Special-shaped solid gum with replaceable core

Abstract

The utility model discloses special-shaped solid gum with a replaceable core. The rotating body is rotatably connected with the pen holder; the screw rod is arranged in the pen holder and is in linkage connection with the rotating body; the rubber core is used for loading rubber, is arranged in the pen holder and is connected with the screw rod, and when the rotating body rotates, the rotating body drives the screw rod and the rubber core to rotate synchronously; the rubber core is arranged in the pen holder, the threaded inner core is arranged in the pen holder and fixedly connected with the pen holder, the threaded rod is in threaded connection with the threaded inner core, and when the threaded rod rotates, the threaded inner core is fixed, so that the threaded rod and the rubber core can axially move upwards or downwards while rotating in the circumferential direction; according to the scheme, a special-shaped colloid structure can be adopted, and the colloid cannot be scratched with the inner wall of the pipe body containing the colloid in the colloid stretching and retracting process.

Description

Technical Field

[0001] The present application relates to the technical field of solid glue with replaceable cores, and in particular to a special-shaped solid glue with replaceable cores. Background Art

[0002] Solid glue is a commonly used bonding tool. Currently, the structure of this solid glue generally includes solid glue with replaceable core and solid glue with non-replaceable core. Solid glue with replaceable core is more widely used because a new tube of glue can be installed and used again after a tube of glue is used up, thus achieving the effect of multiple reuse.

[0003] At present, the colloids in this kind of solid glue structure with replaceable cores are mostly cylindrical structures. For example, the prior art CN201720811765.2, a pen-shaped solid glue, discloses a solid glue structure with a cylindrical colloid. When the rotating body is rotated, the screw cooperates with the rotating body to rotate, but because the convex ribs on the inner wall of the pen body limit the groove of the screw, the screw cannot rotate circumferentially and can only move up and down, so the up and down movement of the screw drives the movement of the colloid; in this structure, during the up and down movement of the colloid, the rotating body rotates circumferentially relative to the colloid, because the colloid and the rotating body are both cylindrical structures, and the colloid will not break or break when the two rotate relative to each other; however, when the colloid adopts a special-shaped structure, the colloid will be scratched against the inner wall of the rotating body during the rotation process, which will cause the colloid to be damaged or broken, and the friction between the special-shaped colloid and the inner wall of the rotating body will increase the difficulty of applying force to rotate the colloid in and out; therefore, it is now necessary to develop a solid glue structure with a replaceable core that is suitable for colloids with special-shaped structures. Utility Model Content

[0004] In view of the above-mentioned deficiencies in the prior art, the present application provides a special-shaped solid glue with a replaceable core that can adopt a special-shaped colloid structure and will not cause scratches between the colloid and the inner wall of the tube containing it during the expansion and contraction process of the colloid.

[0005] In order to solve the above technical problems, the technical solution adopted in the present application is: a special-shaped solid glue with a replaceable core, the specific structure of the special-shaped fixed glue includes:

[0006] pen;

[0007] A rotating body, which is rotatably connected to the pen holder;

[0008] A screw rod, which is disposed in the pen holder and is linked to the rotating body;

[0009] A rubber core for loading colloid, which is disposed in the pen holder and connected to the screw rod, and when the rotating body rotates, it drives the screw rod and the rubber core to rotate synchronously;

[0010] The threaded inner core is arranged in the pen body and fixedly connected to the pen body. The screw is threadedly connected to the threaded inner core. When the screw rotates, the threaded inner core is fixed so that the screw and the rubber core can move axially upward or downward while rotating circumferentially.

[0011] With the above structure, when the pen barrel and the rotating body are rotated circumferentially relative to each other, the rotating body is linked to the screw during the process, and the rotation of the rotating body will drive the screw to rotate, and the rotation of the screw will drive the rubber core to rotate together. Due to the existence of the threaded inner core, and the fixed connection between it and the pen barrel and the threaded connection between it and the screw, the rotation of the screw will move axially upward or downward relative to the rotation of the pen barrel and the threaded inner core, and at the same time, it will also drive the rubber core to move axially synchronously to realize the telescopic action of the colloid set thereon relative to the rotating body, so that the rubber core can realize synchronous rotation with the rotating body and axial telescopic movement relative to the rotating body. Therefore, there is no relative circumferential rotation between the rubber core and the rotating body, so there is no relative circumferential rotation between the colloid fixed on the rubber core and the inner wall of the rotating body but synchronous rotation, so even a special-shaped colloid will not be scratched against the inner wall of the rotating body.

