Side pressing type gel pen structure

Abstract

The utility model discloses a side pressing type gel pen structure which comprises an upper pen cap, a lower pen cap and a pen clip, the upper pen cap and the lower pen cap are in threaded connection to form a cavity, one end of the cavity is provided with a pen outlet hole, a refill is arranged in the cavity, one end of the refill is sleeved with a spring and corresponds to the pen outlet hole, and the spring is arranged in the cavity. The refill is elastically connected with the side wall of one end of the cavity through a spring, a pressing assembly is arranged in the other end of the cavity, the other end of the refill is connected with one end of the pressing assembly, the pressing assembly is connected with the cavity in an up-down sliding mode, and an upper dead center and a lower dead center which are matched with the pressing assembly are arranged on the side wall of the other end of the cavity respectively. A rectangular hole is formed in the side wall of the cavity, one end of the pen clip is close to the pen outlet, the other end of the pen clip is far away from the pen outlet, a connecting block is arranged on the side wall of the end, far away from the pen outlet, of the pen clip, and the pen clip is detachably and fixedly connected with the other end of the pressing assembly after penetrating through the rectangular hole through the connecting block. The beneficial effect of the utility model is that the purpose of reducing the occupied space is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field related to gel pens, in particular to a side-pressing gel pen structure. Background Art

[0002] The push-type gel pen mainly realizes the extension and retraction of the pen core through the telescopic locking mechanism arranged therein, so that a space for arranging the telescopic locking mechanism needs to be reserved in the gel pen.

[0003] The Chinese patent number is CN220314573U, and the authorization announcement date is January 9, 2024. It discloses a push-type gel pen, including: a pen barrel, a refill is arranged in its cavity, a spring is arranged between the bottom of the refill and the bottom end of the pen barrel, and the two ends of the spring respectively resist the bottom of the refill and the bottom end of the pen barrel; a press cap, which drives the refill on the pen barrel to extend or retract through a telescopic locking mechanism; wherein the telescopic locking mechanism includes a slide rail member and a locking member, the slide rail member is integrally connected to the opening at the top end of the pen barrel, the press cap is slidably arranged on the pen barrel through the slide rail member and cannot rotate, the locking member is slidably arranged in the cavity of the pen barrel along the axial direction of the pen barrel, the top end of the refill is inserted into the cavity of the locking member from bottom to top and the top end of the refill resists on the top surface of the locking member, and the upper part of the locking member is inserted into the press cap from bottom to top.

[0004] It can be seen from the above patent that in the prior art, most of the press-type gel pens are operated by setting a press cap at the end of the pen, and in order to protect the cleanliness of the pen tip and the storage container when storing, the pen tip needs to be retracted into the pen barrel. At this time, the press cap extends outward under the action of the telescopic locking mechanism, so that the gel pen occupies a larger space. Utility Model Content

[0005] The utility model aims to overcome the defect of gel pens in the prior art that they occupy a large space when stored, and provides a side-pressing gel pen structure which is beneficial to reducing the occupied space.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] The pen holder is provided with a spring which is arranged on one end of the pen holder and corresponds to the pen holder, and a pressing assembly is arranged in the other end of the cavity, and the other end of the pen holder is connected to one end of the pressing assembly, and the pressing assembly is connected to the cavity for sliding up and down. An upper stop point and a lower stop point which match the pressing assembly are respectively arranged on the side wall of the other end of the cavity, and a rectangular hole is arranged on the side wall of the cavity, and one end of the pen clip is close to the pen holder, and the other end of the pen clip is far away from the pen holder, and a connecting block is arranged on the side wall of the end of the pen clip far away from the pen holder, and the pen clip is detachably and fixedly connected to the other end of the pressing assembly after passing through the rectangular hole through the connecting block.

