Wood connector

Abstract

The application provides a wood connecting piece, and relates to the technical field of connecting pieces, which comprises a dovetail body, side wings arranged on both sides of the dovetail body, elastic connection between the side wings and the dovetail body and penetration along the depth direction of the mortise, a gap between the side wings and the dovetail body and arc shape of the side wings, elastic connection between the dovetail body and the side wings, accumulation of elastic force between the side wings and the dovetail body when the side wings are deformed, approach of the side wings to the dovetail body when the dovetail body is inserted into the mortise, deformation of the side wings, contact of the side of the side wings away from the dovetail body with the side wall of the mortise. Due to the existence of the elastic force, firstly, the two connected wood pieces can be firmly fixed, and secondly, even if the position needs to be adjusted due to the height difference of the end faces after the two connecting pieces are connected, the elastic gap between the side wings and the dovetail body can be used to eliminate the height difference formed by the two wood pieces, so that the end faces formed after the two wood pieces are connected are flat.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of connecting pieces, in particular to a wood connecting piece. BACKGROUND

[0002] The dovetail is a common force-bearing component of the mortise and tenon connection of wood products. After a period of observation and use, it is found that the common dovetail products on the market have some defects.

[0003] 1. The existing dovetail does not have an adjustment allowance. After the dovetail is wedged into the wood component, the connection of the wood component is completely solidified, and the height difference and inclination difference cannot be adjusted, resulting in uneven connection of the wood component connection position.

[0004] 2. The dovetail and the mortise are too tightly matched, and the connection depends on the deformation of the wood itself to some extent. In the connection of some hard wood (such as reconstituted wood) that is difficult to deform, the dovetail is often difficult to wedge into the mortise, and even shear failure may occur at the mortise.

[0005] 3. The corner of the existing dovetail is prone to stress concentration. In the tensile test of the dovetail, the corner is prone to shear failure of the component.

[0006] The present application relates to the technical field of connecting pieces, in particular to a wood connecting piece. SUMMARY

[0007] The present application relates to the technical field of connecting pieces, in particular to a wood connecting piece.

[0008] To achieve the above-mentioned purpose, the present application provides the following technical scheme:

[0009] The present application provides a wood connecting piece, which comprises a dovetail body, side wings arranged on both sides of the dovetail body, the side wings being elastically connected with the dovetail body and penetrating along the depth direction of the mortise, a gap being arranged between the side wings and the dovetail body, and the side wings being arranged in an arc shape with the arc center arranged on one side of the dovetail body, the end of the side wing away from the end connected with the dovetail body being abuttable with the dovetail body, and the two ends of the dovetail body being respectively in contact with the bottom surface of the mortise of the workpiece.

[0010] The first serration is arranged on the side wall of the side wing close to the dovetail body, the second serration is arranged on the side wall of the dovetail body close to the side wing, and the first serration and the second serration are engaged.

[0011] In the embodiment, the first serration and the second serration are both arranged in a sharp angle shape.

[0012] In the embodiment, the second serration is engaged with the first serration on the side away from the end surface of the two ends of the dovetail body.

[0013] In the embodiment, one end of the dovetail body deeply inserted into the mortise is provided with a fan-shaped section.

[0014] In the embodiment, the side wing and the dovetail body are arranged in an integrated structure.

[0015] In the embodiment, the end surface of the two ends of the dovetail body is provided with a guide rib.

[0016] In the embodiment, the outer end surface of the dovetail body is arranged in a plane.

[0017] The present application also provides a wooden product, which comprises the wooden connector as described above, and at least two wooden pieces, wherein each of the two wooden pieces is provided with a mortise, and the wooden connector is simultaneously inserted into the mortises of the two adjacent wooden pieces.

