Chair

Abstract

This application provides a chair, including a chair body and a support leg that can be connected to the chair body. One of the lower part of the chair body and the upper part of the support leg is provided with a mounting part, and the other is provided with a plug-in part. The plug-in part can be plugged into the mounting part along the plug-in direction to install the support leg to the chair body. The inner surface of the circumferential sidewall of the mounting part is provided with a fastening rib protruding inward. When the plug-in part is plugged into the mounting part, the fastening rib undergoes elastic deformation and abuts against the circumferential sidewall of the mounting part, thereby securely installing the support leg to the chair body.

Description

Technical Field

[0001] This application designs a chair connection structure and a chair including the chair connection structure. Prior Technology

[0002] Children's indoor products facilitate children's indoor activities and generally include high chairs, chair frames, rocking chairs, and bassinets. High chairs typically consist of the chair body and supporting legs underneath. In some environments, the chair needs to be made of specific materials, such as wood, to match the style of the furniture. One current issue is that supporting legs made of wood require a hand-sanding process, which can introduce significant manufacturing tolerances. As a result, gaps may exist between these supporting legs and the chair body, causing the chair to wobble and become unstable, thus reducing the user experience.

[0003] Therefore, a new chair connection structure needs to be designed that can ensure a stable connection between the support legs and the chair body even when there are manufacturing tolerances between them. Summary of the Invention

[0004] According to this application, a chair includes a chair body and a support leg that can be connected to the chair body. One of the lower part of the chair body and the upper part of the support leg is provided with a mounting portion, and the other is provided with a plug-in portion. The plug-in portion can be inserted into the mounting portion along the plug-in direction to install the support leg onto the chair body. The inner surface of the circumferential sidewall of the mounting portion is provided with a fastening rib protruding inward. When the plug-in portion is inserted into the mounting portion, the fastening rib undergoes elastic deformation and abuts against the circumferential sidewall of the mounting portion, thereby securely installing the support leg onto the chair body.

[0005] In one embodiment, the circumferential sidewall has a plane of symmetry, and multiple tight-fitting ribs are provided, with the multiple tight-fitting ribs being symmetrically distributed with respect to the plane of symmetry.

[0006] In one embodiment, the tight-fitting rib extends through the entire depth of the circumferential sidewall.

[0007] In one embodiment, the thickness of the tight-fitting rib along the circumferential sidewall is 0.9-1.5 mm.

[0008] In one embodiment, a plurality of fastening ribs are provided on the circumferential sidewall of the mounting part, and the sum of the heights of the relatively arranged fastening ribs is 0.5-0.9 mm.

[0009] In one embodiment, the insertion part is provided with a positioning part, and the circumferential sidewall of the mounting part is provided with a foolproof rib corresponding to the positioning part.

[0010] In one embodiment, the mounting portion further includes a bottom wall, on which one or more abutment blocks are provided. The top surface of the abutment blocks forms an abutment plane, which is parallel to the upper surface of the support leg. When the insertion portion is inserted into the mounting portion, the abutment plane abuts against the upper surface of the support leg.

[0011] In one embodiment, the chair further includes a connector, a receiving portion is formed on the side surface of the plug-in portion, the connector is installed in the receiving portion, the connector further includes a connector body and a locking portion extending from the connector body, and a locking hole is further included on the circumferential side wall of the mounting portion, and the locking portion is locked in the locking hole when the plug-in portion is inserted into the mounting portion.

[0012] In one embodiment, the connector body has an outer peripheral surface, and the connector body includes a plurality of snap-fit ​​portions that protrude from the outer peripheral surface and are spaced apart along the outer peripheral surface.

[0013] In one embodiment, the connector body further includes a snap-fit ​​protrusion disposed on one or more of the snap-fit ​​portions, the snap-fit ​​protrusion protruding from the snap-fit ​​portion. Simple Explanation of the Diagram

[0014] Figure 1 is an exemplary chair according to this application;

[0015] Figure 2 is a bottom view of the chair body;

[0016] Figure 3 is a magnified view of the area within the box in Figure 2;

[0017] Figure 4A is a further enlarged view of the tight-fitting ribs in Figure 3;

[0018] Figure 4B is a partially enlarged perspective view of the tight-fitting rib from another angle;

[0019] Figure 5 is a partially enlarged sectional view taken along line AA in Figure 1;

[0020] Figures 6 and 7 are perspective views of the chair's support legs at different angles;

[0021] Figure 8 is a perspective view of the support leg in Figure 7 after the connector has been removed, taken from different angles.

