WO2015135154A1 - 可更换刀片的刀具 - Google Patents

可更换刀片的刀具 Download PDF

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Publication number
WO2015135154A1
WO2015135154A1 PCT/CN2014/073280 CN2014073280W WO2015135154A1 WO 2015135154 A1 WO2015135154 A1 WO 2015135154A1 CN 2014073280 W CN2014073280 W CN 2014073280W WO 2015135154 A1 WO2015135154 A1 WO 2015135154A1
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WO
WIPO (PCT)
Prior art keywords
blade
housing
tool
cover
disposed
Prior art date
Application number
PCT/CN2014/073280
Other languages
English (en)
French (fr)
Inventor
王伟毅
Original Assignee
杭州巨星工具有限公司
杭州巨星科技股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 杭州巨星工具有限公司, 杭州巨星科技股份有限公司 filed Critical 杭州巨星工具有限公司
Priority to US14/370,008 priority Critical patent/US9808942B2/en
Priority to PCT/CN2014/073280 priority patent/WO2015135154A1/zh
Publication of WO2015135154A1 publication Critical patent/WO2015135154A1/zh

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B5/00—Hand knives with one or more detachable blades
    • B26B5/001—Hand knives with one or more detachable blades with blades being slid out of handle immediately prior to use
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B5/00—Hand knives with one or more detachable blades

Definitions

  • the present invention relates to a tool, and more particularly to a tool having a replaceable blade and which can automatically change the blade.
  • the blade is extremely vulnerable during use, and how to replace the blade safely and quickly is a problem to be solved.
  • the tool that can automatically change the blade generally includes a movable blade holder structure and a spare magazine in the same lateral direction as the blade is retracted for placing the spare blade. .
  • the blade needs to be replaced, as long as the longitudinal position of the blade is automatically changed to the position where the blade is used, the original blade can be replaced to realize automatic tooling.
  • US Patent US6553674 A utility knife with a spare magazine and automatic blade replacement is disclosed.
  • the cover body is provided with a magazine door at the position of the magazine, the magazine door is connected with the shell of the knife through the upper pivot, the magazine has a spring lock, and when the spring lock is opened, the door edge of the magazine The pivot opens.
  • the drawback of this design is that the gap between the pivot of the magazine door and the housing of the knife is as small as possible because of the need to keep the close cooperation between the magazine door and the housing of the knife, so the magazine door can only be opened to At around 90 degrees, this makes it difficult to place and remove spare blades. It is also very easy for a very thin blade to injure the user.
  • the design of the spring lock also occupies space, making the structure less compact.
  • the object of the present invention is to provide a tool having a simple structure for replacing the blade and facilitating the replacement of the blade.
  • the present invention provides a tool for a replaceable blade comprising a housing, a cover disposed on the housing, and a tool holder disposed between the housing and the cover, Characterized in that the tool holder is mounted with a blade movable between extended and retracted positions, and a peripheral portion of the adjacent position of the retracted position of the blade is provided with a magazine holder, the magazine holder having The internal space of the blade shape for placing the blade to be used. Wherein the cover body is openably connected to the housing, and the tool holder is fixed between the cover body and the housing.
  • the housing and the cover are hinged together by a pivot.
  • the housing has a front portion and a rear portion, the tool holder is disposed at the front portion for mounting the blade, and the rear portion is provided with a receiving portion for placing a spare blade, the cover body The tool holder and the receiving portion are enclosed within the housing.
  • the tool holder at the front of the housing includes a cartridge along which movement of the blade mounted on the cartridge is translated between two locations that are exposed outside the housing and received within the housing.
  • the tool holder further includes a slide control member including a hand-held portion external to the housing and a connecting portion that extends downwardly from the cartridge.
  • the connecting portion is two parts, an upper portion and a lower portion, the lower portion has a side convex toward the housing direction, and a spring is disposed between the bottom portion of the lower portion and the contact surface of the cartridge, and the housing is in the sliding
  • the control member has spaced depressions within the stroke range, The side protrusions are located within the recess.
  • the blade has a locking portion, which is a notch or a through hole in the blade back, and the blade is detachably fixed to the cartridge by the locking portion.
  • the tool holder further includes a blade lock disposed on the other side of the cartridge relative to the blade, having a locking tongue for locking in the locking portion of the blade and for receiving an external force
  • the blade lock is away from the pushing portion in the direction of the blade.
  • the housing has an unlocking member corresponding to the position of the blade lock pushing portion, and includes a push spring to apply a force to the pushing portion.
  • the tool holder also includes an upper blade member that is a magnetic member disposed on the cartridge.
  • the cover body is provided with a elastic piece disposed inside the cover body, and the position of the elastic piece corresponds to the position of the standby blade stored in the internal space of the tool holder.
  • the cover body is provided with a switch mechanism for controlling opening and closing of the cover body and the housing.