[0018] The technical scheme provided by the present application has the following beneficial effects:

[0019] The present application provides a kind of wood connector, including dovetail body, the side wing of being arranged in the both sides of dovetail body, i.e. side wing is provided with 4, side wing and dovetail body are elastically connected and along the depth direction of mortise, i.e. the depth of dovetail body is identical with the depth of side wing, gap is arranged between side wing and dovetail body, and between dovetail body and side wing, when side wing deforms, side wing and dovetail body between accumulate elastic force, when dovetail body is inserted in mortise, side wing will be close to dovetail body, i.e. deformation, because of the existence of elastic force, the side of side wing away from dovetail body is contacted with the side wall of mortise, so it can be firmly fixed two connected woodwork, simultaneously, because of the existence of gap between side wing and dovetail body, even if two connectors are connected and position needs to be adjusted when end surface height difference appears, it can be used the gap allowance between side wing and dovetail body, eliminate the height difference formed by two woodwork, so that the end surface formed by two woodwork is flat after being connected, simultaneously, side wing is arranged as arc, arc center is arranged at one side of dovetail body, side wing arc arrangement can eliminate concentrated stress, the stress of arched side wing is perpendicular to arc surface, so that stress is more uniform, greatly reduce the shear stress generated at the connection position of dovetail body, avoid shear failure at the connection position of dovetail body due to stress concentration, further improve the connection strength, wherein Figure 4 And Figure 5 As shown in Figure 4 The shear force generated at the connection position of dovetail to woodwork in Figure 5 The shear force generated at the connection position of dovetail to woodwork in The shear force generated at the connection position of dovetail to woodwork in The shear force generated at the connection position of dovetail to woodwork in

[0020] The shear force generated at the connection position of dovetail to woodwork in The shear force generated at the connection position of dovetail to woodwork in

[0021] The shear force generated at the connection position of dovetail to woodwork in Figure 1 The shear force generated at the connection position of dovetail to woodwork in The shear force generated at the connection position of dovetail to woodwork in

[0022] The shear force generated at the connection position of dovetail to woodwork in Figure 2is a perspective view showing a wood connector according to an exemplary embodiment;

[0023] Figure 3 is a side view showing a wood connector according to an exemplary embodiment;

[0024] Figure 4 is a stress distribution diagram of a general dovetail according to an exemplary embodiment;

[0025] Figure 5 is a stress distribution diagram of the wood connector according to an exemplary embodiment.

[0026] In the drawing: 1, dovetail body; 2, side wing; 3, first sawtooth; 4, second sawtooth; 5, fan-shaped segment; 6, guide rib; 7, gap. DETAILED DESCRIPTION

[0027] In order to make the objects, technical solutions and advantages of the present application clearer, the technical solutions of the present application will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of the present application.

[0028] The present detailed description provides a wood connector to solve the technical problems of stress concentration, no adjustment space and too tight fit between dovetail and mortise in the prior art.

[0029] Hereinafter, the embodiments will be described with reference to the accompanying drawings. In addition, the embodiments shown below do not have any limiting effect on the invention content recited in the claims. In addition, the entire content of the constitution represented by the following embodiments is not limited to what is necessary as a solution to the invention recited in the claims.

