Roller printing pen

Abstract

A roller printing pen comprises a pen holder, a roller seat is arranged at the upper end of the pen holder, a printing roller is arranged on the roller seat, rotating shafts are arranged at the two ends of the printing roller respectively, the printing roller is rotationally arranged on the roller seat through the rotating shafts, the upper end of the roller seat extends upwards to form two extension arms, and the two extension arms are arranged on the roller seat. The two extension arms are symmetrical about the central axis of the pen holder; caulking grooves are formed in the inner side faces of the extension arms, each caulking groove comprises a guide groove in the upper portion and a fixing groove in the lower portion, and the lower end of each guide groove is communicated with the upper end of the corresponding fixing groove; the guide groove is in a big-end-up horn mouth shape, the fixing groove is round, the diameter of an opening in the upper end of the guide groove is larger than the diameter of the rotating shaft, and the straightness of the fixing groove is smaller than or equal to the diameter of the rotating shaft. The rotating shaft enters the guide groove from the upper end of the guide groove and is finally embedded into the fixing groove downwards.

Description

Technical Field

[0001] This utility model relates to a roller printing pen. Background Technology

[0002] CN218838997U, CN219007353U, and others provide a roller printing pen, which includes a pen barrel, a wheel seat at the upper end of the pen barrel, a printing roller on the wheel seat, and a rotating shaft at each end of the printing roller. The printing roller is rotatably mounted on the wheel seat via the rotating shaft. Printing ink can be applied to the printing roller, and rotating the printing roller will form a pattern on the paper. However, in the above-mentioned prior art, the installation of the printing roller is carried out by providing a vertical groove on the wheel seat and a recessed hole in the groove, and sliding the rotating shaft along the groove until the rotating shaft springs into the recessed hole. This installation method is relatively cumbersome. Summary of the Invention

[0003] In order to overcome the above-mentioned shortcomings of existing roller printing pens, this utility model provides a roller printing pen that is easier to install.

[0004] The technical solution of this utility model to solve its technical problem is: a roller printing pen, including a pen barrel, a wheel seat at the upper end of the pen barrel, a printing roller on the wheel seat, a rotating shaft at both ends of the printing roller, the printing roller being rotatably mounted on the wheel seat through the rotating shaft, and two extension arms extending upward from the upper end of the wheel seat, the two extension arms being symmetrical about the central axis of the pen barrel.

[0005] The inner side of the extension arm is provided with a groove, which includes an upper guide groove and a lower fixing groove, and the lower end of the guide groove and the upper end of the fixing groove are connected.

[0006] The guide groove is shaped like a flared mouth, wider at the top and narrower at the bottom, and the fixing groove is circular. The opening diameter at the upper end of the guide groove is larger than the diameter of the rotating shaft, and the diameter of the fixing groove is less than or equal to the diameter of the rotating shaft.

[0007] The rotating shaft enters the guide groove from the upper end and finally embeds itself downwards into the fixing groove.

[0008] Furthermore, the wheel seat has a convex positioning ring, and the wheel seat below the positioning ring is an insertion cylinder, which is inserted into the pen barrel.

[0009] Furthermore, the outer wall of the insertion tube is provided with a concave-convex portion.

[0010] Furthermore, the wheel seat is fitted with a protective sleeve that houses the printing roller.

[0011] Furthermore, the outer wall of the wheel seat above the positioning ring is provided with an upper concave-convex part.

[0012] Furthermore, the printing roller includes a wheel body, an insert shaft, and an insert cylinder. The insert shaft is provided with a radially protruding first limiting plate, and the insert cylinder is provided with a radially protruding second limiting plate. The two rotating shafts are respectively located outside the first limiting plate and the second limiting plate.

[0013] The wheel is fitted onto the insert and fixed, and the insert shaft is inserted into the insert and fixed, so that the wheel is located between the first limiting plate and the second limiting plate.

[0014] Furthermore, the wheel is fitted onto the insert and is press-fitted thereto, and the insert shaft is inserted into the insert and is press-fitted thereto.

[0015] Furthermore, the outer side of the insert is provided with insert protrusions and recesses, and the side of the insert shaft is provided with insert shaft protrusions and recesses.

