Built-in lever-type snap structure

Abstract

The present invention discloses a built-in lever-type snap structure, which includes a card slot provided on the inner wall of an external workpiece, a mounting groove provided on the outer wall of an internal workpiece, and a clamping block provided in the mounting groove. The positions of the card slot and the mounting groove are relatively set. A rib is horizontally provided at the bottom of the mounting groove. The clamping block can perform a lever movement with the rib as a fulcrum. An inclined surface is provided at the bottom of the card slot and slopes inwards. During assembly, the internal workpiece with the clamping block can be inserted into the external workpiece without obstruction. The inclined surface of the card slot can push one end of the clamping block close to the bottom of the mounting groove. The other end of the clamping block rotates around the rib and contacts the bottom of the card slot and is clamped at the end of the card slot, so that the internal workpiece is fixed within the external workpiece. The beneficial effects are that this structure can conveniently and smoothly lock the internal workpiece after it is inserted into the installation position of the external workpiece, prevent scratching of the inner wall of the external workpiece or the outer wall of the internal workpiece, and prevent cracks from occurring on the external workpiece due to the extrusion of the snap.

Description

Technical Field

[0001] The present invention relates to the technical field of snap fasteners for installation and fixation. More specifically, the present invention relates to an internal lever-type snap fastener structure. Background Art

[0002] For the existing method of fixing an internal workpiece after it is inserted into an external workpiece, a snap fastener connection method with corresponding male and female snaps is generally used, that is, a male or female snap is provided on the outer wall of the internal workpiece, and the female or male snap provided on the inner wall of the external workpiece is engaged. When the male snap slides into the female snap, the male snap is caught by the female snap and thus the internal workpiece is locked inside the external workpiece.

[0003] However, since the outer diameter of the internal workpiece where the male snap is located is larger than the inner diameter of the external workpiece, when the internal workpiece is inserted into the external workpiece, the male snap part needs to squeeze the inner wall of the external workpiece or expand the external workpiece outward, making it difficult for the internal workpiece to be pushed inward. When forced to push in, it is easy to scratch the inner wall of the external workpiece or the outer wall of the internal workpiece, and it is also easy to cause stress to the external workpiece due to squeezing the external workpiece, resulting in cracks in the external workpiece and causing damage to the external workpiece. Summary of the Invention

[0004] The purpose of the present invention is to provide an internal lever-type snap fastener structure, which, through the improvement of the conventional snap fastener structure, can overcome the deficiencies of the prior art and can lock the internal workpiece in the installation position of the external workpiece conveniently and smoothly after the internal workpiece is inserted into the external workpiece.

[0005] The technical solution of the present invention is realized as follows: An internal lever-type snap fastener structure includes a card slot provided on the inner wall of an external workpiece, a mounting groove provided on the outer wall of an internal workpiece, and a clamping block provided in the mounting groove. The internal workpiece is sleeved inside the external workpiece. The positions of the card slot and the mounting groove are relatively set. A convex strip is horizontally provided at the bottom of the mounting groove. The clamping block can perform a lever movement with the convex strip as a fulcrum. The bottom of the card slot is provided with an inclined surface inclined towards the inner wall of the external workpiece. During assembly, the internal workpiece with the clamping block can be inserted into the external workpiece without obstruction. The inclined surface of the card slot can push one end of the clamping block close to the bottom of the mounting groove. The other end of the clamping block rotates around the convex strip and contacts the bottom of the card slot and is clamped at the first end of the card slot. Thus, the internal workpiece is locked inside the external workpiece.

[0006] Preferably, the inner walls at both ends of the card slot of the external workpiece have different thicknesses, and the thickness of the second inner wall at the inclined surface end of the card slot is greater than the thickness of the first inner wall at the other end of the card slot.

[0007] Preferably, the surface of the clamping block in contact with the convex strip is a flat surface. At both ends of the side of the clamping block opposite to the card slot, they are respectively set as an angular end and an arc end. When the internal workpiece is sleeved into the external workpiece, the inclined surface of the card slot pushes the arc end of the clamping block close to the bottom of the installation groove, and the angular end of the clamping block rotates around the convex strip and touches the bottom of the card slot, and the clamping block is clamped at the first end of the card slot.

[0008] Preferably, the convex strip is an arc-shaped convex strip.

[0009] Preferably, first buckles are provided on both sides of the clamping block, and second buckles are provided on the outer sides of the inner walls of both sides of the installation groove relative to the positions of the first buckles. The second buckles block the first buckles to prevent the clamping block from falling out of the installation groove.

[0010] Preferably, the clamping block includes a flat surface and the side surfaces on both sides are integrally formed with the flat surface.

