Length-adjustable pen

Abstract

The utility model discloses a length-adjustable pen, and aims to provide a length-adjustable pen which is adjustable in length and good in adjustment effect. Comprising a lower pen holder, a pen core is installed in the lower pen holder, and a sliding block is arranged at the upper end of the outer side wall of the lower pen holder; the upper penholder is connected with the lower penholder in a sleeved mode, a plurality of sliding grooves are formed in the upper penholder, guide grooves are formed among the sliding grooves and communicated with the sliding grooves, and the sliding blocks are arranged in the sliding grooves and can slide along the guide grooves. The multifunctional pen has the advantages that the sliding blocks of the lower pen holder are installed in the different sliding grooves of the upper pen holder, the length of the pen can be adjusted, and therefore it can be guaranteed that the adjusting effect is good.

Description

Technical Field

[0001] This utility model relates to the field of stationery technology, and in particular to an adjustable-length pen. Background Technology

[0002] A pen is a stationery item used for writing or drawing. Currently, most pens on the market are of fixed length, with no adjustable barrel length, making them inconvenient to carry when out and about. Furthermore, the length of the pen also affects how it is held by different age groups. A pen that is too long is inconvenient for children to hold, while a pen that is too short is inconvenient for adults to hold.

[0003] To ensure ease of carrying and use later, the pen barrel needs to be improved. Utility Model Content

[0004] The present invention aims to overcome the shortcomings of the poor length adjustment effect of existing pens and provides an adjustable length pen with adjustable length and good adjustment effect.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: an adjustable-length pen, comprising:

[0006] The pen barrel contains a pen refill, and a sliding block is provided on the upper end of the outer side wall of the pen barrel.

[0007] The upper pen barrel is sleeved with the lower pen barrel. The upper pen barrel is provided with several sliding grooves. A guide groove is provided between the several sliding grooves and communicates with the sliding grooves. The sliding block is placed in the sliding groove and can slide along the guide groove.

[0008] This pen features a lower pen barrel and an upper pen barrel. The lower pen barrel houses a replaceable pen refill. A sliding block is located at the upper end of the outer wall of the lower pen barrel. The upper pen barrel is cylindrical, with several sliding grooves arranged in parallel on its inner wall. Adjacent sliding grooves are connected by vertically arranged guide grooves. The lower pen barrel is inserted into the upper pen barrel. The sliding block is embedded within the sliding groove. When adjusting the length of the lower and upper pen barrels, the sliding block moves from one sliding groove into the guide groove, then along the guide groove to another sliding groove, thus adjusting the insertion length of the lower pen barrel. This structure facilitates pen length adjustment, allowing for different pen lengths to be obtained during use, with good adjustment performance.

[0009] Preferably, the sliding block is a cylindrical block with the same height as the sliding groove. A ball bearing is mounted on the lower end face of the sliding block. The cylindrical structure of the sliding block can be integrally injection molded or can be achieved by slotting the lower pen barrel. The sliding block is installed on the lower pen barrel via an insert connection. The height of the sliding block is the same as the height of the sliding groove, ensuring stability of the lower and upper pen barrels when the sliding block moves within the sliding groove. Simultaneously, the ball bearing mounted on the lower end face of the sliding block facilitates its movement, making the adjustment of the groove convenient and effortless.

[0010] Preferably, the lower end face of the sliding block is provided with a mounting groove, the inner diameter of the port of the mounting groove being smaller than the diameter of the ball, a support spring connected to the bottom surface of the mounting groove, a push plate connected to the support spring, and a ball groove provided on the push plate, in which the ball is placed. Specifically, the mounting groove at the lower end of the sliding block is a cylindrical groove, and the inner diameter at the port of the mounting groove is smaller than the diameter of the ball. This structure ensures that the ball will not fall out when placed in the mounting groove. A support spring is installed on the inner bottom surface of the mounting groove, and a push plate is connected to the end of the support spring. A ball groove is installed on the surface of the push plate for placing the ball. This structure allows the roller to be stably installed in the mounting groove, making operation convenient and labor-saving when moving the sliding block, and improving the effect when adjusting the length.

[0011] Preferably, the inner bottom surfaces of both the sliding groove and the guide groove are transparent. The transparent material allows for easy observation of the slider's movement, ensuring accurate placement of the slider into the sliding groove for length adjustment. This structure results in effective length adjustment.

[0012] Preferably, a stop is provided in the middle of the sliding groove, a magnetic block is provided on the side wall of the sliding block, and a suction block is provided on the side wall of the stop, with the magnetic block and the suction block being magnetically connected. The stop in the middle of the sliding groove restricts the sliding of the sliding block, while the magnetic block on the side wall of the sliding block has an attractive magnetic force. The suction block on the side wall of the stop is connected by magnetic attraction. This structure ensures stability of the pen barrel after length adjustment, guaranteeing a good adjustment effect.

