Tool bit angle switching structure for tool

Abstract

The utility model discloses a tool bit angle switching structure for a tool, and relates to the technical field of tools, the tool bit angle switching structure comprises a tool bit fixedly provided with a blade; the driving part is arranged on a shell of the cutter in a sliding manner, and the cutter head is rotatably connected to the driving part; the rack is fixed to the inner wall of the shell, and the rack is located on one side of the tool bit; and the gear part is fixedly connected to the tool bit, the gear part and the rack are oppositely arranged, the gear part is provided with a plurality of driving teeth meshed with the rack, and the driving teeth are arranged in an arc shape. The utility model overcomes the defects of high processing requirement and high processing difficulty of the structure for rotating the blade to switch the angle of the cutter in the skip in the prior art, and has the advantages of simple structure and convenience in processing.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of cutter, especially a cutter head angle switching structure for cutter. BACKGROUND

[0002] In the traditional cutter, there are cutters with cutting edges arranged on the side for cutting, and cutters with cutting edges arranged on the front for scraping. Usually, these cutters are not universal, and the user needs to prepare two cutters when cutting and scraping are needed.

[0003] The Chinese invention patent with the publication number CN119283086A discloses a deformable cutter. The blade is arranged on the cutter seat. The first guide is arranged on the front of the cutter seat, and the second guide is arranged on the back. The movement line of the cutter seat is defined by the cooperation of the first guide with the first guide rail and the second guide with the second guide rail on the surface of the cutter shell, so as to transition the blade to a plurality of positioning positions from 0° to 90°. Specifically, the first guide rail forms a J-shaped track. The cutter seat carrying the blade cooperates with the second guide rail through the cylindrical second guide. In this process, the first guide also slides linearly in the first guide rail. The angle of rotation of the blade is the deflection angle of the line connecting the first guide and the second guide. When the cutter seat moves to the end of the J-shaped track, the turning of the blade can be realized.

[0004] In the above-mentioned cutter, the angle of the cutter head is limited and guided by the J-shaped guide rail to guide the moving direction of the second guide on the cutter seat. The smoothness of the J-shaped second track is required to be high. The structure of the second track is relatively complex. The accuracy of the arc parameters of the J-shaped end of the second track is required to be high. The overall processing difficulty of the cutter is large. UTILITY MODEL CONTENTS

[0005] To solve the defects of high processing requirement and large processing difficulty of the structure for switching the angle of the blade rotation in the cutter in the existing technology, the utility model provides a cutter head angle switching structure for cutter, which has the advantages of simple structure and convenient processing.

[0006] The above technical purpose of the utility model is realized by the following technical scheme:

[0007] The utility model provides a cutter head angle switching structure for cutter, which comprises:

[0008] A cutter head, wherein a blade is fixedly arranged on the cutter head;

[0009] A driving member, which is slidably arranged in the shell of the cutter, and the cutter head is rotatably connected to the driving member;

[0010] A rack, which is fixed to the inner wall of the shell, and the rack is located on one side of the cutter head;

[0011] Gear part, the gear part is fixedly connected with the tool bit, the gear part is opposite to the rack, and the gear part has a plurality of driving teeth meshing with the rack, and the plurality of driving teeth are arranged in an arc shape.

[0012] Further, the rack is arranged in a straight line, and the rack is parallel to the sliding direction of the driving member.

[0013] Further, the plurality of driving teeth are uniformly spaced.

[0014] Further, among the plurality of driving teeth, the included angle between the first and last driving teeth is 90°.

[0015] Further, the number of the driving teeth is four, and the included angle between the adjacent two driving teeth is 30°.

[0016] Further, the rack has at least four teeth, and adjacent two teeth form a tooth groove meshing with the driving tooth.

[0017] Further, the gear part is 1 / 4 circular, and the driving teeth are uniformly arranged on the outer periphery of the 1 / 4 circle.

[0018] Further, the tool bit comprises a tool holder, the tool holder is provided with a mounting groove, the mounting groove penetrates one side of the tool holder, and the tool blade holder is fixed in the mounting groove and exposed outside the mounting groove.