  • the switch mechanism includes a triggering element on an outer side of the cover body and a contact element connected to the triggering element, and when the switch mechanism is in a closed state, the contact element is fixedly coupled with the housing, when In the open state, the switching element is separated from the housing such that the cover and the housing are separated.
  • the fixed and disengaged state of the contact element with the housing can be controlled by pressing, turning or pushing the triggering element.
  • the cover body is provided with a through hole, the triggering element is disposed inside the through hole, the switch mechanism further includes a switch spring, the switch spring is disposed on the front side inner wall of the hole and the Trigger between components.
  • the contact member is a hook member extending from the bottom of the trigger member, and a corresponding side groove in the housing has a side groove for receiving and catching the hook portion of the hook member.
  • the triggering element comprises a groove body having two side vertical walls and a pushing surface, the two side vertical walls respectively have two holes, one of the pins passes through the hole, and the pin shaft is provided with a compression spring Located between the groove body and the pushing surface, the upper surface of the pushing surface is used for hand pushing, and the side of the pushing surface has two ears extending downward from both sides of the pushing surface, and the ear has respectively
  • a push hole may be passed through the pin, so that the push surface is mounted on the upper portion of the groove body through the pin shaft, and the front portion of the push surface has a blocking portion extending downward from the front edge of the push surface.
  • the through hole of the cover body has a limiting member located above the switch spring, and the blocking portion is disposed at the limiting member.
  • the switch mechanism further includes a fixing member that fixes the trigger member and the contact member to the cover in a vertical direction.
  • An auxiliary spring is also disposed between the cover and the housing.
  • the housing further includes an elastic bracket mounted on the housing adjacent to the receiving portion, and the elastic end of the elastic bracket extends above the receiving portion to reserve the inside of the receiving portion
  • the blade is fixed in the receiving portion.
  • Figure 1 is an external schematic view of a specific embodiment of the present invention.
  • Figure 2 is a view showing the opening of the cover of the embodiment of the present invention.
  • Figure 3 is an exploded view of the rear portion of the housing in accordance with an embodiment of the present invention.
  • Fig. 4 is a schematic view showing the inside of a cover body according to a specific embodiment of the present invention.
  • Figure 5 is an exploded view of the front portion of a particular embodiment of the present invention.
  • Figure 6 is a top plan view of a particular embodiment of the present invention.
  • the tool of the replaceable blade of the present invention comprises a housing 1, a cover 2 disposed on the housing 1, and a tool holder 3 disposed between the housing and the cover, wherein a blade 4 that is movable between extended and retracted positions is mounted on the tool holder, and a magazine holder 34 is disposed on an outer periphery of the adjacent position of the retracted position of the blade, the magazine holder having a blade-shaped internal space.
  • the cover 2 is openably connected to the housing 1 and the tool holder 3 is fixed between the cover 2 and the housing 1.
  • the blade to be used can be conveniently placed in the magazine holder 34, and the cutter can be normally used when the cover is closed.
  • the housing has a front portion 11 and a rear portion 12, and a knife holder 3 is disposed in the front portion for mounting and using the blade to be used, and a handle is provided at the handle of the rear portion of the housing. 121, a spare blade can be placed, and the cover 2 can be opened as a whole or only the portion at the tool holder can be opened.
  • the cover 2 is integrally connected to the housing 1 to enclose the tool holder 3 and the receiving portion 121 in the housing 1.
  • the housing and the cover are hinged together by a pivot 21.
  • the hinge is located at the rear of the housing and the cover, and may be in other positions so that the housing and the cover can be opened and closed along the hinge of the pivot.
  • the cover body is provided with a switch mechanism 22 for controlling opening and closing of the cover body and the housing.
  • the switch mechanism 22 is located at the position where the hand holds the thumb of the cutter for convenient use.
  • the tool holder 3 at the front of the housing includes a cartridge 31 on which the blade is mounted, and the cartridge can be moved back and forth along the tool holder such that the blade 4 mounted on the cartridge 31 is exposed outside the housing and housed in the housing. Conversion between locations.
  • the cartridge can be slid back and forth along the tool holder to drive the blade mounted on the cartridge to move back and forth, and to be stored in the housing when extending out of the housing or moving backward when moving forward.
  • the tool holder 3 further includes a slide control member 32 extending from the upper end of the cartridge 31 to the outside of the upper portion of the housing 1, facilitating the user to hold and slide the blade holder, and the blade placed on the blade holder.
  • the housing 1 leaves a space within the range of travel of the slide control for the slide control 32 to move.
  • the slide control member 32 includes a hand-held portion 321 located outside the casing and a connecting portion 322 extending downwardly from the hand-held portion to the cartridge. Moving the hand-held portion 321 and its connecting portion 322 can drive the cartridge to move.
  • the connecting portion has two portions, an upper portion and a lower portion, the lower portion has a side convex toward the housing direction, and a spring 323 is provided between the bottom portion of the lower portion and the contact surface of the cartridge.