[0022] Figures 9 and 10 are perspective views of the connector from different angles;

[0023] Figure 11 is a front sectional view of the chair;

[0024] Figure 12 is a magnified view of the area within the box in Figure 11. Implementation

[0025] While this invention has been illustrated and described with reference to specific embodiments, it should not be limited to the details shown. Rather, various modifications to these details may be made within the scope of equivalents of the claims and without departing from the invention.

[0026] The descriptions of directions such as "front," "back," "up," and "down" used in this article are for ease of understanding only. This invention is not limited to these directions, but can be adjusted according to actual circumstances.

[0027] Referring to FIG1, the chair 1 according to this application is described in general. The chair 1 is, for example, a children's high chair, including a chair body 400 and a support leg 500 detachably connected to the chair body 400. The chair body 400 carries a child, and the support leg 500 is connected to the lower part of the chair body 400 to support the chair body 400 on a support plane (e.g., the ground). The lower part of the chair body 400 is provided with a mounting part 100, and the upper part of the support leg 500 is provided with a plug-in part 200. By plugging the plug-in part 200 into the mounting part 100, the support leg 500 can be connected to the chair body 400. It should be understood that the mounting part 100 can also be provided on the chair body 400, and the plug-in part 200 can be provided on the support leg 500. Similarly, the support leg 500 can be connected to the chair body 400 by plugging the plug-in part 200 into the mounting part 100.

[0028] The mounting portion 100 according to this application will be described in more detail below with reference to Figures 2 and 3. In this embodiment, the mounting portion 100 is cylindrical and open at one end, thereby forming a mounting groove 120. The mounting portion 100 has a circumferential sidewall 110, for example, a generally rectangular circumferential sidewall 110. In use, the insertion portion 200 is inserted into the mounting portion 100 through the open end of the mounting portion 100 along the circumferential sidewall 110. Due to manufacturing tolerances, there may be some gaps between the insertion portion 200 and the circumferential sidewall 110 of the mounting portion 100, which may cause the support leg 500 to wobble or become unstable. For this purpose, at least one fastening rib 130 protruding toward the center of the mounting portion 100 is provided on the inner side of the circumferential sidewall 110. Furthermore, when the connector 200 is inserted into the mounting portion 100, the connector 200 abuts against the fastening rib 130, causing the fastening rib 130 to elastically deform, thereby causing the fastening rib 130 to abut between the connector 200 and the circumferential sidewall of the mounting portion 100. In some embodiments, more specifically, when the connector 200 is inserted into the mounting portion 100, the fastening rib 130 undergoes lateral deflection and abuts between the connector 200 and the mounting portion 100. In this way, the fastening rib 130 tightly abuts against the connector 200, so that the connector 200 (and the support leg 500) are stably held in the mounting portion 100. Here, lateral refers to the thickness direction W of the fastening rib 130. It should be understood that when multiple fastening ribs 130 are provided on the circumferential sidewall 110, each fastening rib 130 may extend in different directions, that is, the height direction H of each fastening rib 130 may be different from each other, and the thickness direction W of each fastening rib 130 may also be different from each other. Preferably, the fastening rib 130 is elastic, so that after the insertion part 200 is disengaged from the mounting part 100, the fastening rib 130 returns to its initial upright state under its own elasticity (as shown in Figure 3).

[0029] In some embodiments, a plurality of fastening ribs 130 are provided on the circumferential sidewall 110, and the fastening ribs 130 are symmetrically distributed along the circumferential sidewall 110, for example, symmetrically distributed along the plane of symmetry S of the mounting portion 100, as shown in FIG5. In some embodiments, the circumferential sidewall 110 is generally rectangular and includes a longer left sidewall and a right sidewall and a shorter upper sidewall and a lower sidewall. The number of fastening ribs provided on the upper sidewall and the lower sidewall is less than the number of fastening ribs provided on the left sidewall and the right sidewall. For example, there may be 6 fastening ribs 130 on the right sidewall and 2 fastening ribs 130 on the upper sidewall, but this application is not limited to this, and the number of fastening ribs provided on each sidewall may be other. Thanks to the symmetrically distributed plurality of fastening ribs 130, the insertion portion 200 can be held more stably. In some embodiments, the tight-fitting rib 130 extends across the entire circumferential sidewall 110 in the depth direction D, that is, from the open end of the mounting portion 100 to the closed bottom wall 170 of the mounting portion 100, so that the tight-fitting rib 130 can play a role in tightly fitting the two together throughout the entire process of the insertion portion 200 being inserted into the mounting portion 100 along the depth direction D.