[0008] The upper pen cover and the lower pen cover are threadedly connected to form a cavity, one end of the cavity is provided with a pen outlet hole, and a pen core is provided in the cavity. One end of the pen core is provided with a spring and corresponds to the pen outlet hole, the pen core is elastically connected to a side wall of one end of the cavity through the spring, and the other end of the cavity is provided with a pressing component, the other end of the pen core is connected to one end of the pressing component, and the pressing component is slidably connected to the cavity up and down, and the side wall of the other end of the cavity is respectively provided with an upper stop point and a lower stop point matching the pressing component, and a rectangular hole is provided on the side wall of the cavity, one end of the pen clip is close to the pen outlet hole, and the other end of the pen clip is away from the pen outlet hole, and a connecting block is provided on the side wall of the end of the pen clip away from the pen outlet hole, and the pen clip passes through the rectangular hole through the connecting block and is detachably fixedly connected to the other end of the pressing component. In the initial state, the pen tip on the pen core is located in the cavity, and the push assembly is located at the upper stop point under the action of the spring; when in use, the operator only needs to push the pen clip to overcome the elastic action of the spring to drive the push assembly to slide down, so that the pen core slides downward until the pen tip on the pen core extends out of the cavity through the pen outlet hole. At this time, the push assembly is limited to the lower stop point. Therefore, this scheme realizes the extension and retraction of the pen core through the pen clip on the side of the upper pen cover, which is conducive to reducing the occupied space; the rectangular hole limits the upward and downward movement of the pen clip, so that the dynamic push assembly can better cooperate with the upper stop point and the lower stop point for limitation.

[0009] Preferably, one end of the upper pen cap is threadedly connected to the lower pen cap, and the other end of the upper pen cap is plugged with an end cap, one end of the end cap is closed and located outside the upper pen cap, a retaining ring is protrudingly provided on the side wall of the cavity, the retaining ring is fixedly connected to the cavity, the other end of the end cap is located in the upper pen cap and limited on the retaining ring, the pressing assembly is located in the end cap, and an opening corresponding to the rectangular hole is provided on the side wall of the end cap, and the pen clip is detachably fixedly connected to the pressing assembly after passing through the rectangular hole and the opening in sequence through the connecting block. The end cap is plugged into the end of the upper pen cap, and the upper pen cap is threadedly connected to the lower pen cap, so that the installation and removal of the gel pen is convenient and quick, and it is convenient for maintenance and replacement of the pen core.

[0010] Preferably, a connecting column is protrudingly provided at the other end of the pressing assembly, one end of the connecting column is fixedly connected to the pressing assembly, a cap is sleeved on the other end of the connecting column, a heart ornament is fixed on the outside of the bottom of the cap, the heart ornament is located in the end cap, an arc-shaped snap ring is fixed on the inner side wall of the open end of the cap, a guide slope is provided on the edge of the other end of the connecting column, a groove matching the arc-shaped snap ring is provided on the outer side wall of the connecting column, the cap is detachably connected to the connecting column through the arc-shaped snap ring matching the groove, one end of the connecting block is fixedly connected to the side wall of the pen clip, a connecting ring is fixed on the other end of the connecting block, the connecting block is sleeved on the connecting column through the connecting ring and is limited between the end face of the pressing assembly and the open end of the cap. The end cap is made of transparent material, and the heart ornament is located inside the end cap, which is good for appearance. When disassembling, the user opens the end cap, then pulls out the heart ornament to separate the arc-shaped clamping ring from the clamping groove, and removes the heart ornament from the connecting column. At this time, the heart ornament is separated from the pressing assembly, and finally unscrew the lower pen cover to remove the pen core and the pressing assembly, which is convenient and quick.

[0011] Preferably, the push assembly includes an inner sleeve and an outer sleeve, one end of the inner sleeve is connected to the pen core and a plurality of locking teeth matching the lower stop point are fixed on its outer wall, and the plurality of locking teeth are evenly distributed along the circumference of the inner sleeve, the outer sleeve is sleeved on the other end of the inner sleeve, the outer sleeve and the inner sleeve are both slidably connected to the cavity up and down, one end of the outer sleeve is provided with a plurality of driving teeth in contact with the locking teeth, and the plurality of driving teeth are evenly distributed along the circumference of the outer sleeve, one end of the connecting column is fixedly connected to the end center of the outer sleeve, the connecting block is sleeved on the connecting column through a connecting ring and is limited between the end surface of the outer sleeve and the opening end of the cap. The driving teeth on the outer sleeve act on the locking teeth on the inner sleeve, so that under the pushing action of the pen clip, the inner sleeve is driven to rotate a certain angle, so that the locking teeth are contacted with the lower stop point to be limited, and the structure of the driving teeth and the locking teeth is the prior art and is not redundant.

