Casing assembly and printer

Abstract

The invention discloses a machine shell assembly and a printer, and belongs to the technical field of printers. The shell assembly comprises a carrier and an uncovering key, the carrier is a printer body or an upper cover of the printer, the uncovering key is rotationally connected to the carrier so as to be switched between an unlocking state and a locking state, the upper cover can be unlocked from the printer body under the condition that the uncovering key is in the unlocking state, and the upper cover can be locked with the printer body under the condition that the uncovering key is in the locking state; the carrier is connected with an abutting portion, the abutting portion is located on a rotating path of the uncovering key which is switched from the unlocking state to the locking state, and the abutting portion is used for abutting against and limiting the matching end of the uncovering key and used for enabling the first connecting portion on the uncovering key to be matched with the corresponding second connecting portion correspondingly to lock the upper cover and the machine body in the covering process of the printer. The abutting part is arranged to be matched with the matching end, the relative position of the uncovering key and the carrier is stabilized, and it is guaranteed that the covering process of the upper cover and the machine body is smooth and not blocked.

Description

Technical Field

[0001] This application relates to the field of printer technology, and more particularly to a housing assembly and a printer. Background Technology

[0002] A printer is a computer peripheral device that outputs electronic documents or images to paper or other media. It receives digital signals from a computer, mobile phone, or other device and uses printing technology to "print" physical copies of text, graphics, or photographs. There are various types of printers, such as line marker printers, label printers, and invoice printers.

[0003] In related technologies, the printer's top cover and body are connected via a snap-fit ​​button for a convenient opening and closing experience. However, during use, it was found that a jamming issue occurs when the top cover and body are engaged, affecting the normal connection between them. Summary of the Invention

[0004] The purpose of this application is to provide a housing assembly and printer that solves the technical problem of connection jamming when the printer body and top cover are connected in the prior art.

[0005] This application is implemented as follows: In a first aspect, embodiments of this application provide a housing assembly for a printer. The housing assembly includes a carrier and a cover opening button. The carrier is the printer body or top cover. The cover opening button is rotatably connected to the carrier so as to be able to switch between an unlocked state and a locked state. When the cover opening button is in the unlocked state, the top cover can be unlocked from the printer body. When the cover opening button is in the locked state, the top cover can be locked from the printer body. The carrier is connected to a stop part, which is located on the rotation path of the cover opening button when switching from the unlocked state to the locked state. The stop part is used to stop and limit the mating end of the cover opening button so that during the printer's cover closing process, the first connecting part on the cover opening button can be correspondingly engaged with the corresponding second connecting part to lock the top cover and the printer body.

[0006] Secondly, embodiments of this application provide a printer, including the housing assembly provided in the first aspect embodiment.

[0007] The technical solution provided in this application can achieve the following beneficial effects: In this application, the cover opening button is rotatably connected to a carrier, which is the printer body or top cover. The cover opening button is provided with a first connecting part, which can cooperate with a second connecting part provided on the body or top cover that is not connected to the cover opening button, thereby locking the body and top cover. This application stabilizes the relative position of the cover opening button and the carrier by setting a stop part to limit the cooperation between the mating end of the cover opening button. During the process of closing the printer cover, that is, when the top cover rotates to the surface of the body, the first connecting part and the second connecting part can correspond, so that the top cover and the body can be locked smoothly, improving the smoothness of opening and closing the cover and avoiding the situation where the position of the cover opening button is unstable during the closing process, causing the first connecting part to fail to correspond with the second connecting part, resulting in the cover closing jamming. Attached Figure Description

[0008] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0009] Figure 1 This is a schematic diagram of the overall structure of the housing assembly from a first-view perspective provided in some embodiments of this application; Figure 2 This application is about Figure 1 Detailed view of point A; Figure 3 This application is about Figure 1 BB cross-sectional view; Figure 4 This application is about Figure 3 Details at point C Figure 1 ; Figure 5 This application is about Figure 3 Details at point C Figure 2 ; Figure 6 This application is about Figure 3 Details at point C Figure 3 ; Figure 7 This is a schematic diagram of the overall structure of the housing assembly from a second perspective, provided in some embodiments of this application; Figure 8 This application is about Figure 7 Detailed image of point D; Figure 9 This is a schematic diagram of the structure of the lid opening key provided in some embodiments of this application; Figure 10 This is a schematic diagram of the structure of the cover provided in some embodiments of this application; Figure 11 This application is about Figure 10 Detailed image of point E; Figure 12 This is a schematic diagram of the overall structure of the printer provided in some embodiments of this application; Figure 13 This application is about Figure 12 Detailed image of point F.

