Back linkage locking folding knife
By introducing a back linkage lock and snap shaft structure into the folding knife, and using the elastic drive lock to contact the blade, the problem of rapid closing of the existing folding knife is solved, and a simple and fast folding knife design is achieved.
Patent Information
- Application Number
- CN202420092809.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-15
- Publication Date
- 2025-01-10
- Estimated Expiration
- 2034-01-15
AI Technical Summary
The existing folding knives adopt spring lock and back lock structures, which cannot be closed quickly, limiting the operating space.
A back-linked locking folding knife is designed, adopting a back-linked locking member and a snap shaft structure. By elastically driving the back-linked locking member to contact the concave surface and convex surface of the tail of the folding knife blade, achieving rapid opening and closing.
It realizes the quick opening or closing of the folding knife, which is simple to operate and is suitable for use by hand, solving the problem of inconvenient use of the existing folding knife.
Smart Images
Figure CN222328265U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of folding knives, and in particular to a back-linked locking folding knife. Background Art
[0002] Folding knives are tools that are often used in production, camping, mountaineering, hiking, fishing, self-defense, decoration, travel, wilderness survival, daily life, military combat, and outdoor activities. Since the folding knife can be folded to reduce the overall size of the folding knife, it is very convenient to carry when going out.
[0003] Based on the above, the present invention finds that there are the following problems: most of the existing folding knives use a spring lock and a back lock structure to lock the folding knife blade. Folding knives with this structure cannot be closed quickly, thereby limiting the operating space of the folding knife.
[0004] Therefore, in view of this, the existing structure and defects are studied and improved, and a folding knife with back linkage locking is provided, so as to achieve the purpose of having more practical value. Utility Model Content
[0005] In order to solve the above-mentioned background technology problems, the utility model provides a folding knife with back linkage locking to solve the problems raised by the background technology. The utility model is implemented through the following technical solutions:
[0006] The utility model provides a back-linked locking folding knife, the back-linked locking folding knife comprising a folding knife handle and a folding knife blade movably connected to the folding knife handle, the tail of the folding knife blade is provided with a first concave surface, the tail of the folding knife blade is provided with a second concave surface diagonally to the first concave surface, and a first main shaft hole is provided between the first concave surface and the second concave surface of the tail of the folding knife blade;
[0007] A second spindle hole is provided in the middle of the front end of the folding knife handle, a limiting shaft is provided at the upper end of the second spindle hole at the front end of the folding knife handle, a back linkage lock is provided on the right side of the limiting shaft at the front end of the folding knife handle, a notch is provided on the right side of the back linkage lock of the folding knife handle, and a back linkage locking mechanism is provided in the notch;
[0008] The back linkage locking mechanism includes a left handle piece, a right handle piece, a left back locking piece, a right back locking piece, a buckle shaft, and a bottom bone. The left handle piece and the right handle piece are connected to both sides of the tail end of the bottom bone with screws, the tail ends of the left back locking piece and the right back locking piece are connected to both sides of the front end of the bottom bone with screws, and the buckle shaft is connected to the middle of the front end of the left back locking piece and the right back locking piece with screws.
[0009] Furthermore, a first convex surface is provided on the left side of the back linkage lock element, a second convex surface is provided on the bottom of the back linkage lock element, and a third concave surface is provided diagonally to the first convex surface of the back linkage lock element.
[0010] Furthermore, the second main shaft hole at the front end of the folding knife handle corresponds to the first main shaft hole on the folding knife blade and a main shaft nail is used to pass through the folding knife blade to flexibly connect the folding knife blade.
[0011] Furthermore, the limiting shaft is fixedly arranged in front of the back linkage lock piece of the folding knife handle and contacts the tail of the folding knife blade.
[0012] Furthermore, the back linkage lock piece is movably arranged behind the limiting shaft and can rotate back and forth 360 degrees, and the back linkage lock piece is in contact with the tail of the folding knife blade and the buckle shaft.
[0013] Furthermore, the front ends of the left back locking plate and the right back locking plate are connected to the buckle shaft, and the rear ends of the left back locking plate and the right back locking plate are fixedly connected to the front end of the bottom bone and have elastic force that can press the buckle shaft and the back linkage lock piece.