  • the housing has spaced depressions 324 over the range of travel of the slide control. Normally, since the undercut of the lower portion of the connecting portion is located within the recess, the connecting portion can only be located at the position of the recess 324 of the housing within the range of travel of the slide control member. When the hand portion of the slide control member is depressed, the spring is compressed, and at this time, the lower portion having the side protrusions moves downward until the housing has a recessed lower space, so that the lower portion having the side protrusions is not blocked.
  • the slide control can move freely within the travel range of the housing.
  • the spring bounces the connecting portion 322 upward, which causes the side protrusion of the lower portion of the connecting portion to enter the recess in the stroke range of the housing slide control member.
  • the side of the recess of the housing 1 in the stroke range of the slide control member 32 blocks the movement of the lower portion of the connecting portion, so that the slide control member cannot be moved at this time, so that the slide control member is not accidentally prevented. Slide the blade out to keep the user safe.
  • the blade has a locking portion 41 which is a notch on the back of the blade and can also be a through hole in the blade.
  • the knife blade is detachably fixed to the cartridge by a locking portion.
  • the tool holder further includes a blade lock 33 which is disposed on the other side of the cartridge 31 with respect to the blade 4, and is provided with a locking tongue 331 for being caught in the blade locking portion 41 and for receiving an external force and the blade locking away from the blade
  • the pushing portion 332 that swings in the direction. Normally, the bolt extends through the aperture in the corresponding position on the cartridge into the locking portion of the blade so that the blade can move back and forth along the cartridge and the blade lock.
  • the pushing portion 332 is depressed, and the locking tongue simultaneously moves backward with the pushing portion to be detached from the locking portion of the blade, so that the blade can be detached from the cartridge.
  • the pushing portion 332 of the blade lock 33 moves forward with the blade and the blade to the extended state of the blade, at which time the pushing portion passes through the hole in the magazine holder 34. 342 exposed. After pushing the pusher, pull the blade from the extension of the blade and the blade can be removed.
  • the blade lock 33 is coupled to the corresponding position of the cartridge by a lower shaft structure.
  • the cover body has an unlocking member 24 corresponding to the position of the blade lock pushing portion, and includes a push spring 241.
  • the push spring When the push spring is pushed from the outside of the housing, the push spring passes through the hole in the magazine rack.
  • the 342 applies a downward force to the pushing portion so that the locking tongue simultaneously moves downwardly with the pushing portion to disengage from the locking portion of the blade. At this time, the blade is pulled in the direction in which the blade extends, and the blade can be removed. In order to replace the new standby blade.
  • the standby blade placed in the internal space of the magazine shelf is the same as when the blade is retracted, so that when the blade is used for removal.
  • the blade to be used automatically enters the cartridge and can be used normally.
  • the blade to be used is corresponding to the setting portion of the blade placing the blade, so that the blade on the blade holder can be removed, and the blade to be used can be directly moved to the setting portion to realize automatic tooling. .
  • the tool holder further includes an upper blade member 35, which is to be biased by the blade to urge the blade to be used against the blade holder, so that the blade on the cartridge is removed, and the blade to be used is applied to move the blade to be moved to the mounting portion of the cartridge for automatic operation.
  • the upper blade member is a magnetic member that is fixed to the cartridge and is attracted to the blade to be used, thereby realizing automatic tooling.
  • the cover body further includes a spring piece 25 disposed on the inner side of the cover body, and the position of the spring piece corresponds to the position of the standby blade stored in the inner space of the tool magazine frame. Apply an inward force to the blade to ensure that the blade to be used remains in the magazine holder.
  • the switch mechanism includes a triggering component 221 on the outer side of the cover body and a contact component 222 connected to the triggering component.
  • the contact component 222 is fixedly coupled with the housing 1.
  • the contact element is separated from the housing, so that the cover body and the housing are separated.
  • the fixing and disengaging state of the contact member 222 and the housing 1 can be controlled by pressing, rotating, and pushing the trigger member 221.
  • the present invention achieves control of the fixed and disengaged state of the contact element and the housing by pushing the triggering element.
  • the cover body is provided with a through hole 23, and the switch mechanism further includes a switch spring 223.
  • the trigger element 221 is disposed inside the through hole 23, and the surface of the trigger element is slightly higher than the surface of the cover body 2, thereby facilitating hand pushing.
  • the switch spring 223 is disposed between the front inner wall of the through hole 23 and the triggering member.
  • the contact member 222 is a hook member extending from the bottom of the trigger member and has a side groove 122 at a corresponding position in the housing to receive and catch the hook portion of the hook member.
  • the triggering member is designed as a spring clip structure, and the triggering member 2211 includes a groove body 2212 having two side standing walls and a push.
  • the face 2216 has two holes 2213 respectively on the two side standing walls, and a pin 2214 passes through the hole.
  • the pin shaft is provided with a compression spring 2215. The upper surface of the push surface is used for pushing, and the side of the push surface is pushed.
