A cabinet door tensioning type butterfly clasp

Abstract

The application provides a cabinet door tension type butterfly buckle, and belongs to the technical field of locks. The cabinet door tension type butterfly buckle comprises a cover, a butterfly handle, a first hook piece, a second hook piece, a clamping piece and a torsion spring. The cover is sleeved on the first hook piece, the butterfly handle is installed on the cover through a push piece, a circular through hole is arranged on the push piece, the butterfly handle and the first hook piece are respectively located on two sides of the cover, an assembly groove is arranged on the first hook piece, an eccentric shaft passes through the assembly groove and the circular through hole, and eccentric and linkage connection of the first hook piece and the butterfly handle is realized. The second hook piece is arranged above the first hook piece and is fixed on a cabinet body or a cabinet door. The clamping piece is arranged below the cover and is fixed on the cabinet door or the cabinet body, a clamping groove corresponding to the butterfly handle is arranged on the clamping piece, and the clamping piece and the cover are connected through the torsion spring. The butterfly buckle has the advantages of automatic tension and stable locking.

Description

Technical Field

[0001] This application relates to a cabinet door latch-type butterfly latch, belonging to the field of lock technology. Background Technology

[0002] Butterfly hooks, also known as butterfly locks or butterfly lock cylinders, are mainly used in bags, machinery, cabinets, and other components. Their locking mechanism relies on the interlocking of a pair of hooks, offering advantages such as simple operation and stable locking. However, traditional butterfly hooks suffer from drawbacks such as easy deformation, tendency to loosen under stress, and insensitive rotation control. Utility Model Content

[0003] In view of this, this application provides a cabinet door tightening butterfly latch, which has the advantages of automatic tightening and stable locking when locked.

[0004] Specifically, this application is implemented through the following scheme: A cabinet door latching butterfly buckle includes a cover, a butterfly handle, a first hook, a second hook, a locking element, and a torsion spring. The cover is fitted onto the first hook piece, and the butterfly handle is mounted on the cover through a paddle. The paddle has a circular through hole, and the butterfly handle and the first hook piece are located on opposite sides of the cover. The first hook plate is provided with an assembly groove, which is an elongated oval groove. The eccentric shaft passes through the assembly groove and the circular through hole to realize the eccentric (i.e., the rotation center of the butterfly handle and the installation position of the eccentric shaft are not on the same axis) linkage connection between the first hook plate and the butterfly handle. A second hook is provided above the first hook, and a first hook and a second hook are respectively provided at corresponding positions of the two. The second hook is fixed to the cabinet body or cabinet door. A latching component is provided below the cover, and the latching component is fixed on the cabinet door or cabinet body. A slot corresponding to the butterfly handle is provided on it. The engaging component is provided with two pairs of torsion spring holes, both of which are oblong holes. The free end of the torsion spring is inserted into the torsion spring hole to achieve the connection between the engaging component and the cover.

[0005] Furthermore, as a preferred option: The cover is provided with side edging and bottom edging on both sides and bottom respectively. The side edging is fitted on both sides of the first hook piece so that the cover is mounted on the first hook piece. The bottom edging is provided in correspondence with one set of torsion spring holes. One free end of the torsion spring hole is inserted into one set of torsion spring holes, and the other free end is inserted into another torsion spring hole and the bottom edging, so as to realize the connection of the torsion spring between the locking part and the cover.

[0006] The second hook piece is provided with a buckle groove, which is provided in correspondence with the first hook piece.

[0007] The torsion spring hole includes a first torsion spring hole and a second torsion spring hole. The first torsion spring hole is located at the top and is vertically arranged. The second torsion spring hole is located at the bottom and is inclined along its length. At this time, the first torsion spring hole is correspondingly arranged with the bottom edge, and the bottom edge and the first torsion spring hole form an insertion port for one movable end of the torsion spring. The second torsion spring hole is the other insertion port.

[0008] The torsion spring includes a first torsion spring and a second torsion spring that are independent of each other, and the first torsion spring and the second torsion spring are respectively installed on both sides of the engaging member.

