Mortise and tenon wedge connecting structure and chair

Abstract

The utility model provides a mortise and tenon wedge connecting structure and a chair, and relates to the technical field of furniture manufacturing, the mortise and tenon wedge connecting structure comprises a tenon wedge assembly and a mortise joint hole, the tenon wedge assembly comprises a tenon main body and a tenon wedge, the end part of the tenon main body is provided with a tenon groove, the tenon wedge is arranged in the tenon groove, and the outer side of the end part of the tenon main body is provided with a plurality of grooves; the mortise joint hole is a blind hole with the diameter of the bottom end larger than the diameter of the opening end, a plurality of protrusions are arranged on the inner side face of the bottom end, and when the tenon wedge assembly is installed in the mortise joint hole, the tenon wedge is wedged into the tenon groove so that the end of the tenon body can expand towards the large-aperture space of the bottom end of the mortise joint hole. The grooves in the outer side face of the tenon body and the protrusions on the inner side face of the mortise connection hole are complementary in space. According to the technical scheme, the technical problem that a mortise and tenon wedge connecting structure in furniture in the prior art is prone to loosening under the long-term use condition is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of furniture manufacturing, in particular to a mortise and tenon wedge connection structure and a chair. Background Art

[0002] Mortise and tenon play a dominant role in the structure of solid wood furniture and are known as the "essence" of solid wood furniture. It has a history of thousands of years in my country. However, the structure of solid wood furniture tells us that mortise and tenon are the fit of the corresponding convex and concave parts. At present, the convex and concave parts of solid wood furniture generally adopt excessive fit, and the convex can be inserted into the concave and pulled out, resulting in the existing solid wood furniture having a loose and obvious structure after long-term use, so that the solid wood furniture fails to achieve a physically integrated structure. Utility Model Content

[0003] The purpose of the utility model is to provide a mortise and tenon wedge connection structure and a chair to solve the technical problem that the mortise and tenon wedge connection structure in the prior art furniture is easy to loosen after long-term use. The preferred technical solution among the many technical solutions provided by the utility model can produce many technical effects as described below.

[0004] To achieve the above-mentioned purpose, on the one hand, the utility model provides a mortise and tenon wedge connection structure, including a mortise and tenon assembly and a mortise hole, the mortise and tenon assembly including a mortise main body with a mortise groove at the end and a mortise wedge arranged in the mortise groove, a plurality of grooves are arranged on the outer side of the end of the mortise main body; the mortise hole is a blind hole with a bottom end diameter larger than an opening end diameter, a plurality of protrusions are arranged on the inner side surface of the bottom end, when the mortise and tenon assembly is installed in the mortise hole, the mortise wedge is wedged into the mortise groove so that the end of the mortise main body expands toward the large aperture space at the bottom end of the mortise hole, and the plurality of grooves on the outer side surface of the mortise main body complement the plurality of protrusions on the inner side surface of the mortise hole.

[0005] Optionally, the mortise and tenon groove is a tapered groove, and the mortise and tenon wedge is a tapered wedge.

[0006] Optionally, the convergent end of the tapered groove is connected to an arc groove.

[0007] Optionally, the tenon body is cylindrical or rectangular, and the shape of the mortise and tenon hole corresponds to the shape of the tenon body it matches.

[0008] On the other hand, the utility model provides a chair, which is connected by any of the mortise and tenon wedge connection structures described above, including a left side panel, a right side panel and a seat panel, and the two sides of the seat panel are respectively connected to the left side panel and the right side panel by the mortise and tenon wedge connection structure.

[0009] Optionally, a back plate is also included, and the back plate is respectively connected to the seat plate, the left side plate and the right side plate through the mortise and tenon wedge connection structure.

[0010] Optionally, the connection via the mortise and tenon wedge connection structure includes respectively providing a mortise and tenon hole on two connected main parts at set connection positions, and the mortise and tenon holes on the two connected parts respectively form a mortise and tenon wedge connection structure with one of two wedge-containing end parts of a tenon main body.

[0011] The technical solution of the utility model may have the following beneficial effects:

[0012] The utility model provides a mortise and tenon wedge connection structure and a chair, in which the mortise and tenon wedge connection structure comprises a mortise groove at the end of the tenon main body and a mortise wedge, and when assembled with a mortise hole, the mortise wedge is wedged into the mortise groove so that the ends with grooves on both sides of the mortise groove expand outwards and are embedded with the corresponding protruding structures in the mortise hole, and occupy the large diameter space at the end of the mortise hole, forming a non-detachable mortise and tenon connection structure, and the main parts of the chair are connected by the mortise and tenon wedge connection structure, and the connection structure is not easy to loosen and disengage even in the case of long-term use.

