Rubber roller quick release mechanism and portable printer

Abstract

The utility model provides a quick release mechanism of rubber covered roller and portable printer, including main frame body and hooking piece, main frame body both sides are equipped with the accommodation groove that has the opening respectively, the rubber covered roller is directly put into the accommodation groove from the opening, main frame body both sides are also connected with the hooking piece respectively, the hooking piece can move relative to main frame body, and the hooking piece is connected with the main frame body. The hooking piece is opposite to the containing groove in the corresponding side edge, the hooking piece is connected with a reset piece, the hooking piece is provided with an unlocking piece, the reset piece is arranged between the hooking piece and the main frame body, the unlocking piece is located on the side, facing the upper cover, of the main frame body, a pushing piece is further arranged in the main frame body, and the pushing piece abuts against the rubber roller arranged in the containing groove. The unlocking piece and the hooking piece are both integrated on the main frame body, so that the unlocking piece does not need to be arranged on the upper cover or the lower shell, all functions are integrated on the main frame body of the movement, decoupling of the movement and the shell is achieved, the movement can adapt to shells of any shapes, and the customized appearance can be achieved.

Description

Technical Field

[0001] This utility model relates to the field of printing equipment technology, and in particular to a quick-release mechanism for rubber rollers and a portable printer. Background Technology

[0002] In traditional portable printers, the rubber roller is mounted on the top cover. When the top cover is placed on the bottom cover, the two sides of the rubber roller are pressed into the hooks on the main frame of the machine mechanism in the bottom cover. Therefore, the rubber roller needs to disengage from the hooks on the main frame when the top cover is opened; otherwise, the top cover cannot be opened. To address this, existing portable printers need to have an unlocking mechanism in the outer shell (top cover or bottom cover), and the unlocking mechanism and hooks need to be driven to unlock the rubber roller, as shown in the patent document with publication number CN 211764306 U. This makes it impossible to change the outer shell of the portable printer at will. Therefore, in order to achieve the same machine mechanism to adapt to any outer shell, the rubber roller needs to be directly mounted in the hooks on the main frame, and the unlocking mechanism cannot be located in the outer shell. Utility Model Content

[0003] To address the aforementioned problems, the purpose of this utility model is to provide a quick-release mechanism for rubber rollers and a portable printer.

[0004] This utility model is implemented using the following method: a quick-release mechanism for a rubber roller, including a main frame body and hooks. The main frame body has accommodating grooves with openings on both sides. The rubber roller is directly inserted into the accommodating groove through the opening. Hooks are also connected to both sides of the main frame body. The hooks are movable relative to the main frame body and are opposite to the corresponding accommodating grooves on their respective sides. A reset member is connected to the hooks. An unlocking member is provided on the hooks. The reset member is located between the hooks and the main frame body, and the unlocking member is located on the side of the main frame body facing the upper cover. The unlocking member is used to drive the hooks to unlock, and the reset member is used to drive the hooks to reset and hook the rubber roller. The main frame body also includes a pusher member that pushes against the rubber roller after it has been inserted into the accommodating groove.

[0005] Preferably, the pushing member includes a pushing plate and a pushing spring, the pushing spring being installed between the pushing plate and the main frame body for pushing the pushing plate toward the rubber roller; the hook is hinged to the side of the main frame body, and the hook can swing from one side of the receiving groove to the other side; or, the hook is movably installed on the side of the main frame body, and the hook can move from one side of the receiving groove to the other side.

[0006] Preferably, the hook is hinged to the main frame body, and the unlocking member is a pressing section provided on the hook; the pressing section is provided on a section of the hook away from the hinge point and away from the receiving groove.

[0007] Preferably, the pressing section protrudes from the hook member away from the hinge point and is provided with a pressing part that bends toward the outside of the main frame body.

[0008] Preferably, the side surface of the main frame body that contacts the corresponding hook is provided with a raised rib or a groove; or, the surface of the hook that contacts the side surface of the main frame body is provided with a raised rib or a groove.