[0013] Preferably, the lower surface of the middle part of the sliding groove is provided with a retaining groove, into which the ball bearing can be embedded. The retaining groove on the lower surface of the middle part of the sliding groove allows the ball bearing to be engaged and locked, achieving a limiting and locking effect on the sliding motion, ensuring stability after the pen length adjustment is completed, and guaranteeing a good adjustment effect.

[0014] Preferably, a buffer spring is connected to the top inner part of the upper pen barrel, and the buffer spring contacts the end of the lower pen barrel. The buffer spring, with its lower end in contact with the end of the lower pen barrel, ensures relative stability between the upper and lower pen barrels, thereby guaranteeing good pen adjustment.

[0015] The beneficial effects of this utility model are as follows: by installing the sliding block of the lower pen barrel in different sliding grooves of the upper pen barrel, the length of the pen can be adjusted, thus ensuring a good adjustment effect; the stop block set in the middle of the sliding groove can limit the movement of the sliding block, and a suction block is set on the stop block, while a magnetic block is set on the sliding block. The magnetic block can be magnetically connected with the suction block, thus ensuring the stability of the upper and lower pen barrels after length adjustment and ensuring a good adjustment effect; at the same time, the buffer spring set can ensure stability after length adjustment and ensure the use effect. Attached Figure Description

[0016] Figure 1 This is a three-dimensional view of the present invention;

[0017] Figure 2 This is a sectional view of the present invention;

[0018] Figure 3 yes Figure 2 Enlarged view at point A in the middle;

[0019] Figure 4 This is a cross-sectional view of the sliding block placed in the middle of the sliding groove in this utility model.

[0020] In the attached diagram: 1. Lower pen barrel, 2. Upper pen barrel, 3. Sliding block, 4. Sliding groove, 5. Guide groove, 6. Ball bearing, 7. Mounting groove, 8. Support spring, 9. Push plate, 10. Ball bearing groove, 11. Stop block, 12. Magnetic block, 13. Suction block, 14. Card slot, 15. Buffer spring. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present application or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0022] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0023] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this application.

[0024] Example 1, as Figure 1-4 As shown, an adjustable-length pen includes: a lower pen barrel 1, in which a pen refill is installed, and a sliding block 3 is provided on the upper end of the outer side wall of the lower pen barrel 1; an upper pen barrel 2, which is sleeved with the lower pen barrel 1, and a plurality of sliding grooves 4 are provided in the upper pen barrel 2, with guide grooves 5 provided between the plurality of sliding grooves 4 and communicating with the sliding grooves 4, and the sliding block 3 is placed in the sliding grooves 4 and can slide along the guide grooves 5.

[0025] The sliding block 3 is a cylindrical block, and the height of the sliding block 3 is the same as the height of the sliding groove 4. A ball bearing 6 is installed on the lower end face of the sliding block 3.

[0026] The lower end face of the sliding block 3 is provided with an installation groove 7. The inner diameter of the port of the installation groove 7 is smaller than the diameter of the ball 6. The bottom surface of the installation groove 7 is connected to a support spring 8. The support spring 8 is connected to a push plate 9. The push plate 9 is provided with a ball groove 10. The ball 6 is placed in the ball groove 10.

[0027] The inner bottom surfaces of both the sliding groove 4 and the guide groove 5 are transparent.

[0028] A stop block 11 is provided in the middle of the sliding groove 4, a magnetic block 12 is provided on the side wall of the sliding block 3, and a suction block 13 is provided on the side wall of the stop block 11. The magnetic block 12 and the suction block 13 are magnetically connected.

[0029] A slot 14 is provided on the bottom surface of the middle part of the sliding groove 4, and the ball 6 can be embedded in the slot 14.

[0030] A buffer spring 15 is connected to the top of the upper pen barrel 2, and the buffer spring 15 is in contact with the end of the lower pen barrel 1.

[0031] The working principle of this utility model is as follows: Figure 1-4As shown, this pen's structure includes a lower pen barrel 1 and an upper pen barrel 2. The lower pen barrel 1 houses a replaceable pen refill. A sliding block 3 is located at the upper end of the outer wall of the lower pen barrel 1. The upper pen barrel 2 is cylindrical, and its inner wall has several sliding grooves 4 arranged in parallel. Adjacent sliding grooves 4 are connected by guide grooves 5, which are vertically arranged. The lower pen barrel 1 is inserted into the upper pen barrel 2. The sliding block 3 is embedded in the sliding groove 4. Simultaneously, when adjusting the length of the lower pen barrel 1 and upper pen barrel 2, the sliding block 3 moves from the sliding groove 4 into the guide groove 5, and then along the guide groove 5 to another sliding groove 4, thus adjusting the insertion length of the lower pen barrel 1. This structure facilitates pen length adjustment, allowing for different pen lengths during use, and provides good adjustment results.

