CN220784203U

CN220784203U - Combined loose-leaf puncher

Info

Publication number: CN220784203U
Application number: CN202322550623.3U
Authority: CN
Inventors: 陈虎
Original assignee: Mingyou Jiaxing Technology Co ltd
Current assignee: Mingyou Jiaxing Technology Co ltd
Priority date: 2023-09-20
Filing date: 2023-09-20
Publication date: 2024-04-16
Anticipated expiration: 2033-09-20

Abstract

The utility model relates to the technical field of office supplies, in particular to a combined loose-leaf puncher, which comprises a base and a knife set arranged on the front side of a top plate of the base and used for punching, wherein a knife avoiding groove is formed in the front side of the top plate and corresponds to the knife bar of the knife set in position, and the front side of the top plate and a knife holder bottom plate of the knife set are detachably connected with a positioning piece one by one through a plurality of positioning holes so as to lock the knife set and the front side of the top plate; the two cutter seat side plates of the cutter set extend backwards and are connected with the left side and the right side of the rear side of the top plate through lock catches, so that the cutter set is locked with the rear side of the top plate. The cutter groups and the base of the loose-leaf puncher can be disassembled, different cutter groups can share the base, and the use cost is reduced.

Description

Combined loose-leaf puncher

Technical Field

The utility model relates to the technical field of office supplies, in particular to a combined loose-leaf puncher.

Background

The loose-leaf puncher is mainly used for punching edges of loose-leaf notebooks, file inner pages and financial bills and generally comprises a cutter set and a base for punching. The defects of the existing loose-leaf puncher are that: the base is fixed in the knife tackle bottom, generally is not detachable, need change together with the base when changing the knife tackle of different hole pitches, because the hole pitch of punching is by the cutter arbor interval determination of knife tackle, the base mainly plays the effect of lifting the knife tackle and pushing up the desktop when avoiding the cutter arbor to move down, utilizes the height of lifting to hold the wastepaper that the punching produced simultaneously, if the base of different knife tackles can be general, then can effectively reduce use cost.

Disclosure of Invention

The utility model aims to overcome the defects in the background art, and provides a combined loose-leaf hole puncher, wherein knife groups and a base of the loose-leaf hole puncher can be detached, different knife groups can share the base, and the use cost is reduced.

The technical scheme adopted by the utility model is as follows: the combined loose-leaf puncher comprises a base and a cutter group which is arranged on the front side of a top plate and used for punching, wherein a cutter avoiding groove is formed in the front side of the top plate and corresponds to the cutter bar of the cutter group in position, and the front side of the top plate is detachably connected with a cutter holder bottom plate of the cutter group one to one through a plurality of positioning holes and positioning pieces, so that the cutter group is locked with the front side of the top plate; the two cutter seat side plates of the cutter set extend backwards and are connected with the left side and the right side of the rear side of the top plate through lock catches, so that the cutter set is locked with the rear side of the top plate.

Preferably, the front side of the top plate is recessed downwards, and the tool apron bottom plate is installed in the recessed area.

Preferably, the positioning piece is a bolt, and the bolt passes through the top plate of the base upwards from the inside of the base and is in threaded connection with the positioning hole on the bottom plate of the tool apron.

Preferably, the lock catch comprises an elastic lock hook which is positioned on the top surface of the top plate and extends upwards, a hook is arranged on the left side or the right side of the upper end of the elastic lock hook, and the hooks of the two lock catches are arranged in opposite directions; the extension section of two blade holder curb plates rear sides is equipped with the bayonet socket, thereby the hook of elasticity latch hook hooks in the lower edge of bayonet socket locking the knife tackle curb plate.

Preferably, the lock catch further comprises two fixing blocks fixed on the top surface of the top plate, a clamping groove matched with the extension section is formed between the two fixing blocks at a certain distance, a notch for accommodating the elastic lock hook is formed in one fixing block, and a through hole opposite to the hook of the elastic lock hook is formed in the other fixing block.

Preferably, the knife set comprises a knife holder, a knife bar assembly and a pressing arm; the knife rest comprises a knife rest bottom plate and two knife rest side plates which are integrally formed at two ends of the knife rest bottom plate and extend upwards, a loose-leaf inlet for extending loose-leaf is formed in the front side of the connecting position of the knife rest side plates and the knife rest bottom plate, a knife bar component is arranged between the two knife rest side plates, and a pressing arm is arranged on the two knife rest side plates and connected with the knife bar component.