[0012] Furthermore, a radially protruding connecting key is provided on the outer side wall of the threaded inner core, and a key groove cooperating with the connecting key is provided on the corresponding inner side wall of the pen body, so that the threaded inner core and the pen body are keyed to each other; by adopting the above structure, circumferential limitation is achieved between the threaded inner core and the pen body, and the circumferential synchronization of the two is maintained during use, and the screw rod can be driven to retract axially; the keyed connection between the two is convenient for assembly and disassembly. Of course, the above keyed connection is only a fixed connection method between the threaded inner core and the pen body, and the two can also be connected by means of snap-fit, interference fit, gluing, threading, etc.

[0013] Furthermore, a radial blocking platform is provided at the closed end of the keyway near the pen shaft, and the corresponding end of the connecting key abuts against the radial blocking platform; with this structure, the threaded inner core can be axially limited at a fixed position on the inner wall of the pen shaft, thereby ensuring the stability of the axial extension and retraction of the driving screw.

[0014] Furthermore, one axial end of the pen shaft is provided with an opening, and the rotating body is circumferentially rotatably fitted with the pen shaft through the opening, a through hole is provided on the bottom surface of the rotating body, the threaded inner core is located below the through hole, and the screw rod passes through the through hole and is axially arranged on the upper and lower sides of the through hole; by adopting this structure, the connection between the pen shaft, the rotating body, the threaded inner core and the screw rod is realized, so that the screw rod can drive the colloid to stably extend and retract axially.

[0015] Furthermore, a connecting portion for connecting to the rubber core is provided at the end of the screw at the upper part of the through hole, and a limiting protrusion interfering with the inner wall of the rotating body is provided below the connecting portion; with this structure, the rubber core and the screw can be connected so that the screw can synchronously drive the colloid to move up and down axially; and the setting of the limiting protrusion can ensure that the screw drives the rotating body to rotate synchronously in the circumferential direction while rotating, so that the colloid and the rotating body also rotate synchronously and no relative scratches will occur.

[0016] Furthermore, the connecting portion is a first protrusion structure extending axially upward, and the radial cross-section of the first protrusion is semicircular; the corresponding rubber core is provided with a depression adapted to the first protrusion; with this structure, the rubber core can be plug-connected with the upper end of the screw, which is more conducive to synchronous rotation and avoids scratches between the colloid and the rotating body.

[0017] Furthermore, a radial convex ring is provided on the screw below the connecting portion, and the outer diameter of the radial convex ring is larger than the diameter of the through hole, and the radial convex ring is located above the through hole; the limiting protrusion is provided on the outer peripheral wall of the radial convex ring and extends radially outward; with this structure, the radial convex ring can be placed above the bottom surface of the rotating body where the through hole is located, close to the opening end, so that during the axial movement of the screw, the rubber core can be prevented from being pushed by the bottom surface of the rotating body and causing separation from the screw, and it can also be used for limiting the descending process of the screw.

[0018] Furthermore, there are at least two limit protrusions, which are arranged opposite to each other in the radial direction. With this structure, the two limit protrusions interfere with the diagonal positions of the special-shaped inner wall of the rotating body respectively, thereby more evenly pushing the rotating body to rotate synchronously with the screw.

[0019] Furthermore, a first annular protrusion is provided on the inner wall of the pen shaft, and a second annular protrusion is correspondingly provided on the outer wall of the rotating body, and the first annular protrusion and the second annular protrusion are interlocked and connected with each other; this structure is adopted to ensure that the rotating body and the pen shaft can not only rotate relative to each other in the circumferential direction, but also be axially limited to each other.

[0020] Furthermore, a receiving groove for receiving the shaped colloid is provided at the upper end of the rubber core, and an anti-slip protrusion is provided on the inner wall of the receiving groove; with this structure, the shaped colloid can be inserted into the receiving groove, and the stability of the connection between the two is achieved through the anti-slip protrusion. When replacement is required, the rubber core and the shaped colloid can be detached from the screw as a whole and replaced with a new colloid and rubber core structure.

