WO2009135369A1 - 打印机 - Google Patents

打印机 Download PDF

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Publication number
WO2009135369A1
WO2009135369A1 PCT/CN2008/073312 CN2008073312W WO2009135369A1 WO 2009135369 A1 WO2009135369 A1 WO 2009135369A1 CN 2008073312 W CN2008073312 W CN 2008073312W WO 2009135369 A1 WO2009135369 A1 WO 2009135369A1
Authority
WO
WIPO (PCT)
Prior art keywords
printer
wrench
upper cover
opening
locking
Prior art date
Application number
PCT/CN2008/073312
Other languages
English (en)
French (fr)
Inventor
汤晓杰
郑磊
Original Assignee
山东新北洋信息技术股份有限公司
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 山东新北洋信息技术股份有限公司 filed Critical 山东新北洋信息技术股份有限公司
Priority to US12/990,906 priority Critical patent/US20110110699A1/en
Priority to EP08874163.2A priority patent/EP2284013B1/en
Publication of WO2009135369A1 publication Critical patent/WO2009135369A1/zh

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J29/00—Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for
    • B41J29/12—Guards, shields or dust excluders
    • B41J29/13—Cases or covers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J29/00—Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for
    • B41J29/02—Framework

Definitions

  • the present invention relates to a printing device, and in particular to a printer. Background technique
  • a paper bin that holds the paper roll is usually set inside the printer.
  • the operator opens the top cover by opening the top cover opening mechanism of the printer to complete the replacement of the paper roll.
  • the figure is a schematic diagram of the external structure of a conventional printer.
  • the printer upper cover 100 is hinged with the printer main body 300, and the printer upper cover 100 can be opened or closed with respect to the printer main body 300; the inside of the printer upper cover 100 is provided with a locking shaft (not shown), and the printer main body 300 An internal locking hook (not shown) is provided; one end of the opening wrench 200 is connected to the locking hook and the other end thereof extends from the outer surface of the printer main body 300; the locking hook is engaged with the locking shaft, so that the upper cover 100 is opposite to the locking cover The print body 300 is locked and closed.
  • the operator pulls the opening wrench 200, the locking hook rotates synchronously and disengages from the locking shaft, and the printer upper cover 100 is in a non-locking state. At this time, the printer upper cover is held. 100 continues to rotate until the printer top cover 100 is fully open relative to the printer body 300.
  • the opening mechanism of the above conventional printer has the disadvantage of inconvenient operation. After the operator pulls the opening wrench 200, the printer upper cover 100 can only be opened at a small angle with respect to the printer main body 300, which cannot meet the requirement of replacing the printing paper roll. The operator also needs to further hold the edge of the printer cover 100 to continue rotating so that the printer cover 100 is fully open relative to the printer body 300. In other words, a second operation is required to complete the opening of the printer cover.
  • the technical problem to be solved by the present invention is to provide a printer having a printer cover opening mechanism which is simple in structure and convenient in operation.
  • the printer provided by the invention comprises a printer body and a hinged hinged with the rear of the printer body
  • the upper cover body further includes an opening cover member, the middle portion of the upper wall of the upper cover body is provided with an opening, and the lower end of the opening cover member passes through the opening on the upper cover body and is engaged with the printer body;
  • the middle portion of the opening cover member is hinged to the upper cover body, and the opening cover member is rotated upward to achieve engagement and disengagement between the lower end portion and the printer body.
  • the upper surface of the upper cover body is provided with a concave receiving portion, and the opening cover member located above the upper cover body faces the concave receiving portion with a gap therebetween.
  • the inner IHJ receiving portion on the upper cover body is in a non-connecting relationship with the opening.
  • the recessed receiving portion on the side adjacent to the opening has a baffle.
  • the opening cover member is composed of a wrench and a hook mechanism, a middle portion of the wrench is hinged with the upper cover body, and the hook mechanism includes a lock hook and a locking shaft that is engaged with the lock hook.
  • the locking hook is disposed at a lower end of the wrench or a printer body, and the locking shaft is disposed in the printer body or a lower end of the wrench.
  • an elastic member having a pre-deformed and fixedly disposed between the wrench and the upper cover below the hinge point for realizing a lock between the wrench and the printer body tight.
  • the elastic member is a tension spring or a torsion spring.
  • the opening cover member is composed of a wrench assembly and a hook mechanism
  • the wrench assembly includes a wrench and a force transmission rod, and a middle portion of the wrench is hinged with the upper cover body, and the middle portion and the upper portion of the force transmission rod
  • the cover body is hinged, and an upper end of the force transmission rod abuts against a lower end of the wrench
  • the lock hook mechanism includes a lock hook and a locking shaft that is engaged with the lock hook, wherein the lock hook is disposed In the lower end of the force transmission rod or in the printer body, the locking shaft is disposed in the printer body or the lower end of the force transmission rod; the lower end of the wrench can push the upper end of the force transmission rod to realize The locking hook or locking shaft of the lower end of the force transmission rod is disengaged from the locking shaft or the locking hook in the printer body.