[0011] The beneficial effect of the built-in lever-type buckle structure of the present invention is that: a lever-type movable clamping block is provided on the inner wall of the internal workpiece, and a card slot with an inclined surface is provided on the inner wall of the external workpiece. The internal workpiece with the clamping block installed can be sleeved into the external workpiece without hindrance. When reaching the installation position, the inclined surface of the card slot can push one end of the clamping block to rotate around the convex strip and make the other end close to the bottom of the card slot and be clamped at the first end of the card slot, and thus the internal workpiece is locked in the external workpiece. Therefore, this structure can conveniently and smoothly lock the internal workpiece after sleeving it into the installation position of the external workpiece, prevent scratching the inner wall of the external workpiece or the outer wall of the internal workpiece, and prevent cracks from occurring on the external workpiece due to the extrusion of the buckle. Description of the Drawings

[0012] Figure 1 is an exploded view of the built-in lever-type buckle structure of the present invention;

[0013] Figure 2 is Figure 1 a partial enlarged view of

[0014] Figure 3 is a cross-sectional view of the built-in lever-type buckle structure of the present invention;

[0015] Figure 4 is Figure 3 a partial enlarged view of

[0016] Figure 5 is a cross-sectional view of the internal workpiece of the present invention;

[0017] Figure 6 is Figure 5 a partial enlarged view of

[0018] Figure 7Cross-sectional view of the external workpiece of the present invention;

[0019] Figure 8 is an attachment Figure 7 partial enlarged view of;

[0020] Figure 9 Front view of the clamping block of the present invention;

[0021] Figure 10 Side view of the clamping block of the present invention;

[0022] Figure 11 Top view of the clamping block of the present invention.

[0023] Component symbol description of the above drawings:

[0024] 001. External workpiece; 002. Internal workpiece; 1. Card slot; 10. First end of the card slot; 11. Card slot inclined surface; 12. First inner wall; 13. Second inner wall; 2. Installation groove; 20. Bottom of the installation groove; 21. Rib; 22. Second buckle; 3. Clamping block; 31. Flat surface of the clamping block; 32. Curved surface of the clamping block; 321. Angular end; 322. Arc end; 33. Side of the clamping block; 330. First buckle. Detailed implementation manners

[0025] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0026] The present invention has a built-in lever-type buckle structure. For the convenience of the following description, as shown in the figure, the built-in lever-type buckle structure is placed vertically upward. In this article, descriptions such as "up, down, upper part, lower part, upper end, lower end, left and right" of relevant components all refer to the positional relationship of each component when the wall surface at the connection of the external workpiece and the internal workpiece where the built-in lever-type buckle structure is located is placed vertically upward.

[0027] Embodiment

[0028] As Figure 1 , Figure 2 shown, the present invention has a built-in lever-type buckle structure, including a card slot 1 provided on the inner wall of the external workpiece 001, an installation groove 2 provided on the outer wall of the internal workpiece 002, and a clamping block 3 provided in the installation groove 2.

[0029] As Figures 3 - 6As shown in the figure, the internal workpiece 002 is sleeved downward inside the external workpiece 001. The positions of the card slot 1 and the installation groove 2 are relatively set. A rib 21 is horizontally provided at the bottom of the installation groove 2. The clamping block 3 can perform a lever movement with the rib 21 as the fulcrum. The bottom of the card slot 1 (i.e., the left side wall of the card slot 1 shown in the figure) is provided with an inclined surface 11 that inclines towards the second inner wall 13 of the external workpiece. During assembly, the internal workpiece 002 with the clamping block 3 can be smoothly sleeved downward into the external workpiece 001. The inclined surface 11 of the card slot 1 can push one end of the clamping block 3 (i.e., the lower end of the card slot 1 shown in the figure) close to the bottom of the installation groove 2 (i.e., the right side of the installation groove 2 shown in the figure). The other end of the clamping block 3 (i.e., the upper end of the clamping block 3 shown in the figure) rotates counterclockwise around the rib 21 and finally touches the bottom of the card slot 1 and is clamped at the first end 10 of the card slot 1 (i.e., the upper end shown in the figure). Thus, the internal workpiece 002 is locked inside the external workpiece 001.

[0030] As Figure 7 shown in the figure, the outer wall of the external workpiece 001 has the same outer diameter, while the inner walls at both ends of the card slot 1 have different thicknesses. The thickness of the second inner wall 13 at the inclined surface end of the card slot 1 is greater than the thickness of the first inner wall 12 at the other end of the card slot 1. That is, the inner diameter of the second inner wall 13 of the external workpiece 001 at the connection with the inclined surface 11 of the card slot is smaller than the inner diameter of the first inner wall 12 of the external workpiece 001 at the connection with the other end of the card slot 1. This structure can make the inclined surface 11 of the card slot 1 extend and lengthen towards the inside. When the internal workpiece 002 with the clamping block 3 is sleeved into the external workpiece, the outside of the clamping block 3 does not need to protrude from the outer wall of the internal workpiece 002. When the lower end of the clamping block 3 reaches the lowest end of the lengthened inclined surface 11, the inclined surface 11 can make the clamping block 3 rotate counterclockwise around the rib 21. Therefore, this structure can make the clamping block 3 hidden in the installation groove 2 when the internal workpiece 002 is sleeved into the external workpiece 001, without protruding from the outer surface of the internal workpiece 002, without squeezing the first inner wall 12 of the external workpiece 001, and without hindering the advancement of the internal workpiece 002 towards the inside of the external workpiece 001. After reaching the installation position, the clamping block 3 performs a lever movement and is locked in the card slot 1.