[0021] Furthermore, the outer peripheral wall of the irregular colloid is square, and a gap is provided between the outer peripheral wall and the inner wall of the rotating body; with this structure, the inner wall of the rotating body can be provided with a corresponding square structure adapted thereto, so that the colloid can be conveniently accommodated in the rotating body without contact between the two, thereby ensuring the smoothness of the expansion and contraction of the colloid.

[0022] Furthermore, a pen cap is sleeved on the outer side wall of the rotating body, and the inner and outer side walls of the rotating body and the pen holder that fit together are both cylindrical side wall structures; with this structure, the colloid can be protected by covering it with the pen cap, and at the same time, the corresponding inner and outer side walls of the rotating body and the pen holder are cylindrical, which facilitates the buckling between the two and also facilitates the circumferential relative rotation between the two.

[0023] Furthermore, a rotation-stop section is provided at the end of the screw rod near the closed end of the pen holder; this structure can play a limiting role in the process of the screw rod rising and screwing out, preventing it from separating from the threaded inner core. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic structural diagram of a three-dimensional diagram of a special-shaped solid glue with a replaceable core in the present application.

[0025] Figure 2 A schematic structural diagram of a cross-sectional view of a special-shaped solid rubber of a replaceable core of the present application.

[0026] Figure 3 A schematic structural diagram of a cross-sectional view of the special-shaped solid rubber portion of the replaceable core of the present application.

[0027] Figure 4 A schematic structural diagram of a three-dimensional view of a special-shaped solid rubber sleeve and a pen cap with a replaceable core in the present application.

[0028] Figure 5 A structural schematic diagram of a cross-sectional view of a special-shaped solid rubber sleeve and a pen cap with a replaceable core in the present application.

[0029] Figure 6 A schematic structural diagram of the assembly diagram of the special-shaped solid glue of the replaceable core of the present application combined with the pen cap.

[0030] Figure 7 A schematic structural diagram of a three-dimensional view of the screw of the present application.

[0031] Figure 8 A schematic diagram of the three-dimensional structure of the top of the special-shaped solid rubber screw with a replaceable core in the present application.

[0032] Fig. 9 Schematic diagram of the structure of the rubber core of this application.

[0033] Fig.10 Schematic diagram of the structure of the threaded inner core of the present application.

[0034] Fig.11 A schematic structural diagram of the three-dimensional image visible inside the pen barrel of the present application.

[0035] As shown in the accompanying drawings: 1. Pen body, 101. First annular protrusion, 102. Keyway, 103. Radial blocking platform, 2. Rotating body, 201. Through hole, 202. Second annular protrusion, 3. Screw, 301. Connecting part, 302. Limiting protrusion, 303. Radial protrusion ring, 304. Anti-rotation section, 4. Rubber core, 401. Accommodating groove, 402. Anti-slip protrusion, 5. Threaded inner core, 501. Connecting key, 6. Pen cap. DETAILED DESCRIPTION

[0036] The following will combine the embodiments and drawings to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only preferred embodiments, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention;

[0037] It should also be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be another intermediate component, fixed through the intermediate component. When a component is considered to be "connected" to another component, it may be directly connected to the other component or there may be another intermediate component at the same time. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be another intermediate component at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by technicians in the technical field of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0038] As an example, the attached Figure 1-11 As shown, the present application is a special-shaped solid glue with a replaceable core, and the structure of the special-shaped solid glue includes:

[0039] Pen 1;

[0040] A rotating body 2, which is rotatably connected to the pen holder 1;

[0041] A screw rod 3, which is disposed in the pen holder 1 and is linked to the rotating body 2;

[0042] The rubber core 4 for loading the colloid (special-shaped colloid) is arranged in the pen holder 1 and connected to the screw 3 (the connection between the rubber core 4 and the screw 3 is ensured to be able to rotate synchronously in the circumferential direction, such as by snap-fitting, bonding, interference fitting, etc. Here, the two are connected in a convenient disassembly manner, which is convenient for replacement after the colloid is used up). When the rotating body 2 rotates, it drives the screw 3 and the rubber core 4 to rotate synchronously;

[0043] The threaded inner core 5 is arranged in the pen body 1 and fixedly connected to the pen body 1 (the fixed connection here means that the threaded inner core 5 and the pen body 1 can be circumferentially limited and connected, and all connection methods for the two to achieve synchronous rotation are suitable for this application, such as the two can be bonded, bonded, interference fit, etc.), the screw 3 is threadedly connected to the threaded inner core 5, when the screw 3 rotates, the threaded inner core 5 is fixed so that the screw 3 and the rubber core 4 can move axially upward or downward while rotating circumferentially.