[0016] Furthermore, the outer surface of the insert is provided with a rib along its axial direction, thereby forming an insert recess on the outer surface of the insert;

[0017] The side of the insert shaft has a raised ring, thereby forming a recessed and convex part on the side of the insert shaft.

[0018] The beneficial effects of this utility model are as follows: the combination of a funnel-shaped guide groove that is larger at the top and smaller at the bottom and a circular fixing groove allows the rotating shaft to enter the guide groove from the top and finally embed itself into the fixing groove, making the assembly of the printing roller very simple. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model.

[0020] Figure 2 This is an exploded view of the sleeve and the pen barrel.

[0021] Figure 3 This is a schematic diagram of the printing roller.

[0022] Figure 4 This is an exploded diagram of the printing roller.

[0023] Figure 5 It is an exploded assembly diagram of the printing roller and the pen barrel.

[0024] Figure 6 This is a schematic diagram of the wheel seat structure.

[0025] Figure 7 This is a cross-sectional view of the printing roller. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0027] Reference Figures 1-7 A roller printing pen includes a pen barrel 1, a wheel seat 2 at the upper end of the pen barrel 1, a printing roller 3 on the wheel seat 2, and a rotating shaft 4 at each end of the printing roller 3. The printing roller 3 is rotatably mounted on the wheel seat 2 via the rotating shaft 4. Two extension arms 5 extend upward from the upper end of the wheel seat 2, and the two extension arms 5 are symmetrical about the central axis of the pen barrel 1.

[0028] The inner side of the extension arm 5 is provided with a groove, which includes an upper guide groove 6 and a lower fixing groove 7. The lower end of the guide groove 6 and the upper end of the fixing groove 7 are connected.

[0029] The guide groove 6 is shaped like a flared mouth, wider at the top and narrower at the bottom, and the fixing groove 7 is circular. The opening diameter at the upper end of the guide groove 6 is larger than the diameter of the rotating shaft 4, and the diameter of the fixing groove 7 is less than or equal to the diameter of the rotating shaft 4.

[0030] The rotating shaft 4 enters the guide groove 6 from the upper end of the guide groove 6 and finally embeds itself into the fixing groove 7. The assembly of the printing roller 3 is very simple.

[0031] In one embodiment, the wheel seat 2 has a convex positioning ring 8, and the wheel seat below the positioning ring 8 is an insertion cylinder 9. The insertion cylinder 9 is inserted into the pen barrel 1 to achieve assembly between the wheel seat 2 and the pen barrel 1. To make the assembly between the wheel seat 2 and the pen barrel 1 more stable, in one embodiment, the outer wall of the insertion cylinder 9 is provided with a concave protrusion so that the protrusion can form an interference fit with the pen barrel 1. The concave protrusion can be formed by providing multiple convex rings on the outer wall of the insertion cylinder 9, so that the convex rings form a protrusion and the other parts form a concave part, thus forming a concave protrusion.

[0032] In one embodiment, a protective sleeve 10 is fitted onto the wheel seat 2 to house the printing roller 3. To ensure a more secure fit between the protective sleeve 10 and the wheel seat 2, in one embodiment, an upper concave-convex portion is provided on the outer wall of the wheel seat above the positioning ring 8, so that the protruding parts can form an interference fit with the protective sleeve 10. The upper concave-convex portion can be formed by providing multiple raised rings on the outer wall of the wheel seat above the positioning ring 8, thereby forming a protrusion at the raised rings and a concave portion at other parts.

[0033] In one embodiment, the printing roller 3 includes a wheel body 11, an insert shaft 12, and an insert cylinder 13. The insert shaft 12 is provided with a radially protruding first limiting plate 14, and the insert cylinder 13 is provided with a radially protruding second limiting plate 15. The two rotating shafts 4 are respectively located outside the first limiting plate 14 and the second limiting plate 15. During assembly, the wheel body 11 is first fitted onto the insert cylinder 13 and fixed, and then the insert shaft 12 is inserted into the insert cylinder 13 and fixed, thereby positioning the wheel body 11 between the first limiting plate 14 and the second limiting plate 15. This simplifies the assembly of the printing roller 3.