[0019] Further, the tool holder is provided with a rotating shaft, the rotating shaft is perpendicular to the tool blade, and the driving member is provided with an axis hole matched with the rotating shaft.

[0020] Further, a plurality of locking grooves are formed in the tool holder, the number of the locking grooves is the same as that of the driving teeth, and the included angle between the adjacent two locking grooves is the same as that between the adjacent two driving teeth; the driving member is connected with a locking block, and the locking block can be matched with the locking groove to prevent the tool holder from rotating.

[0021] Therefore, the utility model has the following beneficial effects:

[0022] 1. The utility model discloses a tool bit angle switching structure for a tool, which is used for cutting or scraping work through the blade on the tool bit, and specifically, the tool bit is driven by a driving member to slide relative to the shell, so that the blade can be extended out of the shell or withdrawn into the shell, so as to use the blade for work, when the sliding driving member drives the blade to extend out of the shell, the tool bit moves to the end of the shell, and the blade extends out of the shell, at this time, the blade works at a first angle, the driving member is continuously pushed forward, so that the gear part on the tool bit corresponds to and meshes with the rack in the shell, in the process of continuous forward movement of the tool bit, the rack sequentially meshes with the plurality of driving teeth arranged in an arc shape on the gear part, so that the gear part drives the tool bit to rotate, so that the blade can work at other angles in sequence, thereby, the blade can cut at a cutting angle and can scrape at a scraping angle, so as to meet the use requirement of the user, compared with the prior art, the rack and the gear part of the tool bit angle switching structure are relatively convenient to set, only the meshing of the rack and the driving teeth on the gear part needs to be met, the structure is simple, the processing is convenient, the machining precision requirement is low, and the tool bit has a long service life and small wear during the switching of the tool bit angle.

[0023] 2. The utility model discloses a rack is arranged in parallel with the sliding direction of the driving member along a straight line, so as to better mesh with the driving teeth of the gear part to drive the tool bit to rotate when the driving member drives the tool bit to slide linearly.

[0024] 3. The plurality of driving teeth are uniformly and separately arranged, so that the angle of each rotation of the tool bit is the same, and the rotation of the tool bit to the required angle is conveniently adjusted and controlled.

[0025] 4. The included angle between the two driving teeth at the head and tail is 90 DEG, so that the cutting edge of the blade on the tool bit can extend in parallel with the moving direction of the driving member to perform cutting work, and the blade can extend perpendicularly to the moving direction of the driving member after being rotated by 90 DEG to perform scraping work, so that the blade is conveniently switched between the two blade angle conditions of cutting and scraping with a change of 90 DEG.

[0026] 5. The utility model discloses that the gear part has four driving teeth, and correspondingly, the rack is provided with four teeth meshing therewith, in this embodiment, the blade can be switched between five angles of 0 DEG, 15 DEG, 45 DEG, 75 DEG and 90 DEG, so as to meet various use requirements.

[0027] 6. The gear part is a 1 / 4 circle, and the four driving teeth are uniformly arranged on the outer periphery of the 1 / 4 circle, so that the consumption of materials and the occupied space of the gear part are reduced while the interval between the two driving teeth at the head and tail is 90 DEG, and the tool is more compact as a whole. ACCURACY

[0028] Figure 1 It is the three-dimensional structure schematic diagram of the tool cutting work of an embodiment of the utility model.

[0029] Figure 2 is a three-dimensional structure schematic diagram of a tool shoveling operation of an embodiment of the utility model.

[0030] Figure 3 is an exploded structure schematic diagram of a tool bit and driving piece of an embodiment of the utility model.

[0031] Figure 4 is a three-dimensional structure schematic diagram of a tool bit of an embodiment of the utility model.

[0032] Figure 5 is an exploded structure schematic diagram of a tool of an embodiment of the utility model.

[0033] Figure 6 is a three-dimensional structure schematic diagram of a rack and pinion part of an embodiment of the utility model.

[0034] Figure 7 is a three-dimensional structure schematic diagram of a pinion part of an embodiment of the utility model.