  • an elastic member having a pre-deformed and fixedly disposed between the force-transmitting rod below the hinge point and the upper cover body for realizing the force-measuring rod and the printer body The lock between the two.
  • the elastic member is a tension spring or a torsion spring.
  • the printer provided by the present invention is compared with the prior art, and the cover member and the The upper cover body is hinged, and the lower end of the opening cover member and the printer main body are engaged with each other; in the case where the printing paper roll needs to be replaced, the operator rotates the opening cover member outside the upper cover body, the opening The lower end of the cover member is disengaged from the printer body. At this time, the opening cover member is continuously pulled to achieve a fully open state between the upper cover and the printer body.
  • the operator can complete the effective opening of the upper cover body in one operation, and the opening step is simplified.
  • the concave receiving portion provided on the upper cover body can provide an operation space for the user, and at the same time, the baffle provided in the concave receiving portion blocks the concave receiving portion from being disconnected.
  • the two chambers are such that foreign matter that has been smuggled through the end of the opening member can be prevented from falling into the interior of the printer body through the opening.
  • the elastic member is fixedly disposed between the opening cover member below the hinge point and the printer body, and when assembled, the elastic member is pre-stretched or pre-compressed to It is ensured that the snap-fit connection relationship between the opening cover member and the printer body is in a clamped state.
  • 1 is a schematic view showing the external structure of a conventional printer
  • Figure 2 is a perspective view of the printer of the present invention
  • Figure 3 is a cross-sectional view taken along line I - I of Figure 2;
  • Figure 4 is a schematic view showing the structure of the opening member 3a in the first embodiment of the present invention.
  • Figure 5 is a view taken in the direction of D in Figure 4.
  • Figure 6 is a schematic view showing the open state of the upper cover 2 of the printer of the present invention.
  • Figure 7 is a schematic view showing the structure of the cover member and the related member in the reverse direction of the embodiment 1;
  • Figure 8 is a schematic view showing the structure of the cover member 3b according to the embodiment 2 of the present invention;
  • Fig. 9 is a schematic view showing the reverse arrangement of the opening cover member and related components in the second embodiment.
  • 1-printer body 2-upper cover; 21-opening; 22a, 22b-hinged shaft; 3a, 3b-opening cover member; 31a-wrench; 321a, 321b-locking hook; 31b-wrench assembly; 311b-wrench; 312b - force transmission rod; 322a, 322b - locking shaft; 4-elastic member; 5- concave receiving portion; 51-baffle; 6a, 6b- hinged hole; 7-paper bin. detailed description
  • FIG. 2 is a schematic diagram of the overall structure of the printer of the present invention.
  • the present invention mainly comprises a printer main body 1, an upper cover 2 hinged to the rear of the printer main body 1, and an opening cover member 3, wherein the print head, the paper feed roller and the cutter of the printer of the present invention are provided.
  • the structure and connection relationship of the main components such as the drive motor are the same as those in the prior art, and therefore will not be described here.
  • the design point of the present invention lies in the fact that the cover member 3 is combined with the structural design of the printer body 1 and the upper cover 2, and the cover member can be rotated upward to achieve a fully open state between the upper cover 2 and the printer body 1.
  • the following is a detailed description by two embodiments.
  • FIG. 3 is a cross-sectional view taken along line I - I of Fig. 2, in order to clearly show the technical solution of the present invention, this figure retains only the main components related to the present invention.
  • an opening 21 is formed in a middle portion of the upper wall of the upper cover 2, and a lower end of the opening cover member 3a passes through the opening 21 in the upper cover 2 and is engaged with the printer main body 1.
  • the middle portion of the opening cover member 3a is hinged to the upper cover body 2.
  • the opening cover member 3a on the upper cover 2 is rotated upward, that is, the opening member 3a is rotated about a hinge point of the middle portion thereof to engage and disengage the lower end portion thereof with the printer main body 1.
  • the upper surface of the upper cover 2 is provided with a concave receiving portion 5, an opening cover member 3a located above the upper cover 2 and the concave receiving portion. 5 and there is a gap 8 between the two.
  • the recessed receiving portion 5 can provide an operation space for the user, when the upper cover 2 needs to be opened. At this time, the user can complete the opening operation by the gap S between the opening cover member 3a and the recessed receiving portion 5.
  • the recessed receiving portion 5 on the side adjacent to the opening 21 has a baffle 51.
  • the inner IHJ receiving portion 5 on the upper cover 2 is not between the opening 21 and the opening 21
  • the realization of the connection relationship is not limited to the linear baffle structure described in the figure, and may be an arc baffle as long as it satisfies the needs of use. No longer - elaborate.
