CN221678316U - Automatic ink filling system for ink cartridge - Google Patents
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- CN221678316U CN221678316U CN202420211560.0U CN202420211560U CN221678316U CN 221678316 U CN221678316 U CN 221678316U CN 202420211560 U CN202420211560 U CN 202420211560U CN 221678316 U CN221678316 U CN 221678316U
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Abstract
Description
技术领域Technical Field
本实用新型涉及墨盒技术领域，尤其涉及一种用于墨盒的自动加墨系统。The utility model relates to the technical field of ink cartridges, in particular to an automatic ink-filling system for ink cartridges.
背景技术Background Art
墨盒是喷墨打印机中用来存储打印墨水，并最终完成打印的重要部件。现有的原装墨盒是在墨盒内部装入墨囊，通过注墨机负压注墨方式将墨水注入墨囊中。由于使用墨囊作为填充物来稳固和衡压墨水，所以注墨量会有所限制，打印数量一般在200-600张覆盖5％的A4纸，注入多少墨水就只能使用多少墨水，所以造成打印量非常有限。企业或者用户在购买使用完墨盒内的墨水后，如果想自行加墨将非常困难，也无法达到理想的打印效果。The ink cartridge is an important part of the inkjet printer that is used to store printing ink and finally complete the printing. The existing original ink cartridge is to install an ink sac inside the ink cartridge, and the ink is injected into the ink sac by the negative pressure injection method of the ink injector. Since the ink sac is used as a filler to stabilize and balance the ink, the amount of ink injected is limited. The number of prints is generally 200-600 sheets covering 5% of A4 paper. The amount of ink injected can only be used as much as the amount of ink, so the printing volume is very limited. After the company or user purchases and uses the ink in the ink cartridge, it will be very difficult to add ink by themselves, and it will not be possible to achieve the ideal printing effect.
目前还有一些原装喷码墨盒，是在墨盒内加装墨囊，然后在墨囊内加设弹片，使墨囊内部负压吸住墨水，在使用的时候才会进行喷墨，但这种原装喷码墨盒没办法进行加墨，而一个原装喷码墨盒的价格较为昂贵，尤其是其中的喷码打印头，且在完成原装墨水的喷码后，其喷码打印头还是能继续正常使用，所以为了尽可能地提高墨盒的使用次数，降低生产成本，商家往往会在原装墨盒的基础上，增设自动加墨的装置。市面上常见的做法是直接在墨盒内部设置液位传感器，通过液位传感器实时监测墨囊内存墨水的液位高度，并控制外部水泵进行自动加墨，由于液位传感器检测的方位相对固定，实际使用时墨盒的放置方式并不相同，液位传感器容易出现感应偏差的问题，导致供墨的效果并不稳定；还可以在原装墨盒内部设置触点式传感器，即分别在盒体和墨囊上设置触点，通过触点接触、分离等状态控制水泵为墨盒进行供墨，但这种设计需要在墨盒内部进行改装，容易损坏墨盒的同时也增大了墨盒的使用成本，不符合降低成本的初衷。At present, there are some original inkjet ink cartridges, which are made by adding an ink sac to the ink cartridge, and then adding a shrapnel to the ink sac so that the negative pressure inside the ink sac absorbs the ink and the ink will be sprayed only when it is used. However, this kind of original inkjet ink cartridge cannot be refilled with ink, and the price of an original inkjet ink cartridge is relatively expensive, especially the inkjet print head therein. After the original ink is sprayed, the inkjet print head can still continue to be used normally. Therefore, in order to maximize the number of times the ink cartridge is used and reduce production costs, merchants often add an automatic ink-refilling device based on the original ink cartridge. A common practice on the market is to directly set a liquid level sensor inside the ink cartridge, monitor the liquid level height of the ink in the ink sac in real time through the liquid level sensor, and control the external water pump to automatically add ink. Since the detection position of the liquid level sensor is relatively fixed, the placement of the ink cartridge is different during actual use. The liquid level sensor is prone to sensing deviation, resulting in unstable ink supply. You can also set a contact sensor inside the original ink cartridge, that is, set contacts on the cartridge body and the ink sac respectively, and control the water pump to supply ink to the ink cartridge through the contact and separation states of the contact points. However, this design requires modification inside the ink cartridge, which is easy to damage the ink cartridge and increases the cost of using the ink cartridge, which is not in line with the original intention of reducing costs.