[0010] In the diagram: 100 - Opening button, 110 - Limiting protrusion, 120 - Rotating part, 130 - Deformation notch, 140 - First fixing part, 150 - Operating end, 160 - Mating end, 170 - First connecting part, 200 - Stopping part, 210 - Snap-fit ​​notch, 220 - Support unit, 300 - Elastic element, 400 - Top cover, 410 - Stopping part, 420 - Bending part, 430 - Second fixing part, 440 - Mounting groove, 500 - Body, 510 - Second connecting part, 511 - Snap-fit ​​hole, 512 - Guide surface. Detailed Implementation

[0011] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments in this application, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0012] In the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0013] In related technologies, during the process of closing the printer cover, the cover may get stuck and jammed with the printer body, preventing the cover from closing properly. Operators usually need to adjust the position of the cover opening button to allow the cover to close properly.

[0014] The inventors discovered that in existing printers, the cover opening button is typically mounted on the printer cover and has a latch. A locking hole is located on the printer body. When closing the printer cover, the cover is rotated towards the printer body, and the latch engages with the locking hole. The edge of the locking hole has a guide surface 512, which allows the latch to be aligned even if it doesn't align properly. However, due to manufacturing and assembly errors, in some products, the latch doesn't align with the locking hole or the guide surface 512, instead pressing directly against other parts of the printer body, causing jamming between the cover and the body.

[0015] In view of this, embodiments of this application provide a housing assembly applied to a printer. See also... Figures 1 to 8 As shown, the housing assembly includes a carrier and a cover opening button 100. The carrier is either the printer body 500 or the top cover 400. The cover opening button 100 is rotatably connected to the carrier, allowing it to switch between an unlocked and locked state. The cover opening button 100 can be selectively connected to either the printer body 500 or the top cover 400. Both the top cover 400 and the printer body 500 are parts of the printer, and the top cover 400 is rotatably connected to the printer body 500. (See reference...) Figure 12 As shown, by rotating the top cover 400, the top cover 400 can cover the body 500 to shield the body 500 and form a consumable storage space for the printer, or the top cover 400 can be removed from the body 500 to operate the body 500, such as installing or releasing consumables.

[0016] With the lid release button 100 in the unlocked state, the top cover 400 can be unlocked from the body 500, and the top cover 400 can rotate relative to the body 500 for easy operation of the body 500. With the lid release button 100 in the locked state, the top cover 400 can be locked to the body 500, and the two remain in a stable position.

[0017] The carrier is connected to a stop part 200, which is located on the rotation path of the cover opening button 100 when it switches from the unlocked state to the locked state. (See reference.) Figure 3 and Figure 4 As shown, the stop part 200 is used to stop and limit the mating end 160 of the cover opening key 100, so that during the process of closing the cover of the printer, the first connecting part 170 on the cover opening key 100 can be mated with the corresponding second connecting part 510 to lock the cover 400 and the body 500.

[0018] It is understood that the lid opening button 100 is connected to either the top cover 400 or the body 500, and the lid opening button 100 is provided with a first connecting part 170. The second connecting part 510 corresponds to the first connecting part 170. Therefore, the second connecting part 510 must be provided on either the top cover 400 or the body 500 where the lid opening button 100 is not connected, thereby achieving locking between the top cover 400 and the body 500. That is, when the lid opening button 100 is provided on the body 500, the second connecting part 510 is provided on the top cover 400; and vice versa. The first connecting part 170 can cooperate with the second connecting part 510 to achieve locking between the top cover 400 and the body 500.

[0019] Because the stop part 200 limits the position of the cover opening button 100, the position of the cover opening button 100 is stabilized. This ensures that the first connecting part 170 and the second connecting part 510 can correspond to each other during the printer's cover closing process, allowing the top cover 400 and the body 500 to lock smoothly. This improves the smoothness of opening and closing the cover and avoids situations where the unstable position of the cover opening button 100 causes the first connecting part 170 and the second connecting part 510 to misalign, resulting in jamming during cover closing. The operator does not need to pay special attention to the position of the cover opening button 100 or additionally align the first connecting part 170 and the second connecting part 510 during the cover closing process, thus optimizing the cover opening and closing experience.