[0030] The structure of the fastening rib 130 is described in more detail below with reference to Figures 4A and 4B. The fastening rib 130 includes a top surface 131, two side surfaces 133, and an end surface 132.

[0031] The top surface 131 is located near the outer end of the circumferential sidewall 110 along the insertion direction (i.e., the depth direction D). Two side surfaces 133 face opposite directions and are connected to the top surface 131 and the end surface 132, respectively, extending from the circumferential sidewall 110 approximately along the height direction H of the fastening rib 130. The end surface 132 is located on the fastening rib 130 away from the circumferential sidewall 110 and connects the top surface 131 and the two side surfaces 133. Therefore, the fastening rib 130 is enclosed by the top surface 131, the side surfaces 133, and the end surface 132 into a generally rectangular column shape.

[0032] In some embodiments, the thickness of each clamping rib 130 can be between 0.9 mm and 1.5 mm, preferably 1 mm. If the thickness is too small, the clamping rib 130 is not strong enough and cannot provide sufficient support strength to the insertion portion 200 after elastic deformation or lateral deflection; if the thickness is too large, the clamping rib 130 is too strong and therefore it is difficult to achieve the clamping function by elastic deformation or lateral deflection.

[0033] In some embodiments, a plurality of fastening ribs 130 are provided circumferentially spaced on the circumferential sidewall 110 of the mounting portion 100, some of which are arranged in opposite directions, such as the fastening ribs 130 located on the left sidewall 111 and right sidewall 112 of the circumferential sidewall 110 in FIG. 5, and the fastening ribs 130 located on the upper sidewall 113 and lower sidewall 114 of the circumferential sidewall 110 in FIG. 5. The sum of the heights of the fastening ribs 130 facing opposite directions on the circumferential sidewall 110 of the mounting portion 100 can be between 0.5 mm and 0.9 mm. Here, circumferential refers to the thickness direction W of each fastening rib 130. In some embodiments, the end face of the circumferential sidewall 110 of the mounting portion 100 is generally rectangular (e.g., the circumferential sidewall 110 shown in FIG3). The circumferential sidewall 110 has opposing first and second sidewalls (e.g., left sidewall 111 and right sidewall 112, or upper sidewall 113 and lower sidewall 114). The height of the fastening ribs 130 on each sidewall is the same. The height of the fastening ribs 130 on the first sidewall is H1, and the height of the fastening ribs 130 on the second sidewall is H2 (e.g., the height of the fastening rib on the left sidewall is H1, and the height of the fastening rib on the right sidewall is H2; or, the height of the fastening rib on the upper sidewall is H1, and the height of the fastening rib on the lower sidewall is H2). The sum of H1 and H2 is 0.5 mm - 0.9 mm. In some other embodiments not shown, the end face of the circumferential sidewall 110 of the mounting portion 100 is approximately circular. On this approximately circular circumferential sidewall 110, opposing fastening ribs 130 (i.e., fastening ribs 130 located on the same diameter) can be provided, with the sum of the heights of the opposing fastening ribs 130 being 0.5mm-0.9mm. This arrangement facilitates the deformation of the fastening ribs 130, thus requiring less force when inserting the insertion portion 200 into the mounting portion 100, making operation more convenient. Simultaneously, after removing the insertion portion 200 from the mounting portion 100, the fastening ribs 130 are more likely to recover their deformation. If the height is too small, the fastening ribs 130 are less likely to undergo elastic deformation or deflection; if the height is too large, the fastening ribs 130 are prone to excessive elastic deformation or deflection, failing to provide the necessary support strength.

[0034] In some embodiments, the top surface 131 may be provided with a chamfer or an arcuate profile, for example, at the position where the top surface 131 connects to the end face 132. When the plug portion 200 is inserted into the mounting portion 100, the chamfer or arcuate profile provided on the top surface 131 guides the plug portion 200 to be fully inserted into the mounting groove 120 of the mounting portion 100, while causing the fastening rib 130 to undergo lateral deflection deformation. As a result, the fastening rib 130 abuts against the plug portion 200 more stably, preventing the plug portion 200 from shaking.

[0035] In some embodiments, each fastening rib 130 is tapered with a gradually decreasing thickness along the direction from the circumferential sidewall 130 toward the center of the mounting portion 100; that is, the thickness of each fastening rib 130 gradually decreases along the height H direction. More specifically, each fastening rib 130 has a larger thickness W2 near the corresponding circumferential sidewall 110 and a smaller thickness W1 away from the circumferential sidewall 110, as shown in Figures 4A and 4B. Therefore, the fastening rib 130 easily comes into close contact with the insertion portion 200 and easily deforms to firmly hold the insertion portion, thereby preventing the insertion portion 200 from shaking.