[0012] Preferably, a guide groove is provided at the center of one end of the connecting column, a guide column matching the guide groove is provided at the end of the inner sleeve, a guide shaft is fixedly provided at the center of the guide groove, and a guide hole matching the guide shaft is provided at the center of the guide column. This design enables the inner sleeve and the outer sleeve to always remain on the same central axis during the sliding process, which is conducive to the straight entry and exit of the pen core and improves the stability of the structure.

[0013] Preferably, the thickness of the locking tooth is greater than that of the driving tooth. This design ensures that the locking tooth can also contact the lower dead point to be limited under the premise that the driving tooth and the locking tooth are always in contact.

[0014] Preferably, a plurality of slide bars are protrudingly provided on the side wall of the cavity, the slide bars are fixedly connected to the cavity, the end cap is limited to the top side of the retaining ring, the slide bar is located on the bottom side of the retaining ring, the plurality of slide bars are evenly distributed along the circumference of the cavity, one end of the slide bar is away from the pen outlet hole and connected with the retaining ring, the other end of the slide bar is close to the pen outlet hole and is suspended, a plurality of slide bars are protrudingly provided on the outer side wall of one end of the outer sleeve, the plurality of slide bars are evenly distributed along the circumference of the outer sleeve, and a slide groove is formed between each adjacent two slide bars, which matches the locking teeth and the slide bars one by one, the driving tooth is located outside the slide groove, one end of the slide groove is located on the bottom side of the retaining ring, and the other end of the slide groove is in an open state, the upper stop point is located at one end of the slide groove, and the lower stop point is located at the end of the slide bar close to the pen outlet hole. In the initial state, the slider and the locking tooth are both located in the corresponding slide groove under the action of the spring, and the slider is limited by contacting the upper stop point, and the pen core is retracted in the cavity; when in use, the user pushes the pen clip, and the driving teeth on the outer sleeve act on the locking teeth on the inner sleeve, so that under the push of the pen clip, the inner sleeve is driven to rotate a certain angle, so that the locking teeth are separated from the slide groove and contacted with the lower stop point under the action of the spring to be limited. At this time, the pen tip on the pen core extends out, which is convenient for writing.

[0015] The beneficial effects of the utility model are as follows: the scheme realizes the extension and retraction of the pen core through the pen clip on the side of the upper pen cover, thereby achieving the purpose of reducing the occupied space; the installation and disassembly are convenient and quick, and it is convenient for maintenance and replacement of the pen core; the end cap is made of transparent material, and the heart-shaped decoration is located inside the end cap, which is beneficial to the appearance; it is beneficial to the straight entry and exit of the pen core, and the stability of the structure is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 and Figure 2 All of them are structural schematic diagrams of the utility model;

[0017] Figure 3 yes Figure 2 Cross-sectional view of the middle DD;

[0018] Figure 4 It is a schematic diagram of the structure of the utility model after removing the upper pen cover and the lower pen cover;

[0019] Figure 5 yes Figure 3 A magnified view of the structure at center.

[0020] In the figure: 1. upper pen cover, 2. lower pen cover, 3. pen clip, 4. cavity, 5. pen outlet hole, 6. pen core, 7. pressing assembly, 8. upper dead center, 9. lower dead center, 10. rectangular hole, 11. connecting block, 12. end cap, 13. retaining ring, 14. connecting column, 15. cap, 16. heart ornament, 17. arc-shaped snap ring, 18. guide slope, 19. slot, 20. connecting ring, 21. inner sleeve, 22. outer sleeve, 23. locking tooth, 24. driving tooth, 25. guide groove, 26. guide column, 27. guide shaft, 28. guide hole, 29. slide bar, 30. slider, 31. slide groove. DETAILED DESCRIPTION

[0021] The utility model is further described below in conjunction with the accompanying drawings and specific implementation methods.