[0044] With the above structure, when the pen barrel 1 and the rotating body 2 are rotated circumferentially relative to each other, the rotation of the rotating body 2 will drive the screw 3 to rotate (the rotating body 2 and the screw 3 are linked and connected, and the two can achieve circumferential synchronous rotation). The rotation of the screw 3 drives the rubber core 4 to rotate together. Due to the existence of the threaded inner core 5, and the fixed connection between it and the pen barrel 1 and the threaded connection between it and the screw 3, the rotation of the screw 3 will rotate axially upward or downward relative to the pen barrel 1 and the threaded inner core 5, and at the same time, it will also drive the rubber core 4 to move axially synchronously to achieve the telescopic action of the colloid set thereon relative to the rotating body 2. In this way, the rubber core 4 can achieve synchronous rotation with the rotating body 2 and axial telescopic movement relative to the rotating body 2. Therefore, there is no relative circumferential rotation between the rubber core 4 and the rotating body 2, so the colloid fixed on the rubber core 4 and the inner wall of the rotating body 2 do not rotate relative to each other but rotate synchronously. In this way, even a special-shaped colloid will not be scratched against the inner wall of the rotating body 2.

[0045] As an example, the attached Figure 2 , 5 -6, 10-11, the outer side wall of the threaded inner core 5 described in the present application is provided with a radially protruding connecting key 501, and the corresponding inner side wall of the pen body 1 is provided with a key groove 102 that cooperates with the connecting key 501, and the threaded inner core 5 is bonded to the pen body 1; that is, as a specific embodiment, the threaded inner core 5 and the pen body 1 can be connected by the above-mentioned bonding method to achieve circumferential synchronous rotation of the two, and this connection method makes it convenient to assemble and disassemble the threaded inner core 5 and the pen body 1, and the bonded connection is also more stable.

[0046] As an example, the attached Fig.11 As shown, the keyway 102 described in the present application is provided with a radial blocking platform 103 at the closed end near the pen body 1, and the corresponding end of the connecting key 501 abuts against the radial blocking platform 103; that is, this end of the keyway 102 has a radially protruding end face structure, and after the connecting key 501 is inserted into the keyway 102, its axial end face abuts against the radial blocking platform 103. By adopting this structure, the threaded inner core 5 can be axially limited to a fixed position on the inner wall of the pen body 1, that is, the upper end of the threaded inner core 5 abuts against the bottom surface of the rotating body 2, and the lower end abuts against the radial blocking platform 103 through the connecting key 501, thereby limiting the threaded inner core 5 to a specific axial position of the pen body 1 to ensure the stability of the axial extension and retraction of the driving screw 3.

[0047] As an example, the attached Fig.11 As shown, one axial end of the pen holder 1 described in the present application is provided with an opening, and the rotating body 2 is circumferentially rotatably fitted with the pen holder 1 through the opening (that is, the lower part of the rotating body 2 is axially fitted into the pen holder 1 from the opening), and a through hole 201 is provided on the bottom surface of the rotating body 2 (the rotating body 2 is axially provided with an opening at the same end as the pen holder 1, and the corresponding other end has a bottom surface), and the threaded inner core 5 is located below the through hole 201 (the threaded inner core is axially limited at a specific position by the radial blocking platform 103 and the bottom surface of the rotating body 2). The screw rod 3 passes through the through hole 201 and is axially arranged on the upper and lower sides of the through hole 201 (that is, the screw rod 3 is inserted into the through hole 201, and has extension sections at the upper and lower parts of the axial direction of the through hole); the above structure realizes the circumferential rotational fit between the rotating body 2 and the pen holder 1, and realizes a linkage connection between the screw rod 3 and the rotating body 2. The screw rod 3 is located at the upper part of the through hole 201 for connection with the rubber core 4, and the part located at the lower part of the through hole 201 can rotate axially relative to the threaded inner core to drive the colloid to extend or retract into the rotating body 2.

