same numbers and the explanation will be omitted.

[0033] As shown in Figures 49 to 53, the support receiving device 20 of the eighth embodiment is provided with an attachment means 36 on the outer peripheral surface of the upper half of the cylindrical body 30, in which a plurality of annular protrusions having an approximately triangular cross section are formed at a predetermined pitch. As shown in FIG. 51, the support receiver 20 according to this embodiment has a shape in which the annular flange portion 21 and the cylindrical body 30 can be separated into two parts along the axial direction. The rest is the same as in the above-described embodiment, so the same parts are given the same numbers and the description will be omitted.

[0034] As shown in Figures 54 to 56, the support receiving device 20 of the ninth embodiment has an external shape similar to that of the eighth embodiment, but differs in that the entire annular flange portion 21 and the cylindrical body 30 are molded as a single unit. The rest is the same as in the above-described embodiment, so the same parts are given the same numbers and the description will be omitted.

[0035] 57 to 59, the support receiver 20 according to the tenth embodiment is inserted into a through-hole 7 provided in the base material 6 of the sofa 1 and attached by screwing a nut 23 onto the attachment means 36 of the cylindrical body 30. The angle-adjustable fitting 10 is supported by inserting the support shaft 11 of the angle-adjustable fitting 10 into the cylindrical body 30 of the support receiver 20 and preventing it from coming loose.

[0036] 60 to 69, the support receiver 20 is composed of an annular flange 21 and a cylindrical body 30. The annular flange 21 is covered with a cover 22 of the same shape. The cover 22 may be attached as needed, but is not necessarily required.

[0037] As shown in Figure 62, the cylindrical body 30 can be divided into two parts along the axial direction, and is composed of a main body 31 that is integral with the annular flange 21, and a divided part 32. A semicircular rib 33 provided on the upper end of the divided part 32 is engaged with the inner edge of the annular flange 21, and the divided part 32 is pressed against the main body 31. Next, the bridge part 35 of the divided part 32 elastically engages with the engaging protrusion 34 of the main body 31, thereby forming a single body with the divided part 32. Although the cylindrical body 30 has a bottom surface, it is not necessarily required to have a bottom surface, and it may of course be perforated.

[0038] As shown in Figures 64 to 67, the cylindrical body 30 has a male thread formed on the outer circumferential surface of its upper half as an attachment means 36. A U-shaped slit 37 is provided in the lower half of each of the main body 31 and the divided portion 32, forming a downward-facing elastic piece 38. A locking claw 39 is protruded from the lower edge of the inner circumferential surface of the elastic piece 38, and locks into an annular groove 12 of the support shaft 11 (described later) to prevent it from coming off. The locking claw 39 does not have to be a single protrusion, and may be one protrusion or multiple protrusions. Furthermore, it is needless to say that the mounting means 36 and the elastic piece 38 may be arranged in the up-down positions reversed.

[0039] To use the support receiver 20 according to this embodiment, as shown in Figure 59, insert the cylindrical body 30 of the support receiver 20 into the mounting hole 7 of the sofa 1 and secure it by screwing the nut 23 onto the male thread that is the protruding mounting means 36. Next, insert the support shaft 11 of the angle-adjustable fitting 10 into the cylindrical body 30 to prevent it from coming loose. Other than that, it is the same as the first embodiment described above, so the same parts are given the same numbers and the explanation will be omitted.

[0040] Various embodiments have been described in detail above with reference to the drawings, and various aspects of the present invention will be described below. Note that in the following description, reference numerals will also be used as examples.

[0041] The support receiver 20 of the first aspect according to the present invention is attached to the attachment hole 7 of the base material 6 and has a cylindrical body 30 that supports the supported device 10, an attachment means 36 provided on the outer peripheral surface of the cylindrical body 30 and for attaching to the inner peripheral surface of the attachment hole 7 of the base material 6; At least one elastic piece 38 is cut out at a slit 37 provided in the cylindrical body 30 and has a locking claw portion 39 on its inner circumferential surface for preventing the supported device 10 from slipping out; The configuration is provided with the above.

[0042] The support receiver 20 of the second aspect according to the present invention is configured such that an annular flange 21 is provided at the upper end of the cylindrical body 30 in the support receiver 20 of the first aspect.

[0043] The support receiving device 20 of the third aspect of the present invention is configured such that the cylindrical body 30 of the support receiving device 20 described in either the first or second aspect can be divided along the axial direction.

[0044] The support receiver 20 of a fourth aspect according to the present invention is configured such that the cylindrical body 30 in the support receiver 20 described in any one of the first to third aspects has a bottom surface.

[0045] The support receiving device 20 of the fifth aspect of the present invention is configured such that the attachment means 36 in the support receiving device 20 described in any one of the first to fourth aspects is at least one spiral ridge.