实用新型内容Utility Model Content
本实用新型所要解决的技术问题是克服现有技术的不足，提供了一种结构简单，有效根据墨盒内部墨水使用情况进行检测，并进行自动供应加墨，大大增加墨盒的使用次数，降低生产成本的一种用于墨盒的自动加墨系统。The technical problem to be solved by the utility model is to overcome the shortcomings of the prior art and provide an automatic ink filling system for ink cartridges which has a simple structure, can effectively detect the ink usage inside the ink cartridge, and automatically supply ink, thereby greatly increasing the number of times the ink cartridge is used and reducing the production cost.
本实用新型所采用的技术方案是：本实用新型包括墨盒，通过软管与所述墨盒相连通的储墨体，所述墨盒内设置有墨囊，所述墨盒与所述储墨体之间的所述软管上还设置有加墨装置，所述加墨装置包括壳体、设置在所述壳体上的开关控制器、与所述开关控制器电性连接的电源模块以及与所述电源模块电性连接的负压触发机构，所述开关控制器的进墨口与所述储墨体相连通、出墨口通过所述负压触发机构与所述墨囊相连通，所述负压触发机构与所述墨囊的内部压力相关联，并控制所述开关控制器的开闭状态。The technical solution adopted by the utility model is as follows: the utility model comprises an ink cartridge, an ink storage body connected to the ink cartridge through a hose, an ink sac is arranged in the ink cartridge, an ink adding device is also arranged on the hose between the ink cartridge and the ink storage body, the ink adding device comprises a shell, a switch controller arranged on the shell, a power module electrically connected to the switch controller and a negative pressure trigger mechanism electrically connected to the power module, an ink inlet of the switch controller is connected to the ink storage body, an ink outlet is connected to the ink sac through the negative pressure trigger mechanism, the negative pressure trigger mechanism is associated with the internal pressure of the ink sac, and controls the opening and closing state of the switch controller.
进一步地，所述负压触发机构包括负压袋和位移传感器，所述位移传感器包括固定设置在所述壳体上的控制电路、与所述控制电路固定连接的定片以及设置在所述负压袋顶部的动片，所述负压袋任意一端通过所述软管与所述墨囊相连通、另一端通过所述开关控制器与所述储墨体相连通，所述负压袋的初始气压与所述墨囊满墨时的气压一致，所述控制电路与所述电源模块和所述开关控制器相互电性连接。Furthermore, the negative pressure trigger mechanism includes a negative pressure bag and a displacement sensor, the displacement sensor includes a control circuit fixedly arranged on the shell, a fixed plate fixedly connected to the control circuit, and a movable plate arranged on the top of the negative pressure bag, either end of the negative pressure bag is connected to the ink sac through the hose, and the other end is connected to the ink storage body through the switch controller, the initial air pressure of the negative pressure bag is consistent with the air pressure when the ink sac is full of ink, and the control circuit is electrically connected to the power module and the switch controller.
进一步地，所述负压触发机构还可以包括负压袋和电磁开关，所述电磁开关包括与固定设置在所述壳体上的第二控制电路、与所述第二控制电路电性连接的电磁感应元件以及设置在所述负压袋顶部的磁铁，所述第二控制电路与所述电源模块和所述开关控制器相互电性连接。Furthermore, the negative pressure trigger mechanism may also include a negative pressure bag and an electromagnetic switch, the electromagnetic switch including a second control circuit fixedly arranged on the shell, an electromagnetic induction element electrically connected to the second control circuit, and a magnet arranged on the top of the negative pressure bag, and the second control circuit is electrically connected to the power module and the switch controller.
进一步地，所述负压触发机构还可以包括所述负压袋以及设置在所述负压袋内的负压感应控制器，所述负压感应控制器包括压力敏感元件以及与所述压力敏感元件电性连接的信号处理电路，所述信号处理电路与所述电源模块以及所述开关控制器电性连接。Furthermore, the negative pressure trigger mechanism may also include the negative pressure bag and a negative pressure sensing controller arranged in the negative pressure bag, the negative pressure sensing controller includes a pressure sensitive element and a signal processing circuit electrically connected to the pressure sensitive element, and the signal processing circuit is electrically connected to the power module and the switch controller.