[0009] Preferably, the hook is a snap hook, and the snap hook has a slot on the side facing the receiving groove. The slot can penetrate into the receiving groove and block the opening end of the receiving groove.

[0010] Preferably, the slot is C-shaped, with its opening located at the lower part of the side of the hook facing the receiving groove. The upper part of the receiving groove, away from the hook, expands outward. The upper surface of the hook facing the receiving groove, in its reset state, together with the side of the receiving groove away from the hook, forms a V-shaped guide surface. Guide limiting grooves are provided on both sides of the main frame body, adjacent to the receiving grooves. The hook is installed in the guide limiting groove, and the inner end face of the guide limiting groove is provided with a rib or groove. When the guide limiting groove approaches the receiving groove and abuts against the hook, the hook is in a state where it can hook the rubber roller. More preferably, the torsion spring mounting groove is opened inward from the inner end face of the guide limiting groove.

[0011] Preferably, when the hook is hinged to the main frame body, the reset member is a torsion spring. The main frame body has torsion spring mounting grooves on both sides, adjacent to the receiving groove. The torsion spring is located in the torsion spring mounting groove, with one end connected to the hook and the other end abutting against the end face of the torsion spring mounting groove away from the receiving groove. When the hook is slidably connected to the main frame body, the reset member is a reset spring. The main frame body has a spring mounting groove, adjacent to the receiving groove. The reset spring is located in the spring mounting groove, with one end facing the receiving groove abutting against the hook and the other end away from the receiving groove abutting against the end face of the spring mounting groove away from the receiving groove.

[0012] Preferably, a rubber roller mounting plate is fixed on the outer surface of both sides of the main frame body, and a U-shaped groove is provided on the rubber roller mounting plate opposite to the receiving groove, the U-shaped groove accommodating the shaft end of the rubber roller; the opening ends of the receiving groove and the U-shaped groove face the upper cover; the hook is clamped between the rubber roller mounting plate and the side of the main frame body.

[0013] A portable printer is provided with a quick-release mechanism for a rubber roller as described in any of the preceding claims.

[0014] The beneficial effects of this utility model are as follows: This utility model provides a quick-release mechanism for rubber rollers and a portable printer. Compared with the prior art, this utility model has at least the following technical effects: 1. By directly setting receiving grooves for installing rubber rollers on both sides of the main frame body, the rubber rollers can be directly placed on the main frame body without first installing the rubber rollers on the top cover. Unlocking components are directly set on the hooks to drive the hooks to move and unlock. A pushing component is also installed in the main frame body to push the rubber rollers. After the unlocking component drives the hooks to unlock, the rubber rollers can be pushed out of the receiving grooves. The unlocking component and the hooks are integrated on the main frame body, so there is no need to set unlocking components on the top cover or the bottom shell. All functions are concentrated on the main frame body of the machine mechanism, realizing the decoupling of the machine mechanism and the shell. This allows the machine mechanism to adapt to shells of any shape and realizes customized appearance for customers. 2. The push-pull mechanism allows the user to unlock the hook mechanism, which then pushes the rubber roller out of the receiving groove. Once the user releases the unlock mechanism, the hook mechanism can no longer hold the rubber roller, eliminating the need to operate the unlock mechanism with one hand and pick up the rubber roller with the other, making operation simpler and more convenient. 3. Pressing the pressing section on the hook mechanism drives it to rotate away from the receiving groove, allowing the rubber roller to be removed. 4. The pressing section protrudes from the hook mechanism and is located away from the hinge point, making it easier to rotate the hook mechanism with a longer lever. It also has a pressing part, increasing the contact area with the user's fingers, reducing pressure, and making operation more comfortable. 5. The contact surfaces of the main frame and the hook mechanism have raised ribs or grooves, reducing the contact area and effectively reducing friction, making pressing and resetting the hook mechanism smoother. 6. The receiving groove is U-shaped, limiting the horizontal downward movement of the rubber roller. The upper end of the hook's groove blocks the opening of the receiving groove, limiting the vertical upward movement of the rubber roller, thus clamping the rubber roller in the receiving groove. 7. After the rubber roller is removed, the hook resets and stops, ensuring that the surface of the hook facing the receiving groove forms a V-shaped groove with the side of the receiving groove when the rubber roller is about to be inserted. When the rubber roller is inserted, the two end bushings are aligned with the V-shaped grooves. Pressing down on the rubber roller will push the two end hooks backward around the hinge point, allowing the rubber roller to be quickly inserted into the positioning groove. 8. The reset component is used to drive the hook to reset to a position that blocks the opening of the receiving groove, forming a V-shaped groove for guiding the roller into place, and then hooking the rubber roller through the groove. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of a quick-release mechanism for rubber rollers according to this utility model.