[0020] The first connecting portion 170 and the second connecting portion 510 can be a mutually locking structure; in some embodiments, they can be a magnetically engaging structure. The magnetic engagement between the first connecting portion 170 and the second connecting portion 510 locks the top cover 400 and the body 500. Rotating the opening button 100 changes the position of the first connecting portion 170, disconnecting the connection between the first connecting portion 170 and the second connecting portion 510, allowing the top cover 400 and the body 500 to separate smoothly.

[0021] In other embodiments, the first connecting portion 170 may be configured as a hook structure, as can be referred to Figures 4 to 6 As shown. The second connecting part 510 can be a snap-fit ​​hole 511 provided on the body 500, as can be seen in the reference. Figure 12 and Figure 13 As shown. By aligning the hook with the snap-fit ​​hole 511, the hook is successfully installed into the snap-fit ​​hole 511.

[0022] For example, after the hook is fitted into the latching hole 511, the cover opening key 100 can be further driven to rotate, so that the hook is in a locked state, completing the locking of the top cover 400 and the body 500. For example, the second connecting part 510 may also include a guide surface 512 located at the edge of the latching hole 511, see reference. Figure 13As shown, the hook aligns with the guide surface 512. After the hook contacts the guide surface 512, it is guided by the guide surface 512 to slide into the locking hole 511. Before the hook contacts the guide surface 512, the cover opening button 100 and the stop part 200 are in a limiting engagement, and the cover opening button 100 is in a locked state. After the hook contacts the guide surface 512, the cover opening button 100 slides towards the unlocked state under the guidance of the guide surface 512, so that the hook can smoothly slide into the locking hole 511. After the hook separates from the guide surface 512, the guiding effect of the guide surface 512 on the hook is released, and the cover opening button 100 rotates back to the locked state, realizing the locking between the top cover 400 and the body 500. By using the stop portion 200 to limit the opening button 100, the length of the guide surface 512 can be reduced. Compared with existing printer products, the guide surface 512 in the product provided in this application embodiment can be set to be shorter, so as to avoid the guide surface 512 being too long and affecting other structural settings on the machine body 500.

[0023] refer to Figure 4 As shown, when the lid opening key 100 is in the locked state, the mating end 160 of the lid opening key 100 is in a limiting engagement with the stop part 200, and the position of the lid opening key 100 is stable, ensuring the stable correspondence between the first connecting part 170 and the second connecting part 510. Figure 4 In the middle, the direction of the dashed arrow indicates the rotation direction of the cover release button 100 when switching from the locked state to the unlocked state.

[0024] In some preferred embodiments of this application, reference may be made to Figure 4 As shown, the stop portion 200 and the mating end 160 are in surface contact. It can be understood that surface contact means that a portion of the surface of the stop portion 200 and a portion of the surface of the mating end 160 are in contact with each other, increasing the contact area between them. The contact area between the stop portion 200 and the mating end 160 is maximized to reduce the force per unit area on the capping key 100, preventing stress concentration and structural damage. Simultaneously, the surface contact between the stop portion 200 and the mating end 160 enhances the limiting effect of the stop portion 200 on the capping key 100, further ensuring the positional stability of the capping key 100.

[0025] In some preferred embodiments of this application, reference may be made to Figure 10 and Figure 11As shown, the stop portion 200 includes at least two support units 220, all of which are distributed along the extension direction of the rotation axis of the cover key 100. On the one hand, by forming the stop portion 200 with multiple support units 220, the distribution area of ​​the stop portion 200 is expanded, thereby improving the limiting effect on the cover key 100. On the other hand, since the stop portion 200 is formed by multiple support units 220, the risk of shrinkage of the support units 220 can be reduced during the injection molding process of the carrier, and the dimensional error of the stop portion 200 can be reduced, thereby improving the limiting effect on the cover key 100 to a certain extent.

[0026] In some embodiments, the carrier has a bent portion 420, as shown in the reference. Figures 4 to 6 As shown, a portion of the stop portion 200 is connected to the bend portion 420. The connection between the stop portion 200 and the bend portion 420 improves the overall structural strength of both, reducing the risk of damage to the stop portion 200 and the carrier structure. Furthermore, the high strength and stable connection between the stop portion 200 and the carrier effectively reduce the risk of structural damage to the stop portion 200 when the cover key 100 and the stop portion 200 are in a limiting engagement.