进一步地，所述负压袋两侧对称设置有连接口，两侧所述连接口均密封连接有所述软管。Furthermore, connection ports are symmetrically arranged on both sides of the negative pressure bag, and the connection ports on both sides are sealedly connected to the hose.
进一步地，所述负压袋内置有弹性支撑件，所述弹性支撑件形状与所述负压袋初始气压状态下的内腔相一致。Furthermore, the negative pressure bag has an internal elastic support member, and the shape of the elastic support member is consistent with the inner cavity of the negative pressure bag under the initial air pressure state.
进一步地，所述壳体内还设置有电池盒，所述电池盒与所述电源模块电性连接。Furthermore, a battery box is provided in the shell, and the battery box is electrically connected to the power module.
最后，所述储墨体包括储墨盒、设置在所述储墨盒内的墨袋以及与所述储墨盒装配设置的保护盖，所述保护盖上还开设有挂放槽。Finally, the ink storage body includes an ink storage box, an ink bag arranged in the ink storage box, and a protective cover assembled with the ink storage box, and the protective cover is also provided with a hanging groove.
与现有技术相比，本实用新型的有益效果是：本实用新型通过设置在所述墨盒与所述储墨体之间的所述加墨装置，对所述墨盒内的墨量进行检测，并将储存在所述储墨体内的墨水补充至所述墨盒中，完成自动加墨；具体是通过与所述墨盒内部的所述墨囊相连通的所述负压袋，对所述墨囊内部的气压变化进行检测，随着所述墨盒内的墨水逐渐减少，所述墨囊内部的气压随之增大，所述负压触发机构与所述墨囊之间形成一个压力差，所述负压触发机构内部产生位移，触发所述控制电路向所述开关控制器发送信号，使得所述墨囊与所述储墨体之间的管路相连通，利用墨水自身的重力将墨水灌入至所述墨盒中，完成自动补墨。本实用新型无需对原装墨盒进行改装，因此，本实用新型简单，有效根据墨盒内部墨水使用情况进行检测，并进行自动供应加墨，大大增加墨盒的使用次数，降低生产成本。Compared with the prior art, the utility model has the following beneficial effects: the utility model detects the amount of ink in the ink cartridge through the ink adding device arranged between the ink cartridge and the ink storage body, and replenishes the ink stored in the ink storage body into the ink cartridge to complete automatic ink adding; specifically, the negative pressure bag connected to the ink sac inside the ink cartridge detects the air pressure change inside the ink sac, and as the ink in the ink cartridge gradually decreases, the air pressure inside the ink sac increases accordingly, a pressure difference is formed between the negative pressure trigger mechanism and the ink sac, displacement occurs inside the negative pressure trigger mechanism, triggering the control circuit to send a signal to the switch controller, so that the pipeline between the ink sac and the ink storage body is connected, and the ink is poured into the ink cartridge by the gravity of the ink itself to complete automatic ink filling. The utility model does not need to modify the original ink cartridge, so the utility model is simple, effectively detects according to the ink usage inside the ink cartridge, and automatically supplies ink, greatly increases the number of times the ink cartridge is used, and reduces production costs.
附图说明BRIEF DESCRIPTION OF THE DRAWINGS
图1是本实用新型的整体结构示意图；Figure 1 is a schematic diagram of the overall structure of the utility model;
图2是所述负压触发机构的结构示意图；FIG2 is a schematic structural diagram of the negative pressure trigger mechanism;
图3是所述储墨体的内部结构示意图。FIG. 3 is a schematic diagram of the internal structure of the ink storage body.
具体实施方式DETAILED DESCRIPTION
如图1、图2和图3所示，本实用新型包括墨盒1，通过软管2与所述墨盒1相连通的储墨体3，所述墨盒1内设置有墨囊，所述墨盒1与所述储墨体3之间的所述软管2上还设置有加墨装置，所述加墨装置包括壳体4、设置在所述壳体4上的开关控制器5、与所述开关控制器5电性连接的电源模块6以及与所述电源模块6电性连接的负压触发机构，所述开关控制器5的进墨口与所述储墨体3相连通、出墨口通过所述负压触发机构与所述墨囊相连通，所述负压触发机构与所述墨囊的内部压力相关联，并控制所述开关控制器5的开闭状态。As shown in Figures 1, 2 and 3, the utility model includes an ink cartridge 1, an ink storage body 3 connected to the ink cartridge 1 through a hose 2, an ink sac is arranged in the ink cartridge 1, and an ink adding device is also arranged on the hose 2 between the ink cartridge 1 and the ink storage body 3. The ink adding device includes a shell 4, a switch controller 5 arranged on the shell 4, a power module 6 electrically connected to the switch controller 5, and a negative pressure trigger mechanism electrically connected to the power module 6. The ink inlet of the switch controller 5 is connected to the ink storage body 3, and the ink outlet is connected to the ink sac through the negative pressure trigger mechanism. The negative pressure trigger mechanism is associated with the internal pressure of the ink sac and controls the opening and closing state of the switch controller 5.