[0032] The sliding block 3 is a cylindrical block structure. This structure can be integrally injection molded or it can be grooved on the lower pen barrel 1. The sliding block 3 is installed on the lower pen barrel 1 by plugging it in. The height of the sliding block 3 is the same as the height of the sliding groove 4, which ensures the stability of the lower pen barrel 1 and the upper pen barrel 2 when the sliding block 3 moves in the sliding groove 4. At the same time, the ball bearing 6 installed on the lower end face of the sliding block 3 can facilitate the movement of the sliding block 3, making the operation of adjusting the groove convenient and labor-saving.

[0033] The sliding block 3 has a mounting groove 7 at its lower end. The mounting groove 7 is a cylindrical groove, and the inner diameter of the port of the mounting groove 7 is smaller than the diameter of the ball 6. This structure ensures that the ball 6 will not fall out when placed in the mounting groove 7. A support spring 8 is installed on the inner bottom surface of the mounting groove 7. The end of the support spring 8 is connected to a push plate 9. A ball groove 10 is installed on the surface of the push plate 9. The ball groove 10 is used to place the ball 6. This structure ensures that the ball 6 is stably installed in the mounting groove 7, making the operation convenient and labor-saving when moving the sliding block 3, and improving the effect when adjusting the length.

[0034] The inner bottom surfaces of the sliding groove 4 and the guide groove 5 are made of transparent material. The transparent shape makes it easy to observe the movement of the slider, thus ensuring that the slider 3 can be accurately placed into the sliding groove 4 when adjusting the length of the pen, thereby completing the length adjustment. This structure makes the length adjustment effect good.

[0035] The stop block 11 in the middle of the sliding groove 4 can restrict the sliding of the sliding block 3. At the same time, a magnetic block 12 is provided on the side wall of the sliding block 3. The magnetic block 12 has magnetic attraction. At the same time, a suction block 13 is provided on the side wall of the stop block 11. The magnetic block 12 and the suction block 13 are connected by magnetic attraction. This structure can ensure the stability of the pen barrel 1 after length adjustment and ensure good adjustment effect.

[0036] The slot 14 provided on the lower surface of the middle part of the sliding groove 4 allows the ball 6 to be embedded and locked, thereby limiting and locking the sliding, ensuring stability after the length adjustment of the pen barrel 1 is completed, and ensuring good adjustment effect.

[0037] A buffer spring 15 is connected to the inner top of the upper pen barrel 2. The lower end of the buffer spring 15 contacts the end of the lower pen barrel 1. The installation of the buffer spring 15 can ensure the relative stability of the lower pen barrel 1 and the upper pen barrel 2, thereby ensuring good adjustment of the pen.

[0038] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. An adjustable-length pen, characterized in that, include: The lower pen barrel (1) has a pen core installed inside it, and a sliding block (3) is provided on the upper end of the outer side wall of the lower pen barrel (1). The upper pen barrel (2) is sleeved with the lower pen barrel (1). The upper pen barrel (2) is provided with several sliding grooves (4). A guide groove (5) is provided between the several sliding grooves (4) and communicates with the sliding grooves (4). The sliding block (3) is placed in the sliding groove (4) and can slide along the guide groove (5).

2. The adjustable-length pen according to claim 1, characterized in that, The sliding block (3) is a cylindrical block. The height of the sliding block (3) is the same as the height of the sliding groove (4). A ball bearing (6) is installed on the lower end face of the sliding block (3).

3. The adjustable-length pen according to claim 2, characterized in that, The lower end face of the sliding block (3) is provided with an installation groove (7). The inner diameter of the port of the installation groove (7) is smaller than the diameter of the ball (6). The bottom surface of the installation groove (7) is connected to a support spring (8). The support spring (8) is connected to a push plate (9). The push plate (9) is provided with a ball groove (10). The ball (6) is placed in the ball groove (10).

4. The adjustable-length pen according to claim 1, characterized in that, The inner bottom surfaces of the sliding groove (4) and the guide groove (5) are both transparent.

5. An adjustable-length pen according to claim 1, characterized in that, A stop block (11) is provided in the middle of the sliding groove (4), a magnetic block (12) is provided on the side wall of the sliding block (3), and a suction block (13) is provided on the side wall of the stop block (11). The magnetic block (12) and the suction block (13) are magnetically connected.

6. An adjustable-length pen according to claim 2, characterized in that, The bottom surface of the middle part of the sliding groove (4) is provided with a slot (14), and the ball (6) can be embedded in the slot (14).

7. An adjustable-length pen according to claim 1, characterized in that, A buffer spring (15) is connected to the top of the upper pen barrel (2), and the buffer spring (15) is in contact with the end of the lower pen barrel (1).

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