Preferably, the cutter bar assembly comprises a group of cutter bars, compression bars and torsion springs, the cutter bars are fixed between two cutter holder side plates, the bottoms of the cutter bars are higher than or flush with the upper edge of the loose-leaf inlet, two rows of cutter holes which are in one-to-one correspondence are formed in the cutter bars, one cutter bar capable of sliding vertically is arranged in each group of cutter holes, the compression bars transversely penetrate through the middle parts of the cutter bars, two ends of the compression bars extend into vertical guide holes in the two cutter holder side plates, the front ends of the compression arms are rotatably connected onto the cutter holders through hinge shafts, two sides of the compression arms are connected with two ends of the compression bars, the torsion springs are sleeved on the hinge shafts and simultaneously abut against the compression arms and the cutter bars, and force is applied to the compression arms after the compression arms are pressed downwards so as to reset the compression arms.

Preferably, the bottom of the base is provided with a containing cavity for containing paper scraps, the containing cavity is communicated with the knife avoiding groove, and the bottom is provided with a detachable bottom plate.

Preferably, detachable positioning blocks are respectively arranged on the left side and the right side of the front side of the top plate, and each positioning block is provided with at least one score line for aligning the top edge or the bottom edge of the loose-leaf and a detachable positioning column for penetrating through the loose-leaf hole.

Preferably, the base is detachably connected with the positioning block, and the positioning column is detachably connected with the positioning block through a fastening structure.

The utility model has the beneficial effects that: in the utility model, the cutter groups are detachably connected with the base, and different cutter groups can be replaced only by adapting the connecting structure of the cutter groups and the base, so that different cutter groups can share the base, and the use cost is reduced. Besides the bolt and the connection, the knife set is locked at the rear side through the lock catch, so that the knife set is firmly connected, and the stability in use is not affected. The positioning blocks are detachable, and the positions of the positioning columns are changed after different positioning blocks are replaced, so that the positioning blocks can adapt to different hole pitches. Utilize the high formation of base bottom to hold the chamber, hold chamber bottom and use detachable bottom plate to seal, can realize the paper dust and collect in unison.

Drawings

Fig. 1 is a schematic side view of an embodiment of the present utility model.

Fig. 2 is a schematic perspective view of an embodiment of the present utility model.

Fig. 3 is a schematic perspective view of a knife tackle according to an embodiment of the present utility model.

Fig. 4 is a schematic side view of a knife block according to an embodiment of the utility model.

Fig. 5 is a schematic view of a base structure according to an embodiment of the present utility model, where positioning blocks are installed on two sides of the base.

Fig. 6 is a schematic view of a positioning block mounting manner according to an embodiment of the present utility model.

The drawings are as follows: the knife block 100, the knife holder 101, the pressing arm 102, the pressing rod 103, the hinge shaft 104, the loose-leaf inlet 105, the bayonet 106, the knife rest 107, the torsion spring 108, the positioning hole 109, the knife holder bottom plate 110, the knife holder side plate 111, the extension section 111.1, the base 201, the positioning block 202, the positioning column 203, the dismounting port 204, the fixing block 205, the elastic latch hook 206, the hook 206.1, the score line 207, the through hole 208, the clamping groove 209, the knife avoiding groove 210, the positioning piece 211, the socket 212, the stop block 212.1, the positioning groove 212.2, the plug 213, the protrusion 213.1, the positioning seat 214 and the bottom plate 215.

Detailed Description

The objects, technical solutions and advantages of the present utility model will be further described with reference to the accompanying drawings and examples, but the present utility model is not limited to the following examples, for the purpose of making the objects, technical solutions and advantages of the present utility model more clearly understood by those skilled in the art.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific direction, be configured and operated in the specific direction, and thus should not be construed as limiting the present utility model.

As shown in fig. 1 and 2, the combined loose-leaf hole puncher provided in this embodiment includes a base 201 and a knife set 100 detachably mounted on the front side of the top plate of the base 201 for punching. As shown in fig. 5, the front side of the top plate is provided with a knife avoiding groove 210, the knife avoiding groove 210 corresponds to the knife bar of the knife set 100, when the knife bar is pressed down in the punching process, the loose leaf is punched, and the lower end of the knife bar can enter the knife avoiding groove 210. The front side of the top plate is recessed downwards, the tool apron bottom plate 110 is arranged in the recessed area, and the structure can enable the top surface of the tool apron bottom plate 110 to be flush with the top surface of the top plate of the base 201, so that loose leaves are prevented from being plugged when steps are generated to affect punching.