[0035] In the drawings:

[0036] 1000, tool; 100, shell; 200, tool bit angle switching structure; 210, tool bit; 211, tool holder; 212, blade; 213, mounting groove; 214, rotating shaft; 215, locking groove; 220, driving piece; 221, shaft hole; 222, locking block; 230, rack; 240, pinion part; 241, driving tooth. DETAILED DESCRIPTION

[0037] The utility model will be further described below in combination with the drawings.

[0038] The embodiment discloses a tool bit angle switching structure 200 for a tool bit, which is used for angle adjustment of a tool bit 1000. Figure 1 The tool 1000 can be a common tool 1000 such as a stationery knife or a paper cutter, which comprises a shell 100 and a tool bit angle switching structure 200. The tool bit angle switching structure 200 comprises a tool bit 210 and a driving piece 220, and is used for driving the tool bit 210 to rotate for angle adjustment. The front end of the shell 100 is open to allow the tool bit 210 to extend out for operation. The tool bit 210 and the driving piece 220 are arranged in the shell 100, and the driving piece 220 is slidably arranged along the length direction of the shell 100. The tool bit 210 is rotatably connected to the driving piece 220. Part of the driving piece 220 extends out of the shell 100 through a sliding groove arranged on the shell 100 for user operation, so that the user can push the driving piece 220 along the sliding groove to move, thereby driving the tool bit 210 to move out of or retract into the shell 100.

[0039] Referring toFigures 1 to 3 The tool head 210 comprises a tool holder 211 and a tool blade 212 fixedly arranged on the tool holder 211. The tool holder 211 is connected to the driving member 220, and the tool holder 211 is provided with a mounting groove 213 penetrating through one side of the tool holder 211. The tool blade 212 is clamped and fixed in the mounting groove 213 and exposed outside the mounting groove 213.

[0040] The tool blade 212 is in the shape of a trapezoid as a whole, and the cutting edge is arranged on the lower base of the tool blade 212. When the tool blade 212 is located in the shell 100, the cutting edge extends in parallel to the length direction of the shell 100 (i.e. the sliding direction of the driving member 220), so that the cutting edge can be used for cutting operation when the driving member 220 drives the tool head 210 to just extend out of the shell 100, as shown in FIG. 2B. When the driving member 220 continues to drive the tool head 210 to move forward, the tool head angle switching structure 200 drives the tool head 210 to rotate until the cutting edge is rotated to be perpendicular to the length direction of the shell 100, as shown in FIG. 2C, so that the cutting edge can be used for scraping operation. Figure 1 Figure 2

[0041] Referring to FIGS. 1A, 1B and 2A, the tool head 210 is arranged in the shell 100, and the tool blade 212 is located in the shell 100 and is not exposed outside the shell 100. Figure 3 Figure 4 The upper side of the tool holder 211 is fixedly connected with a rotating shaft 214, and the rotating shaft 214 is arranged perpendicularly to the tool blade 212. The driving member 220 is provided with a shaft hole 221 which is in rotational cooperation with the rotating shaft 214. The rotating shaft 214 on the tool holder 211 is rotatably arranged in the shaft hole 221, so as to realize the connection between the tool holder 211 and the driving member 220. Thus, when the tool holder 211 is located in the shell 100, the tool holder 211 is limited by the inner wall of the shell 100, so that the driving member 220 can drive the tool holder 211 to move through the rotating shaft 214. When the tool holder 211 extends out of the shell 100, the tool holder 211 loses the limitation of the inner wall of the shell 100, and the tool holder 211 can drive the tool blade 212 to rotate relative to the driving member 220 through the rotating shaft 214, so as to adjust the angle of the tool blade 212.

[0042] Referring to FIGS. 1A, 1B and 2A, the tool head angle switching structure 200 further comprises a rack 230 and a gear portion 240. The rack 230 is fixed to the inner wall of the shell 100, and the gear portion 240 is fixedly connected to the tool head 210. The gear portion 240 is arranged opposite to the rack 230, and the gear portion 240 has a plurality of driving teeth 241 which are engaged with the rack 230. The plurality of driving teeth 241 are arranged in an arc shape. Figure 5 Figure 6 When the driving member 220 is slid forward to drive the tool blade 212 to extend out of the shell 100, the tool head 210 moves to the end of the shell 100, and the tool blade 212 extends out of the shell 100, as shown in FIG. 2B. At this time, the tool blade 212 works at a first angle.