  • Two sides 2217 extend downwardly on both sides of the face, and the ear has a hole 2218 through which the pin can pass, so that the push surface is mounted on the upper part of the groove body through the pin shaft, and the front part of the push surface has a blocking portion 2219. Extending downward from the ear from the front edge of the push surface.
  • the through hole of the cover body has a limiting member 231 located above the switch spring, and the blocking portion is disposed at the limiting member. Pushing the triggering element forward, because the blocking part is blocked at the limiting piece, the triggering element cannot move forward, and the switching mechanism cannot be used normally.
  • the blocking portion is located above the limit member, and the triggering element can be pushed.
  • the contact element moves forward as a whole so that the cover can be opened, after which the trigger element is reset by the action of the switching spring, and the push surface is also reset by the action of the compression spring.
  • the limiting member extends from the side wall of the through hole and is located above the switch spring. When the front portion of the triggering member is lifted due to the rear pressing, the limiting member is located below the blocking portion of the triggering member.
  • the limiting member blocks the blocking portion of the triggering member from moving forward, thereby preventing the cover from being opened from the housing to ensure the user's Safety.
  • the hook element as the contact element 222 may be integral with the bottom of the slot 2212 of the trigger element, or it may be a fixed connection.
  • the switching mechanism further includes a fixing member 223 that fixes the triggering member and the contact member to the cover in a vertical direction without affecting the movement of the triggering member in the lateral direction.
  • the fixing member is a card that engages the contact member at the bottom of the cover.
  • the card is a sheet-like body having a recess in the middle that accommodates a portion of the corresponding section of the triggering element.
