A double blade utility knife

Abstract

The utility model belongs to the technical field of utility knives, and particularly relates to a double-blade utility knife. A double-blade utility knife comprises a shell, a knife slidably arranged in the shell, a blade and a push button arranged on the knife slid, a knife holder that can slide along the width direction of the shell is arranged in the shell, and push blocks are arranged on both sides of the knife holder, and the push blocks can be slidably arranged in the shell; two knife slids are slidably embedded in the knife holder in parallel with each other along the length direction of the shell, and a limiting groove with an upper end opening is provided on each of the knife slids, and when the push block is pushed, the lower part of the push button can be slidably arranged in each limiting groove; when the push button is arranged in a certain limiting groove, pushing the push button can drive the corresponding knife slid and blade to slide along the length direction of the shell, so that the blade extends out of the shell from the blade outlet. The utility model has a simple structure, is easy to operate, integrates two blades, and can select one blade to be pushed out for use.

Description

Technical Field

[0001] The utility model belongs to the technical field of utility knives, in particular to a double-blade utility knife. Background Art

[0002] Existing utility knives, such as the Chinese invention patent application with application number 201911266874.0 and patent name Utility Knife, mainly include a blade, a handle switch and a knife housing, the knife housing is provided with a knife groove for the blade to slide with; the knife housing is provided with an opening for the handle switch to slide with; the blade is connected to the handle switch, and the knife housing is provided with a plurality of grooves, and the plurality of grooves are arranged in two rows basically in parallel; a first elastic buckle and a second elastic buckle are respectively provided on both sides of the handle switch, and the first elastic buckle can be embedded in a row of grooves; the second elastic buckle can be embedded in another row of grooves; the handle switch is provided with a locking and unlocking structure that can make the first elastic buckle or the second elastic buckle escape from the groove.

[0003] When the utility knife is actually used, different blades are used in different usage scenarios, such as utility blades, hook blades, etc., but the utility knife in the prior art has a relatively single function and can only be installed with one type of blade. Therefore, it is necessary to purchase different types of utility knives or frequently replace different types of blades, resulting in the existing utility knife having a narrow range of uses and few application scenarios. While increasing the purchase cost for users, the utility knife has a low efficiency when used in scenarios where the blade type needs to be frequently replaced. Utility Model Content

[0004] In order to solve the technical problems existing in the prior art, the present application provides a double-blade utility knife which has a simple structure, is easy to operate, integrates two blades and can select one blade to be pushed out for use.

[0005] A double-blade utility knife, comprising a shell provided with a blade outlet, a blade slidably arranged in the shell, a blade arranged on the blade, and a push button slidably arranged in the shell and driving the blade to slide, a knife holder slidably arranged in the shell width direction, push blocks slidably arranged in the shell on both sides of the knife holder, and the push blocks slidably arranged in the shell; two blades are slidably embedded in the knife holder in parallel with each other in the length direction of the shell, and a limiting groove with an upper end opening is provided on each of the blades, and when the push block is pushed, the lower part of the push button slidably arranged in each limiting groove;

[0006] When the push button is inserted into a certain limiting groove, pushing the push button can drive the corresponding blade and the blade to slide along the length direction of the shell, so that the blade extends out of the shell from the blade outlet.

[0007] Preferably, the tool holder includes a base plate, three vertical plates fixedly connected to the base plate and arranged in parallel, and a baffle fixedly connected to the base plate at one end of the vertical plate, and the two knife blades can be slidably embedded in the tool holder sliding groove between the two vertical plates.

[0008] Preferably, a guide protrusion is fixedly connected to one end surface of the blade, and the guide protrusion can abut against the upper end surface of the vertical plate.

[0009] Preferably, a guide groove is provided on the inner end surface of the shell along its length direction, and the guide protrusion can be slidably arranged in the guide groove.