[0031] As Figures 3 - 11As shown, the surface of the clamping block 3 in contact with the convex strip 21 is a flat surface 31, and the surface of the clamping block 3 opposite to the card slot 1 is a curved surface 32. The upper and lower ends of the curved surface 32 are respectively set as an angular end 321 and an arc end 322. When the internal workpiece 002 is sleeved into the external workpiece 001, the inclined surface 11 of the card slot 1 pushes the arc end 322 of the clamping block 3 close to the bottom 20 of the installation groove 2. The angular end 321 of the clamping block 3 rotates around the convex strip 21 and contacts the bottom of the card slot 1, and the clamping block 3 is clamped at the first end 10 of the card slot. The clamping block 3 of the present invention is provided with an arc end 322, which facilitates the clamping block 3 to slide downward on the inclined surface 11 of the card slot 1 when entering the card slot 1, making it easy to install. And it is provided with an angular end 321, which facilitates the angular end 321 to abut against the bottom of the card slot 1. The upper end 10 wall surface of the card slot 1 can easily catch the angular end with a sharp angle and will not slide easily, preventing the clamping block 3 from sliding upward and disengaging from the card slot 1.

[0032] As Figures 1 - 6 shown, the convex strip 21 is an arc-shaped convex strip. The arc-shaped convex strip design can better make the convex strip 21 serve as the lever fulcrum of the clamping block 3, and the clamping block 3 can easily rotate around the convex strip 21.

[0033] As Figures 2 - 4 、 Figures 9 - 11 shown, the two sides of the clamping block 3 are provided with first buckles 330, and the outer sides of the two inner walls of the installation groove 2 relative to the positions of the first buckles 330 are provided with second buckles 22. The second buckles block the first buckles to prevent the clamping block 3 from falling out of the installation groove 2.

[0034] As Figures 9 - 11 shown, the clamping block 3 includes a flat surface 31 and side surfaces 33 on both sides, which are integrally formed by the flat plate. In this way, the clamping block 3 becomes a hollow structure. The clamping block 3 is lighter in mass, can save materials, and can be rotated and clamped in the card slot 1 more easily. The clamping block 3 can be made of plastic material or stainless steel plate.

[0035] The above description is only the preferred embodiment of the present invention, and the above specific embodiments are not limitations on the present invention. Within the scope of the technical idea of the present invention, various deformations and modifications can occur. Any retouching, modification or equivalent replacement made by those of ordinary skill in the art according to the above description shall fall within the scope protected by the present invention.

Claims

1. An internal lever - type snap - lock structure, characterized in that: It includes a clamping groove provided on the inner wall of an external workpiece, a mounting groove provided on the outer wall of an internal workpiece, and a clamping block provided in the mounting groove. The internal workpiece is sleeved inside the external workpiece. The positions of the clamping groove and the mounting groove are relatively set. A rib is horizontally provided at the bottom of the mounting groove. The clamping block can perform a lever movement with the rib as a fulcrum. An inclined surface is provided at the bottom of the clamping groove and slopes towards the inner wall of the external workpiece. During assembly, the internal workpiece with the clamping block can be sleeved into the external workpiece without obstruction. The inclined surface of the clamping groove can push one end of the clamping block close to the bottom of the mounting groove. The other end of the clamping block rotates around the rib and touches the bottom of the clamping groove and is clamped at the first end of the clamping groove. Thus, the internal workpiece is locked inside the external workpiece; The inner walls at both ends of the clamping groove of the external workpiece have different thicknesses. Among them, the thickness of the second inner wall at the inclined surface end of the clamping groove is greater than the thickness of the first inner wall at the first end of the clamping groove; The surface of the clamping block in contact with the rib is a flat surface. The two ends of the side of the clamping block opposite to the clamping groove are respectively set as an angular end and an arc end. When the internal workpiece is sleeved into the external workpiece, the inclined surface of the clamping groove pushes the arc end of the clamping block close to the bottom of the mounting groove. The angular end of the clamping block rotates around the rib and touches the bottom of the clamping groove. The clamping block is clamped at the first end of the clamping groove.

2. The built-in lever-type snap structure according to claim 1, wherein: The rib is an arc-shaped rib.

3. The built-in lever-type buckle structure according to claim 1, characterized in that: First convex buttons are provided on both sides of the clamping block. Second convex buttons are provided on the outer sides of the inner walls on both sides of the mounting groove at positions corresponding to the first convex buttons. The second convex buttons block the first convex buttons to prevent the clamping block from falling out of the mounting groove.

4. The built-in lever-type snap structure according to claim 1, characterized in that: The clamping block includes a flat surface and side surfaces on both sides. The clamping block is integrally formed from a flat plate.

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