[0016] Figure 2 This is a partial schematic diagram showing the main frame body and hooking components of a quick-release mechanism for rubber rollers according to a utility model.

[0017] Figure 3 This is a schematic diagram showing the rubber roller in the installed position of a quick-release mechanism for rubber rollers according to this utility model.

[0018] Figure 4 This is a schematic diagram of the state of the rubber roller after disassembly in a quick-release mechanism for rubber rollers according to this utility model.

[0019] Figure 5 This is a three-dimensional schematic diagram of a quick-release mechanism for rubber rollers according to this utility model, showing the rubber roller placed on a V-shaped guide surface.

[0020] Figure 6 This is a side view of a quick-release mechanism for rubber rollers according to this utility model, with the rubber roller placed on a V-shaped guide surface.

[0021] Explanation of reference numerals: 1. Main frame body; 11. Receiving groove; 12. Guide limiting groove; 13. Protruding rib; 2. Hook and connector; 21. Slot; 3. Reset part; 4. Pressing section; 41. Pressing part; 5. Push plate; 6. Push spring; 7. V-shaped guide surface; 8. Rubber roller mounting plate; 9. Rubber roller; 10. Bushing. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0023] Please see Figures 1 to 6A quick-release mechanism for a rubber roller includes a main frame body 1 and a hook member 2. The main frame body 1 has two accommodating grooves 11 with openings on both sides. The rubber roller 9 is directly inserted into the accommodating groove 11 through the opening. The main frame body 1 also has hook members 2 connected to both sides. The hook members 2 are movable relative to the main frame body 1 and are opposite to the corresponding accommodating groove 11. The hook members 2 are connected to a reset member 3, and the hook members 2 have an unlocking member. The reset member 3 is located between the hook members 2 and the main frame body 1, and the unlocking member is located on the side of the main frame body 1 facing the upper cover. The unlocking member is used to drive the hook members 2 to unlock, and the reset member 3 is used to drive the hook members 2 to reset and hook the rubber roller 9. The main frame body 1 also has a pushing member that abuts against the rubber roller 9 after it is inserted into the accommodating groove 11. By directly setting receiving grooves 11 for mounting the rubber roller 9 on both sides of the main frame body 1, the rubber roller 9 can be placed directly on the main frame body 1 without first installing the rubber roller 9 on the top cover. An unlocking component is directly set on the hook 2 to drive the hook 2 to move and unlock. A pusher is also installed in the main frame body 1 to push the rubber roller 9. After the unlocking component drives the hook 2 to unlock, the rubber roller 9 can be pushed out of the receiving groove 11. The unlocking component and the hook 2 are both integrated on the main frame body 1, so there is no need to set the unlocking component on the top cover or the bottom shell. This concentrates all functions on the main frame body 1 of the movement, decoupling the movement from the shell. This allows the movement to adapt to shells of any shape and can realize customized appearance for customers.

[0024] Please see Figures 1 to 6 Preferably, the pushing member includes a pushing plate 5 and a pushing spring 6. The pushing spring 6 is installed between the pushing plate and the main frame body 1, and is used to push the pushing plate 5 toward the rubber roller 9. The hook member 2 is hinged to the side of the main frame body 1, and the hook member 2 can swing from one side of the receiving groove 11 to the other side; or, the hook member 2 is movably installed on the side of the main frame body 1, and the hook member 2 can move from one side of the receiving groove 11 to the other side. The pushing plate 5 can be the print head of the machine mechanism, and the pushing spring 6 will push the print head against the contact position with the rubber roller 9, so that when the rubber roller 9 rotates, it can provide sufficient friction for the movement of the paper and achieve clear printing. The pusher mechanism allows the user to unlock the hook 2, which then pushes the rubber roller 9 out of the receiving groove 11. After the user releases the unlocker, the hook 2 can no longer hook the rubber roller 9, eliminating the need to operate the unlocker with one hand and pick up the rubber roller 9 with the other, making operation simpler and more convenient. Preferably, in this embodiment, the hook 2 is hinged to the main frame body 1.