[0009] The eccentric shaft includes a first section and a shaft cover. The outer diameter of the first section is smaller than that of the shaft cover. A flat surface is provided on the first section. The first section passes through a mounting groove and a circular through hole. The shaft cover covers the mounting groove and is positioned on either side of the butterfly handle. More preferably, a second section is also included between the first section and the shaft cover. The outer diameter of the second section is smaller than that of the shaft cover but larger than that of the first section. A flat surface is also provided on the second section. Preferably, the outer diameter of the first section matches the circular through hole, and the outer diameter of the second section matches the minimum inner diameter of the mounting groove.

[0010] The cover is provided with an installation groove, and a gasket is installed in the installation groove. The lever is connected to the gasket, and the butterfly handle is connected to the lever, so as to realize the installation of the butterfly handle on the cover.

[0011] A cover is fastened to the lever.

[0012] The paddle has grooves on both sides, and a buckle is provided on the butterfly handle at the corresponding position. The buckle is inserted into the groove to connect the butterfly handle and the paddle.

[0013] The butterfly handle is provided with a waist, which corresponds to the slot, so that when the butterfly handle is flat, the waist and the slot are connected by a buckle.

[0014] The butterfly handle can also be provided with a gripping part, such as opening a hole in the butterfly handle to form a gripping groove, so as to facilitate the gripping of the butterfly handle. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application.

[0016] Figure 1 This is a three-dimensional structural diagram of the present application; Figure 2 This is a schematic diagram of the rear structure of this application; Figure 3 for Figure 2 Cross-sectional view along the AA direction (with the retaining parts and some torsion springs removed); Figure 4This is a schematic diagram of the split structure of this application; Figure 5 This is a schematic diagram of the structure in the locked state of this application; Figure 6 This is a schematic diagram of the unlocked state of this application.

[0017] Numbered in the diagram: 1. Cover; 11. Mounting slot; 12. Side edge; 13. Bottom edge; 2. Butterfly handle; 201. Waist; 202. Grip; 203. Buckle; 21. Paddle; 211. Boss 1; 212. Through hole 1; 213. Groove; 22. Washer; 221. Boss 2; 222. Through hole 2; 23. Cover; 231. Through hole 3; 232. Through hole 4; 3. First hook; 31. First hook; 3 2. Assembly slot; 33. Eccentric shaft; 331. First section; 3311. Plane; 332. Second section; 333. Shaft cover; 4. Second hook piece; 41. Second hook; 42. Mounting hole; 43. Snap groove; 5. Snap fastener; 51. Torsion spring hole; 511. First torsion spring hole; 512. Second torsion spring hole; 52. Snap groove; 6. Torsion spring; 61. First torsion spring; 611. Free end one; 612. Free end two; 62. Second torsion spring. Detailed Implementation

[0018] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the technical solutions in the embodiments of this application will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit the technical solutions of this application. All other embodiments obtained by those skilled in the art based on the embodiments in this application without creative effort are within the scope of protection of this application.

[0019] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be located directly or indirectly on that other component. When a component is referred to as "connected to" another component, it can be directly or indirectly connected to that other component. The terms "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or position based on the orientation or position shown in the accompanying drawings, and are only for ease of description and should not be construed as limiting the present technical solution.

[0020] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or specifying the number of technical features. "A plurality of" means two or more, unless otherwise explicitly defined.

[0021] This embodiment describes a cabinet door latching butterfly buckle, combined with... Figures 1 to 3 It includes a cover 1, a butterfly handle 2, a first hook piece 3, a second hook piece 4, a locking piece 5, and a torsion spring 6.

[0022] Combination Figure 4 : The cover 1 has side edging 12 on both sides, and the bottom is rolled inward to form a hollow bottom edging 13. The cover 1 has a through mounting groove 11 in the middle.

[0023] The butterfly handle 2 has a concave star-shaped waist 201 on one side and a groove on the other side, with a pair of buckles 203 symmetrically arranged on both sides of the groove.

[0024] The top of the first hook piece 3 is bent downward to form the first hook 31, and an assembly groove 32 is provided in the middle. The assembly groove 32 is a horizontally arranged (i.e., the length direction is horizontal) elongated oval groove.

[0025] The eccentric shaft 33 includes a first section 331, a second section 332, and a shaft cover 333. Both the first section 331 and the second section 332 are cylindrical structures, but a plane 3311 is provided on the same side.

[0026] The bottom of the second hook piece 4 curves upward to form a second hook 41. Several mounting holes 42 are provided on the second hook piece 4. By screwing screws into the mounting holes 42, the second hook piece 4 is fixed to the cabinet. After fixing, the opening of the second hook 41 faces outward.