  • the opening cover member 3a is composed of a wrench 31a and a hook mechanism (not shown), and a middle portion of the wrench 31a is hinged with the upper cover body 2, and the hook mechanism includes a lock hook 321a and The locking hook 321a is engaged with the connected locking shaft 322a, wherein the locking hook 321a is disposed at a lower end of the wrench 31a, and the locking shaft 322a is disposed in the printer main body 1.
  • the locking hook is a movable end
  • the locking shaft is a fixed end.
  • a locking shaft is disposed at the lower end of the wrench 31a, and the printer body 1 is fixed inside.
  • a hook (not shown) that is engaged with the locking shaft of the lower end of the wrench 31a is provided.
  • the locking shaft is a movable end, and the locking hook is a fixed end.
  • the structure on the printer main body 1 that engages with the lock hook 321a of the lower end portion of the wrench 31a to realize the snap connection is not limited to the design of the above-described lock shaft 322a. It may also be a card slot structure (not shown) provided in the corresponding position of the printer body 1 in cooperation with the lock hook 321a. It will be understood that the engagement connection between the wrench 31a and the printer body 1 can be achieved as long as the needs of use can be met.
  • the present invention further includes an elastic member 4 having a pre-deformed and fixedly disposed between the wrench 31a and the upper cover 2 below the hinge point for implementing the wrench 31a and the printer body Locking between 1 to prevent vibration during printing causes loosening of the above-mentioned snap-fit relationship.
  • the elastic member 4 is a tension spring, and the tension spring is disposed between the wrench 31a on the hook head side and the upper cover body 2, and one end of the spring is attached to the wrench. 31a, the other end of which is mounted on the upper cover 2; when the upper cover 2 is closed relative to the printer main body 1, the pre-tension deformation of the tension spring is performed to obtain the wrench 31a and the The printer body 1 is securely fastened and fixed.
  • the elastic member 4 may also be selected according to the internal space of the printer main body 1.
  • a spring may be selected between the wrench 31a and the upper cover 2 disposed on the opposite side of the hook head; It may be a torsion spring.
  • the center of the torsion spring passes through the hinge shaft of the wrench 31a.
  • One end of the torsion spring is engaged with the upper cover body 2 above the hinge point, and the other end of the torsion spring is engaged with the hinge point of the wrench 31a.
  • the detailed structure and connection relationship of the compression spring or the torsion spring are not shown in the drawings.
  • the elastic member may also be a plastic elastic body such as elastic rubber, TPU, or the like, as long as it can be plastically deformed and can store a large amount of energy.
  • FIG. 4 is a schematic structural view of the cover member 3a according to Embodiment 1 of the present invention; FIG. D to the view.
  • the lock hooks 321a are symmetrically disposed on both sides of the wrench 31a. Of course, depending on the internal space of the actual printer main body 1, the lock hooks 321a may be disposed only on one side.
  • the wrench 31a is an upper and lower split structure and is fixedly connected by screws.
  • the upper cover 2 is provided with an hinge shaft 22a (the hinge shaft 22a is shown in FIG. 3).
  • the joint portion of the upper and lower split structures of the wrench 31a forms a hinge hole 6a adapted to the hinge shaft 22a of the upper cover 2.
  • FIG. 6 is a schematic view showing the state in which the upper cover 2 of the printer of the present invention is opened. At this time, the paper bin 7 inside the printer main body 1 is completely exposed, so that the user can replace the printing medium.
  • FIG. 7 the figure is a schematic structural view of the open cover member and related components in the first embodiment.
  • the positions and connection relationships of the main components such as the wrench 31a, the lock hook 321a, the lock shaft 322a, and the elastic member 4 are mirror images of the corresponding members shown in Fig. 3 in the front and rear directions.
  • Example 2 Referring to FIG. 8, the figure is a schematic structural view of the cover member 3b according to the embodiment.
  • the cover member 3b is composed of a wrench assembly 31b and a hook mechanism (not labeled), and the wrench assembly 31b includes a wrench 311b and a force transmission rod 312b.
  • the middle portion of the wrench 311b is hinged with the upper cover body 2
  • the middle portion of the force transmission rod 312b is hinged with the upper cover body 2 under the wrench 311b (based on the internal structure of the printer, the force transmission rod
  • the hinge point between the 312b and the upper cover 2 is not limited to the lower side of the wrench 311b, and may be higher than the hinge point between the wrench 311b and the upper cover 2 or at the same height thereof)
  • the upper end of the force transmitting rod 312b abuts the lower end of the wrench 311b;
  • the locking hook mechanism includes a locking hook 321b and a locking shaft 322b that is engaged with the locking hook 321b, wherein the locking A hook 321b is disposed at a lower end of the force receiving rod 312b, and
  • the relative positional relationship between the lock hook and the locking shaft that realizes the snap fit relationship may be interchanged, that is, a locking shaft is disposed at a lower end of the force transmission rod 312b, and the printer body 1 is inside.