[0027] In some embodiments provided in this application, reference is made to Figure 4 and Figure 5 As shown, the carrier is provided with a stop 410, which is located on the rotation path of the cover opening key 100. The surface of the cover opening key 100 is provided with a limiting protrusion 110. During the rotation process of the cover opening key 100 from the locked state to the unlocked state, the stop 410 can engage with the contact position between the limiting protrusion 110 and the surface of the cover opening key 100, so as to limit the engagement with the cover opening key 100 and the limiting protrusion 110.

[0028] Figure 4 In the middle, the lid opening button 100 is in the locked state. Figure 5 In the middle, the lid opening button 100 is in the unlocked state. Figure 4 The cover release key 100 rotates along the direction of the dotted arrow to switch to the locked state. After rotation, the position of the cover release key 100 relative to the carrier changes, and the stop portion 410 can engage with the surface of the cover release key 100 without the limiting protrusion 110 to prevent the cover release key 100 from continuing to rotate. When the cover release key 100 is subjected to a large driving force, even if the stop portion 410 engages with the surface of the cover release key 100, relative sliding can easily occur between the surface of the cover release key 100 and the stop portion 410, causing damage to the rotational connection structure between the cover release key 100 and the carrier. To address this, this embodiment also provides a limiting protrusion 110 to prevent relative sliding between the stop portion 410 and the cover release key 100, further limiting the relative position of the stop portion 410 and the cover release key 100.

[0029] In some preferred embodiments, reference may be made to Figure 9 As shown, the cover opening key 100 has two relatively distributed rotating parts 120, and the cover opening key 100 is rotatably connected to the carrier through the two rotating parts 120. Along the extension direction of the rotation axis of the cover opening key 100, the limiting protrusion 110 extends from one end of the cover opening key 100 to the other end, so that the limiting protrusion 110 covers as much of the cover opening key 100 as possible in the extension direction of the rotation axis of the cover opening key 100, thereby improving the limiting effect between the limiting protrusion 110 and the stop part 410, and at the same time, it can also prevent the cover opening key 100 from being subjected to force in a part area, which would cause the cover opening key 100 to be unbalanced and shift in position.

[0030] In the embodiments provided in this application, the cover-opening key 100 has a mating end 160 and an operating end 150 disposed opposite to each other. The mating end 160 is the end of the cover-opening key 100 that is limited to the stop portion 200, and the operating end 150 is the end that is driven by an external force. The operating end 150 and the mating end 160 are respectively located on both sides of the rotation axis of the cover-opening key 100. When the operating end 150 is driven by an external force, the cover-opening key 100 can rotate relative to the carrier, so that the cover-opening key 100 switches between an unlocked state and a locked state.

[0031] In some specific implementation methods, reference may be made to Figure 9 As shown, the cover-opening key 100 is provided with a deformation notch 130, which is located between the operating end 150 and the mating end 160. The deformation notch 130 reduces the structural strength of the cover-opening key 100. During the rotation of the cover-opening key 100, after the mating end 160 makes a limiting contact with the stop part 200, the operating end 150 on the other side of the deformation notch 130 can deform appropriately relative to the mating end 160 under the action of external force to provide appropriate buffering and reduce the risk of structural damage to the cover-opening key 100.

[0032] Meanwhile, with the carrier having a stop portion 410 and the cover opening key 100 having a limiting protrusion 110 on its surface, the presence of the deformation notch 130 makes it easier for the operating end 150 to deform relative to the mating end 160, making the operating end 150 easier to deform and the limiting protrusion 110 easier to limit the mating of the stop portion 410, thus improving the limiting mating effect between the limiting protrusion 110 and the stop portion 410.

[0033] In other embodiments, the deformation notch 130 of the cover-opening key 100 is located on the rotation axis of the cover-opening key 100, meaning that the cover-opening key 100 is prone to deformation when subjected to an external force along its rotation axis. The connection between the cover-opening key 100 and the carrier is generally a snap-fit. When assembling the cover-opening key 100 to the carrier, the deformation notch 130 makes the cover-opening key 100 more easily deformable, making it easier to assemble onto the carrier. This reduces the assembly difficulty of the cover-opening key 100 and increases its ease of assembly.