[0022] like Figure 1 , Figure 2 and Figure 3 In the embodiment described, a side-pressing gel pen structure comprises an upper pen cover 1, a lower pen cover 2 and a pen clip 3. The upper pen cover 1 and the lower pen cover 2 are threadedly connected to form a cavity 4. One end of the cavity 4 is provided with a pen outlet hole 5. A pen core 6 is provided in the cavity 4. One end of the pen core 6 is sleeved with a spring and corresponds to the pen outlet hole 5. The pen core 6 is elastically connected to the side wall of one end of the cavity 4 through the spring. A pressing component 7 is provided in the other end of the cavity 4. The other end of the pen core 6 is connected to one end of the pressing component 7. The pressing assembly 7 is connected to the cavity 4 by sliding up and down. The side wall of the other end of the cavity 4 is respectively provided with an upper stop point 8 and a lower stop point 9 matching the pressing assembly 7. A rectangular hole 10 is provided on the side wall of the cavity 4. One end of the pen clip 3 is close to the pen outlet hole 5, and the other end of the pen clip 3 is away from the pen outlet hole 5. A connecting block 11 is provided on the side wall of the end of the pen clip 3 away from the pen outlet hole 5. The pen clip 3 passes through the rectangular hole 10 through the connecting block 11 and is detachably fixedly connected to the other end of the pressing assembly 7.

[0023] like Figure 3 and Figure 4 As shown, one end of the upper pen cover 1 is threadedly connected to the lower pen cover 2, and the other end of the upper pen cover 1 is inserted with an end cap 12, one end of the end cap 12 is closed and located outside the upper pen cover 1, a retaining ring 13 is protrudingly provided on the side wall of the cavity 4, the retaining ring 13 is fixedly connected to the cavity 4, the other end of the end cap 12 is located in the upper pen cover 1 and limited on the retaining ring 13, the pressing assembly 7 is located in the end cap 12, and an opening corresponding to the rectangular hole 10 is provided on the side wall of the end cap 12, and the pen clip 3 passes through the rectangular hole 10 and the opening in sequence through the connecting block 11 and is detachably fixedly connected to the pressing assembly 7.

[0024] like Figure 3 and Figure 4 As shown, a connecting column 14 is protruding from the other end of the pressing component 7, one end of the connecting column 14 is fixedly connected to the pressing component 7, a cap 15 is sleeved on the other end of the connecting column 14, a heart-shaped ornament 16 is fixed on the bottom of the cap 15, and the heart-shaped ornament 16 is located in the end cap 12, an arc-shaped snap ring 17 is fixed on the inner side wall of the open end of the cap 15, a guiding inclined surface 18 is provided on the edge of the other end of the connecting column 14, a card groove 19 matching the arc-shaped snap ring 17 is provided on the outer side wall of the connecting column 14, and the cap 15 is detachably connected to the connecting column 14 through the arc-shaped snap ring 17 matching the card groove 19, one end of the connecting block 11 is fixedly connected to the side wall of the pen clip 3, and a connecting ring 20 is fixed on the other end of the connecting block 11, and the connecting block 11 is sleeved on the connecting column 14 through the connecting ring 20 and is limited between the end face of the pressing component 7 and the open end of the cap 15.

[0025] like Figure 3 and Figure 4 As shown, the pressing assembly 7 includes an inner sleeve 21 and an outer sleeve 22, one end of the inner sleeve 21 is connected to the pen core 6 and a plurality of locking teeth 23 matching the lower stop point 9 are fixed on its outer side wall, and the plurality of locking teeth 23 are evenly distributed along the circumference of the inner sleeve 21, the outer sleeve 22 is sleeved on the other end of the inner sleeve 21, and the outer sleeve 22 and the inner sleeve 21 are both connected to the cavity 4 for sliding up and down, and one end of the outer sleeve 22 is provided with a plurality of driving teeth 24 in contact with the locking teeth 23, and the plurality of driving teeth 24 are evenly distributed along the circumference of the outer sleeve 22, one end of the connecting column 14 is fixedly connected to the end center of the outer sleeve 22, and the connecting block 11 is sleeved on the connecting column 14 through the connecting ring 20 and is limited between the end face of the outer sleeve 22 and the opening end of the cap 15.

[0026] like Figure 5 As shown, a guide groove 25 is provided at the center of one end of the connecting column 14, a guide column 26 matching the guide groove 25 is provided at the end of the inner sleeve 21, a guide shaft 27 is fixedly provided at the center of the guide groove 25, and a guide hole 28 matching the guide shaft 27 is provided at the center of the guide column 26.

[0027] like Figure 3 and Figure 4 As shown, the thickness of the locking tooth 23 is greater than the thickness of the driving tooth 24 .