[0030] Reference Figures 1-3The application provides a wood connecting piece, which comprises a dovetail body 1, side wings 2 arranged on both sides of the dovetail body 1, the side wings 2 are arranged with four, the side wings 2 are elastically connected with the dovetail body 1 and penetrate along the depth direction of the mortise, that is, the depth of the dovetail body 1 is the same as the depth of the side wings 2, a gap 7 is arranged between the side wings 2 and the dovetail body 1, and the dovetail body 1 and the side wings 2 are elastically connected, when the side wings 2 are deformed, the elastic force is accumulated between the side wings 2 and the dovetail body 1, when the dovetail body 1 is inserted into the mortise, the side wings 2 are close to the dovetail body 1, that is, the deformation occurs, due to the existence of the elastic force, the side of the side wings 2 away from the dovetail body 1 is in contact with the side wall of the mortise, so that the two connected wood pieces can be firmly fixed, at the same time, due to the existence of the gap 7 between the side wings 2 and the dovetail body 1, when the position needs to be adjusted due to the height difference of the end faces after the two wood pieces are connected, the gap between the side wings 2 and the dovetail body 1 can be used to eliminate the height difference formed by the two wood pieces, so that the end face formed after the two wood pieces are connected is flat, at the same time, the side wings 2 are arranged in an arc shape, the arc center is arranged on one side of the dovetail body 1, the arc-shaped side wings 2 can eliminate the concentrated stress, the stress borne by the arched side wings 2 is perpendicular to the arc surface, so that the stress is more uniform, the shear stress generated at the connecting position of the dovetail body 1 is greatly reduced, the shear damage to the connecting position of the wood piece caused by stress concentration is avoided, and the connecting strength is further improved, wherein Figure 4 and Figure 5 under the same conditions, Figure 4 the shear force generated at the connecting position of the dovetail to the wood piece in the dovetail body reaches 9.095Mpa (the position indicated by the arrow in the figure), Figure 5 the shear force generated at the connecting position of the dovetail body to the wood piece is 3.035MPa (the position indicated by the arrow in the figure), which reduces the shear force at the connecting position of the dovetail body to the wood piece by two-thirds, disperses the force to the surrounding, prolongs the service life of the dovetail body 1 and the wood piece, and in the process of extrusion, the position of the side wings 2 away from the connecting position of the side wings 2 and the dovetail body 1 is in contact with the side surface of the dovetail body 1, which provides a support point for the side wings 2, wherein the end faces of the left and right ends of the dovetail body 1 are respectively in contact with the bottom surface of the mortise of the wood piece. Figure 1 The left and right directions in the

[0031] In this embodiment, in order to provide support force for the side wing 2 and improve the strength of the side wing 2, at least one first sawtooth 3 is arranged on the side wall of the side wing 2 close to the dovetail body 1, and a second sawtooth 4 matched with the first sawtooth 3 is arranged on the side wall of the dovetail body 1 close to the side wing 2, and the first sawtooth 3 and the second sawtooth 4 are engaged, that is, in the initial state of the wood connector, without being deeply inserted into the mortise of the two wooden pieces, the first sawtooth 3 and the second sawtooth 4 are engaged, the support force is provided between the two engaged sawteeth, the connection between the side wing 2 and the wooden piece is tight, the connection of the two wooden pieces is firm, and the two wooden pieces can be close to each other, and the side wing 2 cannot slide and dislocate when the side wing 2 is close to the dovetail body 1, so that the tooth surface is not damaged due to uneven force, and the first sawtooth is extruded to the second sawtooth 4 to generate an occupation displacement of the cavity 7, so that the purpose of “elasticity” is achieved.

[0032] In this embodiment, in order to facilitate the engagement of the first sawtooth 3 and the second sawtooth 4, the first sawtooth 3 and the second sawtooth 4 are both arranged in a sharp angle shape, and as the side wing 2 is closer to the dovetail body 1, the depth of the engagement of the first sawtooth 3 and the second sawtooth 4 is greater, so that the first sawtooth 3 or the second sawtooth 4 is easily broken, the first sawtooth 3 and the second sawtooth 4 are arranged in a sharp angle shape or a trapezoidal shape, so that even if there is a small support force in the initial state of the wooden piece, the two sides of the first sawtooth 3 and the second sawtooth 4 are provided with a slope, facilitating the engagement between the first sawtooth 3 and the second sawtooth 4, and the greater the engagement degree, the greater the support force, and since the cross-sectional area of the bottom end of the first sawtooth 3 and the second sawtooth 4 is larger, the strength of the first sawtooth 3 and the second sawtooth 4 can be increased to avoid breakage.

[0033] In this embodiment, one side of the end face of the second sawtooth 4 away from the two ends of the dovetail body 1 is engaged with the first sawtooth 3, and when the wood connector is arranged in the mortise, the side wing 2 is pressed to make the first sawtooth 3 close to the second sawtooth 4, and the second sawtooth 4 provides a force to the first sawtooth 3 to make the two wooden pieces close to each other.