[0034] In some embodiments provided in this application, reference may be made to Figures 4 to 6 As shown, the stop portion 200 is provided with a locking notch 210. During the rotation of the cover release button 100 from the unlocked state to the locked state, the mating end 160 presses against the stop portion 200 and engages with the locking notch 210. (Refer to...) Figure 6 As shown, the mating end 160 can engage with the snap-fit ​​notch 210 to limit the opening button 100 in a locked state.

[0035] After the mating end 160 and the stop part 200 are engaged, the cover opening key 100 can rotate further. The mating end 160 presses against the stop part 200, and the interference between the mating end 160 and the stop part 200 causes deformation, allowing the mating end 160 to engage in the locking notch 210. After the external force is removed, the mating end 160 cannot automatically press against the stop part 200 and withdraw from the locking notch 210, thus maintaining the relative position stability of the mating end 160 and the stop part 200, and the cover opening key 100 is constrained in the locked state.

[0036] It is understandable that the locked state means that when the cover release button 100 is in the locked state, the top cover 400 and the body 500 are locked together and cannot be separated. Therefore, the locked state can correspond to multiple positions of the cover release button 100. When the mating end 160 is in a limiting engagement with the stop part 200, the cover release button 100 is in the locked state. When the mating end 160 is engaged with the locking notch 210, the cover release button 100 is also in the locked state.

[0037] Because the mating end 160 deforms when it engages with the locking notch 210, the operator can clearly feel the difference in operation during the process, making it easier for the operator to determine whether the cover opening button 100 has been rotated to the correct position. At the same time, as the mating end 160 passes the stop part 200 and enters the locking notch 210, a distinct sound will be produced, which can indicate to the user that the lock has been engaged in a further locking state.

[0038] In some specific embodiments, an elastic element 300 connects the cover opening button 100 and the carrier. The elastic element 300 drives the cover opening button 100 from the unlocked state to the locked state and drives the mating end 160 to rotate into the locking notch 210. The force exerted by the elastic element 300 on the cover opening button 100 allows the mating end 160 to pass over the stop portion 200 and enter into the locking notch 210. After the cover is closed, there is no need to manually adjust the position of the cover opening button 100. In addition, it should be noted that during the closing process, the position of the cover opening button 100 needs to be manually stabilized to ensure that the mating end 160 is limited and engaged with the stop portion 200, preventing the mating end 160 from rotating into the locking notch 210, maintaining the stability of the cover opening button 100, and allowing the upper cover 400 to lock smoothly with the body 500.

[0039] In some other specific embodiments, the lid opening key 100 is configured to be driven by external force so that the mating end 160 engages with the locking notch 210. The mating end 160 of the lid opening key 100 cannot automatically rotate into the locking notch 210; it needs to be manually driven to rotate after the lid is closed so that the mating end 160 rotates into the locking notch 210.

[0040] In some embodiments of this application, the cover opening key 100 has a first fixing part 140, the carrier has a second fixing part 430, the elastic member 300 is fixed between the first fixing part 140 and the second fixing part 430, and the first fixing part 140 and the second fixing part 430 are misaligned along the extension direction of the rotation axis of the cover opening key 100.

[0041] The first fixing part 140 and the second fixing part 430 are offset from each other in the rotation direction of the cover opening key 100. The elastic member 300 connected between the two is obliquely set, which can increase the stretching length of the elastic member 300, thereby increasing the driving force of the elastic member 300 on the cover opening key 100, making it easier for the mating end 160 to stop against the stop part 200 and rotate into the locking notch 210.

[0042] In some preferred embodiments, reference may be made to Figure 6 , Figure 10 and Figure 11 As shown, the carrier is provided with a mounting slot 440, and the cover opening key 100 is rotatably mounted in the mounting slot 440. (Reference) Figure 6 As shown, the mounting groove 440 is connected to the snap-fit ​​notch 210. The mounting groove 440 provides rotational space for the cover opening key 100, and the snap-fit ​​notch 210 is connected to the mounting groove 440. When the mating end 160 rotates into the snap-fit ​​notch 210, the mounting groove 440 can provide rotational space for the mating end 160, avoiding interference between the mating end 160 and the carrier, which would affect the mating stability of the mating end 160 and the carrier.

