Staggered pencil clamping mechanism and pencil sharpener applying same
By using a misaligned pen clamping mechanism in the pen sharpener, the problem of insufficient clamping force of the clamping wheel assembly is solved, and stable clamping of pen bodies of different diameters is achieved, which improves the stability and efficiency of the pen sharpener.
Patent Information
- Application Number
- CN202421183186.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-28
- Publication Date
- 2025-02-07
- Estimated Expiration
- 2034-05-28
AI Technical Summary
In the automatic pen lift function of the existing pen sharpener, the clamping force of the clamping wheel assembly is insufficient, resulting in the pen body easily sliding during the pen feeding process, affecting the uniformity and quality of the pen cutting.
The misaligned pen clip mechanism is adopted, and the two pen insert rubber rollers are axially misaligned to achieve clamping of pen bodies of different diameters to ensure the stability of the pen body during the pen feeding process.
It improves the stability and efficiency of the automatic pen advance and back pen function of the pen sharpener, ensures the uniformity and quality of the pen cutting, and provides users with a better pen cutting experience.
Smart Images
Figure CN222431948U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of pencil sharpeners, and more specifically to a dislocation pencil clamping mechanism and a pencil sharpener using the same. Background Art
[0002] In order to realize the automatic pen advance and retract function of the pencil sharpener, a pen clamping mechanism is generally set at the entrance of the tool holder. The pen clamping mechanism includes two clamping wheel assemblies, and the two clamping wheel assemblies move in the direction away from each other. According to the different movement trajectories of the clamping wheel assemblies, they can be divided into straight-line and figure-eight shapes. The clamping wheel assembly includes a connecting shaft, a pen feeding rubber roller, and gears and other components. The pen feeding rubber roller is set on the connecting shaft, which is used to contact the pen body and provide the necessary clamping force. The gear is used to engage with the turntable connected to the tool holder to transmit the torque of the tool holder to the pen feeding rubber roller. In this way, when the tool holder rotates, the pen feeding rubber roller can achieve synchronous rotation through the transmission action of the gear, so that the pen body is introduced into the pencil sharpener for cutting.
[0003] In the design of the clamping wheel assembly, it is necessary to ensure that there is an appropriate clamping force between the two feeding rollers. This is to avoid idling or jamming between the feeding rollers and the pen body. If the clamping force is insufficient, the pen body is prone to slipping during the feeding process, resulting in uneven sharpening or other problems, affecting the effect and quality of the sharpening. Summary of the invention
[0004] The utility model aims to solve one of the technical problems in the related art to a certain extent. To this end, the utility model proposes a staggered pen clamping mechanism, which can clamp pens of different diameters by axially staggering two pen feeding rubber rollers, thereby improving the stability and efficiency of the pencil sharpener.
[0005] The utility model also provides a pencil sharpener using the offset pencil clamping mechanism.
[0006] The technical solution adopted by the utility model is to provide a staggered pen clamping mechanism, comprising a shell and two clamping wheel assemblies arranged in parallel, wherein pen feeding rubber rollers are arranged on the connecting shafts of the two clamping wheel assemblies, the positions of the pen feeding rubber rollers and the connecting shafts are relatively fixed, the connecting shafts can move axially relative to the shell, and the two pen feeding rubber rollers have a movement tendency towards the staggered arrangement.
[0007] In the prior art, two pen-feed rubber rollers are symmetrically arranged on both sides of the pen-feed hole, and the two pen-feed rubber rollers move in directions away from each other. However, the utility model adopts an axially staggered setting of the pen-feed rubber rollers, that is, after the pencil is inserted into the pen-feed hole, the pen tip enters the gap between the two pen-feed rubber rollers, and as the pen body enters, the gap gradually expands, and the two pen-feed rubber rollers respectively drive the two connecting shafts to perform axial movement to achieve clamping of the pen body. Since the two pen-feed rubber rollers move in a staggered direction, they can better adapt to pen bodies of different diameters and ensure that the pen body will not slide during the pen feeding process. This staggered pen clamping mechanism can improve the stability and efficiency of the automatic pen feeding and retracting function of the pencil sharpener, and provide users with a better pen sharpening experience.
[0008] According to an embodiment of the utility model, a transmission member is provided at one or both ends of the connecting shaft, and the transmission member is connected or in contact with the two connecting shafts at the same time, and is used to transmit the axial movement of one connecting shaft to the other connecting shaft, so that the other connecting shaft moves axially synchronously; after the pencil is inserted into the pen feed hole, the pen tip may only contact one of the pen feed rubber rollers, which results in only one connecting shaft being driven to move when the pencil is fed, which is prone to jamming and causes the feeding to be not smooth enough; for this purpose, a transmission member is provided at one or both ends of the connecting shaft, and the transmission member can be regarded as a synchronous reversing component, that is, the axial movement of one connecting shaft is transmitted to the other connecting shaft, so that the two connecting shafts move synchronously and in opposite directions along their respective axial directions.
[0009] According to one embodiment of the utility model, the transmission member includes a first transmission member, which is rotatably mounted on the shell and located at the first end of the connecting shaft, and the first transmission member has a first extension arm connected or in contact with the ends of the two connecting shafts.
[0010] According to an embodiment of the utility model, the connecting shaft is provided with an annular groove near the first end, and a shaft sleeve is provided on the outer periphery of the annular groove, and the first transmission member is connected to the connecting shaft through the shaft sleeve; the annular groove and the shaft sleeve are provided to enable the two connecting shafts to rotate relative to the transmission member while enabling the two connecting shafts to move axially synchronously, thereby achieving a synchronous reversing effect; and / or
[0011] One of the first transmission member and the housing is provided with an axial hole, and the other is provided with a rotating shaft matched with the axial hole.