[0034] In this embodiment, in order to facilitate the dovetail body 1 to enter the mortise, a fan-shaped section 5 is arranged at one end of the dovetail body 1 deeply inserted into the mortise.

[0035] In this embodiment, the side wing 2 and the dovetail body 1 are arranged in an integrated structure, so that the connection strength of the side wing 2 and the dovetail body 1 is increased, and the service life of the side wing 2 is prolonged.

[0036] In this embodiment, in order to facilitate the dovetail to smoothly enter the mortise, guide ribs 6 are arranged on the end faces of the two ends of the dovetail body 1, the guide ribs 6 reduce the contact area with the mortise, and facilitate the sliding of the dovetail body 1 into the mortise.

[0037] In this embodiment, in order to ensure that the dovetail tenon body 1 is placed in the mortise, the outer end surface of the dovetail tenon body 1 is arranged as a plane.

[0038] The present application also provides a wooden product comprising any of the above-mentioned wooden connectors and at least two wooden pieces, wherein each of the two wooden pieces is provided with a mortise, and the wooden connector is inserted into the mortises of the two adjacent wooden pieces to connect the two wooden pieces together. In this way, a plurality of wooden pieces can be connected into a wooden product, wherein the wooden product can be a photo frame or a toy.

[0039] It should be noted that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like in this document indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" and the like are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0040] In the description herein, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0041] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical scope disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

[0042] It can be understood that the same or similar parts in the above embodiments can be mutually referred to, and the contents not described in detail in some embodiments can be referred to the same or similar contents in other embodiments. The multiple schemes provided by the present application contain the basic scheme itself, are independent of each other, and do not restrict each other, but they can also be combined with each other without conflict, to achieve multiple effects together.

[0043] Although the embodiments of the present application have been shown and described above, it is to be understood that the above-described embodiments are merely exemplary, and are not to be understood as limiting the present application, and the ordinary skilled in the art can make changes, modifications, replacements and variations to the above-described embodiments within the scope of the present application.

Claims

1. A wood joint, characterized in that The tenon includes a dovetail tenon body (1) and side wings (2) on both sides of the dovetail tenon body (1). The side wings (2) are elastically connected to the dovetail tenon body (1) and penetrate along the depth direction of the mortise. A gap (7) is provided between the side wings (2) and the dovetail tenon body (1). The side wings (2) are arc-shaped with the center of the arc located on one side of the dovetail tenon body (1). The end of the side wings (2) that is connected to the dovetail tenon body (1) away from the side wings can abut against the dovetail tenon body (1). The two ends of the dovetail tenon body (1) are in contact with the bottom surface of the mortise of the wooden part. A first serration (3) is provided on the side wall of the side wings (2) that is close to the dovetail tenon body (1). A second serration (4) that cooperates with the first serration (3) is provided on the side wall of the dovetail tenon body (1) that is close to the side wings (2). The first serration (3) and the second serration (4) are engaged.

2. A wood joint according to claim 1, characterized in that Both the first saw tooth (3) and the second saw tooth (4) are set to be sharp angles.

3. The wood connector of claim 1, wherein The second saw tooth (4) engages with the first saw tooth (3) on one side of the end face away from both ends of the dovetail tenon body (1).

4. The wood connector of claim 1, wherein The dovetail tenon body (1) has a fan-shaped section (5) at one end that extends into the mortise.

5. The wood connector of claim 1, wherein The side wing (2) and the dovetail tenon body (1) are configured as an integral structure.

6. The wood connector of claim 1, wherein The dovetail tenon body (1) has guide ribs (6) on both ends of its end faces.

7. The wood connector of claim 1, wherein The outer end face of the dovetail tenon body (1) is set as a plane.

8. A wood product, characterized in that The device includes the timber connector as described in any one of claims 1-7, and further includes at least two wooden parts, both of which are provided with mortises, and the timber connector is simultaneously inserted into the mortises of two adjacent wooden parts.

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