[0014] The beneficial effects of the utility model are as follows: the utility model connects the left back lock piece and the right back lock piece on both sides of the bottom bone, and then arranges a buckle shaft in the middle of the front ends of the left back lock piece and the right back lock piece, and the buckle shaft is pressed by the elastic force of the bottom bone to contact the second concave surface of the back linkage lock piece, and when the folding knife blade is opened, the folding knife blade is fixed as a center point by the parent and child nails to rotate and drive the back linkage lock piece to rotate, and the first concave surface and the second concave surface of the tail of the folding knife blade contact the first convex surface and the second convex surface of the back linkage lock piece, effectively solving the trouble of using a spring lock and a back lock folding knife that must be operated by operating a switch before it can be used. The utility model replaces the inconvenience of using a spring lock and a back lock folding knife with a back linkage lock piece, so that the folding knife can be quickly opened or closed, and its operation is simple, playable, and easy to understand, and can be operated by both novice and experienced hands, effectively solving the problems of the background technology. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.
[0016] Figure 1 A schematic diagram of the structure of a folding knife with back linkage locking provided by the utility model;
[0017] Figure 2 A schematic diagram of the exploded structure of a folding knife with back linkage locking provided by the utility model;
[0018] Figure 3 A schematic diagram of the internal structure of a folding knife with back linkage locking provided by the utility model;
[0019] Figure 4 A schematic diagram of the structure of a folding knife with a back-linked locking blade folded into a handle provided by the utility model;
[0020] Figure 5 The utility model provides a schematic structural diagram of a back-linked locking member of a folding knife structure with back-linked locking.
[0021] In the figure: 5, folding knife handle; 6, folding knife blade; 7, first concave surface; 8, second concave surface; 9, first spindle hole; 10, second spindle hole; 11, limit axis; 12, back linkage lock member; 13, notch; 25, back linkage lock mechanism; 26, left handle piece; 27, right handle piece; 28, left back handle piece; 29, right back handle piece; 30, buckle axis; 31, bottom bone; 32, screw; 33, first convex surface; 36, second convex surface; 55, third concave surface; 56, parent-child nail; 57, stop nail. DETAILED DESCRIPTION
[0022] In order to make the purpose, technical solution and advantages of the implementation mode of the utility model clearer, the technical solution in the implementation mode of the utility model will be clearly and completely described below in combination with the drawings in the implementation mode of the utility model. However, in order to better illustrate this embodiment, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted. The positional relationship described in the drawings is only for exemplary description and cannot be understood as a limitation of this patent.
[0023] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "front", "rear", "wide", "narrow", "up", "down", "left", "right", "long", "short", "top", "bottom", "first", "second", "third" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.
[0024] The terms "by", "including", "comprising", "having", "containing", "provided with", "and", etc. used in this article are all open terms and have no technical connection with this patent.
[0025] It should be noted that, in the absence of conflicts, the features in the embodiments and implementations of this application can be combined with each other, and the following detailed description of the embodiments of the utility model provided in the accompanying drawings is not intended to limit the scope of the utility model claimed for protection, but merely represents the selected embodiments of the utility model. Based on the embodiments of 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.
[0026] like Figure 1 to Figure 5 As shown, the utility model provides a folding knife with back linkage locking, the folding knife with back linkage locking comprises a folding knife handle 5 and a folding knife blade 6 movably connected to the folding knife handle, the tail of the folding knife blade is provided with a first concave surface 7, the tail of the folding knife blade is provided with a second concave surface 8 diagonally to the first concave surface, and a first spindle hole 9 is provided between the first concave surface and the second concave surface of the tail of the folding knife blade; the middle of the front end of the folding knife handle is provided with a second spindle hole 10, the upper end of the second spindle hole at the front end of the folding knife handle is provided with a limiting shaft 11, and the right side of the limiting shaft at the front end of the folding knife handle is provided with a back A linkage lock 12, a notch 13 is provided on the right side of the back linkage lock of the folding knife handle, and a back linkage locking mechanism 25 is provided in the notch; the back linkage locking mechanism includes a left handle piece 26, a right handle piece 27, a left back locking piece 28, a right back locking piece 29, a buckle shaft 30, and a bottom bone 31, the left handle piece and the right handle piece are connected at both sides of the tail end of the bottom bone by screws 32 through stop pins 57, the tail ends of the left back locking piece and the right back locking piece are connected at both sides of the front end of the bottom bone by screws through stop pins, and the buckle shaft is connected in the middle of the front ends of the left back locking piece and the right back locking piece by screws.
[0027] Preferably, a first convex surface 33 is provided on the left side of the back interlocking locking element, a second convex surface 36 is provided on the bottom of the back interlocking locking element, and a third concave surface 55 is provided diagonally to the first convex surface of the back interlocking locking element.