[0046] The support receiving device 20 of the sixth aspect of the present invention is configured such that the mounting means 36 in the support receiving device 20 described in any one of the first to fourth aspects is a plurality of discontinuous annular ridges.

[0047] The support receiver 20 of the seventh aspect of the present invention is configured such that the attachment means 36 in the support receiver 20 described in any one of the first to fourth aspects is a plurality of discontinuous protrusions.

[0048] The support receiving device 20 of the eighth aspect of the present invention is configured such that, in the support receiving device 20 described in any one of the first to fourth aspects, the mounting means 36 is a male screw into which the nut 23 can be screwed.

[0049] The support receiving device 20 of the ninth aspect of the present invention is configured such that, in the support receiving device 20 described in any one of the first to eighth aspects, the elastic piece 38 is cut out by a U-shaped slit 37 provided in the cylindrical body 30.

[0050] The support receiving device 20 of the tenth aspect of the present invention is configured such that, in the support receiving device 20 described in any one of the first to eighth aspects, the elastic pieces 38 are cut out by two linear slits 37 provided in the cylindrical body 30.

[0051] The support receiving device 20 of the eleventh aspect of the present invention is configured such that, in the support receiving device 20 described in any one of the first to eighth aspects, the elastic piece 38 is cut out by an inverted T-shaped slit 37 provided in the cylindrical body 30.

[0052] A support structure using a support receiving device 20 described in any one of the first to eleventh embodiments of the present invention is configured such that the support shaft 11 of the supported device 10 is inserted into the cylindrical body 30 of the support receiving device 20 described in any one of the first to eleventh embodiments attached to the mounting hole 7 of the base material 6, and the support shaft 11 is prevented from coming loose by the locking claw portion 39 of the elastic piece 38 provided on the cylindrical body 30.

[0053] A support structure using a support receiver 20 according to a thirteenth aspect of the present invention is configured such that the supported device 10 is an angle-adjustable metal fitting. [Industrial Applicability]

[0054] The support receiver of the present invention is not limited to sofas, and may of course be applied to other furniture, such as chairs, tables, desks, and storage stands. Furthermore, it goes without saying that the support receiver of the present invention may be applied to other devices, such as dental treatment machines, outdoor equipment, interior parts of automobiles, test equipment, and office equipment. [Explanation of symbols]

[0055] 1 sofa 2 headrests 3. Circuit Board 4 armrests 5. Substrate 6 Base material 7 Mounting holes 10 Angle adjustment bracket (supported device) 11 Spindle 12 Annular groove 20 Support receiver 21 Annular flange 22 Cover 23 Nut 30 Cylindrical body 31 Main body 32 Division 33 Ribs 34 Locking protrusion 35 Crosslinked part 36 Mounting means 37 Slit 38 Elastic piece 39 Locking claw

Claims

1. A support receiving device that is attached to a mounting hole of a base material and has a cylindrical body that supports a supported device, an attachment means provided on the outer peripheral surface of the cylindrical body and for attaching the cylindrical body to the inner peripheral surface of the attachment hole of the base material; At least one elastic piece cut out by a slit provided in the cylindrical body and having a locking claw portion provided on an inner circumferential surface to prevent the supported tool from coming off; A support receiver comprising:

2. 2. The support receiver according to claim 1, wherein the cylindrical body has an annular flange at its upper end.

3. 2. The support receiver according to claim 1, wherein the cylindrical body is separable along the axial direction.

4. 2. The support receiver according to claim 1, wherein the cylindrical body has a bottom surface.

5. 2. The support receiver of claim 1, wherein the attachment means is at least one helical ridge.

6. 2. The support receiver of claim 1, wherein the attachment means is a plurality of discontinuous annular ridges.

7. 2. The support receiver of claim 1, wherein the attachment means is a plurality of discontinuous projections.

8. 2. The support receiver according to claim 1, wherein the attachment means is a male thread onto which a nut can be threaded.

9. 2. The support receiver according to claim 1, wherein the elastic piece is cut out by a U-shaped slit provided in the cylindrical body.

10. 2. The support receiver according to claim 1, wherein the elastic pieces are cut out along two linear slits provided in the cylindrical body.

11. 2. The support receiver according to claim 1, wherein the elastic piece is cut out by an inverted T-shaped slit provided in the cylindrical body.

12. A support structure using a support receiver, characterized in that by inserting the support shaft of the supported device into the cylindrical body of the support receiver described in any one of claims 1 to 11 attached to a mounting hole in a base material, the support shaft is prevented from coming out by a locking claw portion provided on the inner surface of the elastic piece of the cylindrical body.

13. 13. A support structure using a support receiver according to claim 12, wherein the supported device is an angle-adjustable metal fitting.

Images