[0036] In some embodiments, referring to Figures 3 and 5, the mounting portion 100 is generally rectangular and has at least one anti-misalignment rib 150 at one corner. The anti-misalignment rib 150 has a shape generally similar to the fitting rib 130, but may be longer, extending further toward the center of the mounting portion 100. The anti-misalignment rib 150 assists in the positioning of the support leg 500. Referring to Figure 6, the insertion portion 200 generally corresponds to the shape of the mounting portion 100 and has one corner cut off to form the positioning portion 210. Therefore, when the positioning portion 210 is aligned with the anti-misalignment rib 150, the insertion portion 200 can be inserted into the mounting portion 100. When the mounting angle of the support leg 500 is incorrect, the positioning portion 210 is not aligned with the anti-misalignment rib 150, and the insertion portion 200 cannot be inserted into the mounting portion 100. Therefore, the chair connection structure of this application can prevent the user from inserting the support leg 500 in the wrong direction.

[0037] In some embodiments, at least one abutment block 140 is provided on the bottom wall 170 of the mounting portion 100, and the abutment block 140 abuts against the end of the insertion portion 200 (refer to Figures 3 and 12). The abutment block 140 may be block-shaped and located near the edges of the bottom wall 170 of the mounting portion 100. Thanks to the abutment block 140, the insertion portion 200 is held more stably in the mounting portion 100, preventing the insertion portion 200 (and the support leg 500) from shaking. Further, the end surfaces of each abutment block 140 (i.e., the surfaces abutting against the support leg 500) are in the same plane and all abut against the upper surface 501 of the support leg 500. The upper surface 501 of the support leg 500 is parallel to its lower surface 502 (see Figures 6-8).

[0038] In some embodiments, the circumferential sidewall 110 of the mounting portion 100 is provided with a mounting hole 160, which is, for example, a through hole penetrating the circumferential sidewall 110. The function of the mounting hole 160 will be described below in conjunction with the connector 300.

[0039] Furthermore, the chair of this application also includes a connector 300, which connects the insertion portion 200 and the mounting portion 100, further improving the connection stability between the support leg 500 and the chair body 400. The support leg 500, insertion portion 200, and connector 300 are described below with reference to Figures 6 to 8. The insertion portion 200 can be integrally formed with the support leg 500 and is located at the upper end of the support leg 500; therefore, the upper surface 501 of the support leg 500 can be the upper surface of the insertion portion 200. The cross-sectional area of ​​the insertion portion 200 can be smaller than that of the support leg 500, so that when the insertion portion 200 is inserted into the mounting portion 100, the support leg 500 is approximately flush with the outer surface of the mounting portion 100 (see Figure 1), thereby creating a neat appearance.

[0040] The connector 300 is partially embedded in the insertion portion 200. Specifically, a receiving portion 220 is provided on the side surface of the insertion portion 200. The receiving portion 220 is recessed downward from the side surface of the insertion portion 200 and has a generally rectangular end face. The connector 300 can be installed in the receiving portion 220 of the insertion portion 200.

[0041] The connector 300 is described in more detail with reference to Figures 9 and 10. The connector 300 has a connector body and a locking portion 310 extending from the connector body. The locking portion 310 has a resilient arm structure; its fixed end is connected to the connector body, and its free end has a locking protrusion 311, which is approximately rectangular in shape. After the connector 300 is installed in the receiving portion 220, the locking protrusion 311 faces outwards from the insertion portion 200. Referring to Figure 3, a corresponding locking hole 160 is provided on the circumferential sidewall 110 of the mounting portion 100. When the insertion portion 200 is inserted into the mounting portion 100, the resilient arm-shaped locking portion 310 deforms, causing the locking protrusion 311 to eventually engage with the locking hole 160, thereby locking the insertion portion 200 in the mounting portion 100 and further improving the connection stability between the support leg 500 and the chair body 400.