[0010] Preferably, the push button includes a push plate arranged on the outside of the shell, a slide plate fixedly connected to the lower end surface of the push plate and slidably disposed in the shell and the limiting groove, slide plate protrusions are fixedly connected on both sides of the slide plate, and a shell slide groove is opened on the inner end surface of the shell opposite to the slide plate protrusion along the length direction of the shell, and the slide plate protrusion can be slidably disposed in the shell slide groove.

[0011] Preferably, the blade blade includes a blade body with a limiting groove and an elastic clamping part, the clamping part includes a clamping plate fixedly connected to the blade body, and a limiting plate fixedly connected to the upper end surface of the clamping plate, and the limiting plate is clamped in the blade clamping slot of the blade.

[0012] Preferably, the clamping member also includes a tool-changing plate fixedly connected to the upper end surface of the clamping plate, and the tool-changing plate is arranged above the blade; a tool-changing button is slidably embedded in the shell along its width direction, and when the tool-changing plate of the blade moves to the blade-changing position, pressing the tool-changing button can make the press button abut and push the tool-changing plate to make the limit plate disengage from the blade slot.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The utility model provides a knife holder that can slide along the width direction of the shell in the shell, provides two knife blades with different blades on the knife holder, and provides a limit groove on the knife blade, so that the push button can be locked in the limit groove of a knife blade, and the knife blade can be driven to move when the push button is pushed, so that the blade installed on the knife blade can be extended out of the shell from the blade outlet for use. Compared with the prior art, two different blades can be provided in the utility knife, and one of the blades can be extended out of the shell for use, thereby expanding the use scenarios of the utility knife and reducing the daily use cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of three states of an embodiment of the utility model.

[0016] Figure 2It is a schematic cross-sectional structure diagram of an embodiment of the utility model.

[0017] Figure 3 It is a structural schematic diagram of a housing 1 according to an embodiment of the utility model.

[0018] Figure 4 It is a schematic structural diagram of the housing 2 of an embodiment of the utility model.

[0019] Figure 5 The utility model is a schematic diagram of the connection structure of the knife holder, the knife core and the push button in the embodiment of the utility model.

[0020] Figure 6 It is a structural schematic diagram of a tool holder according to an embodiment of the utility model.

[0021] Figure 7 It is a structural schematic diagram of a push button according to an embodiment of the utility model.

[0022] Figure 8 It is a schematic diagram of the connection structure between the blade core and the hook blade of an embodiment of the utility model.

[0023] Fig. 9 The figure is a schematic diagram of the connection structure between the blade and the utility knife blade according to an embodiment of the utility model.

[0024] Fig.10 This is a schematic diagram of the structure of a tool changing button according to an embodiment of the utility model.

[0025] In the figure: 1, housing, 11, housing 1, 111, housing avoidance groove, 12, housing 2, 121, connecting column, 13, blade outlet, 14, sliding cavity, 15, housing through hole, 16, guide groove, 17, housing slide groove, 1-1, unused state, 1-2, hook knife used state, 1-3, utility knife used state,

[0026] 2. Blade gallbladder, 21. Blade gallbladder body, 211. Limiting groove, 212. Guide protrusion, 213. Blade gallbladder protrusion, 22. Blade gallbladder slot, 23. Snap-on plate, 24. Limiting plate, 25. Blade changing plate,

[0027] 3. Blade, 31. Utility blade, 32. Hook blade, 33. Blade slot,

[0028] 4. Push button, 41. Push plate, 42. Slide plate, 421. Slide plate protrusion,

[0029] 5. Tool holder, 51. Bottom plate, 52. Vertical plate, 53. Baffle plate, 54. Tool holder slide, 55. Push block, 56. Vertical plate avoidance groove,

[0030] 6. Tool change button, 61. Connecting plate. DETAILED DESCRIPTION

[0031] 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 them. 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.

[0032] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention. Example

[0033] See attached Figure 1 , 2 As shown, a double-blade utility knife includes a shell 1 provided with a blade outlet 13, a blade 2 slidably arranged in the shell 1, a blade 3 arranged on the blade 2, a push button 4 slidably arranged in the shell 1 and driving the blade 2 to slide, and a knife holder 5 arranged in the shell 1 and slidable along the width direction of the shell 1.