在本实用新型中，所述负压触发机构包括负压袋7和位移传感器，所述位移传感器包括固定设置在所述壳体4上的控制电路8、与所述控制电路8固定连接的定片9以及设置在所述负压袋7顶部的动片10，所述负压袋7任意一端通过所述软管2与所述墨盒1相连通、另一端通过所述软管2与所述储墨体3相连通，所述负压袋7的初始气压与所述墨盒1满墨时的气压一致，所述控制电路8与所述电源模块6和所述开关控制器5相互电性连接。In the utility model, the negative pressure trigger mechanism includes a negative pressure bag 7 and a displacement sensor, the displacement sensor includes a control circuit 8 fixedly arranged on the shell 4, a fixed plate 9 fixedly connected to the control circuit 8, and a movable plate 10 arranged on the top of the negative pressure bag 7, one end of the negative pressure bag 7 is connected to the ink cartridge 1 through the hose 2, and the other end is connected to the ink storage body 3 through the hose 2, the initial air pressure of the negative pressure bag 7 is consistent with the air pressure when the ink cartridge 1 is full of ink, and the control circuit 8 is electrically connected to the power module 6 and the switch controller 5.
本实用新型通过设置在所述墨盒1与所述储墨体3之间的所述加墨装置，对所述墨盒1内的墨量进行检测，并将储存在所述储墨体3内的墨水补充至所述墨盒1中，完成自动加墨；具体是通过与所述墨囊相连通的所述负压袋7检测所述墨盒1内部的气压变化，当所述墨盒1处于满墨状态时，所述墨囊内部的气压值为0.01mpa，当墨水被喷出使用逐渐减少时，所述墨囊内的压力随之增大，所述负压袋7被压缩，设置在所述负压袋7顶部的所述动片10向下移动，当所述墨囊内部墨水被完全用完时，所述墨囊内部气压值增至0.1mpa，此时所述动片10与所述定片9相接触，触发所述控制电路8向所述开关控制器5发送信号，所述储墨体3与所述墨盒1之间的管路被接通，利用所述储墨体3内部墨水自身的重力作用，将所述储墨体3内的墨水灌进所述墨盒1中，完成补充后，所述负压袋7内部的气压恢复，所述动片10与所述定片9分离，所述开关控制器5重新关闭；在后续使用过程中，不断重复上述过程完成自动加墨的功能。The utility model detects the amount of ink in the ink cartridge 1 through the ink adding device arranged between the ink cartridge 1 and the ink storage body 3, and replenishes the ink stored in the ink storage body 3 into the ink cartridge 1, thereby completing automatic ink adding; specifically, the negative pressure bag 7 connected to the ink sac detects the air pressure change inside the ink cartridge 1. When the ink cartridge 1 is in a full ink state, the air pressure value inside the ink sac is 0.01 MPa. When the ink is ejected and the use gradually decreases, the pressure in the ink sac increases accordingly, the negative pressure bag 7 is compressed, and the moving plate 10 arranged on the top of the negative pressure bag 7 moves downward. When the negative pressure bag 7 is pressed, the moving plate 10 ... When the ink inside the ink bag is completely used up, the air pressure inside the ink bag increases to 0.1 MPa. At this time, the movable plate 10 is in contact with the fixed plate 9, triggering the control circuit 8 to send a signal to the switch controller 5, and the pipeline between the ink storage body 3 and the ink cartridge 1 is connected. The ink in the ink storage body 3 is poured into the ink cartridge 1 by utilizing the gravity of the ink inside the ink storage body 3. After the replenishment is completed, the air pressure inside the negative pressure bag 7 is restored, the movable plate 10 is separated from the fixed plate 9, and the switch controller 5 is closed again; in the subsequent use process, the above process is repeated continuously to complete the function of automatic ink addition.