  • a locking hook (not shown) that is engaged with the locking shaft of the lower end of the force transmission rod 312b is fixedly disposed. It is to be understood that the engagement connection between the force transmission lever 312b and the printer main body 1 can be achieved as long as the needs of use can be satisfied.
  • the embodiment further includes an elastic member 4 having a pre-deformed and fixedly disposed between the force-transmitting rod 312b below the hinge point and the upper cover body 2 for realizing the force transmission.
  • the locking between the rod 312b and the printer body 1 is used to loosen the engagement relationship described above.
  • the elastic member 4 of the embodiment is also provided with a tension spring which is disposed between the force transmitting rod 312b on the side of the locking hook head and the upper cover body 2, and one end of which is mounted at the same.
  • the other end of the force transmission rod 312b is mounted on the upper cover body 2; when the upper cover body 2 is closed relative to the printer main body 1, the pretensioning deformation of the tension spring is performed to obtain the transmission
  • the lever 312b is securely fastened to the printer body 1.
  • the upper cover body 2 is provided with an hinge shaft 22b, and the wrench 311b may be an upper and lower split structure and fixedly connected by screws, and the upper and lower parts of the wrench 311b are separated.
  • the joint portion forms a hinge hole 6b that is fitted to the hinge shaft 22b on the upper cover body 2.
  • the upper and lower portions of the wrench 311b are respectively fastened to the hinge shaft 22b, and then the wrench 311b and the hinge shaft 22b are fixedly connected by screws.
  • the opening process of the upper cover of the printer in this embodiment is: turning the wrench 311b (the arrow shown)
  • the lower end of the wrench 311b is rotated about the hinge shaft 22b (in the direction of the arrow B); then, the lower end of the wrench 311b pushes the upper end of the force transmission rod 312b, so that the lock hook 321b overcomes the elastic force of the elastic member 4,