[0025] Please see Figures 1 to 6Preferably, the hook member 2 is hinged to the main frame body 1, and the unlocking member is a pressing section 4 provided on the hook member 2; the pressing section 4 is provided on a section of the hook member 2 away from the hinge point and away from the receiving groove 11. Pressing the pressing section 4 on the hook member will drive the hook member 2 to rotate away from the receiving groove 11 to make room, and the rubber roller 9 can be removed from the receiving groove 11.

[0026] Please see Figures 1 to 6 Preferably, the pressing section 4 protrudes from the hook member 2 away from the hinge point and is provided with a bent pressing part 41 facing outwards from the main frame body 1. The pressing section protrudes from the hook member 2 and is away from the hinge point, making it easier to drive the hook member 2 to rotate by extending the lever; and the pressing part 41 increases the contact area with the user's fingers, reducing pressure and making the operation more comfortable for the user.

[0027] Please see Figure 2 Preferably, the side surface of the main frame body 1 that contacts the corresponding hook member 2 is provided with a raised rib 13 or a groove; or, the surface of the hook member 2 that contacts the side surface of the main frame body 1 is provided with a raised rib 13 or a groove. More preferably, this embodiment uses a raised rib 13. The raised rib 13 or groove on the contact surface between the main frame body 1 and the hook member 2 reduces the contact area between them, effectively reducing the friction of the hook member 2 and making the pressing and resetting of the hook member 2 smoother.

[0028] Please see Figures 1 to 6 Preferably, the hook 2 is a latch, and the latch has a groove 21 on its side facing the receiving groove 11. The groove 21 can penetrate into the receiving groove 11 and block the opening end of the receiving groove 11. The receiving groove 11 is U-shaped, which limits the vertical downward direction of the rubber roller 9 in the horizontal direction. The upper end of the groove 21 of the latch blocks the opening side of the receiving groove 11, limiting the vertical upward direction of the rubber roller 9, thus clamping the rubber roller 9 in the receiving groove 11.

[0029] Please see Figures 1 to 6Preferably, the slot 21 is C-shaped, with its opening located at the lower part of the side of the hook facing the receiving groove 11. The upper part of the receiving groove 11, away from the hook, expands outward. The upper surface of the hook facing the receiving groove 11, in its reset state, together with the side of the receiving groove 11 away from the hook, forms a V-shaped guide surface 7. Guide limiting grooves 12 are provided on both sides of the main frame body 1, adjacent to the receiving groove 11. The hook member 2 is installed in the guide limiting groove 12. The inner end face of the guide limiting groove 12 is provided with the protruding rib 13 or a groove. When the guide limiting groove 12 approaches the receiving groove 11 and abuts against the hook member 2, the hook member 2 is in a state where it can hook the rubber roller 9. More preferably, the torsion spring mounting groove is opened inward from the inner end face of the guide limiting groove 12. When the rubber roller 9 is disassembled, the hook will be reset and locked in place, ensuring that the surface of the hook facing the receiving groove 11 and the side of the receiving groove 11 form a V-shaped groove (V-shaped guide surface 7) when the rubber roller 9 is about to be inserted. When the rubber roller 9 is inserted, the bushings 10 at both ends are aligned with the V-shaped groove. Pressing down on the rubber roller 9 will push the hooks at both ends to move backward around the hinge point, so that the rubber roller 9 can be quickly inserted into the positioning groove.