[0028] like Figure 3 and Figure 4As shown, a plurality of slide bars 29 are protrudingly provided on the side wall of the cavity 4, and the slide bars 29 are fixedly connected to the cavity 4, the end cap 12 is limited to the top side of the retaining ring 13, and the slide bars 29 are located at the bottom side of the retaining ring 13, and the plurality of slide bars 29 are evenly distributed along the circumference of the cavity 4, one end of the slide bar 29 is away from the pen outlet hole 5 and connected with the retaining ring 13, and the other end of the slide bar 29 is close to the pen outlet hole 5 and is suspended, and a plurality of slide bars 30 are protrudingly provided on the outer wall at one end of the outer sleeve 22, and the plurality of slide bars 30 are evenly distributed along the circumference of the outer sleeve 22, and a slide groove 31 that matches the locking tooth 23 and the slide bar 30 one by one is formed between each adjacent two slide bars 29, and the driving tooth 24 is located outside the slide groove 31, one end of the slide groove 31 is located at the bottom side of the retaining ring 13, and the other end of the slide groove 31 is in an open state, the upper stop point 8 is located at one end of the slide groove 31, and the lower stop point 9 is located at one end of the slide bar 29 close to the pen outlet hole 5.

[0029] In the initial state, the slider 30 and the locking tooth 23 are both located in the corresponding slide groove 31 under the action of the spring, and the slider 30 is limited by contacting the upper stop point 8, and the pen core 6 is retracted in the cavity 4; when in use, the user pushes the pen clip 3, and the driving tooth 24 on the outer sleeve 22 acts on the locking tooth 23 on the inner sleeve 21, so that when the pen clip 3 slides down, the inner sleeve 21 is driven to rotate a certain angle, so that the locking tooth 23 is separated from the slide groove 31 and is limited by contacting the lower stop point 9 under the action of the spring. At this time, the pen tip on the pen core 6 extends out, which is convenient for writing.

[0030] The end cap 12 is made of a transparent material, and the heart ornament 16 is located inside the end cap 12, which is good for appearance. When disassembling, the user opens the end cap 12, and then pulls out the heart ornament 16 to separate the arc-shaped clamping ring 17 from the clamping groove 19, and removes the heart ornament 16 from the connecting column 14. At this time, the heart ornament 16 is separated from the pressing component 7. Finally, unscrew the lower pen cover 2, and the pen core 6 and the pressing component 7 can be removed, which is convenient and quick.

Claims

1. A side-pressing gel pen structure, characterized in that: The invention comprises an upper pen cover (1), a lower pen cover (2) and a pen clip (3); the upper pen cover (1) and the lower pen cover (2) are threadedly connected to form a cavity (4); one end of the cavity (4) is provided with a pen outlet hole (5); a pen core (6) is arranged in the cavity (4); one end of the pen core (6) is provided with a spring and corresponds to the pen outlet hole (5); the pen core (6) is elastically connected to a side wall of one end of the cavity (4) through the spring; a pressing component (7) is arranged in the other end of the cavity (4); the other end of the pen core (6) is connected to one end of the pressing component (7); the pressing component (7) The pen holder (3) is connected to the cavity (4) by sliding up and down, and the side wall of the other end of the cavity (4) is respectively provided with an upper stop point (8) and a lower stop point (9) matching the push assembly (7). The side wall of the cavity (4) is provided with a rectangular hole (10). One end of the pen clip (3) is close to the pen outlet hole (5), and the other end of the pen clip (3) is away from the pen outlet hole (5). A connecting block (11) is provided on the side wall of the end of the pen clip (3) away from the pen outlet hole (5). The pen clip (3) passes through the rectangular hole (10) through the connecting block (11) and is detachably fixedly connected to the other end of the push assembly (7).

2. A side-pressing gel pen structure according to claim 1, characterized in that: One end of the upper pen cap (1) is threadedly connected to the lower pen cap (2), and the other end of the upper pen cap (1) is plugged with an end cap (12). One end of the end cap (12) is closed and located outside the upper pen cap (1). A retaining ring (13) is protrudingly provided on the side wall of the cavity (4). The retaining ring (13) is fixedly connected to the cavity (4). The other end of the end cap (12) is located in the upper pen cap (1) and is limited on the retaining ring (13). The push assembly (7) is located in the end cap (12). An opening corresponding to the rectangular hole (10) is provided on the side wall of the end cap (12). The pen clip (3) is detachably fixedly connected to the push assembly (7) after passing through the rectangular hole (10) and the opening in sequence through the connecting block (11).