[0027] The assembly components of the aforementioned cover 1, butterfly handle 2, and first hook piece 3 mainly include a paddle 21 and a washer 22: the paddle 21 is provided with a boss 211 and a through hole 212, and has grooves 213 on both sides; the washer 22 is provided with a boss 221 and a through hole 222, both of which are smaller than the assembly groove 32. The outer diameter of the first section 331 is adapted to the inner diameter of the through hole 212 and the through hole 222, and the second section 332 is adapted to the inner diameter of the assembly groove 32.

[0028] Assembly of cover 1, butterfly handle 2 and first hook piece 3: Insert the paddle 21 and washer 22 into the mounting groove 11. The first section 331 of the eccentric shaft 33 passes through the second through hole 222 and the first through hole 212 and protrudes above the paddle 21. During this process, the second section 332 is just stuck in the mounting groove 32. The plane 3311 prevents the eccentric shaft 33 from sliding during rotation. The second boss 221 is engaged with the recessed space on the back of the first boss 211 to achieve a fastening connection between the two. The buckle 203 of the butterfly handle 2 is engaged with the groove 213. When the butterfly handle 2 is rotated, the fastening connection between the first boss 211 and the second boss 221 of the paddle 21 drives the paddle 21 and the gasket 22 to rotate relative to the cover 1, avoiding jamming. The above-mentioned adaptation of the eccentric shaft 33 with the second through hole 222, the first through hole 212, and the mounting groove 32 allows it to rotate together with the paddle 21 and the butterfly handle 2. Because it is eccentrically set relative to the rotation center of the paddle 21, the rotation drives the first hook 3 to move up and down relative to the second hook 4 through the mounting groove 32, thereby realizing the disengagement or engagement of the first hook 31 and the second hook 41.

[0029] The latching component 5 is also provided with mounting holes. By screwing screws into the mounting holes, the latching component 5 can be fixed to the cabinet door (when the second hook piece 4 is fixed to the cabinet door, the latching component 5 is fixed to the cabinet body). The latching component 5 and the butterfly handle 2 are provided with two outwardly protruding sidewalls on the same side. The sidewalls are provided with slots 52 at the positions corresponding to the waist 201. The sidewalls are also provided with two pairs of torsion spring holes 51: the first torsion spring hole 511 and the second torsion spring hole 512, both of which are oblong holes. The first torsion spring hole 511 is located at the top and is set vertically along the sidewall; the second torsion spring hole 512 is located at the bottom and is set obliquely along the sidewall, and the second torsion spring hole 512 is set corresponding to the bottom edge 13 of the cover 1.

[0030] The torsion spring 6 comprises two independent springs: a first torsion spring 61 and a second torsion spring 62, both of which have the same structure.

[0031] Installation of torsion spring 6: Insert the free end 611 of the first torsion spring 61 into the first torsion spring hole 511, and the free end 612 into the second torsion spring hole 512 and the bottom edge 13; the second torsion spring 62 is installed on the other side of the locking part 5.

[0032] The locking state of the butterfly snap in this application includes two stages, the first stage as follows: Figure 1 , Figure 2 As shown: The butterfly handle 2 is in a horizontal position, with the first hook 31 engaged in the second hook 41; when the butterfly handle 2 is turned, the buckle 203 of the butterfly handle 2 rotates in the groove 213 until the butterfly handle 2 falls to the position shown. Figure 5In the second stage of the vertical state shown, the waist 201 of the butterfly handle 2 is fastened in the slot 52 of the locking piece 5. The torsion spring 6 is in the open state in the first torsion spring hole 511 and the second torsion spring hole 512. This opening action gives the bottom edge 13 a downward force, which drives the cover 1 downward. The eccentric shaft 33 passing through the cover 1 drives the first hook piece 3 to move downward, so that the first hook 31 is tightly engaged with the second hook 41, realizing the automatic tightening of the locking process.