  • the hinge point of the force transmitting rod 312b is rotated (in the direction of the arrow C), so that the locking hook 321b on the force transmitting rod 312b is disengaged from the locking shaft lib.
  • the grip 311b is continuously raised, and the upper cover 2 is completely opened with respect to the printer main body 1.
  • the wrench 31b can be pulled clockwise around the hinge shaft 22b to complete the operation of opening the cover.
  • FIG. 9 the structure of the cover member and related components in the second embodiment is reversed. schematic diagram. As shown in FIG. 9, the positions and connection relationships of the main components such as the wrench 311b, the lock hook 321b, the locking shaft lib, the force transmission rod 312b, and the elastic member 4 are the front and rear parts of the corresponding components shown in FIG. The mirroring of the direction.

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  • Accessory Devices And Overall Control Thereof (AREA)

Description

打印机 本申请要求于 2008 年 5 月 4 日提交中国专利局、 申请号为 200810094710.X, 发明名称为"打印机"的中国专利申请的优先权， 其全部 内容通过引用结合在本申请中。 技术领域
本发明涉及打印设备， 具体涉及一种打印机。 背景技术
使用卷式打印纸的打印机， 通常在打印机内部设置用于容纳打印纸卷 的纸仓。 当打印纸用完时， 操作者通过开启打印机的上盖开启机构打开上 盖， 完成更换打印纸卷。
如图 1所示， 该图是传统打印机的外部结构示意图。 图中所示， 打印 机上盖 100与打印机主体 300铰接， 打印机上盖 100可以相对于打印机主 体 300打开或闭合； 打印机上盖 100的内部设置锁紧轴 （图中未显示） ， 打印机主体 300的内部设置锁钩 （图中未显示） ； 开启扳手 200的一端与 所述锁钩连接且其另一端伸出打印机主体 300 外表面； 锁钩与锁紧轴卡 接， 这样， 上盖 100相对于打印主体 300锁紧闭合。 当需要开启打印机上 盖 100更换打印纸卷时， 操作者扳动开启扳手 200 , 锁钩同步转动且与锁 紧轴脱离， 打印机上盖 100处于非锁紧状态， 此时， 握住打印机上盖 100 继续旋转， 直至所述打印机上盖 100相对于打印机主体 300完全敞开。
上述传统打印机的开启机构存在操作不便的缺陷， 操作者扳动开启扳 手 200后， 所述打印机上盖 100相对于打印机主体 300只能开启一很小的 角度， 不能满足更换打印纸卷的需要， 操作者还需要进一步握住打印机上 盖 100边缘继续旋转， 才能使打印机上盖 100相对于打印机主体 300完全 敞开。 也就是说， 需要二次操作才能完成打印机上盖的开启。 发明内容
针对上述缺陷， 本发明解决的技术问题在于， 提供一种打印机， 它具 有结构简单、 操作方便快捷的打印机上盖开启机构。
本发明提供的打印机， 包括打印机主体和与打印机主体的后部铰接的 上盖体， 还包括开盖部件， 所述上盖体上壁的中部设置有开口， 所述开盖 部件的下端穿过所述上盖体上的开口且与所述打印机主体卡合连接； 所述 开盖部件的中部与所述上盖体铰接， 向上转动所述开盖部件实现其下端部 与所述打印机主体之间的卡合、 脱离。
优选地， 所述上盖体的上表面设置有内凹容纳部， 位于所述上盖体上 方的开盖部件与所述内凹容纳部相对且二者之间具有间隙。
所述上盖体上的所述内 IHJ容纳部与所述开口之间为非连通关系。
与所述开口相邻侧的所述内凹容纳部具有挡板。
优选地， 所述开盖部件由扳手和锁钩机构组成， 所述扳手的中部与所 述上盖体铰接， 所述锁钩机构包括锁钩和与所述锁钩卡合连接的锁紧轴， 其中， 所述锁钩设置在所述扳手的下端或打印机主体内， 所述锁紧轴设置 在所述打印机主体内或所述扳手的下端。
优选地， 还包括弹性部件， 所述弹性部件具有预变形且固定设置在铰 接点下方的所述扳手与所述上盖体之间， 用于实现所述扳手与所述打印机 主体之间的锁紧。
所述弹性部件为拉簧或扭簧。