[0034] Specifically, the shell 1 includes a shell 11 and a shell 2 12 which cover each other and can be fixed to each other by bolts. In order to realize the sliding of the tool holder 5 in the shell 1, a sliding cavity 14 is opened at one end of the shell 11 and the shell 2 12 away from the blade outlet 13, and the tool holder 5 provided with the blade 2 and the blade 3 can be slid in the sliding cavity 14 along the width direction of the shell 1.

[0035] See also Figure 5 , 6 As shown, the knife holder 5 includes a bottom plate 51 arranged along the length direction of the housing 1, three vertical plates 52 integrally formed and fixedly connected to the bottom plate 51 and arranged in parallel on the upper end surface thereof, and a baffle plate 53 integrally formed and fixedly connected to the bottom plate 51 at the end of the vertical plate 52 away from the blade outlet 13. Two blades 2 of the same structure can be slidably embedded in the knife holder slide groove 54 between the two vertical plates, respectively, and the sliding position of the blade 2 can be limited by setting the baffle plate 53. Push blocks 55 are integrally formed on the outer end surfaces of the two outer vertical plates 52 of the knife holder 5. The push blocks 55 can be slidably penetrated in the housing 1, that is, housing through holes 15 are opened at corresponding positions of the housing 1 11 and the housing 2 12, and the push blocks 55 can be slidably penetrated in the housing through holes 15. In order to realize the reciprocating push of the knife holder 5, at least one of the two push blocks 55 extends to the outside of the housing through hole 15.

[0036] See also Figure 8 , 9 As shown, the blade 2 includes a blade body 21 with a limiting groove 211 at one end away from the blade outlet 13 and an elastic clip. The limiting groove 211 is a U-shaped groove structure with an upper end open. When the two blades 2 abut against the inner end surface of the baffle 53, the limiting grooves 211 on the two blades 2 are flush with each other, so that when the tool holder 5 is pushed, the push button 4 can enter the limiting groove 211 of another blade 2 from the limiting groove 211 on one blade 2.

[0037] A blade groove 22 is provided on the end surface of each blade 2 near the blade outlet 13, and a blade 3 can be clamped in the blade groove 22. In this embodiment, the blade 3 can be provided in two types, one is a utility blade 31, and the other is a hook blade 32. The overall structure of the utility blade 31 and the hook blade 32 are both trapezoidal structures, and a blade groove 33 with an upper end opening is provided on the upper end surfaces of both. When the blade 3 is clamped in the blade groove 22, the blade groove 33 is exposed outside the blade groove 22.

[0038] The clamping member includes a clamping plate 23 that is detachably fixedly connected to the blade body 21, and a limiting plate 24 that is integrally formed and fixedly connected to the upper end surface of the clamping plate 23. The limiting plate 24 can be clamped in the blade clamping slot 33 of the blade 3, so that the blade 3 is fixedly clamped in the blade clamping slot 22 to prevent it from being separated from the blade 2 when in use. In order to facilitate the blade changing operation of the utility knife, the clamping member also includes a blade changing plate 25 that is integrally formed and fixedly connected to the upper end surface of the clamping plate 23, and the blade changing plate 25 is arranged above the blade 3. The limiting plate 24 and the blade changing plate 25 are both formed by bending the clamping plate 23 toward the blade 3. When the blade 3 needs to be taken out of the blade clamping slot 33, the blade changing plate 25 can be pressed, and the blade changing plate 25 drives the clamping plate 23 to move away from the blade 3, so that the limiting plate 24 is separated from the blade clamping slot 33, and the blade 3 can be pulled out of the blade clamping slot 33.

[0039] When the push button 4 pushes a blade 2 on the tool holder 5 along the length direction of the shell 1, in order to guide the blade 2, a guide protrusion 212 is integrally formed and fixedly connected to the end face of the blade body 21 on the side away from the blade 3, and the guide protrusion 212 can abut the upper end face of the vertical plate 52.