[0030] Please see Figures 1 to 6 Preferably, when the hook 2 is hinged to the main frame body 1, the reset member 3 is a torsion spring. The main frame body 1 has torsion spring mounting grooves on both sides, which are adjacent to the receiving groove 11. The torsion spring is located in the torsion spring mounting groove, with one end connected to the hook 2 and the other end abutting against the end face of the torsion spring mounting groove away from the receiving groove 11. When the hook 2 is slidably connected to the main frame body 1, the reset member 3 is a reset spring. The main frame body 1 has a spring mounting groove, which is adjacent to the receiving groove 11. The reset spring is located in the spring mounting groove, with one end of the reset spring facing the receiving groove 11 abutting against the hook 2 and the other end of the reset spring away from the receiving groove 11 abutting against the end face of the spring mounting groove away from the receiving groove 11. The reset component 3 is used to drive the hook to reset to a position that can block the opening of the receiving groove 11, thereby forming a V-shaped groove for guiding into place, and then hooking the rubber roller 9 through the slot 21 after making room. Preferably, this embodiment uses a torsion spring.

[0031] Please see Figures 1 to 6 Preferably, a rubber roller mounting plate 8 is fixed to the outer surface of both sides of the main frame body 1. The rubber roller mounting plate 8 has a U-shaped groove at a position opposite to the receiving groove 11, which accommodates the shaft end of the rubber roller 9. The opening ends of the receiving groove 11 and the U-shaped groove face the upper cover. The hook 2 is clamped between the rubber roller mounting plate 8 and the side of the main frame body 1. A bushing 10 is also fitted onto the shaft end of the rubber roller 9 to ensure smooth rotation after the rubber roller 9 is installed.

[0032] A portable printer is provided with a quick-release mechanism for a rubber roller as described in any of the preceding claims.

[0033] The working principle of this utility model is as follows:

[0034] When the rubber roller 9 needs to be disassembled, when the rubber roller 9 is in the locked state, press the pressing part 41 on both sides of the hook simultaneously. The hook swings away from the receiving groove 11. At this time, the groove 21 of the hook leaves the opening end of the receiving groove 11 and no longer blocks the exit path of the rubber roller 9. The rubber roller 9 will be automatically popped back to the starting installation position of the rubber roller 9 (i.e., the opening of the receiving groove 11) by the upward pre-pressure transmitted by the push spring 6 through the push plate 5. The rubber roller 9 can then be removed. After the rubber roller 9 is removed, release the pressing part 41. The reset part 3 (torsion spring) will push the hook to reset, so that the groove 21 of the hook re-enters the receiving groove 11. The upper side of the receiving groove 11 forms an indentation with the lower surface and side of the receiving groove 11. At this time, the surface of the hook above the groove 21 facing the receiving groove 11 will form a V-shaped groove with the side of the receiving groove 11 further away from the hook (e.g., Figure 4 (As shown).

[0035] When installing the rubber roller 9, align the bushings 10 at both ends of the rubber roller 9 with the V-shaped groove (V-shaped guide surface 7) formed by the inclined surface of the hook and the sides of the left and right receiving grooves 11 (e.g., Figure 5 , Figure 6 As shown), simultaneously pressing down on both ends of the rubber roller 9, the inclined surfaces of the left and right hooks, under force, will retract around the hinge point to make room. The left and right bushings 10 of the rubber roller 9 then smoothly enter the slot 21 along the inclined surface of the V-shaped groove. Having lost the force of the rubber roller 9, the left and right hooks are automatically reset by the torsion spring, and the slot 21 re-enters the receiving groove 11, restricting the upper part of the left and right bushings 10, thereby clamping the rubber roller 9 (as shown). Figure 2 , Figure 3 (As shown).

[0036] Several points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection" and "linkage" should be interpreted broadly, and can be mechanical or electrical connection, or internal connection between two components, or direct connection. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationship. When the absolute position of the described object changes, the relative positional relationship may change.

[0037] Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0038] Finally, the above description is only a preferred embodiment of the present utility model. The protection scope of the present utility model is not limited to the above embodiments. All technical solutions that fall within the scope of the present utility model are protected by the present utility model.