[0013] It can be seen that the mortise and tenon wedge connection structure and the chair of the present invention solve the technical problem that the mortise and tenon wedge connection structure in the furniture of the prior art is easy to loosen after long-term use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 It is a schematic diagram of a mortise and tenon wedge connection structure of an embodiment of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of a chair according to an embodiment of the utility model;

[0017] Figure 3 It is a front view of a chair according to an embodiment of the utility model;

[0018] Figure 4 yes Figure 3 A-A section view;

[0019] Figure 5 yes Figure 4 A partial enlarged view of point Ⅰ in the middle;

[0020] Figure 6 It is a structural schematic diagram of the tenon and wedge assembly in an embodiment of the utility model.

[0021] In the figure: 1, seat plate; 2, left side plate; 3, right side plate; 4, back plate; 5, tenon body; 51, tenon groove; 52, arc groove; 53, groove; 6, tenon wedge; 7, mortise and tenon hole; 71, protrusion. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the utility model.

[0023] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element at the same time. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0024] Figure 1 Schematic diagram of a mortise and tenon wedge connection structure according to an embodiment of the present utility model. Figure 1 , Figure 5 , Figure 6 As shown:

[0025] The utility model provides a mortise and tenon wedge connection structure, including a mortise and tenon wedge assembly and a mortise and tenon hole 7, the mortise and tenon wedge assembly includes a mortise main body 5 with a mortise groove 51 at the end and a mortise wedge 6 arranged in the mortise groove 51, a plurality of grooves 54 are arranged on the outer side of the mortise main body 5 corresponding to the mortise groove 51; the mortise and tenon hole 7 is a blind hole with a bottom end diameter greater than an opening end diameter, a plurality of protrusions 71 are arranged on the inner side surface of the bottom end, when the mortise and tenon wedge assembly is installed into the mortise and tenon hole 7, the mortise and tenon wedge 6 is wedged into the mortise groove 51 so that the end of the mortise main body expands toward the large aperture space at the bottom end of the mortise and tenon hole 7, and the plurality of grooves 53 on the outer side surface of the mortise main body 1 complement the plurality of protrusion spaces on the inner side surface of the mortise and tenon hole 7.

[0026] Specifically, an expansion space is designed at the bottom of the mortise and tenon hole 7 on the main part of the solid wood furniture, a tapered groove is opened at the end of the tenon body, and a tenon wedge is embedded in the tapered groove. The top of the wedge end of the tenon wedge assembly is inserted directly to the bottom of the mortise and tenon hole 7, and then pressure is applied to the other top of the tenon body. The tenon wedge is squeezed into the tenon groove, and the tenon flaps on the outer edge of the tenon groove expand outward under the action of the tenon wedge to occupy the designed space at the bottom of the mortise and tenon hole 7, thereby achieving the purpose of integrated combination of structural components.

[0027] As an optional embodiment, the tenon groove 51 is a tapered groove, and the tenon wedge 6 is a tapered wedge. The tapered surface of the tapered groove 51 provides a path for the tapered wedge 6 to wedge in.

[0028] As an optional embodiment, the converged end of the tapered groove is connected to an arc groove 52. The arc groove 52 is arranged at the converged end of the tapered groove, which can eliminate the stress concentration at the end of the mortise groove when the mortise wedge opens the mortise groove, so that the mortise body will not expand and crack.

[0029] As an optional embodiment, the tenon body 1 is cylindrical or rectangular, and the shape of the mortise and tenon hole 7 corresponds to the shape of the tenon body 1 it matches.

[0030] On the other hand, Figure 2 , Figure 3 , Figure 4 As shown, the utility model provides a chair, which is connected by any of the above-mentioned mortise and tenon wedge connection structures, including a left side panel 2, a right side panel 3 and a seat panel 1, and the two sides of the seat panel 1 are respectively connected to the left side panel 2 and the right side panel 3 by the mortise and tenon wedge connection structure.