所述负压袋7两侧对称设置有连接口11，两侧所述连接口11均密封连接有所述软管2。所述负压袋7内置有弹性支撑件12，所述弹性支撑件12形状与所述负压袋7初始气压状态下的内腔相一致。所述弹性支撑件12采用海绵材质。初始状态下，所述墨盒1内部的气压值由储墨量决定，根据所述墨盒1内部的气压值调整所述负压袋7内部的气压值，此时所述负压袋7处于膨胀状态；当所述墨盒1内部的墨水喷完后，所述负压袋7内部气压值随之变小，所述负压袋7内外形成气压差被挤压收缩，带动所述动片10下移至于所述定片9相接触；完成加墨后，所述墨盒1内部的气压恢复，所述负压袋7也随之膨胀至恢复原状，所述弹性支撑件12用于帮助所述负压袋7恢复。The negative pressure bag 7 is symmetrically provided with connection ports 11 on both sides, and the connection ports 11 on both sides are sealed and connected to the hose 2. The negative pressure bag 7 is built with an elastic support member 12, and the shape of the elastic support member 12 is consistent with the inner cavity of the negative pressure bag 7 under the initial air pressure state. The elastic support member 12 is made of sponge material. In the initial state, the air pressure value inside the ink cartridge 1 is determined by the ink storage amount, and the air pressure value inside the negative pressure bag 7 is adjusted according to the air pressure value inside the ink cartridge 1. At this time, the negative pressure bag 7 is in an expanded state; when the ink inside the ink cartridge 1 is sprayed, the air pressure value inside the negative pressure bag 7 becomes smaller, and the air pressure difference between the inside and outside of the negative pressure bag 7 is squeezed and contracted, driving the movable plate 10 to move down to contact the fixed plate 9; after the ink is added, the air pressure inside the ink cartridge 1 is restored, and the negative pressure bag 7 also expands to restore its original state, and the elastic support member 12 is used to help the negative pressure bag 7 recover.
在本实用新型中，所述壳体4内还设置有电池盒13，所述电池盒13与所述电源模块6电性连接。所述储墨体3包括储墨盒14、设置在所述储墨盒14内的墨袋15以及与所述储墨盒14装配设置的保护盖16，所述保护盖16上还开设有挂放槽17。在本实施例中，在所述壳体4内还设置有与所述电源模块6电性连接的电源插口，所述电源插口与外部电源相连接；在所述壳体4外部可拆卸式安装有电池包，所述电池包通过插头与所述电源插口相连接，所述电源插口与所述插头采用TYPE-C接口。In the utility model, a battery box 13 is also provided in the housing 4, and the battery box 13 is electrically connected to the power module 6. The ink storage body 3 includes an ink storage box 14, an ink bag 15 provided in the ink storage box 14, and a protective cover 16 assembled with the ink storage box 14, and a hanging groove 17 is also provided on the protective cover 16. In this embodiment, a power socket electrically connected to the power module 6 is also provided in the housing 4, and the power socket is connected to an external power source; a battery pack is detachably installed outside the housing 4, and the battery pack is connected to the power socket through a plug, and the power socket and the plug adopt a TYPE-C interface.