[0042] Referring to Figures 9 and 10, the connector body is a generally rectangular sleeve shape and has an outer peripheral surface 320. A plurality of circumferentially spaced snap-fit ​​portions 321 are provided on the outer peripheral surface 320. When the connector 300 is installed into the receiving portion 220, the connector 300 forms an interference fit with the inner wall of the receiving portion 220 through the snap-fit ​​portions 321, thereby securely installing the connector 300 into the receiving portion 220. In some embodiments, referring to Figures 9 and 10, the connector 300 further includes snap-fit ​​protrusions 322 provided on one or more snap-fit ​​portions 321. The snap-fit ​​protrusions 322 protrude outward from the snap-fit ​​portion 321 and have a rib-like structure. This further improves the installation stability of the connector 300 and the receiving portion 220. Preferably, the height of the snap-fit ​​protrusion 322 is gradually changing; specifically, the portion of the snap-fit ​​protrusion 322 closer to the mounting side has a smaller height. This facilitates the initial installation of the connector 300 into the receiving portion 220. Preferably, the snap-fit ​​protrusions 322 are symmetrically distributed along the outer peripheral surface 320; in other words, the snap-fit ​​protrusions 322 are provided on an even number of snap-fit ​​portions 321 symmetrically distributed along the outer peripheral surface 320. This allows the snap-fit ​​protrusions 322 to function more evenly when the connector 300 is installed into the receiving portion 220.

[0043] While preferred embodiments have been shown and described herein, it should be understood that these embodiments are given by way of example only. Many variations, modifications, and substitutions will occur to those skilled in the art without departing from the spirit of the invention. Therefore, the appended claims are intended to cover all such variations that fall within the spirit and scope of the invention.

[0044] 1: Chairs 100: Installation Department 110: Circumferential sidewall 111: Left side wall 112: Right side wall 113: Upper sidewall 114: Lower sidewall 120: Mounting slot 130: Tightly fitted ribs 131: Top surface 131a: Rounded portion 132: End face W1: First width W2: Second width 133: Side View 140: Abutment Block 150: Mistake-proof Rib 160: Locking hole 170: Bottom wall W: Thickness direction H: Height direction D: Depth direction S: Plane of symmetry 200: Connector 210: Positioning Department 220: Reception Section 300: Connector 310: Locking Unit 311: Locking convex 312: Gap 320: Outer Peripheral Surface 321: Connector 322: Snap-fit ​​protrusion 400: Chair body 500: Supporting Leg 501: Upper surface 502: Lower surface

Claims

1. A chair, the chair comprising a chair body and a support leg connectable to the chair body, wherein a mounting portion is provided on one of the lower part of the chair body and the upper part of the support leg, and a plug-in portion is provided on the other part, the plug-in portion being capable of being plugged into the mounting portion along a plug-in direction to mount the support leg to the chair body, wherein, A tight-fitting rib protruding inward is provided on the inner surface of the circumferential sidewall of the mounting part. When the plug is inserted into the mounting part, the tight-fitting rib undergoes elastic deformation and abuts against the circumferential sidewall of the plug and the mounting part, thereby securely mounting the support leg to the chair body.

2. The chair according to claim 1, wherein, The circumferential sidewall has a symmetrical plane, and multiple tight-fitting ribs are provided, which are symmetrically distributed with respect to the symmetrical plane.

3. The chair according to claim 1, wherein, The tight-fitting rib extends through the entire depth of the circumferential sidewall.

4. The chair according to claim 1, wherein, The thickness of the circumferential sidewall of the tight-fitting rib is 0.9-1.5 mm.

5. The chair according to claim 1, wherein, The mounting part has a plurality of fastening ribs on its circumferential sidewall, and the sum of the heights of the fastening ribs arranged opposite each other is 0.5-0.9 mm.

6. The chair according to claim 1, wherein, The insertion part is provided with a positioning part, and the circumferential sidewall of the mounting part is provided with a foolproof rib corresponding to the positioning part.

7. The chair according to claim 1, wherein, The mounting part further includes a bottom wall, on which one or more abutment blocks are provided. The top surface of the abutment block forms an abutment plane, which is parallel to the upper surface of the support leg. When the insertion part is inserted into the mounting part, the abutment plane abuts against the upper surface of the support leg.

8. The chair according to claim 1, wherein, The chair also includes a connector, a receiving portion is formed on the side surface of the plug-in portion, the connector is installed in the receiving portion, the connector also includes a connector body and a locking portion extending from the connector body, the circumferential side wall of the mounting portion also includes a locking hole, when the plug-in portion is plugged into the mounting portion, the locking portion is locked in the locking hole.

9. The chair according to claim 8, wherein, The connector body has an outer peripheral surface, and the connector body includes a plurality of snap-fit ​​portions that protrude from the outer peripheral surface and are spaced apart along the outer peripheral surface.

10. The chair according to claim 9, wherein, The connector body also includes a snap-fit ​​protrusion disposed on one or more of the snap-fit ​​portions, the snap-fit ​​protrusion protruding from the snap-fit ​​portion.

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