The base 201 and the knife set 100 can be detached by the following structure: as shown in fig. 5, the front side of the top plate is provided with a plurality of positioning members 211 overhanging upwards, the tool apron bottom plate 110 of the tool group 100 is provided with a plurality of positioning holes 109, and the positioning members 211 are detachably connected with the positioning holes 109 one by one, so that the tool group 100 is locked with the front side of the top plate; the rear side of the top plate is provided with a latch on each of the left and right sides, and both the holder side plates 111 of the knife block 100 are extended rearward and locked in the two latches one by one, thereby locking the knife block 100 with the rear side of the top plate. Alternatively, the positioning member 211 may be a bolt, and the bolt passes through the top plate of the base 201 from the inside of the base 201 and is screwed with the positioning hole 109 on the bottom plate 110 of the tool holder, so that the bolt can avoid the blocking of the tool set 100, and is convenient to detach.

As shown in fig. 1 and 2, the lock catch comprises an elastic lock hook 206 which is positioned on the top surface of the top plate and extends upwards, a hook 206.1 is formed on the left side or the right side of the upper end of the elastic lock hook 206, the hooks 206.1 of the two lock catches are arranged in opposite directions, and the hooks 206.1 face towards the direction of the tool holder side plate 111 to form an inclined plane, so that the tool holder side plate 111 is convenient to press downwards. The extension 111.1 of the rear side of the two tool holder side plates 111 is provided with a bayonet 106, and the hook 206.1 of the elastic latch hook 206 is laterally deformed after the tool holder side plates 111 are pressed down, and is hooked on the lower edge of the bayonet 106 after rebounding, so that the side plates of the tool set 100 are locked. The lock catch further comprises two fixing blocks 205 which are oppositely arranged left and right and are fixed on the top surface of the top plate, a clamping groove 209 which is matched with the side plate 111 of the tool apron is formed between the two fixing blocks 205, one fixing block 205 is provided with a notch for accommodating the elastic lock hook 206, and the other fixing block 205 is provided with a through hole 208 which is oppositely arranged with the hook 206.1 of the elastic lock hook 206.

The knife set 100 may be a conventional knife set 100, and only needs to have a knife bar corresponding to the position of the knife avoiding groove 210, and a positioning hole 109 corresponding to the position of the positioning piece 211. As shown in fig. 3 and 4, in this embodiment, as an alternative, the knife set 100 may have the following structure: comprises a tool holder 101, a tool bar assembly and a pressing arm 102. The tool holder 101 is composed of a tool holder bottom plate 110 and two tool holder side plates 111 integrally formed at left and right ends thereof and overhanging upward. The front side of the connection of the side plate 111 and the bottom plate 110 is provided with a loose-leaf inlet 105 for inserting loose-leaf, and the depth and height of the loose-leaf inlet 105 should be as large as possible within the punching capacity of the cutter bar, so that the punching of a plurality of loose-leaf sheets can be completed at one time. The cutter bar assembly is mounted between the two cutter holder side plates 111, and the press arm 102 is mounted on the two cutter holder side plates 111 and connected with the cutter bar assembly.

Specifically, the cutter bar assembly includes a set of cutter bars, a cutter holder 107, a pressing bar 103, and a torsion spring 108. In this embodiment, the blade holder 107 is inserted into the mortises of the two blade holder side plates 111 through tenons at two ends, so as to be fixed between the two blade holder side plates 111, and the bottom of the blade holder 107 is higher than or flush with the upper edge of the loose-leaf inlet 105 so as not to interfere with the loose-leaf. The tool rest 107 is provided with an upper flat plate and a lower flat plate which are connected together, a row of tool holes matched with the tool bars are respectively formed in the two flat plates, the two rows of tool holes are in one-to-one correspondence, one tool bar capable of sliding vertically is arranged in each group of tool holes corresponding to the upper side and the lower side, the pressing rod 103 transversely penetrates through the middle part of each tool bar, two ends of the pressing rod 103 extend into vertical guide holes on the two tool rest side plates 111, the front end of the pressing arm 102 is rotatably connected to the tool rest 101 through the hinge shaft 104, two sides of the pressing arm 102 are connected with two ends of the pressing rod 103, the torsion spring 108 is sleeved on the hinge shaft 104, two ends of the torsion spring 108 abut against the tool rest 107, the middle part of the torsion spring 108 abuts against the bottom surface of the pressing arm 102, and after the pressing arm 102 is pressed down, the torsion spring 108 applies force to the pressing arm 102 to reset.