[0043]

[0044] ​​​​​Continuing to push the driving member 220 forward, the gear portion 240 on the tool head 210 corresponds to and meshes with the rack 230 in the housing 100, and during the continuous forward movement of the tool head 210, the rack 230 meshes with the plurality of driving teeth 241 arranged in an arc on the gear portion 240 in sequence, thereby driving the gear portion 240 to rotate the tool head 210, so that the blade 212 can work at other angles in sequence. Thus, the blade 212 can not only cut at a cutting angle, but also can shovel at a shoveling angle, meeting the use requirements of users.

[0045] Compared with the prior art, the tool head angle switching structure 200 of the embodiment has a rack 230 and a gear portion 240 which are arranged conveniently, and only need to meet the meshing of the rack 230 and the driving teeth 241 on the gear portion 240, so that the structure is simple, processing is convenient, the machining precision requirement is low, and the tool head 210 has less wear during angle switching, and the service life of the tool 1000 is longer.

[0046] Referring to Figure 5 and Figure 6 In the embodiment, the rack 230 is arranged in the front end of the housing 100 (i.e. the end of the housing 100 for the tool head 210 to extend out), so that the tool head 210 is not affected by the rack 230 when sliding in the housing 100, and only when the tool head 210 continues to slide out of the housing 100 can the rack 230 drive the gear portion 240 to rotate.

[0047] In the embodiment, the rack 230 is located on the left side or the right side of the tool head 210, and the rack 230 is arranged in a straight line and parallel to the sliding direction of the driving member 220. The rack 230 is arranged in a straight line parallel to the sliding direction of the driving member 220, so as to better mesh with the driving teeth 241 of the gear portion 240 to drive the tool head 210 to rotate when the driving member 220 drives the tool head 210 to slide linearly.

[0048] Among them, the plurality of driving teeth 241 on the gear portion 240 are uniformly and spacedly arranged, so that the angle of each rotation of the tool head 210 is the same, facilitating adjustment and control of the tool head 210 to rotate to the required angle.

[0049] Referring to Figures 5 to 7In particular, in this embodiment, the included angle between the first and last two driving teeth 241 (i.e. the two driving teeth 241 with the largest interval angle) among the plurality of driving teeth 241 is 90°, so that the cutting edge of the blade 212 on the tool head 210 can extend parallel to the moving direction of the driving member 220 to perform cutting operation, and the blade 212 can also extend perpendicular to the moving direction of the driving member 220 after rotating 90° to perform scraping operation, facilitating the blade 212 to switch between the two working conditions with the cutting and scraping blade angles changed by 90°. Meanwhile, it is not necessary to arrange driving teeth 241 in a range greater than 90°, reducing the cost and processing difficulty of the tool 1000.

[0050] In addition, in other embodiments, the included angle between the first and last two driving teeth 241 can also be other angles, so that the tool head 210 can rotate by an angle greater than or less than 90°.

[0051] In this embodiment, the gear part 240 is in the shape of 1 / 4 circle, and the plurality of driving teeth 241 are uniformly arranged on the outer periphery of the 1 / 4 circle, so as to satisfy the interval of 90° between the first and last two driving teeth 241 while reducing the material consumption and space occupation of the gear part 240, making the tool 1000 more compact as a whole. Of course, in other embodiments, the gear part 240 can also be a complete circle, or the gear part 240 can be in other circular arc shapes, which can be selected according to the arranged driving teeth 241.

[0052] In this embodiment, the number of driving teeth 241 is four, and the included angle between the adjacent two driving teeth 241 is 30°. Correspondingly, the rack 230 has at least four teeth, and the adjacent two teeth form a tooth groove for engaging with the driving teeth 241. Thus, the blade 212 in this embodiment can switch between the five angles of 0°, 15°, 45°, 75° and 90°, satisfying various use requirements. In addition, in other embodiments, the number of driving teeth 241 can also be set to other appropriate values. In other embodiments, the included angle between the adjacent two driving teeth 241 can also be other appropriate values.

[0053] In other embodiments, the plurality of driving teeth 241 can also be arranged non-uniformly, so that the blade 212 can switch between the non-uniformly distributed included angles.