[0028] Preferably, the second spindle hole at the front end of the folding knife handle corresponds to the first spindle hole on the folding knife blade and a pin 56 is passed through to movably connect the folding knife blade.
[0029] Preferably, the limiting shaft is fixed in front of the back linkage lock of the folding knife handle and contacts the tail of the folding knife blade.
[0030] Preferably, the back linkage lock piece is movably arranged behind the limiting shaft and can rotate back and forth 360 degrees, and the back linkage lock piece is in contact with the tail of the folding knife blade and the buckle shaft.
[0031] Preferably, the front ends of the left back locking plate and the right back locking plate are connected to the buckle shaft, and the rear ends of the left back locking plate and the right back locking plate are fixedly connected to the front end of the bottom bone and have elastic force that can press the buckle shaft and the back linkage lock piece.
[0032] Preferably, the folding knife blade 6 is supported on the third concave surface 55 provided on the back linkage lock member 12 regardless of whether the buckle shaft is opened or closed, providing sufficient elastic force to lock the folding knife blade 6.
[0033] The following is a brief description of the workflow of the utility model. When the utility model needs to be used, first Figure 4 The 6-blade folding knife opens to Figure 3 In this state, the first concave surface 7 provided at the tail of the folding knife blade is locked with the first convex surface 33 and the second convex surface 36 provided on the back linkage lock member 12 to lock the folding knife blade 6, ensuring that the folding knife blade is not folded back when it is used. When the utility model is not needed, Figure 3 The folding knife blade 6 in the state is folded in the handle 5, as Figure 4 As shown, at this time, the second concave surface 8 provided at the tail of the folding knife blade 6 is locked with the first convex surface 33 and the second convex surface 36 provided on the back linkage lock member 12 to lock the folding knife blade 6, effectively eliminating the phenomenon that the folding knife blade will not open automatically when carrying it out, and achieving the effect of locking the folding knife blade 6 by using the back linkage lock member 12 without a switch.
[0034] The above description is only the preferred implementation of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. 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 folding knife with back linkage locking, comprising a folding knife handle (5) and a folding knife blade (6) movably connected to the folding knife handle, characterized in that: The tail of the folding knife blade is provided with a first concave surface (7), the tail of the folding knife blade is provided with a second concave surface (8) diagonally to the first concave surface, and a first spindle hole (9) is provided between the first concave surface and the second concave surface of the tail of the folding knife blade; A second spindle hole (10) is provided in the middle of the front end of the folding knife handle, a limiting shaft (11) is provided at the upper end of the second spindle hole at the front end of the folding knife handle, a back linkage lock member (12) is provided on the right side of the limiting shaft at the front end of the folding knife handle, a notch (13) is provided on the right side of the back linkage lock member of the folding knife handle, and a back linkage locking mechanism (25) is provided in the notch; The back linkage locking mechanism comprises a left handle piece (26), a right handle piece (27), a left back locking piece (28), a right back locking piece (29), a buckle shaft (30), and a bottom bone (31). The left handle piece and the right handle piece are connected to both sides of the tail end of the bottom bone by screws (32), the tail ends of the left back locking piece and the right back locking piece are connected to both sides of the front end of the bottom bone by screws, and the buckle shaft is connected to the middle of the front ends of the left back locking piece and the right back locking piece by screws.
2. A folding knife with back linkage locking according to claim 1, characterized in that: The back interlocking lock element has a first convex surface (33) on its left side, a second convex surface (36) on its bottom, and a third concave surface (55) diagonally disposed between the back interlocking lock element and the first convex surface.
3. A folding knife with back linkage locking according to claim 1, characterized in that: The second main shaft hole at the front end of the folding knife handle corresponds to the first main shaft hole on the folding knife blade and a main and secondary nail (56) are passed through to flexibly connect the folding knife blade.
4. A folding knife with back linkage locking according to claim 1, characterized in that: The limiting shaft is fixedly arranged in front of the back linkage lock piece of the folding knife handle and contacts with the tail of the folding knife blade.
5. A folding knife with back linkage locking according to claim 1, characterized in that: The back linkage lock piece is movably arranged behind the limiting shaft and can rotate back and forth 360 degrees. The back linkage lock piece is in contact with the tail of the folding knife blade and the buckle shaft.
6. A folding knife with back linkage locking according to claim 1, characterized in that: The front ends of the left back locking piece and the right back locking piece are connected to the buckle shaft, and the tail ends of the left back locking piece and the right back locking piece are fixedly connected to the front end of the bottom bone and have elastic force that can make the buckle shaft contact and press the back linkage lock piece.