[0031] Specifically, the chair of this embodiment uses the same solid wood material as the main part, and a mortise hole 7 is opened on the designated design surface. The hole diameter is set to be half of the plate thickness, and the hole depth is 1.5 times the hole diameter. The bottom of the mortise hole 7 is enlarged with a petal arc chisel, and the bottom of the mortise hole 7 is chiseled into a horseshoe shape. The bottom diameter of the horseshoe fan surface is 2mm larger than the hole diameter, the height of the horseshoe is 5mm, and the top is equal to the diameter of the round hole; it can also be set as a rectangular hole, the hole width is half of the plate thickness, the hole depth is 1.5 times the hole width, and the bottom of the rectangular hole is chiseled into a horseshoe shape along the wood pattern with a petal flat chisel along the wood pattern. The bottom diameter of the horseshoe is larger than the hole diameter by 2mm, the height of the horseshoe is 5mm, and the upper edge of the horseshoe is equal to the width of the rectangle. The expansion of the horseshoe hole wall provides expansion space for the groove of the tenon outside the mortise groove. Each set mortise and tenon hole 7 is equipped with a tenon body of a single-head or double-head mortise and tenon assembly, and tenons are respectively inserted into the cylindrical tenon and / or rectangular tenon grooves. The density of the tenon wedge material is the same as that of the main part of the chair. When making furniture of a certain material, the material density must be measured first, and then the length of the tenon wedge extending out of the tenon groove is calculated. During assembly, the conical surface of the tenon groove and the conical surface of the tenon wedge are coated with wax, and then the small head of the tenon wedge is inserted into the tenon groove, and the conical surface of the tenon wedge is tangent to the conical surface of the tenon groove, and the large head of the tenon wedge is exposed to form a tenon wedge assembly.

[0032] As an optional embodiment, a back plate 4 is further included, and the back plate 4 is respectively connected to the rear side of the seat plate 1, the inner side of the left side plate 2 and the inner side of the right side plate 3 through the mortise and tenon wedge connection structure.

[0033] As an optional embodiment, the connection through the mortise and tenon wedge connection structure includes providing a mortise and tenon hole 7 on each of the two connected main parts at a set connection position, and the mortise and tenon holes 7 on the two connected parts respectively form a mortise and tenon wedge connection structure with one of the two wedge-containing end portions of a tenon main body 5.

[0034] The technical solution is a mortise and tenon wedge structure. The tenon body of the mortise and tenon wedge assembly is inserted into the mortise and tenon hole 7 in the main connecting part as a connecting part and cannot be pulled outward, thereby realizing a physically integrated structure after the furniture is connected. The mortise and tenon wedge connection structure and the chair structure are simple and easy to use. The mortise and tenon wedge connection part can be produced using the leftover materials of the main part, and the cost is low.

[0035] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0036] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A mortise and tenon wedge connection structure, characterized in that: It includes a tenon and a wedge assembly and a mortise and tenon hole, wherein the tenon and the wedge assembly includes a tenon body with a tenon groove at the end and a tenon wedge arranged in the tenon groove, and a plurality of grooves are arranged on the outer side of the end of the tenon body; the mortise and tenon hole is a blind hole with a bottom end diameter larger than an opening end diameter, and a plurality of protrusions are arranged on the inner side surface of the bottom end. When the tenon and the wedge assembly is installed in the mortise and tenon hole, the tenon wedge is wedged into the tenon groove so that the end of the tenon body expands toward the large aperture space at the bottom end of the mortise and tenon hole, and the plurality of grooves on the outer side surface of the tenon body complement the plurality of protrusions on the inner side surface of the mortise and tenon hole.

2. The mortise and tenon wedge connection structure according to claim 1, characterized in that: The tenon groove is a tapered groove, and the tenon wedge is a tapered wedge.

3. The mortise and tenon wedge connection structure according to claim 2, characterized in that: The converged end of the tapered groove is connected to an arc groove.

4. The mortise and tenon wedge connection structure according to any one of claims 1 to 3, characterized in that: The tenon body is cylindrical or rectangular, and the shape of the mortise and tenon hole corresponds to the shape of the tenon body it matches.

5. A chair, characterized in that: The connection is performed through the mortise and tenon wedge connection structure as described in any one of claims 1 to 4, comprising a left side plate, a right side plate and a seat plate, wherein both sides of the seat plate are respectively connected to the left side plate and the right side plate through the mortise and tenon wedge connection structure.

6. The chair according to claim 5, characterized in that: It also includes a back plate, which is respectively connected to the seat plate, the left side plate and the right side plate through the mortise and tenon wedge connection structure.

7. The chair according to claim 5 or 6, characterized in that: The connection through the mortise and tenon wedge connection structure includes, respectively setting a mortise and tenon hole on two connected main parts at the set connection position, including the connected parts, and the mortise and tenon holes on the two connected parts respectively form a mortise and tenon wedge connection structure with one of the two wedge-containing end parts of a tenon main body.

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