  • An auxiliary spring 224 is further disposed between the cover body and the housing, and is located in a recess beside the cover contact member. When the cover body and the housing can be opened, the cover body and the housing are bounced for convenient use.
  • the housing of the present invention further includes a resilient bracket 122 at the portion of the receiving portion, and is mounted on the housing adjacent to the receiving portion.
  • the elastic end of the elastic bracket extends above the receiving portion to fix the spare blade in the receiving portion in the receiving portion.
  • There are two inclined support frames in the accommodating portion so the spare blade can be disposed obliquely in the accommodating portion for convenient storage and removal, and the inclined lower portion is used for storing the blade portion of the blade, thereby ensuring the safety of the user.

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Knives (AREA)

Abstract

一种可更换刀片的刀具，包括壳体（1），设置在所述壳体上的盖体（2），以及设置在所述壳体和盖体之间的刀架（3），所述刀架上安装有可以在伸出和收缩的位置间移动的刀片（4），并且在所述刀片的收缩位置的相邻位置上的外周设置有刀库架（34），所述刀库架具有刀片形状的内部空间，用于放置待用刀片。其中，所述盖体可开启地连接在所述壳体上，将所述刀架固定于所述盖体和壳体之间。该刀具结构简单，更换刀片更加方便迅速。

Description

可更换刀片的刀具
技术领域
本发明涉及一种刀具，更确切地说涉及一种具有可更换刀片的，并且可自动更换刀片的刀具。
背景技术
对于美工刀等需要刀片很薄的刀具来说，刀片在使用的过程中极易损坏，如何安全快速的更换刀片是需要解决的问题。目前可自动更换刀片的刀具一般来说，包括可以移动的带有刀片的刀架结构，以及在刀片收缩的状态下，与刀片处于同样横向方向处于同样位置的备用刀库，用于放置备用刀片。在需要更换刀片的时候，只要自动变换刀片的纵向位置到使用刀片的位置上，替代原有的刀片即可，实现自动上刀。
美国专利 US6553674 揭露了一种带备用刀库，并且可自动更换刀片的实用刀。其中在盖体在刀库的位置上设置一个刀库门，刀库门通过上方的枢轴与刀的壳体连接，刀库具有一个弹簧锁，当打开弹簧锁的时候，刀库的门沿枢轴打开。该设计的缺陷是，由于需要保持刀库门与刀的壳体的紧密配合，刀库门枢轴处与刀的壳体之间的缝隙尽量小，所以刀库门只能开启到 90 度左右，这样给放置和取出备用刀片造成困难，对于很薄的刀片来说也很容易伤到使用者，另外弹簧锁的设计也会占有空间，使结构不够紧凑。
所以市场上还需要能够方便安全地放置备用刀片的实用刀。
发明内容
本发明的目的是提供一种刀具，其备用刀片存放在手柄处，盖体可以整体打开，方便安全地更换刀片。
本发 明的目的是提供一种刀具，其更换刀片的结构简单，更换刀片方便迅速。
为实现上述目的，本发明提供了一种可更换刀片的刀具包括壳体，设置在所述壳体上的盖体，和设置在所述壳体和所述盖体之间的刀架，其特征在于，所述刀架上安装有可以在伸出和收缩的位置间移动的刀片，并且在所述刀片的收缩位置的相邻位置上的外周设置有刀库架，所述刀库架具有刀片形状的内部空间，用于放置待用刀片。其中，所述盖体可开启地连接在所述壳体上，将所述刀架固定于所述盖体和所述壳体之间。
所述壳体和所述盖体通过枢轴铰接在一起。
所述壳体具有前部和后部，所述刀架设置在所述前部，用于安装所述刀片，所述后部设有收容部，可以放置备用刀片，所述盖体将所述刀架和所述收容部封闭在所述壳体内。
所述位于壳体前部的刀架包括刀片架，可以沿所述刀架运动使安装在所述刀片架上的刀片在露出所述壳体外和收纳在所述壳体内两个位置间转换。
所述刀架还包括滑动控制件，所述滑动控制件包括位于所述壳体外部的手持部和手持部向下延伸与刀片架连接的连接部。
所述连接部分为两部分，上部和下部，所述下部具有朝向壳体方向的侧凸，所述下部的底部与所述刀片架的接触面之间有弹簧，所述壳体在所述滑动控制件的行程范围内具有间隔的凹陷， 所述侧凸位于所述凹陷内 。
所述刀片上有锁止部，所述锁止部为刀片脊背上的缺口或通孔，所述刀片通过所述锁止部可拆卸地固定在所述刀片架上。