优选地， 所述开盖部件由扳手组件和锁钩机构组成， 所述扳手组件包 括扳手和传力杆， 所述扳手的中部与所述上盖体铰接， 所述传力杆的中部 与上盖体铰接， 且所述传力杆的上端与所述扳手的下端相抵接； 所述锁钩 机构包括锁钩和与所述锁钩卡合连接的锁紧轴， 其中， 所述锁钩设置在所 述传力杆的下端或打印机主体内， 所述锁紧轴设置在所述打印机主体内或 所述传力杆的下端； 所述扳手的下端可推动所述传力杆的上端， 实现所述 传力杆下端的锁钩或锁紧轴与所述打印机主体内的锁紧轴或锁钩之间脱 离。
优选地， 还包括弹性部件， 所述弹性部件具有预变形且固定设置在铰 接点下方的所述传力杆与所述上盖体之间， 用于实现所述传力杆与所述打 印机主体之间的锁紧。
所述弹性部件为拉簧或扭簧。
本发明提供的打印机与现有技术相比， 本方案中所述开盖部件与所述 上盖体铰接， 且所述开盖部件的下端和所述打印机主体之间为卡合连接； 在需要更换打印纸卷等情景下， 操作者转动上盖体外侧的开盖部件， 所述 开盖部件的下端与所述打印机主体之间脱离， 此时， 继续拉动开盖部件进 而实现上盖体与打印机主体之间处于完全打开状态。 釆用本发明所述技术 方案，操作者通过一次操作即可完成上盖体的有效打开， 简化了开启步骤。
在本发明的优选实施例中， 所述上盖体上设置的内凹容纳部可以为使 用者提供操作空间， 同时， 内凹容纳部内设置的挡板将所述内凹容纳部分 隔为不连通的两个腔， 这样， 可防止经所述开盖部件端部落入的异物经开 口落入打印机主体的内部。
在本发明的另一优选实施例中， 所述弹性部件固定设置在铰接点下方 的所述开盖部件与所述打印机主体之间， 装配时， 弹性部件先进行预拉伸 或预压缩， 以保证所述开盖部件与所述打印机主体之间的卡合连接关系处 于卡紧状态。 附图说明
下面结合附图和具体实施方式对本发明作进一步详细的说明。
图 1是传统打印机的外部结构示意图；
图 2是本发明所述打印机的立体图；
图 3是图 2的 I - I剖视图；
图 4是本发明所述实施例 1中开盖部件 3a的结构示意图；
图 5是图 4的 D向视图；
图 6是本发明所述打印机上盖体 2的开启状态示意图；
图 7是实施例 1中所述开盖部件及相关部件反向设置的结构示意图； 图 8本发明所述实施例 2中开盖部件 3b的结构示意图；
图 9是实施例 2中所述开盖部件及相关部件反向设置的结构示意图。 图 2-图 9中：
1-打印机主体； 2-上盖体； 21-开口； 22a、 22b-铰接轴； 3a、 3b-开盖 部件； 31a-扳手; 321a, 321b-锁钩; 31b-扳手组件; 311b-扳手; 312b-传力 杆； 322a, 322b -锁紧轴; 4-弹性部件; 5-内凹容纳部; 51-挡板； 6a、 6b- 铰接孔； 7-纸仓。 具体实施方式
请参见图 2, 该图是本发明所述打印机的整体结构示意图。
如该图所示， 本发明主要包括打印机主体 1、 与打印机主体 1后部铰 接的上盖体 2和开盖部件 3 , 其中， 本发明所述打印机的打印头、 走纸胶 辊、 切刀以及驱动电机等主要部件的结构及连接关系与现有技术相同， 故 在此未予赘述。
本发明的设计要点在于所述开盖部件 3 , 同时结合打印机主体 1和上 盖体 2的结构设计， 向上转动开盖部件即可实现上盖体 2与打印机主体 1 之间处于完全打开状态。 下面通过两个实施例进行详细的描述。
实施例 1:
请参见图 3 , 该图是图 2的 I - I剖视图， 为了清楚的显示本发明技术 方案， 本图仅保留了与本发明相关的主要部件。 如图 3所示， 所述上盖体 2上壁的中部设置有开口 21 ,所述开盖部件 3a的下端穿过所述上盖体 2上 的开口 21且与所述打印机主体 1卡合连接； 所述开盖部件 3a的中部与所 述上盖体 2铰接。 向上转动所述上盖体 2上面的开盖部件 3a, 即， 所述开 盖部件 3a绕其中部的铰接点转动，以实现其下端部与所述打印机主体 1之 间的卡合、 脱离。
进一步地， 如图 2和图 3所示， 所述上盖体 2的上表面上设置有内凹 容纳部 5 , 位于所述上盖体 2上方的开盖部件 3a与所述内凹容纳部 5且二 者之间具有间隙 8。
需要说明的是，当所述上盖体 2上方的开盖部件 3a嵌入所述内 IHJ容纳 部 5时， 所述内凹容纳部 5可以为使用者提供操作空间， 当需要打开上盖 体 2时，使用者可通过所述开盖部件 3a与所述内凹容纳部 5之间的间隙 S 完成开盖操作。
为满足防尘的需求， 所述上盖体 2上的所述内凹容纳部 5与所述开口
21之间为非连通关系， 具体地， 与所述开口 21相邻侧的所述内凹容纳部 5 具有挡板 51。 这样， 可防止经所述开盖部件 3a端部落入的灰尘和异物经 开口 21落入打印机主体 1的内部。
实际上，所述上盖体 2上的所述内 IHJ容纳部 5与所述开口 21之间为非 连通关系的实现， 不局限于图中所述的直线型挡板结构， 也可以为弧状挡 板， 只要满足使用需要均可。 不再——阐述。
进一步地， 所述开盖部件 3a由扳手 31a和锁钩机构（图中未标记 )组 成，所述扳手 31a的中部与所述上盖体 2铰接，所述锁钩机构包括锁钩 321a 和与所述锁钩 321a卡合连接的锁紧轴 322a, 其中， 所述锁钩 321a设置在 所述扳手 31a的下端，所述锁紧轴 322a设置在所述打印机主体 1内。其中， 锁钩为活动端， 锁紧轴为固定端。