[0033] The unlocked state of the butterfly clasp in this application is as follows: Figure 6 As shown: Move the butterfly handle 2 to the locked position as described above. Figure 1 In this state, rotate 90˚. Due to the eccentric setting between the eccentric shaft 33 and the rotation axis of the lever 21, as the eccentric shaft 33 moves along the mounting groove 32, its plane engages with the mounting groove 32, causing the mounting groove 32 to rotate accordingly. This gradually causes the first hook 3 to move upward, and the first hook 31 rises and gradually disengages from the second hook 41 until it reaches the second hook 41. Figure 6 The fully unlocked state is shown.

[0034] The above-described embodiments are merely illustrative of several feasible implementations of the present invention, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of the present invention, nor are the embodiments intended to limit the scope of protection in the claims of the present invention. For those skilled in the art, various modifications and improvements can be made without departing from the concept of the present invention. All equivalent implementations or changes that do not depart from the present invention should be included in the technology of the present invention.

Claims

1. A type of latching butterfly buckle for cabinet doors, characterized in that: Includes a cover, butterfly handle, first hook plate, second hook plate, locking mechanism, and torsion spring. The cover is fitted onto the first hook piece, and the butterfly handle is mounted on the cover through a paddle. The paddle has a circular through hole, and the butterfly handle and the first hook piece are located on opposite sides of the cover. The first hook plate is provided with an assembly groove, which is an elongated oval groove. An eccentric shaft passes through the assembly groove and a circular through hole to achieve an eccentric and linkage connection between the first hook plate and the butterfly handle. A second hook is provided above the first hook, and a first hook and a second hook are respectively provided at corresponding positions of the two. The second hook is fixed to the cabinet body or cabinet door. A latching component is provided below the cover, and the latching component is fixed on the cabinet door or cabinet body. A slot corresponding to the butterfly handle is provided on it. The engaging component is provided with two pairs of torsion spring holes, both of which are oblong holes. The free end of the torsion spring is inserted into the torsion spring hole to achieve the connection between the engaging component and the cover.

2. The cabinet door latching butterfly buckle according to claim 1, characterized in that: The cover is provided with side edging and bottom edging on both sides and bottom respectively. The side edging is fitted on both sides of the first hook piece so that the cover is mounted on the first hook piece. The bottom edging is provided in correspondence with one set of torsion spring holes. One free end of the torsion spring hole is inserted into one set of torsion spring holes, and the other free end is inserted into another torsion spring hole and the bottom edging, so as to realize the connection of the torsion spring between the locking part and the cover.

3. A cabinet door latching butterfly buckle according to claim 1 or 2, characterized in that: The torsion spring hole includes a first torsion spring hole and a second torsion spring hole. The first torsion spring hole is located at the top and is vertically arranged; the second torsion spring hole is located at the bottom and is inclined along its length.

4. A cabinet door latching butterfly buckle according to claim 1 or 2, characterized in that: The torsion spring includes a first torsion spring and a second torsion spring that are independent of each other, and the first torsion spring and the second torsion spring are respectively installed on both sides of the engaging member.

5. A cabinet door latching butterfly buckle according to claim 1, characterized in that: The eccentric shaft includes a first section and a shaft cover. The outer diameter of the first section is smaller than that of the shaft cover. A flat surface is provided on the first section. The first section passes through the assembly groove and the circular through hole. The shaft cover covers the assembly groove and is located on both sides of the butterfly handle.

6. A cabinet door latching butterfly buckle according to claim 5, characterized in that: The first section and the shaft cover are further divided into a second section. The outer diameter of the second section is smaller than that of the shaft cover but larger than that of the first section. The second section also has a flat surface.

7. A cabinet door latching butterfly buckle according to claim 6, characterized in that: The outer diameter of the first section is adapted to the circular through hole, and the outer diameter of the second section is adapted to the minimum inner diameter of the assembly groove.

8. The cabinet door latching butterfly buckle according to claim 1, characterized in that: The cover is provided with an installation groove, and a gasket is installed in the installation groove. The lever is connected to the gasket, and the butterfly handle is connected to the lever, so as to realize the installation of the butterfly handle on the cover.

9. A cabinet door latching butterfly buckle according to claim 1, characterized in that: The paddle has grooves on both sides, and a buckle is provided on the butterfly handle at the corresponding position. The buckle is inserted into the groove to connect the butterfly handle and the paddle.

10. A cabinet door latching butterfly buckle according to claim 1, characterized in that: The butterfly handle is provided with a waist, which corresponds to the slot, so that when the butterfly handle is flat, the waist and the slot are connected by a buckle.

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