所述刀架还包括刀片锁，设在所述刀片架相对于所述刀片的另一侧，其上设有用于卡在所述刀片的锁止部内的锁舌以及用于接受外力令所述刀片锁远离所述刀片方向的推抵部。
所述壳体相应于刀片锁推抵部的位置具有一个解锁件，包括推簧，向所述推抵部施加力。
所述刀架还包括上刀件，为设置在刀片架上的磁性元件。
所述 盖体上设置有弹片，设置在所述盖体内侧，所述弹片的位置与所述刀库架的内部空间中存放的待用刀片的位置相对应。
所述盖体上设置有开关机构，用于控制所述盖体与所述壳体的打开和关闭。
所述开关机构包括位于所述盖体外侧上的触发元件和与所述触发元件相连的接触元件，当所述开关机构关闭状态下，所述接触元件与所述壳体配合固定，当所述开关机构在打开状态下，所述接触元件与所述壳体分开，从而所述盖体和所述壳体分开。
可以通过按压，转动或推动所述触发元件来控制所述接触元件与所述壳体的固定和分离状态。
所述盖体上设有一个通孔，所述触发元件设置在所述通孔的内部，所述开关机构还包括开关弹簧，所述开关弹簧设置在通所述孔的前侧内壁与所述触发元件之间。
所述接触元件为一个钩状元件，从触发元件的底部延伸下来，所述壳体内的相应位置上有一个侧槽，可以容纳并卡住所述钩状元件的钩部。
所述触发元件包括一个具有两个侧立壁的槽体和一个推面，两个侧立壁上分别具有两个孔，有一个销轴从所述孔中间通过，所述销轴上装有一个压簧位于所述槽体和推面之间，所述推面的上表面供手推使用，所述推面的侧部从推面的两侧向下延伸有两个耳，所述耳上分别具有可以通过销轴的洞，从而通过所述销轴将所述推面安装在所述槽体的上部，推面的前部具有一个阻挡部，从推面的前边缘沿耳向下延伸，所述盖体的所述通孔内具有一个限位件，位于所述开关弹簧的上面，所述阻挡部设置在所述限位件处。
所述开关机构还包括一个固定件，将所述触发元件和所述接触元件在垂直的方向上固定在盖体上。
所述盖体和壳体之间还设置一个辅助弹簧。
所述壳体在收容部还包括弹性支架，安装在所述收容部旁的所述壳体上，所述弹性支架的弹性端延伸到所述收容部的上方，可以将所述收容部内的备用刀片固定在所述收容部内。
以下将结合附图对本发 明的构思、具体结构及产生的技术效果作进一步说明，以充分地了解本发明的目的、特征和效果。
附图说明
图1是本发明具体实施例的外部示意图。
图2是本发明具体实施例的盖体打开图。
图3是本发明具体实施例壳体后部的爆炸图。
图4是本发明具体实施例的盖体内侧示意图。
图5是本发明具体实施例前部的爆炸图。
图6是本发明具体实施例的上视图。
具体实施方式
如图所示1-3所示，本发明的可更换刀片的刀具包括壳体1，设置在壳体1上的盖体2，和设置在壳体和盖体之间的刀架3，其中，刀架上安装有可以在伸出和收缩的位置间移动的刀片4，并且在刀片的收缩位置的相邻位置上的外周设置有刀库架34，刀库架具有刀片形状的内部空间，用于放置待用刀片，其中，盖体2可开启地连接在壳体1上，将刀架3固定于盖体2和壳体1之间。这样在打开盖体时，刀库架的内部空间全方位地露出来，可以方便地将待用刀片放置在刀库架34中，在关闭盖体的时候，刀具就可以正常使用了。
在本发明具体实施例中，壳体具有前部11和后部12，前部内设有刀架3，用于安装使用刀片和容纳待用刀片，壳体后部的手柄处设有收容部121，可以放置备用刀片，盖体2可以整体打开或只打开刀架处的部分。在本发明具体实施例中，盖体2可整体开启地连接在壳体1上，将刀架3和收容部121封闭在壳体1内。
其中壳体和盖体通过枢轴21铰接在一起。铰接处位于壳体和盖体的尾部，也可以处于其它位置，从而壳体和盖体可沿枢轴的铰接处打开和关闭。盖体上设置有开关机构22，用于控制盖体与壳体的打开和关闭。开关机构22位于手握住刀具的拇指的位置，方便使用。
位于壳体前部的刀架3包括刀片架31，刀片安装在刀片架上，刀片架可以沿刀架前后运动使安装在刀片架31上的刀片4在露出壳体外和收纳在壳体内两个位置间转换。换句话说，刀片架可以沿刀架前后滑动，带动安装在刀片架上的刀片前后运动，向前运动时伸出壳体外或向后运动时收纳于壳体。
在此以滑动方式举例，刀架3还包括滑动控制件32从刀片架31的上端延伸到壳体1上部的外侧，方便用户手持并滑动刀架，以及置于刀架上的刀片。壳体1在滑动控制件的行程范围内留有空间，供滑动控制件32移动。滑动控制件32包括位于壳体外部的手持部321和手持部向下延伸与刀片架连接的连接部322。移动手持部321及其连接部322，即可带动刀片架移动。进一步，连接部分为两部分，上部和下部，下部具有朝向壳体方向的侧凸，下部的底部与刀片架的接触面之间有弹簧323。壳体在滑动控制件的行程范围内具有间隔的凹陷324。正常情况下，由于连接部下部的侧凸位于所述凹陷内，连接部只能位于壳体在滑动控制件行程范围内的凹陷324的位置上。在压下滑动控制件的手持部的时候，弹簧被压缩，这时，具有侧凸的下部向下运动至壳体具有相间隔的凹陷的下部空间，所以具有侧凸的下部不会被阻挡，这时滑动控制件可以自由在壳体的行程范围内运动。当不对滑动控制件32的手持部321施加向下的压力的时候，弹簧将连接部322向上弹起，这使，连接部下部的侧凸进入到壳体滑动控制件的行程范围内的凹陷中，这时，壳体1在滑动控制件32的行程范围内的凹陷的侧部会阻挡连接部下部的运动，所以，这时，滑动控制件是无法移动的，这样保证滑动控制件不会不小心将刀片滑出，保证使用者的安全。