[0048] As attached Figure 2-3 , 5, 7-8, the end of the screw 3 at the upper part of the through hole 201 described in the present application is provided with a connecting portion 301 for connecting with the rubber core 4, and a limiting protrusion 302 interfering with the inner wall of the rotating body 2 is provided below the connecting portion 301; that is, by adopting the above structure, the rubber core 4 can be synchronously connected with the screw 3, and the synchronous rotation between the screw 3 and the rotating body 2 can be achieved through the limiting protrusion 302, so that during the circumferential rotation process of the special-shaped colloid on the rubber core 4, the rotating body 2 also follows the synchronous rotation, and there is no circumferential relative rotation between the two, which can avoid the special-shaped colloid from being scratched, and is more conducive to the expansion and contraction of the colloid, and the rotation process is more labor-saving and smooth.

[0049] The connection between the rubber core 4 and the screw 3 of the present application can be in various ways, and all connection ways that ensure that the screw 3 drives the rubber core 4 to rotate synchronously without separation between the two are suitable for the present application, such as the two can include snap-fit, interference fit, gluing and other connection methods; here, in order to facilitate the replacement of the rubber core 4, as an example, as shown in the attached Figure 2-3 , 5 and 7, the connecting portion 301 described in the present application is a first protrusion structure extending axially upward, and the radial cross-section of the first protrusion is semicircular (the semicircle here can be more than a semicircle or less than a semicircle, or a half-circular structure); the corresponding rubber core 4 is provided with a recess adapted to the first protrusion (that is, it is convenient to insert the first protrusion into the recess to achieve the fixation between the two and the synchronous rotation); adopting this structure, the stability of the relative position of the first protrusion and the rubber core 4 after buckling can be improved, and the relative rotation of the two caused by the circular cross-section can be avoided, which may cause scratches between the special-shaped colloid and the inner wall of the rotating body 2.

[0050] As an example, the attached Figure 2-3 As shown in 5-7, a radial convex ring 303 is provided on the screw 3 described in the present application at a position below the connecting portion 301, and the outer diameter of the radial convex ring 303 is larger than the diameter of the through hole 201, and the radial convex ring 303 is located above the through hole 201, and the limiting protrusion 302 is provided on the outer peripheral wall of the radial convex ring 303 and extends radially outward; that is, the radial convex ring 303 is placed on the bottom surface of the rotating body 2 and its outer diameter is larger than the through hole 201. With this structure, the radial convex ring 303 can be placed above the bottom surface of the rotating body 2 where the through hole 201 is located, close to the snap-fit ​​end position, so that during the axial movement process of the screw 3, the rubber core 4 can be prevented from being pushed by the bottom surface of the rotating body 2 and causing separation from the screw 3, and it can also be used to limit the descending process of the screw 3 to avoid excessive downward movement.

[0051] As attached Figure 7 , 8 As shown, the limiting protrusions 302 described in the present application are provided with at least two and are arranged opposite to each other along the radial direction; with this structure, the two limiting protrusions 302 interfere with the diagonal positions of the irregular inner wall of the rotating body 2 respectively, thereby pushing the rotating body 2 to rotate synchronously with the screw 3 in a more balanced manner.

[0052] As attached Figure 2 , 5 -6 and 11, the inner wall of the pen holder 1 described in the present application is provided with a first annular protrusion 101, and the outer wall of the corresponding rotating body 2 is provided with a second annular protrusion 202, and the first annular protrusion 101 and the second annular protrusion 202 are mutually buckled and connected; as an example, as shown in the attached Figure 2As shown, after the pen shaft 1 and the rotating body 2 described in the present application are engaged with each other through the first annular protrusion 101 and the second annular protrusion 202, the end face of the open end of the pen shaft 1 just abuts against the axial end face of the convex ring set on the outer peripheral wall of the rotating body 2, thereby ensuring that the rotating body 2 and the pen shaft 1 can not only rotate relative to each other in the circumferential direction, but also be axially limited to each other.

[0053] As attached Figure 2-3 , 5 and 9, the upper end of the rubber core 4 described in the present application is provided with a receiving groove 401 for receiving the special-shaped colloid, and the inner wall of the receiving groove 401 is provided with an anti-skid protrusion 402; with this structure, the special-shaped colloid can be inserted into the receiving groove 401, and the stability of the connection between the two is achieved by the anti-skid protrusion 402. When replacement is required, the rubber core 4 and the special-shaped colloid can be detached from the screw 3 as a whole, and a new colloid and rubber core 4 structure can be replaced, which is easy to operate.