实际上， 上述实现卡合配合关系的锁钩和锁紧轴之间的相对位置关系 也可以互换， 也就是说， 在所述扳手 31a的下端设置锁紧轴， 所述打印机 主体 1内固定设置有与所述扳手 31a下端的锁紧轴卡合连接的锁钩（图中未 示出）。 其中， 锁紧轴为活动端， 锁钩为固定端。
当然，与所述扳手 31a的下端部的锁钩 321a相配合实现卡合连接的所 述打印机主体 1上的结构， 不局限于上述锁紧轴 322a的设计。 它也可以是 在所述打印机主体 1的相应位置上设置的与所述锁钩 321a相配合的卡槽结 构（图中未示出）。 可以理解地是， 只要能够满足使用需要， 实现扳手 31a 与所述打印机主体 1之间的卡合连接均可。
本发明还包括弹性部件 4 , 所述弹性部件 4具有预变形且固定设置在 铰接点下方的所述扳手 31a与所述上盖体 2之间， 用于实现所述扳手 31a 与所述打印机主体 1之间的锁紧， 以防止打印过程中产生振动而导致上述 卡合关系的松脱。
如图 3所示， 本实施例中， 所述弹性部件 4为拉簧， 该拉簧设置在所 述锁钩头侧的扳手 31a与上盖体 2之间， 其一端挂装在所述扳手 31a上， 其另一端挂装在所述上盖体 2上；当上盖体 2相对于打印机主体 1闭合时， 通过所述拉簧的预拉伸变形， 以获得所述扳手 31a与所述打印机主体 1之 间可靠的卡紧固定。
需要说明的是， 所述弹性部件 4也可根据打印机主体 1内部空间进行 选择， 比如说， 可以选择设置在所述锁钩头的相反侧的扳手 31a与上盖体 2之间压簧； 也可以是扭簧， 扭簧中心穿过所述扳手 31a的铰接轴， 扭簧 一端卡接在铰接点上方的上盖体 2的， 扭簧另一端卡接在扳手 31a铰接点 下方的上盖体 2上。 其中， 所述压簧或扭簧的详细结构及连接关系未在图 中示出。
当然， 所述弹性部件也可以是塑性弹性体， 诸如弹性橡胶、 TPU等， 只要是能够发生塑性变形并且可以储存较大能量的材质均可。
其中，本实施例所述开盖部件 3a的详细结构，请一并参见图 4和图 5 , 图 4是本发明所述实施例 1中开盖部件 3a的结构示意图；图 5是图 4的 D 向视图。
如图 4所示， 所述锁钩 321a对称设置在所述扳手 31a的两侧， 当然， 根据实际打印机主体 1的内部空间， 所述锁钩 321a可以仅在一侧设置。如 图 5所示， 所述扳手 31a是上、 下分体结构且通过螺钉固定连接， 所述上 盖体 2上设置有铰接轴 22a (该铰接轴 22a在图 3中示出），在所述扳手 31a 上下分体结构的接合部形成与所述上盖体 2上的铰接轴 22a相适配的铰接 孔 6a。
装配时， 先将所述扳手 31a上、 下两部分分别扣合在所述铰接轴 22a 上， 然后再用螺钉将所述扳手 31a和铰接轴 22a二者固定连接； 如此分体 结构设计， 具有零件加工方便， 装配工艺性好的优点。
下面接合图 3说明本实施例所述打印机上盖体 2的开启过程。 当需要 开启上盖体 2时， 逆时针向上扳动扳手 31a, 扳手 31a克服弹性部件 4的 拉力， 且绕铰接轴 22a转动， 所述扳手 31a下端的锁钩 321a与打印机主体 1上的锁紧轴 322a脱离， 此时， 握住扳手 31a, 继续向上扳动上盖体 2 , 即可实现上盖体 2相对于打印机主体 1完全敞开。
请参见图 6 , 该图是本发明所述打印机上盖体 2开启状态示意图。 这 时， 打印机主体 1内部的纸仓 7完全暴露出来， 便于用户更换打印介质。
另外， 也可以绕所述铰接轴 22a顺时针方向扳动扳手 31a完成上盖打 开的操作， 请参见图 7 , 该图为实施例 1 中所述开盖部件及相关部件反向 设置的结构示意图。 如图 7所示， 所述扳手 31a、 锁钩 321a、 锁紧轴 322a 及弹性部件 4等主要部件的位置及连接关系， 即为图 3中所示相应部件沿 前、 后方向的镜像设置。
实施例 2: 请参见图 8, 该图是本实施例所述开盖部件 3b的结构示意图。
本实施例与实施例 1的不同点在于， 所述开盖部件 3b由扳手组件 31b 和锁钩机构（图中未标记)组成， 所述扳手组件 31b包括扳手 311b和传力杆 312b, 所述扳手 311b的中部与所述上盖体 2铰接， 图中所示， 所述传力杆 312b的中部与所述扳手 311b下方的上盖体 2铰接（基于打印机的内部结 构，所述传力杆 312b与所述上盖体 2之间的铰接点不局限在所述扳手 311b 的下方，它可以高于所述扳手 311b与所述上盖体 2之间的铰接点或与其在 同一高度上 ), 且所述传力杆 312b的上端与所述扳手 311b的下端相抵接； 所述锁钩机构包括锁钩 321b和与所述锁钩 321b卡合连接的锁紧轴 322b, 其中， 所述锁钩 321b设置在所述传力杆 312b的下端， 所述锁紧轴 322b 的上端， 实现所述传力杆 312b下端的锁钩 321b与所述打印机主体 1内的 锁紧轴 322b之间脱离。
同样， 上述实现卡合配合关系的锁钩和锁紧轴之间的相对位置关系也 可以互换， 也就是说， 在所述传力杆 312b的下端设置锁紧轴， 所述打印机 主体 1 内固定设置有与所述传力杆 312b下端的锁紧轴卡合连接的锁钩（图 中未示出）。 可以理解地是， 只要能够满足使用需要， 实现传力杆 312b与 所述打印机主体 1之间的卡合连接均可。