刀片上有锁止部41，锁止部为刀片脊背上的缺口，也可为刀片上的通孔。刀刀片通过锁止部可拆卸地固定在刀片架上。
刀架还包括刀片锁33，其设置在刀片架31相对于刀片4的另一侧，其上设有用于卡在刀片锁止部41内的锁舌331以及用于接受外力另刀片锁远离刀片方向摆动的推抵部332。正常情况下，锁舌穿过刀片架上的相应位置上的孔伸入刀片的锁止部内，从而刀片可沿刀片架和刀片锁一起前后移动。当刀片需要更换的时候，下压推抵部332，锁舌同时随推抵部向后运动，从刀片的锁止部上脱离，从而刀片可以从刀片架上卸下。在本具体实施例中，刀片在伸出状态下，刀片锁33的推抵部332随刀片架和刀片向前运动至刀片伸出状态，这时，推抵部通过刀库架34上的孔342露出。推动推抵部后，从刀片的伸出口拉动刀片，刀片即可卸下。
刀片锁33通过下部的轴结构与刀片架的相应位置轴连接。在刀片的滑出状态下，盖体相应于刀片锁推抵部的位置具有一个解锁件24，包括推簧241，从壳体外部推动推簧的时候，推簧穿过刀库架上的孔342给推抵部施加向下的力，从而锁舌同时随推抵部向下运动，从刀片的锁止部上脱离，这时，向刀片伸出的方向拉动刀片，可以将刀片卸下。以便更换新的待用刀片使用。
刀库架内部空间中放置的待用刀片与使用刀片缩回时的位置相同，这样，当使用刀片卸下后。待用刀片自动进入刀片架上，并可以正常使用。换句话说，刀片架缩回时待用刀片对应刀片架放置刀片的设置部，以便将刀架上的刀片取下后将待用刀片在位置关系上能够直接被移动至安置部实现自动上刀。
刀架还包括上刀件35，其对待用刀片施力令待用刀片靠向刀架，以便刀片架上的刀片取下后对待用刀片施力，将待用刀片移至刀片架的安置部实现自动上刀。在本实施例中，上刀件为磁性元件，固定在刀片架上，对待用刀片产生吸引力，从而实现自动上刀。
在本发明具体实施例中，如图4所示，盖体上还包括一个弹片25，设置在盖体内侧，弹片的位置与刀库架的内部空间中存放的待用刀片的位置相对应，对待用刀片施加一个向内的力，保证待用刀片留在刀库架中。
具体在本实施例中，如图5-6开关机构包括位于盖体外侧上的触发元件221和与触发元件相连的接触元件222，当开关机构关闭状态下，接触元件222与壳体1配合固定，当开关机构在打开状态下，接触元件与壳体分开，从而盖体和壳体分开。
可以通过按压，转动，推动触发元件221来控制接触元件222与壳体1的固定和分离状态。本发明通过推动触发元件，来实现控制接触元件与壳体的固定和分离状态。具体地，盖体上设有一个通孔23，开关机构还包括开关弹簧223，触发元件221设置在通孔23的内部，并且触发元件表面略高于盖体2的表面，从而方便手推动。开关弹簧223设置在通孔23的前侧内壁与触发元件之间。接触元件222为一个钩状元件，从触发元件的底部延伸下来，壳体内的相应位置上有一个侧槽122，可以容纳并卡住钩状元件的钩部。当向前推动触发元件时，钩状元件从壳体上的侧槽中脱出，从而盖体与壳体分离，开关弹簧自动将触发元件复位。钩状元件的顶部具有一个斜面，当将盖体与壳体闭合时，钩状元件沿顶部的斜面在开关弹簧的配合下卡入壳体上的侧槽中，之后触发元件在开关弹簧的作用下复位，盖体和壳体结合完毕。
进一步，为了防止工作人员不小心推动触发元件，从而打开盖体，造成里面刀片脱落等严重后果，触发元件设计成弹簧夹结构，触发元件2211包括一个具有两个侧立壁的槽体2212和一个推面2216，两个侧立壁上分别具有两个孔2213，孔中间有一个销轴2214通过，销轴上装有一个压簧2215，推面的上表面供手推使用，推面的侧部从推面的两侧向下延伸有两个耳2217，耳上分别具有可以通过销轴的洞2218，从而通过销轴将推面安装在槽体的上部，推面的前部具有一个阻挡部2219，从推面的前边缘沿耳向下延伸。盖体的通孔内具有一个限位件231，位于开关弹簧的上面，阻挡部设置在限位件处。向前推动触发元件，由于阻挡部挡在限位件处，触发元件无法向前移动，开关机构无法正常使用。当向下压动推面的后部的时候，推面的后部克服压簧的弹力向下，上部则沿销轴翘起，这时阻挡部位于限位件的上方，推动触发元件可以使接触元件整体向前移动，从而盖体可以被打开，之后，触发元件在开关弹簧的作用下复位，推面也在压簧的作用下复位。进一步，限位件是从通孔的侧壁延伸出来，位于开关弹簧的上方，当触发元件的前部由于后部下压后翘起的时候，限位件位于触发元件阻挡部的下方。当触发元件后部没有下压的力的时候，前部没有翘起，这时，限位件阻挡触发元件的阻挡部向前移动，从而阻止盖体从壳体被打开，以保证使用者的安全。推面的后部有一个凹陷，方便手指放入给推面一个在后部下压的力。在这个实施例中，作为接触元件222的钩状元件可以与触发元件的槽体2212底部为一体，也可以是固定连接。开关机构还包括一个固定件223，将触发元件和接触元件在垂直的方向上固定在盖体上，在横向的方向上不影响触发元件移动。具体的，固定件是一个卡片，将接触元件卡在盖体的底部。卡片为一个片状体，中间具有一个凹部，可以将触发元件的相应截面的部分容纳其中。在盖体和壳体之间还设置一个辅助弹簧224，位于盖体接触元件的旁边的凹槽内，当盖体和壳体可以打开的时候，将盖体和壳体弹开，方便使用。
本发明的壳体在收容部的部分还包括弹性支架122，安装在收容部旁的壳体上，弹性支架的弹性端延伸到收容部的上方，可以将收容部内的备用刀片固定在收容部内。收容部内有两个倾斜的支撑架，所以备用刀片可以倾斜的设置在收容部内，方便存放和取出，并且倾斜的下部用于存放刀片的刃部，从而保证使用者的安全。