[0054] With reference to Figure 3 and Figure 4 In this embodiment, a plurality of locking grooves 215 are formed on the tool holder 211, the number of the locking grooves 215 is the same as the number of the driving teeth 241, and the included angle between the adjacent two locking grooves 215 is the same as the included angle between the adjacent two driving teeth 241. The driving member 220 is connected with a locking block 222, which can be inserted into the locking groove 215 to cooperate with the locking groove 215 or separated from the locking groove 215 under the manual driving of the user.

[0055] When the blade 212 is rotated to a certain angle so that the corresponding driving tooth 241 is engaged with the rack 230, the locking block 222 can be inserted into and matched with a locking groove 215 to prevent the blade holder 211 from rotating, so that the blade 212 can be fixed to work at the current angle; when it is necessary to switch the angle of the blade 212, the user removes the locking block 222 from the locking groove 215, at this time the blade holder 211 can be rotated to adjust the angle of the blade 212.

[0056] Specifically in the embodiment, the locking block 222 is connected to a lever structure, an end of the lever structure away from the locking block 222 extends out of the shell 100 for the user to operate; when the user presses the lever structure, the locking block 222 is lifted to be inserted into the locking groove 215, and after the user releases the lever structure, the locking block 222 falls to be separated from the locking groove 215.

[0057] The above only describes the preferred embodiment of the utility model, so equivalent changes or modifications made according to the structure, features and principles described in the utility model patent application range are included in the utility model patent application range.

Claims

1. A tool bit angle switching structure for a tool, characterized by, The tool head angle switching structure (200) comprises: A tool head (210) with a blade (212) fixedly arranged thereon; A driving member (220) slidably arranged in a housing (100) of the tool (1000), the tool head (210) being rotatably connected to the driving member (220); A rack (230) fixed to an inner wall of the housing (100), the rack (230) being located at one side of the tool head (210); A gear portion (240) fixedly connected to the tool head (210), the gear portion (240) being oppositely arranged with the rack (230), and the gear portion (240) having a plurality of driving teeth (241) engaged with the rack (230), the plurality of driving teeth (241) being arranged in an arc shape.

2. The insert angle switching structure for a cutting tool according to Claim 1, wherein The rack (230) is arranged in a straight line, and the rack (230) is parallel to the sliding direction of the driving member (220).

3. The insert angle switching structure for a cutting tool according to Claim 1, wherein The plurality of driving teeth (241) are uniformly spaced.

4. The insert angle switching structure for a cutting tool according to Claim 1 or 3, wherein Among the plurality of driving teeth (241), the included angle between the first and last driving teeth (241) is 90°.

5. The insert angle switching structure for a cutting tool according to Claim 4, wherein The number of the driving teeth (241) is four, and the included angle between adjacent two driving teeth (241) is 30°.

6. A tool-bit angle switching structure for a tool according to claim 5, wherein The rack (230) has at least four teeth, and adjacent two teeth form a tooth groove engaged with the driving teeth (241).

7. The insert angle switching structure for a cutting tool according to Claim 4, wherein The gear portion (240) is 1 / 4 circular, and the driving teeth (241) are uniformly arranged on the outer periphery of the 1 / 4 circle.

8. The insert angle switching structure for a cutting tool according to Claim 1, wherein The tool head (210) comprises a tool holder (211) provided with a mounting groove (213) penetrating one side of the tool holder (211), and the blade (212) is clamped and fixed in the mounting groove (213) and exposed outside the mounting groove (213).

9. The tool bit angle switching structure for a tool according to claim 8, wherein The tool holder (211) is provided with an axis of rotation (214) perpendicular to the blade (212), and the driving member (220) is provided with an axis hole (221) rotatably matched with the axis of rotation (214).

10. The tool bit angle switching structure for a tool according to claim 8, wherein A plurality of locking grooves (215) are formed in the tool holder (211), the number of the locking grooves (215) being the same as that of the driving teeth (241), and the included angle between adjacent two locking grooves (215) being the same as that between adjacent two driving teeth (241); the driving member (220) is connected with a locking block (222) capable of being matched with the locking grooves (215) to prevent the tool holder (211) from rotating.

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