[0034] In one embodiment, the wheel 11 and the insert 13 are fixed by fitting the wheel 11 onto the insert 13 with an interference fit. Specifically, the outer surface of the insert 13 is provided with insert protrusions and concave portions, so that the protruding portion forms an interference fit with the wheel 11. The insert protrusions and concave portions can be formed by providing ribs 16 along the axial direction on the outer surface of the insert 13, thereby forming insert protrusions and concave portions on the outer surface of the insert 13, i.e., protrusions are formed at the ribs 16, and concave portions are formed elsewhere.

[0035] In one embodiment, the fixing method between the insertion shaft 12 and the insertion cylinder 13 is as follows: the insertion shaft 12 is inserted into the insertion cylinder 13 and subjected to an interference fit. Specifically, the side of the insertion shaft 12 is provided with an insertion shaft protrusion and concave portion, so that the convex portion forms an interference fit with the insertion cylinder 13. The insertion shaft protrusion and concave portion can be formed by: the side of the insertion shaft 12 is provided with a ring of protrusions 17, thereby forming an insertion shaft protrusion and concave portion on the side of the insertion shaft 12, that is, the protrusion 17 forms a convex portion, and the other places form a concave portion.

[0036] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0037] The embodiments of this utility model have been described above. However, this utility model is not limited to the above embodiments. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A roller printing pen, comprising a pen barrel, a wheel seat at the upper end of the pen barrel, a printing roller mounted on the wheel seat, and rotating shafts at both ends of the printing roller, the printing roller being rotatably mounted on the wheel seat via the rotating shafts, characterized in that: The upper end of the wheel seat extends upwardly two extension arms, which are symmetrical about the central axis of the pen barrel; The inner side of the extension arm is provided with an embedding groove, which includes an upper guide groove and a lower fixing groove, and the lower end of the guide groove and the upper end of the fixing groove are communicated; The guide groove is trumpet-shaped with the upper end larger than the lower end, and the fixing groove is circular, and the opening diameter of the upper end of the guide groove is larger than the diameter of the rotating shaft, and the diameter of the fixing groove is less than or equal to the diameter of the rotating shaft; The rotating shaft enters the guide groove from the upper end of the guide groove and is finally embedded into the fixing groove.

2. The roller stamp pen according to claim 1, wherein: The wheel seat has a protruding positioning ring, and the wheel seat below the positioning ring is an insertion cylinder, which is inserted into the pen barrel.

3. The roller stamp pen according to claim 2, wherein: The outer side wall of the insertion cylinder is provided with a concave-convex part.

4. The roller stamp pen according to claim 2, wherein: The wheel seat is provided with a sheath for sleeving the stamping roller.

5. The roller stamp pen according to claim 4, wherein: The outer side wall of the wheel seat above the positioning ring is provided with a concave-convex part.

6. Roller stamp pen according to one of claims 1 to 5, characterized in that The stamping roller includes a wheel body, an insertion shaft, and an insertion cylinder, the insertion shaft is provided with a radially protruding first limiting plate, the insertion cylinder is provided with a radially protruding second limiting plate, and the two rotating shafts are located outside the first limiting plate and the second limiting plate, respectively. The wheel body is sleeved on the insertion cylinder and fixed, and the insertion shaft is inserted into the insertion cylinder and fixed, so that the wheel body is located between the first limiting plate and the second limiting plate.

7. The roller stamp pen according to claim 6, wherein: The wheel body is sleeved on the insertion cylinder and fixed, and the insertion shaft is inserted into the insertion cylinder and fixed, so that the wheel body is located between the first limiting plate and the second limiting plate.

8. The roller stamp pen according to claim 7, wherein: The outer side of the insertion cylinder is provided with an insertion cylinder concave-convex part, and the side of the insertion shaft is provided with an insertion shaft concave-convex part.

9. The roller stamp pen of claim 8, wherein: The outer side of the insertion cylinder is provided with a convex rib along the axial direction, so as to form an insertion cylinder concave-convex part on the outer side of the insertion cylinder; The side of the insertion shaft is provided with a protruding ring, so as to form an insertion shaft concave-convex part on the side of the insertion shaft.

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