在本实用新型中，还可以将所述位移传感器替换成电磁开关或负压感应控制器，所述电磁开关包括与固定设置在所述壳体4上的第二控制电路、与所述第二控制电路电性连接的电磁感应元件以及设置在所述负压袋7顶部的磁铁，所述负压袋7任意一端通过所述软管2与所述墨囊相连通、另一端通过所述开关控制器5与所述储墨体3相连通，所述负压袋7的初始气压与所述墨囊满墨时的气压一致，所述第二控制电路与所述电源模块6和所述开关控制器5相互电性连接，使用电磁开关替代位移传感器的好处是可以精确监测所述负压袋7收缩时的位移量，并且与触点式位移传感器不同，所述电磁开关中的磁铁与电磁感应元件可设置在一定范围内触发，这样，当所述负压袋7内部气压逐渐恢复，使得所述负压袋7膨胀过程中，磁铁与电磁感应元件分离也不会立即触发所述开关控制器5，保证了所述负压袋7的恢复位移量。所述负压感应控制器包括压力敏感元件以及与所述压力敏感元件电性连接的信号处理电路，所述信号处理电路与所述电源模块6以及所述开关控制器5电性连接，将所述压力敏感元件以及所述信号处理电路设置在所述负压袋7中，与传统设置在所述墨盒1内部的做法不同，所述压力敏感元件用于检测所述负压袋7内的压力变化，并通过所述电信号处理模块将压力变化信号转化为电信号，通过所述电源模块6触发所述开关控制器5进行工作，控制所述墨盒1与所述储墨体3之间的管路通断，在本实用新型中，所述压力敏感元件可采用扩散硅胶压力芯片，当所述负压袋7内部压力发生变化时，压力作用在不锈钢隔离膜片上，通过隔离硅油传递到所述信号处理电路中引起电桥输出电压变化。In the present utility model, the displacement sensor can also be replaced by an electromagnetic switch or a negative pressure sensing controller. The electromagnetic switch includes a second control circuit fixedly arranged on the shell 4, an electromagnetic induction element electrically connected to the second control circuit, and a magnet arranged on the top of the negative pressure bag 7. Any end of the negative pressure bag 7 is connected to the ink bag through the hose 2, and the other end is connected to the ink storage body 3 through the switch controller 5. The initial air pressure of the negative pressure bag 7 is consistent with the air pressure when the ink bag is full of ink. The second control circuit is electrically connected to the power module 6 and the switch controller 5. The advantage of using an electromagnetic switch instead of a displacement sensor is that the displacement of the negative pressure bag 7 during contraction can be accurately monitored. Unlike a contact-type displacement sensor, the magnet and the electromagnetic induction element in the electromagnetic switch can be set to be triggered within a certain range. In this way, when the air pressure inside the negative pressure bag 7 gradually recovers, the magnet and the electromagnetic induction element are separated during the expansion of the negative pressure bag 7 and the switch controller 5 will not immediately trigger the negative pressure bag 7. The recovery displacement of the negative pressure bag 7 is ensured. The negative pressure sensing controller includes a pressure sensitive element and a signal processing circuit electrically connected to the pressure sensitive element. The signal processing circuit is electrically connected to the power module 6 and the switch controller 5. The pressure sensitive element and the signal processing circuit are arranged in the negative pressure bag 7. Different from the traditional practice of arranging them inside the ink cartridge 1, the pressure sensitive element is used to detect the pressure change in the negative pressure bag 7, and convert the pressure change signal into an electrical signal through the electrical signal processing module, and trigger the switch controller 5 to work through the power module 6 to control the on-off of the pipeline between the ink cartridge 1 and the ink storage body 3. In the utility model, the pressure sensitive element can adopt a diffused silica gel pressure chip. When the internal pressure of the negative pressure bag 7 changes, the pressure acts on the stainless steel isolation diaphragm, and is transmitted to the signal processing circuit through the isolation silicone oil, causing the bridge output voltage to change.
在本实用新型中，所述开关控制器5可采用开关控制器或常开阀门。所述弹性支撑件12采用与所述负压袋7初始状态下内腔形状相一致的墨囊。使用本实用新型时，所述储墨体3必须放置在水平高度高于所述墨盒1的位置上，有利于所述储墨体3内的墨水流入所述墨盒1内；所述负压袋7的体积设置为所述墨盒1内墨囊的一半，这样可以将所述负压袋7的位移量控制在4mm之内，适配所述位移传感器和所述电磁开关的位移量。In the present invention, the switch controller 5 can be a switch controller or a normally open valve. The elastic support member 12 uses an ink bag that is consistent with the inner cavity shape of the negative pressure bag 7 in the initial state. When using the present invention, the ink storage body 3 must be placed at a level higher than the ink cartridge 1, which is conducive to the ink in the ink storage body 3 flowing into the ink cartridge 1; the volume of the negative pressure bag 7 is set to half of the ink bag in the ink cartridge 1, so that the displacement of the negative pressure bag 7 can be controlled within 4mm, which is suitable for the displacement of the displacement sensor and the electromagnetic switch.
最后需要强调的是，以上所述仅为本实用新型的优选实施例，并不用于限制本实用新型，对于本领域的技术人员来说，本实用新型可以有各种变化和更改，凡在本实用新型的精神和原则之内，所做的任何修改、等同替换、改进等，均应包含在本实用新型的保护范围之内。Finally, it should be emphasized that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various changes and modifications. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.
Claims (8)
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