Universal dovetail mortise and tenon joint structure

Abstract

The utility model discloses a universal dovetail mortise and tenon joint structure, which belongs to the technical field of dovetail mortise and tenon joints, and comprises a mortise arranged on a first connecting piece and a tenon block arranged on a second connecting piece, and two side edges and bottom edges of the mortise and the tenon block are all of bevel edge structures; according to the utility model, the bottom edges of the mortise and the tenon block are of bevel edge structures, and after the tenon block is matched with the mortise, the bottom edge of the tenon block is meshed with the bottom edge of the mortise, so that a structure which is more tightly pressed downwards is formed, the stability of connection is ensured, and sound caused by shaking is avoided; the mortise and the bottom edge of the tenon block are of the arc-shaped structure, on one hand, the contact area of the bottom edge of the tenon block and the mortise is increased, connection stability is guaranteed, on the other hand, the corner does not need to be made into a right-angle structure, and machining through automatic equipment is facilitated.

Description

Technical Field

[0001] The utility model belongs to the technical field of dovetail mortise and tenon joints, and in particular relates to a universal dovetail mortise and tenon joint structure. Background Art

[0002] Dovetail joints are a type of right-angle joint for flat wood. The stepped tenon allows the corners of the workpiece to be joined with high strength to prevent them from coming apart when stressed. Dovetail joints are very common in wooden furniture because of their good mechanical properties.

[0003] The existing dovetail structure has some problems in practical use, such as:

[0004] 1. In order to facilitate assembly, the size of the tenon block is generally slightly smaller than the size of the tenon groove, which will cause a certain amount of shaking after assembly and is prone to noise;

[0005] 2. Manual processing is slow, and the CNC lathe production can only use a knife to trim the angle, and it is impossible to trim it into a completely right angle. Utility Model Content

[0006] In order to solve the problems raised in the above background technology, the utility model provides a universal dovetail mortise and tenon structure, which has the characteristic that the tenon block and the mortise groove become tighter as they are pressed together.

[0007] To achieve the above object, the utility model provides the following technical solution: a universal dovetail mortise and tenon structure, comprising a mortise groove provided on a first connecting member and a tenon block provided on a second connecting member, wherein both side edges and the bottom edge of the mortise groove and the tenon block are bevel structures. The mortise groove is an upper open structure. The inclination angle of the bevel is less than 86 degrees.

[0008] To facilitate assembly, further, the size of the tenon groove is 0.5±0.1 mm larger than the size of the tenon block.

[0009] In order to increase the contact area between the bottom edge of the tenon block and the tenon groove and ensure the stability of the connection, on the other hand, there is no need to make the corner into a right-angle structure, which is convenient for processing by automated equipment. Furthermore, the bottom edge of the tenon groove and the tenon block is an arc structure.

[0010] In order to limit the position of the tenon block after the tenon block and the tenon groove are matched, and ensure the stability and safety of the mortise and tenon joint, the tenon groove is a semi-open structure, the height of the tenon groove is greater than the height of the tenon block, and also includes a wooden wedge block, which is located above the tenon block and embedded in the tenon groove. An inclined surface is provided on the upper surface of the wooden wedge block, and a corresponding upper inclined surface is provided on the upper side wall of the tenon groove.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. The bottom edges of the tenon groove and the tenon block of the utility model are both bevel structures. After the tenon block and the tenon groove are matched, the bottom edge of the tenon block and the bottom edge of the tenon groove are engaged with each other, thereby forming a structure that becomes tighter as it is pressed downward, ensuring the stability of the connection and avoiding shaking and causing noise;

[0013] 2. The bottom edge of the tenon groove and the tenon block of the utility model is an arc-shaped structure, which increases the contact area between the bottom edge of the tenon block and the tenon groove to ensure the stability of the connection. On the other hand, there is no need to make the corner into a right-angle structure, which is convenient for processing by automated equipment;

[0014] 3. The mortise and tenon of the utility model is a semi-open structure. The height of the mortise and tenon is greater than the height of the tenon block. It also includes a wooden wedge. After the tenon block and the mortise and tenon are matched, the wooden wedge is inserted into the mortise and tenon to limit the position of the tenon block and ensure the stability and safety of the mortise and tenon joints. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the top view of the tenon groove of the utility model;

[0018] Figure 3 It is a schematic diagram of the cross-sectional structure of the tenon and groove of the utility model;

[0019] Figure 4 It is a schematic diagram of the top view of the tenon block of the utility model;

[0020] Figure 5 This is a schematic diagram of the main structure of the tenon block of the utility model;

[0021] Figure 6 This is a schematic diagram of the axonometric structure of the tenon block of the utility model;

[0022] Figure 7 This is a schematic diagram of the structure of the tenon block and the tenon groove of the utility model after they are matched;

[0023] Figure 8 It is a structural schematic diagram of another embodiment of the utility model;

[0024] Fig. 9 It is a schematic cross-sectional structural diagram of the mortise and tenon in another embodiment of the utility model;