[0039] It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of this utility model should also be considered within the scope of protection of this utility model.

Claims

1. A quick-release mechanism for rubber rollers, comprising a main frame body, characterized in that: The main frame body has two opening-shaped receiving grooves on its two sides. The rubber roller is directly inserted into the receiving groove through the opening. The two sides of the main frame body are also connected to hooks. The hooks are movable relative to the main frame body and are opposite to the receiving grooves on the corresponding sides. The hooks are connected to reset members and have unlocking members. The reset members are located between the hooks and the main frame body and are located on the side of the main frame body facing the top cover. The unlocking members are used to drive the hooks to unlock and the reset members are used to drive the hooks to reset and hook the rubber roller. The main frame body also has a pusher that pushes against the rubber roller after it is inserted into the receiving groove.

2. The quick-release mechanism for a rubber roller according to claim 1, characterized in that: The pushing member includes a pushing plate and a pushing spring. The pushing spring is installed between the pushing plate and the main frame body to push the pushing plate toward the rubber roller. The hook is hinged to the side of the main frame body and can swing from one side of the receiving groove to the other side. Alternatively, the hook is movably installed on the side of the main frame body and can move from one side of the receiving groove to the other side.

3. The quick-release mechanism for a rubber roller according to claim 2, characterized in that: The hook is hinged to the main frame body, and the unlocking member is a pressing section provided on the hook; the pressing section is provided on a section of the hook away from the hinge point and away from the receiving groove.

4. The quick-release mechanism for a rubber roller according to claim 3, characterized in that: The pressing section protrudes from the hook member away from the hinge point and is provided with a bent pressing part facing outwards from the main frame body.

5. The quick-release mechanism for a rubber roller according to claim 1, characterized in that: The side of the main frame body that contacts the corresponding hook is provided with a raised rib or a groove; or, the surface of the hook that contacts the side of the main frame body is provided with a raised rib or a groove.

6. The quick-release mechanism for a rubber roller according to claim 5, characterized in that: The hook is a latch, and the latch has a slot on the side facing the receiving groove. The slot can penetrate into the receiving groove and block the opening end of the receiving groove.

7. The quick-release mechanism for a rubber roller according to claim 6, characterized in that: The slot is C-shaped, with its opening located at the lower part of the side of the hook facing the receiving groove. The upper part of the receiving groove, away from the hook, expands outward. The upper surface of the hook facing the receiving groove, in its reset state, together with the side of the receiving groove away from the hook, forms a V-shaped guide surface. Both sides of the main frame body are provided with guide limiting grooves, which are adjacent to the receiving grooves. The hook is installed in the guide limiting groove, and the inner end face of the guide limiting groove is provided with the rib or groove. When the guide limiting groove approaches the receiving groove and abuts against the hook, the hook is in a state where it can hook the rubber roller.

8. The quick-release mechanism for a rubber roller according to claim 1, characterized in that: When the hook is hinged to the main frame body, the reset member is a torsion spring. The main frame body has torsion spring mounting slots on both sides, adjacent to the receiving slot. The torsion spring is located in the torsion spring mounting slot, with one end connected to the hook and the other end abutting against the end face of the torsion spring mounting slot away from the receiving slot. When the hook is slidably connected to the main frame body, the reset member is a reset spring. The main frame body has a spring mounting slot, adjacent to the receiving slot. The reset spring is located in the spring mounting slot, with one end facing the receiving slot abutting against the hook and the other end facing away from the receiving slot abutting against the end face of the spring mounting slot away from the receiving slot.

9. The quick-release mechanism for a rubber roller according to claim 1, characterized in that: A rubber roller mounting plate is fixed on the outer surface of both sides of the main frame body. A U-shaped groove is provided on the rubber roller mounting plate opposite to the receiving groove. The U-shaped groove accommodates the shaft end of the rubber roller. The opening ends of the receiving groove and the U-shaped groove face the upper cover. The hook is clamped between the rubber roller mounting plate and the side of the main frame body.

10. A portable printer, characterized in that: The invention comprises a quick-release mechanism for rubber rollers as described in any one of claims 1-9.

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