[0054] As an example, the outer peripheral wall of the irregular colloid described in the present application is square, and a gap is set between the outer peripheral wall and the inner wall of the rotating body 2; with this structure, the inner wall of the rotating body 2 can be set with a corresponding square structure adapted thereto, so that the colloid can be conveniently accommodated in the rotating body 2 without contact between the two, thereby ensuring the smoothness of the expansion and contraction of the colloid.

[0055] As an example, the attached Figure 4-6 As shown, a pen cap 6 is also sleeved on the outer wall of the rotating body 2 described in the present application (a clamping piece can also be provided on the pen cap 6 to form a pen-shaped solid glue structure for easy carrying; an annular protrusion is provided on the inner wall of the pen cap 6, and an annular protrusion is also provided on the corresponding outer wall of the rotating body 2, and the two are installed and disassembled by buckling and deforming), and the inner and outer walls of the rotating body 2 and the pen body 1 that fit each other are both cylindrical side wall structures; wherein the outer wall is on the side of the rotating body 2, and the inner wall corresponds to the position of the pen body 1. With this structure, the protection of the colloid can be achieved by covering the pen cap, and at the same time, the corresponding inner and outer walls of the rotating body 2 and the pen body 1 are cylindrical, which facilitates the buckling between the two and also facilitates the circumferential relative rotation between the two.

[0056] As attached Figure 7 As shown, the end of the screw 3 described in the present application close to the closed end of the pen holder 1 is provided with a rotation-stopping section 304, that is, a section of structure without threads is provided at the tail end of the screw 3, so that when it approaches the threaded inner core 5, since the rotation-stopping section has no external threads, it cannot continue to spirally rise relative to the threaded inner core, so that the axial upward movement of the screw 3 stops; adopting this structure, it can play a limiting role in the process of the screw 3 rising and screwing out, preventing it from being separated from the threaded inner core 5; as shown in the attached Fig.10As shown, an axially extending notch is provided on the peripheral wall of the threaded inner core of the present application, so that when the screw 3 and the threaded inner core 5 are assembled, the anti-rotation section 304 of the screw 3 passes over the threaded inner core 5 and is provided at both axial ends of the through hole 201 on the bottom surface of the rotating body 2.

[0057] The specific working principle and process of the above-mentioned replaceable core special-shaped solid glue structure of the present application are as follows: Figure 1-11 First, the threaded inner core 5 is keyed to the inner wall of the pen holder 1, the screw 3 is passed through the through hole 201 on the bottom surface of the rotating body 2 and screwed with the threaded inner core 5, the rubber core 4 is buckled on the connecting portion 301 of the screw 3, and a special-shaped colloid (herein, the colloid with its cross-section showing the direction is used as an example) is inserted and fixed in the accommodating groove 401 at the upper end of the rubber core 4, and the limiting protrusions 302 of the screw 3 are radially symmetrically arranged on both sides and interfere with the diagonal position of the inner wall of the rotating body 2 (that is, the two can be blocked so that The two are synchronously driven to rotate in the circumferential direction), the lower end of the rotating body 2 is inserted into the pen holder 1 through the opening at the upper end of the pen holder 1, and the two are buckled together through the protrusions between the two, so that the two can rotate relative to each other in the circumferential direction; at this time, the threaded inner core 5 is limited between the bottom surface of the rotating body 2 and the keyway on the inner wall of the pen holder 1, realizing the axial position limitation and can only rotate circumferentially with the pen holder; when the pen holder 1 and the rotating body 2 are relatively screwed and rotated in the circumferential direction, the rotating body 2 is provided on the screw 3 with the rotation The limiting protrusion 302 interfering with the inner wall of the rotating body 2 drives the screw rod 3 to rotate, and the rotation of the screw rod 3 drives the rubber core 4 to rotate together. Due to the existence of the threaded inner core 5, and the circumferential limiting connection between it and the inner wall of the pen barrel 1 and the threaded connection between it and the screw rod 3, the rotation of the screw rod 3 will rotate axially upward or downward relative to the pen barrel 1 and the threaded inner core 5, and at the same time, it also drives the rubber core 4 to move axially synchronously to realize the axial expansion and contraction of the special-shaped colloid arranged thereon relative to the rotating body 2. In this way, the rubber core 4 can realize synchronous circumferential rotation with the rotating body 2 and can also expand and contract axially up and down relative to the rotating body 2. Therefore, there is no relative circumferential rotation between the rubber core 4 and the rotating body 2, so there is no relative circumferential rotation between the special-shaped colloid fixed on the rubber core 4 and the inner wall of the rotating body 2, and the special-shaped colloid will not be scratched against the inner wall of the rotating body 2. It is only necessary to keep the inner wall contour of the rotating body 2 and the outer peripheral contour of the special-shaped colloid adapted to the appropriate colloid to achieve smoother axial expansion and contraction relative to the rotating body 2.