另外， 本实施例还包括弹性部件 4, 所述弹性部件 4具有预变形且固 定设置在铰接点下方的所述传力杆 312b与所述上盖体 2之间，用于实现所 述传力杆 312b与所述打印机主体 1之间的锁紧，用于上述卡合关系发生松 脱。
如图 8所示， 本实施例所述弹性部件 4也釆用拉簧， 该拉簧设置在所 述锁钩头侧的传力杆 312b与上盖体 2之间，其一端挂装在所述传力杆 312b 上， 其另一端挂装在所述上盖体 2上； 当上盖体 2相对于打印机主体 1闭 合时，通过所述拉簧的预拉伸变形， 以获得所述传力杆 312b与所述打印机 主体 1之间可靠的卡紧固定。
进一步地， 所述上盖体 2上设置有铰接轴 22b, 所述扳手 311b可以是 上、 下分体结构并通过螺钉固定连接， 且在所述扳手 311b上下分体结构的 接合部形成与所述上盖体 2上的铰接轴 22b相适配的铰接孔 6b。
同样， 装配时， 先将所述扳手 311b上、 下两部分分别扣合在所述铰接 轴 22b上， 然后再用螺钉将扳手 311b和铰接轴 22b二者固定连接。
本实施例的其他组成与连接关系与实施例 1相同， 故不再赘述。
本实施例所述打印机上盖体的开启过程是： 转动扳手 311b (图示箭头
A方向）， 所述扳手 311b的下端绕铰接轴 22b转动 （图示箭头 B方向）； 接着，扳手 311b的下端头推动传力杆 312b的上端头，使得锁钩 321b克服 弹性部件 4的弹力，绕所述传力杆 312b的铰接点旋转（图示箭头 C方向 ), 这样， 传力杆 312b上的锁钩 321b与锁紧轴 lib脱离。 此时， 继续抬起扳 手 311b, 上盖体 2相对于打印机主体 1完全敞开。
同样地， 也可以绕所述铰接轴 22b顺时针方向扳动扳手 31b完成上盖 打开的操作， 请参见图 9, 该图为实施例 2中所述开盖部件及相关部件反 向设置的结构示意图。 如图 9所示， 所述扳手 311b、 锁钩 321b、 锁紧轴 lib, 传力杆 312b及弹性部件 4等主要部件的位置及连接关系， 即为图 8 中所示相应部件沿前、 后方向的镜像设置。
以上所述仅是本发明的优选实施方式， 应当指出， 对于本技术领域的 普通技术人员来说， 在不脱离本发明原理的前提下， 还可以做出若干改进 和润饰， 这些改进和润饰也应视为本发明的保护范围。

Claims

权 利 要 求
1、一种打印机，包括打印机主体和与打印机主体的后部铰接的上盖体， 其特征在于， 还包括开盖部件， 所述上盖体上壁的中部设置有开口， 所述 开盖部件的下端穿过所述上盖体上的开口且与所述打印机主体卡合连接； 所述开盖部件的中部与所述上盖体铰接， 向上转动所述开盖部件实现其下 端部与所述打印机主体之间的卡合、 脱离。
2、根据权利要求 1所述的打印机， 其特征在于， 所述上盖体的上表面 设置有内凹容纳部， 位于所述上盖体上方的开盖部件与所述内凹容纳部相 对且二者之间具有间隙。
3、根据权利要求 2所述的打印机， 其特征在于， 所述上盖体上的所述 内 IHJ容纳部与所述开口之间为非连通关系。
4、根据权利要求 3所述的打印机， 其特征在于， 与所述开口相邻侧的 所述内凹容纳部具有挡板。
5、 根据权利要求 1、 2、 3或 4所述的打印机， 其特征在于， 所述开盖 部件由扳手和锁钩机构组成，
所述扳手的中部与所述上盖体铰接，
所述锁钩机构包括锁钩和与所述锁钩卡合连接的锁紧轴， 其中， 所述 锁钩设置在所述扳手的下端或打印机主体内 , 所述锁紧轴设置在所述打印 机主体内或所述扳手的下端。
6、 根据权利要求 5所述的打印机， 其特征在于， 还包括弹性部件， 所 述弹性部件具有预变形且固定设置在铰接点下方的所述扳手与所述上盖体 之间， 用于实现所述扳手与所述打印机主体之间的锁紧。
7、根据权利要求 6所述的打印机， 其特征在于， 所述弹性部件为拉簧 或扭簧。
8、 根据权利要求 1、 2、 3或 4所述的打印机， 其特征在于， 所述开盖 部件由扳手组件和锁钩机构组成 ,
所述扳手组件包括扳手和传力杆，所述扳手的中部与所述上盖体铰接， 所述传力杆的中部与上盖体铰接， 且所述传力杆的上端与所述扳手的下端 相抵接； OP080946
- 10- 所述锁钩机构包括锁钩和与所述锁钩卡合连接的锁紧轴， 其中， 所述 锁钩设置在所述传力杆的下端或打印机主体内， 所述锁紧轴设置在所述打 印机主体内或所述传力杆的下端；
所述扳手的下端可推动所述传力杆的上端， 实现所述传力杆下端的锁 5 钩或锁紧轴与所述打印机主体内的锁紧轴或锁钩之间脱离。
9、 根据权利要求 8所述的打印机， 其特征在于， 还包括弹性部件， 所 述弹性部件具有预变形且固定设置在铰接点下方的所述传力杆与所述上盖 体之间， 用于实现所述传力杆与所述打印机主体之间的锁紧。
10、 根据权利要求 9所述的打印机， 其特征在于， 所述弹性部件为拉 10 簧或扭簧。
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CN101570086A (zh) 2009-11-04
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EP2284013A4 (en) 2013-04-03
US20110110699A1 (en) 2011-05-12

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