[0043] This application also provides a printer, which can be referred to in the embodiments. Figure 12 As shown, the housing assembly includes any of the above embodiments. The top cover 400 can be selected as the carrier, with one side of the top cover 400 rotatably connected to the printer, and the cover opening button 100 connected to the other side of the top cover 400. In another embodiment, the body 500 can also be selected as the carrier.

[0044] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0045] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application.

Claims

1. A housing assembly, characterized in that, Applied to a printer, the housing assembly includes a carrier and a cover release button (100). The carrier is the printer body (500) or the top cover (400). The cover release button (100) is rotatably connected to the carrier so as to be able to switch between an unlocked state and a locked state. When the cover release button (100) is in the unlocked state, the top cover (400) can be unlocked from the printer body (500). When the cover release button (100) is in the locked state, the top cover (400) can be locked from the printer body (500). The carrier is connected to a stop part (200), which is located on the rotation path of the cover opening key (100) when it switches from the unlocked state to the locked state. The stop part (200) is used to stop and limit the mating end (160) of the cover opening key (100) so that the first connecting part (170) on the cover opening key (100) can cooperate with the corresponding second connecting part (510) to lock the top cover (400) and the body (500) during the closing process of the printer.

2. A housing assembly according to claim 1, characterized in that, The stop part (200) is in surface contact with the mating end (160); And / or, the stop portion (200) includes at least two support units (220), all of which are distributed along the extension direction of the rotation axis of the cover key (100); And / or, the carrier has a bend (420), and a portion of the stop (200) is connected to the bend (420).

3. A housing assembly according to claim 1, characterized in that, The carrier is provided with a stop (410), which is located on the rotation path of the opening key (100), and the surface of the opening key (100) is provided with a limit protrusion (110). During the rotation of the cover opening key (100) from the locked state to the unlocked state, the stop part (410) can engage with the contact position between the limiting protrusion (110) and the surface of the cover opening key (100) to limit the engagement with the cover opening key (100) and the limiting protrusion (110).

4. A housing assembly according to claim 3, characterized in that, The opening key (100) has two rotating parts (120) that are relatively distributed. The opening key (100) is rotatably connected to the carrier through the two rotating parts (120). Along the extension direction of the rotation axis of the opening key (100), the limiting protrusion (110) extends from one end of the opening key (100) to the other end.

5. A housing assembly according to claim 1, characterized in that, The opening key (100) has an operating end (150), the operating end (150) and the mating end (160) are respectively located on both sides of the rotation axis of the opening key (100), the operating end (150) is used to be driven by external force, and the opening key (100) is provided with a deformation notch (130), the deformation notch (130) is located between the operating end (150) and the mating end (160); And / or, the opening key (100) is provided with a deformation notch (130), the deformation notch (130) being located on the rotation axis of the opening key (100).

6. A housing assembly according to claim 1, characterized in that, The stop part (200) is provided with a snap-fit ​​notch (210). During the rotation process of the opening key (100) from the unlocked state to the locked state, the mating end (160) presses against the stop part (200) and then snaps into the snap-fit ​​notch (210). The mating end (160) can be limited to the snap-fit ​​notch (210) and thus constrain the opening key (100) to the locked state.

7. A housing assembly according to claim 6, characterized in that, An elastic element (300) is connected between the cover opening key (100) and the carrier. The elastic element (300) is used to drive the cover opening key (100) to switch from the unlocked state to the locked state, and to drive the mating end (160) to rotate into the snap-fit ​​notch (210). Alternatively, the cover opening key (100) is configured to be driven by an external force so that the mating end (160) engages with the snap-fit ​​notch (210).

8. A housing assembly according to claim 7, characterized in that, The cover opening key (100) has a first fixing part (140), the carrier has a second fixing part (430), and the elastic member (300) is fixed between the first fixing part (140) and the second fixing part (430); Along the extension direction of the rotation axis of the cover opening key (100), the first fixing part (140) and the second fixing part (430) are misaligned.

9. A housing assembly according to claim 6, characterized in that, The carrier is provided with a mounting groove (440), the cover opening key (100) is rotatably mounted in the mounting groove (440), and the mounting groove (440) is connected to the snap-fit ​​notch (210).

10. A printer, characterized in that, Includes the housing assembly as described in any one of claims 1-9.

Images