The edges around the base 201 extend downwards, so that a containing cavity for containing paper scraps is formed at the bottom of the base 201, the containing cavity is communicated with the cutter avoiding groove 210, the paper scraps during punching can fall into the containing cavity, tenons are arranged around the containing cavity, tenons are arranged on the bottom plate 215, and the bottom plate 215 is detachably mounted at the bottom of the base 201 through the tenons and the inner shells of the tenons. The periphery of the base 201 is provided with a disassembly opening 204, and the bottom plate 215 can be pried off through the disassembly opening 204 to pour out paper scraps.

As shown in fig. 5 and 6, positioning blocks 202 are respectively mounted on the left and right sides of the front side of the top plate, and the positioning blocks 202 are aligned with the hinge inlets 105. For a first time with a reference, each positioning block 202 is provided with a plurality of score lines 207 for aligning the top or bottom edges of the leaflet, e.g. A4 size leaflet may be aligned with A4 score lines 207, A5 aligned with A5 score lines 207. Meanwhile, in order to make a reference during subsequent punching, a detachable positioning column 203 for threading loose-leaf holes is further arranged on each positioning block 202, after each punching, a hole is sleeved on the positioning column 203, and the hole punched at the next time is used as the reference by taking the hole punched at the previous time, so that deviation is avoided.

The base 201 and the positioning block 202, and the positioning column 203 and the positioning block 202 are detachably connected through a fastening structure. Specifically, the bayonet 106 between the base 201 and the positioning block 202 has the structure that: the positioning block 202 is provided with a plug 213, protrusions 213.1 are formed on the front and rear sides of the plug 213, sockets 212 are formed on the left and right sides of the base 201, positioning grooves 212.2 corresponding to the protrusions 213.1 are formed on the front and rear sides of the sockets 212, and after the plug 213 is inserted into the sockets 212, the protrusions 213.1 are clamped in the positioning grooves 212.2. In order to prevent the plug 213 from being separated from the bottom of the base 201, the front and rear sides of the bottom of the positioning slot 212.2 are provided with stoppers 212.1. The bayonet 106 between the positioning column 203 and the positioning block 202 has a structure that an elastic chuck is arranged at the bottom of the positioning column 203, an insertion hole is arranged on the positioning block 202, and after the positioning column 203 is inserted into the insertion hole, the elastic chuck is clamped on a positioning seat 214 at the bottom of the positioning block 202.

Obviously, according to the specifications of the perforated loose-leaf, other positioning blocks 202 can be replaced, and the loose-leaf with different specifications can be adapted through different positions of the scribing lines 207 and the positioning columns 203 on the positioning blocks 202. Meanwhile, the positioning columns on different positioning blocks can be different, so that the positioning columns can adapt to different hole pitches by replacing the positioning blocks.

In this embodiment, when the loose-leaf is perforated, a side of the loose-leaf to be perforated is inserted into the loose-leaf inlet 105, the top edge or the bottom edge of the side is aligned with the corresponding score line 207 on any positioning block 202, then the cutter bars are pressed down by the pressing arm 102 to enable the cutter bars to pass through the loose-leaf together, the loose-leaf produced by perforation falls into the accommodating cavity from the cutter avoiding groove 210 to be uniformly collected, then the pressing arm 102 is released, the loose-leaf is reset under the action of the pressing spring, one hole is sleeved on the positioning column 203, then perforation is performed again, and so on until all holes are perforated. When the pitch of the holes needs to be changed, the connection between the positioning piece 211 and the positioning hole 109 can be released, and then a different knife set 100 can be assembled, and the positioning block 202 can be detached for replacement if necessary.

The foregoing description is only of the preferred embodiments of the present utility model, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. The utility model provides a combination formula loose-leaf hole puncher, includes base (201) and installs in its roof front side be used for cutter package (100) that punch, the front side of roof is equipped with keeps away sword groove (210), keeps away sword groove (210) and the cutter arbor position correspondence of cutter package (100), its characterized in that: the front side of the top plate is detachably connected with the tool apron bottom plate (110) of the tool set (100) one by one through a plurality of positioning holes (109) and positioning pieces (211), so that the tool set (100) is locked with the front side of the top plate; the two tool holder side plates (111) of the tool group (100) extend backwards and are connected with the left side and the right side of the rear side of the top plate through lock catches, so that the tool group (100) is locked with the rear side of the top plate.