以上详细描述了本发明的较佳具体实施例。应当理解，本领域的普通技术人员无需创造性劳动就可以根据本发明的构思作出诸多修改和变化。因此，凡本技术领域中技术人员依本发明的构思在现有技术的基础上通过逻辑分析、推理或者有限的实验可以得到的技术方案，皆应在由权利要求书所确定的保护范围内。

Claims (20)

  1. 一种可更换刀片的刀具包括壳体，设置在所述壳体上的盖体，和设置在所述壳体和所述盖体之间的刀架，其特征在于，所述刀架上安装有可以在伸出和收缩的位置间移动的刀片，并且在所述刀片的收缩位置的相邻位置上的外周设置有刀库架，所述刀库架具有刀片形状的内部空间，用于放置待用刀片。其中，所述盖体可开启地连接在所述壳体上，将所述刀架固定于所述盖体和所述壳体之间。
  2. 如权利要求1所述的可更换刀片的刀具，其特征在于，所述壳体和所述盖体通过枢轴铰接在一起。
  3. 如权利要求1所述的可更换刀片的刀具，其特征在于，所述壳体具有前部和后部，所述刀架设置在所述前部，用于安装所述刀片，所述后部设有收容部，用于放置备用刀片，所述盖体将所述刀架和所述收容部封闭在所述壳体内。
  4. 如权利要求3所述的可更换刀片的刀具，其特征在于，所述位于壳体前部的刀架包括刀片架，可以沿所述刀架运动使安装在所述刀片架上的刀片在露出所述壳体外和收纳在所述壳体内两个位置间转换。
  5. 如权利要求4所述的可更换刀片的刀具，其特征在于，所述刀架还包括滑动控制件，所述滑动控制件包括位于所述壳体外部的手持部和手持部向下延伸与刀片架连接的连接部。
  6. 如权利要求5所述的可更换刀片的刀具，其特征在于，所述连接部分为两部分，上部和下部，所述下部具有朝向壳体方向的侧凸，所述下部的底部与所述刀片架的接触面之间有弹簧，所述壳体在所述滑动控制件的行程范围内具有间隔的凹陷，所述侧凸位于所述凹陷内。
  7. 如权利要求5所述的可更换刀片的刀具，其特征在于，所述刀片上有锁止部，所述锁止部为刀片脊背上的缺口或通孔，所述刀片通过所述锁止部可拆卸地固定在所述刀片架上。
  8. 如权利要求7所述的可更换刀片的刀具，其特征在于，所述刀架还包括刀片锁，设在所述刀片架相对于所述刀片的另一侧，其上设有用于卡在所述刀片的锁止部内的锁舌以及用于接受外力令所述刀片锁远离所述刀片方向的推抵部。
  9. 如权利要求8所述的可更换刀片的刀具，其特征在于，所述壳体相应于刀片锁推抵部的位置具有一个解锁件，包括推簧，向所述推抵部施加力。
  10. 如权利要求9所述的可更换刀片的刀具，其特征在于，所述刀架还包括上刀件，为设置在刀片架上的磁性元件。
  11. 如权利要求10所述的可更换刀片的刀具，其特征在于，所述盖体上设置有弹片，设置在所述盖体内侧，所述弹片的位置与所述刀库架的内部空间中存放的待用刀片的位置相对应。
  12. 如权利要求1或2所述的可更换刀片的刀具，其特征在于，所述盖体上设置有开关机构，用于控制所述盖体与所述壳体的打开和关闭。
  13. 如权利要求12所述的可更换刀片的刀具，其特征在于，所述开关机构包括位于所述盖体外侧上的触发元件和与所述触发元件相连的接触元件，当所述开关机构关闭状态下，所述接触元件与所述壳体配合固定，当所述开关机构在打开状态下，所述接触元件与所述壳体分开，从而所述盖体和所述壳体分开。
  14. 如权利要求12所述的可更换刀片的刀具，其特征在于，可以通过按压，转动或推动所述触发元件来控制所述接触元件与所述壳体的固定和分离状态。
  15. 如权利要求13所述的可更换刀片的刀具，其特征在于，所述盖体上设有一个通孔，所述触发元件设置在所述通孔的内部，所述开关机构还包括开关弹簧，所述开关弹簧设置在通所述孔的前侧内壁与所述触发元件之间。
  16. 如权利要求15所述的可更换刀片的刀具，其特征在于，所述接触元件为一个钩状元件，从触发元件的底部延伸下来，所述壳体内的相应位置上有一个侧槽，可以容纳并卡住所述钩状元件的钩部。
  17. 如权利要求16所述的可更换刀片的刀具，其特征在于，所述触发元件包括一个具有两个侧立壁的槽体和一个推面，两个侧立壁上分别具有两个孔，有一个销轴从所述孔中间通过，所述销轴上装有一个压簧位于所述槽体和推面之间，所述推面的上表面供手推使用，所述推面的侧部从推面的两侧向下延伸有两个耳，所述耳上分别具有可以通过销轴的洞，从而通过所述销轴将所述推面安装在所述槽体的上部，推面的前部具有一个阻挡部，从推面的前边缘沿耳向下延伸，所述盖体的所述通孔内具有一个限位件，位于所述开关弹簧的上面，所述阻挡部设置在所述限位件处。
  18. 如权利要求17所述的可更换刀片的刀具，其特征在于，所述开关机构还包括一个固定件，将所述触发元件和所述接触元件在垂直的方向上固定在盖体上。
  19. 如权利要求18所述的可更换刀片的刀具，其特征在于，所述盖体和壳体之间还设置一个辅助弹簧。
  20. 如权利要求19所述的可更换刀片的刀具，其特征在于，所述壳体在收容部还包括弹性支架，安装在所述收容部旁的所述壳体上，所述弹性支架的弹性端延伸到所述收容部的上方，可以将所述收容部内的备用刀片固定在所述收容部内。
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