3. A side-pressing gel pen structure according to claim 2, characterized in that: The other end of the push assembly (7) is provided with a connecting column (14) protruding therefrom. One end of the connecting column (14) is fixedly connected to the push assembly (7). A cap (15) is sleeved on the other end of the connecting column (14). A heart-shaped ornament (16) is fixed to the outside of the bottom of the cap (15). The heart-shaped ornament (16) is located inside the end cap (12). An arc-shaped snap ring (17) is fixed to the inner side wall of the open end of the cap (15). A guiding inclined surface (18) is provided on the edge of the other end of the connecting column (14). The connecting column (14) The outer wall of the connecting block (14) is provided with a groove (19) matching with the arc-shaped snap ring (17); the cap (15) is detachably connected to the connecting column (14) by matching the arc-shaped snap ring (17) with the groove (19); one end of the connecting block (11) is fixedly connected to the side wall of the pen clip (3); the other end of the connecting block (11) is fixedly provided with a connecting ring (20); the connecting block (11) is sleeved on the connecting column (14) through the connecting ring (20) and is limited between the end surface of the pressing assembly (7) and the opening end of the cap (15).

4. A side-pressing gel pen structure according to claim 3, characterized in that: The pressing assembly (7) comprises an inner sleeve (21) and an outer sleeve (22). One end of the inner sleeve (21) is connected to the pen core (6) and a plurality of locking teeth (23) matching the lower stop point (9) are fixed on the outer wall of the inner sleeve (21). The plurality of locking teeth (23) are evenly distributed along the circumference of the inner sleeve (21). The outer sleeve (22) is sleeved on the other end of the inner sleeve (21). Both the outer sleeve (22) and the inner sleeve (21) are slidably connected to the cavity (4) up and down. One end of the outer sleeve (22) is provided with a plurality of driving teeth (24) in contact with the locking teeth (23). The plurality of driving teeth (24) are evenly distributed along the circumference of the outer sleeve (22). One end of the connecting column (14) is fixedly connected to the center of the end of the outer sleeve (22). The connecting block (11) is sleeved on the connecting column (14) through a connecting ring (20) and is limited between the end surface of the outer sleeve (22) and the opening end of the cap (15).

5. A side-pressing gel pen structure according to claim 4, characterized in that: A guide groove (25) is provided at the center of one end of the connecting column (14), a guide column (26) matching the guide groove (25) is provided at the end of the inner sleeve (21), a guide shaft (27) is fixedly provided at the center of the guide groove (25), and a guide hole (28) matching the guide shaft (27) is provided at the center of the guide column (26).

6. A side-pressing gel pen structure according to claim 4, characterized in that: The thickness of the locking tooth (23) is greater than the thickness of the driving tooth (24).

7. A side-pressing gel pen structure according to claim 4, 5 or 6, characterized in that: A plurality of slide bars (29) are protrudingly provided on the side wall of the cavity (4), the slide bars (29) are fixedly connected to the cavity (4), the end cap (12) is limited to the top side of the retaining ring (13), the slide bar (29) is located on the bottom side of the retaining ring (13), and the plurality of slide bars (29) are evenly distributed along the circumference of the cavity (4), one end of the slide bar (29) is away from the pen outlet hole (5) and connected to the retaining ring (13), and the other end of the slide bar (29) is close to the pen outlet hole (5) and is suspended in the air, and a plurality of slide bars (29) are protrudingly provided on the outer wall of one end of the outer sleeve (22) A plurality of sliders (30) are evenly distributed along the circumference of the outer sleeve (22); a slide groove (31) is formed between each two adjacent slide bars (29) and is matched with the locking tooth (23) and the slider (30) one by one; the driving tooth (24) is located outside the slide groove (31); one end of the slide groove (31) is located at the bottom side of the retaining ring (13); the other end of the slide groove (31) is in an open state; the upper dead point (8) is located at one end of the slide groove (31); and the lower dead point (9) is located at one end of the slide bar (29) close to the pen outlet hole (5).

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