Claims

1. A special-shaped solid glue with replaceable core, Features: Its structure includes: Penholder (1); A rotating body (2) rotatably connected to the pen holder (1); A screw rod (3) which is disposed in the pen holder (1) and is linked to the rotating body (2); A rubber core (4) for loading colloid, which is arranged in the pen holder (1) and connected to the screw rod (3), and when the rotating body (2) rotates, it drives the screw rod (3) and the rubber core (4) to rotate synchronously; The threaded inner core (5) is arranged in the pen body (1) and is fixedly connected to the pen body (1). The screw rod (3) is threadedly connected to the threaded inner core (5). When the screw rod (3) rotates, the threaded inner core (5) remains stationary, so that the screw rod (3) and the rubber core (4) can move axially upward or downward while rotating in the circumferential direction.

2. The special-shaped solid glue with replaceable core according to claim 1, Features: A radially protruding connecting key (501) is provided on the outer side wall of the threaded inner core (5), and a key groove (102) matching with the connecting key (501) is provided on the corresponding inner side wall of the pen body (1), so that the threaded inner core (5) and the pen body (1) are keyed and connected.

3. The special-shaped solid glue with replaceable core according to claim 2, Features: A radial blocking platform (103) is provided at the closed end of the keyway (102) close to the pen holder (1), and the corresponding end of the connecting key (501) abuts against the radial blocking platform (103).

4. The special-shaped solid glue with replaceable core according to claim 1, Features: One axial end of the pen holder (1) is provided with an opening, and the rotating body (2) is rotatably fitted with the pen holder (1) through the opening. A through hole (201) is provided on the bottom surface of the rotating body (2), and the threaded inner core (5) is located below the through hole (201). The screw rod (3) passes through the through hole (201) and is axially arranged on the upper and lower sides of the through hole (201).

5. The special-shaped solid glue with replaceable core according to claim 4, Features: The end of the screw rod (3) above the through hole (201) is provided with a connecting portion (301) for connecting with the rubber core (4), and a limiting protrusion (302) is provided below the connecting portion (301) for interfering with the inner wall of the rotating body (2).

6. The special-shaped solid glue with replaceable core according to claim 5, Features: A radial convex ring (303) is provided on the screw rod (3) below the connecting portion (301), and the outer diameter of the radial convex ring (303) is greater than the diameter of the through hole (201), and the radial convex ring (303) is located above the through hole (201); the limiting protrusion (302) is provided on the outer peripheral wall of the radial convex ring (303) and extends radially outward.

7. The special-shaped solid glue with replaceable core according to claim 6, Features: At least two of the limiting protrusions (302) are provided and are arranged opposite to each other along the radial direction.

8. The special-shaped solid glue with replaceable core according to claim 1, Features: A first annular protrusion (101) is arranged on the inner wall of the pen holder (1), and a second annular protrusion (202) is arranged on the corresponding outer wall of the rotating body (2); the first annular protrusion (101) and the second annular protrusion (202) are interlocked and connected.

9. The special-shaped solid glue with replaceable core according to claim 1, Features: The upper end of the rubber core (4) is provided with a receiving groove (401) for receiving the irregularly shaped colloid, and the inner wall of the receiving groove (401) is provided with an anti-slip protrusion (402).

10. The special-shaped solid glue with replaceable core according to claim 9, Features: The outer peripheral wall of the shaped colloid is square, and a gap is provided between the outer peripheral wall and the inner wall of the rotating body (2).

11. The special-shaped solid glue with replaceable core according to claim 1, Features: A pen cap (6) is also sleeved on the outer side wall of the rotating body (2); the inner and outer side walls of the rotating body (2) and the pen holder (1) that fit together are both cylindrical side wall structures; and a rotation-stopping section (304) is provided at the end of the screw rod (3) close to the closed end of the pen holder (1).

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