2. The combination leaflet hole punch as claimed in claim 1, wherein: the front side of the top plate is recessed downwards, and a tool apron bottom plate (110) is installed in the recessed area.

3. A combination leaflet hole punch as claimed in claim 1 or 2, wherein: the locating piece (211) is a bolt, and the bolt passes through the top plate of the base (201) upwards from the inside of the base (201) and is in threaded connection with the locating hole (109) on the tool apron bottom plate (110).

4. A combination leaflet hole punch as claimed in claim 1 or 2, wherein: the lock catch comprises an elastic lock hook (206) which is positioned on the top surface of the top plate and extends upwards, a hook (206.1) is arranged on the left side or the right side of the upper end of the elastic lock hook (206), and the hooks (206.1) of the two lock catches are arranged in opposite directions; the extending sections (111.1) at the rear sides of the two cutter seat side plates (111) are provided with bayonets (106), and hooks (206.1) of the elastic latch hooks (206) are hooked on the lower edges of the bayonets (106) so as to lock the cutter group (100) side plates.

5. The combination leaflet hole punch as claimed in claim 4, wherein: the lock catch further comprises two fixing blocks (205) fixed on the top surface of the top plate, a clamping groove (209) which is matched with the extension section (111.1) is formed between the two fixing blocks (205), a notch for accommodating the elastic lock hook (206) is formed in one fixing block (205), and a through hole (208) which is arranged opposite to the hook (206.1) of the elastic lock hook (206) is formed in the other fixing block (205).

6. A combination leaflet hole punch as claimed in claim 1 or 2, wherein: the cutter group (100) comprises a cutter holder (101), a cutter bar assembly and a pressing arm (102); the knife rest (101) comprises a knife rest bottom plate (110) and two knife rest side plates (111) which are integrally formed at two ends of the knife rest bottom plate and extend upwards, a loose-leaf inlet (105) used for enabling loose leaves to extend into is formed in the front side of the joint of the knife rest side plates (111) and the knife rest bottom plate (110), a knife bar assembly is arranged between the two knife rest side plates (111), and a pressing arm (102) is arranged on the two knife rest side plates (111) and connected with the knife bar assembly.

7. The combination loose-leaf punch of claim 6, wherein: the cutter bar assembly comprises a group of cutter bars, cutter bars (107), compression bars (103) and torsion springs (108), the cutter bars (107) are fixed between two cutter base side plates (111), the bottoms of the cutter bars (107) are higher than or flush with the upper edges of the loose-leaf inlets (105), two rows of cutter holes corresponding to each other are formed in the cutter bars (107), one cutter bar capable of vertically sliding is arranged in each group of cutter holes corresponding to each cutter bar, the compression bars (103) transversely penetrate through the middle of each cutter bar, the two ends of each compression bar (103) extend into vertical guide holes in the two cutter base side plates (111), the front ends of the compression arms (102) are rotatably connected to the cutter bases (101) through hinge shafts (104), the two sides of each compression arm (102) are connected with the two ends of each compression bar (103), and the torsion springs (108) are sleeved on the hinge shafts (104) and simultaneously abut against the compression arms (102) and the cutter bars (107), and force the compression arms (102) to reset the compression arms (102) after the compression arms (102) are pressed downwards.

8. A combination leaflet hole punch as claimed in claim 1 or 2, wherein: the bottom of the base (201) is provided with a containing cavity for containing paper scraps, the containing cavity is communicated with the knife avoiding groove (210), and the bottom is provided with a detachable bottom plate (215).

9. A combination leaflet hole punch as claimed in claim 1 or 2, wherein: the left side and the right side of the front side of the top plate are respectively provided with a detachable positioning block (202), and each positioning block (202) is provided with at least one scribing line (207) for aligning the top edge or the bottom edge of the loose-leaf, and a detachable positioning column (203) for penetrating the loose-leaf hole.

10. The combination leaflet hole punch of claim 9 wherein: the base (201) and the positioning block (202) and the positioning column (203) and the positioning block (202) are detachably connected through a buckle structure.