[0040] The end surface of the blade body 21 facing away from the blade 3 is provided with a blade protrusion 213, which abuts against the corresponding vertical plate 52 and applies a certain pressure to the vertical plate 52, thereby preventing the blade 2 from shaking in the blade holder slide groove 54 when the blade holder 5 drives the blade 2 to slide. Figure 6 As shown, vertical plate avoidance grooves 56 are provided on the three vertical plates 52 to avoid interference between the vertical plates 52 and the slide plate 42 when the slide plate 42 and the tool holder 5 slide relative to each other.

[0041] See also Figure 3 , 4 As shown, after the blade 2 and the blade 3 thereon slide out of the sliding cavity 14, since the blade 2 is separated from the tool holder sliding groove 54, at this time, in order to guide the blade 2, a guide groove 16 is opened along the length direction of the shell 1 on the opposite inner end faces of the shell 1 11 and the shell 2 12 between the blade outlet 13 and the sliding cavity 14, and the guide protrusion 212 can be slidably disposed in the guide groove 16.

[0042] See also Figure 4 , Fig.10 As shown, in order to facilitate pressing the tool-changing plate 25 to realize the tool-changing operation of the blade 3, a tool-changing button 6 is slidably embedded in the housing 12 along its width direction, and one end of the connecting plate 61 is fixedly connected to the tool-changing button 6 and the other end thereof is detachably fixedly sleeved on the connecting column 121 on the inner end surface of the housing 12. When the tool-changing plate 25 of the blade 2 moves to the blade-changing position, pressing the tool-changing button 6 can make the pressing button 6 abut against and push the tool-changing plate 25 to disengage the limiting plate 24 from the blade slot 33. In this embodiment, the blade-changing position is the position when the blade 3 extends out of the blade outlet 13, so that it is convenient for the operator to pull the blade 3 out of the housing 1 from the blade outlet 13.

[0043] Furthermore, in order to avoid the tool changing plate 25 during the blade changing operation, a shell avoidance groove 111 is opened on the inner end face of the shell 11 at the blade changing position. When the tool changing button 6 pushes the tool changing plate 25, the tool changing plate 25 can move into the shell avoidance groove 111.

[0044] See also Figure 5 , 7 As shown, the push button 4 includes a push plate 41 arranged on the outside of the shell, and a slide plate 42 integrally formed and fixedly connected to the lower end surface of the push plate 41 and slidably arranged in the shell 1 and the limiting groove 211. The shape and size of the slide plate 42 match the limiting groove 211.

[0045] In order to guide the push button 4 when it is pushed along the length direction of the housing 1, a slide protrusion 421 is integrally formed and fixedly connected on both sides of the slide plate 42. Figure 3 , 4 As shown, a housing slide groove 17 is provided along the length direction of the housing 1 on the inner end surfaces of the housing 1 11 and the housing 2 12 opposite to the slide protrusion 421 , and the slide protrusion 421 can be slidably disposed in the housing slide groove 17 .

[0046] The working process of the embodiment of the utility model is as follows:

[0047] See also Figure 1 As shown, the leftmost side is the unused state 1-1, the middle side is the hook knife used state 1-2, and the rightmost side is the utility knife used state 1-3.

[0048] When the utility knife is in the unused state 1-1, the knife holder 5 and the two blades 2 are both in the sliding cavity 14. At this time, the slide plate 42 of the push button 4 is inserted into the blade groove 22 of a blade 2. Due to the limiting effect of the slide plate 42 on the blade 2, the blade 2 will not move along the length direction of the housing 1 when the push button 4 is not pushed. In addition, due to the limiting effect of the cavity wall of the sliding cavity 14 on the other blade 2, the blade 2 will not move along the length direction of the housing 1.