[0025] Fig.10 This is a schematic diagram of the structure of the tenon block, the tenon groove and the wooden wedge block after they are matched in one embodiment of the utility model;

[0026] In the figure: 1, first connecting member; 2, mortise and tenon; 3, tenon block; 4, second connecting member; 5, wooden wedge block; 6, upper inclined surface. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] Example 1

[0029] See also Figure 1-7 The utility model provides the following technical solution: a universal dovetail mortise and tenon structure, comprising a mortise groove 2 provided on a first connecting member 1 and a tenon block 3 provided on a second connecting member 4, wherein both sides and the bottom of the mortise groove 2 and the tenon block 3 are bevel structures. The mortise groove 2 is an upper open structure. The inclination angle of the bevel is less than 86 degrees.

[0030] By adopting the above technical solution, the bottom edges of the tenon groove 2 and the tenon block 3 of the utility model are both beveled structures. After the tenon block 3 is matched with the tenon groove 2, the bottom edge of the tenon block 3 bites with the bottom edge of the tenon groove 2, thereby forming a structure that becomes tighter as it is pressed downward, thereby ensuring the stability of the connection and avoiding shaking and causing noise.

[0031] Specifically, the size of the mortise groove 2 is 0.5±0.1 mm larger than the size of the mortise block 3 .

[0032] By adopting the technical solution, assembly is facilitated.

[0033] Example 2

[0034] The present embodiment is different from the first embodiment in that: specifically, the bottom edges of the tenon groove 2 and the tenon block 3 are arc-shaped structures.

[0035] By adopting the above technical solution, on the one hand, the contact area between the bottom edge of the tenon block 3 and the tenon groove 2 is increased to ensure the stability of the connection. On the other hand, there is no need to make the corner into a right-angle structure, which is convenient for processing by automated equipment.

[0036] Example 3

[0037] See also Figure 8-10The difference between this embodiment and embodiment 1 is that: specifically, the mortise and tenon 2 is a semi-open structure, the height of the mortise and tenon 2 is greater than the height of the tenon block 3, and it also includes a wooden wedge block 5, the wooden wedge block 5 is located above the tenon block 3, the wooden wedge block 5 is embedded in the mortise and tenon 2, an inclined surface is provided on the upper surface of the wooden wedge block 5, and the upper side wall of the mortise and tenon 2 is provided with a corresponding upper inclined surface 6.

[0038] By adopting the above technical solution, after the tenon block 3 is matched with the tenon groove 2, the wooden wedge block 5 is inserted into the tenon groove 2 to limit the position of the tenon block 3 and ensure the stability and safety of the mortise and tenon.

[0039] To sum up, the bottom edges of the tenon groove 2 and the tenon block 3 of the utility model are both beveled edge structures. After the tenon block 3 is matched with the tenon groove 2, the bottom edge of the tenon block 3 is engaged with the bottom edge of the tenon groove 2, thereby forming a structure that becomes tighter as it is pressed downward, thereby ensuring the stability of the connection and avoiding shaking and noise; the bottom edges of the tenon groove 2 and the tenon block 3 of the utility model are arc-shaped structures, which on the one hand increase the contact area between the bottom edge of the tenon block 3 and the tenon groove 2 to ensure the stability of the connection, and on the other hand do not need to make the corner into a right-angle structure, thereby facilitating processing by automated equipment; the tenon groove 2 of the utility model is a semi-open structure, the height of the tenon groove 2 is greater than the height of the tenon block 3, and also includes a wooden wedge block 5. After the tenon block 3 is matched with the tenon groove 2, the wooden wedge block 5 is inserted into the tenon groove 2 to limit the tenon block 3 and ensure the stability and safety of the mortise and tenon joints.

[0040] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A universal dovetail mortise and tenon structure, characterized in that: It includes a tenon groove arranged on a first connecting member and a tenon block arranged on a second connecting member, wherein both side edges and the bottom edge of the tenon groove and the tenon block are bevel structures; The inclination angle of the hypotenuse is less than 86 degrees.

2. A universal dovetail mortise and tenon structure according to claim 1, characterized in that: The tongue and groove is an upper open structure.

3. A universal dovetail mortise and tenon structure according to claim 1, characterized in that: The size of the tenon groove is 0.5±0.1 mm larger than the size of the tenon block.

4. A universal dovetail mortise and tenon structure according to claim 1, characterized in that: The bottom edges of the tenon groove and the tenon block are arc-shaped structures.

5. A universal dovetail mortise and tenon structure according to claim 1, characterized in that: The mortise and tenon is a semi-open structure, the height of the mortise and tenon is greater than the height of the tenon block, and also includes a wooden wedge block, which is located above the tenon block and embedded in the mortise and tenon.

6. A universal dovetail mortise and tenon structure according to claim 5, characterized in that: An inclined surface is arranged on the upper surface of the wooden wedge block, and a corresponding upper inclined surface is arranged on the upper side wall of the mortise and tenon groove.

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