[0049] When the utility knife is in the hook knife use state 1-2, the corresponding push block 55 is pushed to make the knife holder 5 slide in the sliding cavity 14, so that the slide plate 42 is inserted into the limiting groove 211 of the knife core 2 on which the hook blade 32 is installed, and then the push plate 41 is pushed toward the blade outlet 13 to drive the knife core 2 and the hook blade 32 thereon to move until the hook blade 32 extends out from the blade outlet 13; after use, the push plate 41 is pushed away from the blade outlet 13 to restore the utility knife to the unused state 1-1;

[0050] When the utility knife is in the utility knife use state 1-3, first restore the utility knife to the unused state 1-1, then push the corresponding push block 55 to make the knife holder 5 slide in the sliding cavity 14, so that the slide plate 42 passes through the limiting groove 211 of the knife liner 2 on which the utility knife 31 is installed, and then push the push plate 41 toward the blade outlet 13 to drive the knife liner 2 and the utility knife 31 thereon to move until the utility knife 31 extends out from the blade outlet 13; after use, push the push plate 41 toward the direction away from the blade outlet 13 to restore the utility knife to the unused state 1-1;

[0051] When the blade 3 needs to be replaced, the above operation can be followed to put the utility knife in the hook knife use state 1-2 and the utility knife use state 1-3. At this time, the utility knife blade 31 or the hook blade 32 is in the blade changing position. Press the blade changing button 6 and pull out the blade 3 to be replaced from the blade outlet 13. Then, insert the new blade 3 into the blade 22 slot 22 of the blade 2 from the blade outlet 13 and release the blade changing button 6.

[0052] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A double-blade utility knife, comprising a housing provided with a blade outlet, a blade slidably arranged in the housing, a blade arranged on the blade slid, and a push button slidably arranged in the housing and driving the blade slidably, characterized in that: A knife holder which can slide along the width direction of the shell is arranged in the shell, and push blocks are arranged on both sides of the knife holder, and the push blocks can slide through the shell; Two knife cores are slidably embedded in the knife holder in parallel with each other along the length direction of the shell, and each knife core is provided with a limiting groove with an upper end opening. When the push block is pushed, the lower part of the push button can be slidably inserted into each limiting groove; When the push button is inserted into a certain limiting groove, pushing the push button can drive the corresponding blade and the blade to slide along the length direction of the shell, so that the blade extends out of the shell from the blade outlet.

2. A double-blade utility knife according to claim 1, characterized in that: The tool holder comprises a bottom plate, three vertical plates fixedly connected to the bottom plate and arranged in parallel, and a baffle fixedly connected to the bottom plate at one end of the vertical plate. The two knife blades can be slidably embedded in the tool holder sliding groove between the two vertical plates.

3. A double-blade utility knife according to claim 2, characterized in that: A guide protrusion is fixedly connected to one end surface of the blade, and the guide protrusion can abut against the upper end surface of the vertical plate.

4. A double-blade utility knife according to claim 3, characterized in that: A guide groove is provided on the inner end surface of the shell along the length direction thereof, and the guide protrusion can be slidably arranged in the guide groove.

5. A double-blade utility knife according to claim 1, characterized in that: The push button includes a push plate arranged on the outside of the shell, a slide plate fixedly connected to the lower end surface of the push plate and slidably arranged in the shell and the limiting groove, slide plate protrusions are fixedly connected on both sides of the slide plate, and a shell slide groove is opened on the inner end surface of the shell opposite to the slide plate protrusion along the length direction of the shell, and the slide plate protrusion can be slidably arranged in the shell slide groove.

6. A double-blade utility knife according to claim 1, characterized in that: The blade body includes a blade body with a limiting groove and an elastic clamping part, the clamping part includes a clamping plate fixedly connected to the blade body and a limiting plate fixedly connected to the upper end surface of the clamping plate, and the limiting plate is clamped in the blade clamping groove of the blade.

7. A double-blade utility knife according to claim 6, characterized in that: The clamping part also includes a tool-changing plate fixedly connected to the upper end surface of the clamping plate, and the tool-changing plate is arranged above the blade; a tool-changing button is slidably embedded in the shell along its width direction, and when the tool-changing plate of the blade moves to the blade-changing position, pressing the tool-changing button can make the press button abut and push the tool-changing plate to make the limit plate disengage from the blade slot.

Images