[0012] According to one embodiment of the utility model, the transmission member includes a second transmission member, which is rotatably mounted on the shell and located at the second end of the connecting shaft, and the second transmission member has a second extension arm connected or in contact with the ends of the two connecting shafts.
[0013] According to an embodiment of the utility model, the connecting shaft is provided with an annular groove near the second end, and a sleeve is provided on the outer periphery of the annular groove, and the second transmission member is connected to the connecting shaft via the sleeve; and / or
[0014] One of the second transmission member and the housing is provided with an axial hole, and the other is provided with a rotating shaft matched with the axial hole.
[0015] According to an embodiment of the utility model, the clamping wheel assembly further comprises a turntable and a gear arranged on the connecting shaft, and when the gear follows the synchronous axial movement of the connecting shaft, the gear always keeps meshing with the turntable.
[0016] According to an embodiment of the utility model, the clamping wheel assembly further comprises a limiting sleeve arranged on the connecting shaft, and the limiting sleeve and the gear are respectively arranged on both sides of the axial direction of the pen feeding rubber roller.
[0017] According to an embodiment of the present utility model, the housing has a support seat for mounting the connecting shaft; and / or
[0018] The transmission member is mounted on the housing through an elastic member, and the elastic member has an elastic tendency to keep the transmission member at an initial position.
[0019] A pencil sharpener comprises any one of the above-mentioned offset pen clamping mechanisms. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0021] Figure 1 A three-dimensional diagram of the staggered pen clamping mechanism in the embodiment of the utility model;
[0022] Figure 2 An exploded view of the staggered pen clamping mechanism in the embodiment of the utility model;
[0023] Figure 3 It is a top view of the staggered pen clamping mechanism in the embodiment of the utility model in the initial position;
[0024] Figure 4 A top view of the staggered pen clamping mechanism in the embodiment of the utility model;
[0025] Figure 5 This is a schematic structural diagram of the staggered pen clamping mechanism in the embodiment of the utility model when it is in the initial position;
[0026] Figure 6 This is a schematic diagram of the structure of the staggered pen clamping mechanism in the embodiment of the utility model;
[0027] Figure 7 A three-dimensional diagram of a housing in an embodiment of the utility model;
[0028] Figure 8 It is a three-dimensional diagram of the second gear and the rotating disk in the embodiment of the utility model;
[0029] Fig. 9 This is a connection diagram of the first transmission member, the first connecting shaft and the second connecting shaft in another embodiment of the present utility model.
[0030] Description of the numbers in the figure:
[0031] 1. Shell; 2. First connecting shaft; 3. Second connecting shaft; 4. First rubber roller for feeding the pen; 5. Second rubber roller for feeding the pen; 6. First transmission member; 7. Second transmission member; 8. First limiting sleeve; 9. Second limiting sleeve; 10. First gear; 11. Second gear; 12. Turntable; 13. Pen body; 14. Bushing;
[0032] 6a, first extension arm; 6b, first axial hole;
[0033] 7a, second extension arm; 7b, second axial hole;
[0034] 1a, first rotating shaft; 1b, second rotating shaft; 1c, first supporting seat; 1d, second supporting seat. DETAILED DESCRIPTION
[0035] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention. Embodiment 1
[0036] like Figure 1-8 As shown, in this embodiment, a staggered pen clamping mechanism is disclosed, including a shell 1 and two clamping wheel assemblies arranged in parallel, and a pen feeding rubber roller is provided on the connecting shafts of the two clamping wheel assemblies. The position of the pen feeding rubber roller and the connecting shaft is relatively fixed, and the connecting shaft can move axially relative to the shell 1, and the two pen feeding rubber rollers have a movement tendency towards a staggered arrangement.
[0037] Combination Figure 2As shown, in this embodiment, the two clamping wheel assemblies are respectively the first clamping wheel assembly and the second clamping wheel assembly, wherein the first clamping wheel assembly comprises a first connecting shaft 2 arranged transversely, a first feeding roller 4 mounted on the connecting shaft, a first limiting sleeve 8 and a first gear 10, and the first limiting sleeve 8 and the first gear 10 are respectively arranged on both sides of the axial direction of the first feeding roller 4. The first limiting sleeve 8 is elastically mounted on the first connecting shaft 2, and is used to make the first feeding roller 4 contact with the first gear 10, so that the first feeding roller 4 rotates synchronously with the first gear 10. In other embodiments, the first gear 10 and the first feeding roller 4 are respectively connected to the key of the first connecting shaft 2, so that the first gear 10 and the first feeding roller 4 rotate synchronously with the first connecting shaft 2, and the axial position is fixed. Similarly, the second clamping wheel assembly comprises a second connecting shaft 3 arranged transversely, a second feeding roller 5 mounted on the connecting shaft, a second limiting sleeve 9 and a second gear 11, and the second limiting sleeve 9 and the second gear 11 are respectively arranged on both sides of the axial direction of the second feeding roller 5. The second limiting sleeve 9 is elastically mounted on the second connecting shaft 3, and is used to make the second pen-feeding rubber roller 5 contact with the second gear 11, so that the second pen-feeding rubber roller 5 rotates synchronously with the second gear 11. In other embodiments, by connecting the second gear 11 and the second pen-feeding rubber roller 5 with the second connecting shaft 3 through keys, the second gear 11 and the second pen-feeding rubber roller 5 can also rotate synchronously with the second connecting shaft 3, and the axial position is fixed.
[0038] In the prior art, the connecting shafts in the clamping wheel assembly are rotatably mounted in the housing 1, and the axial positions of the connecting shafts and the housing 1 are relatively fixed. In this embodiment, the first connecting shaft 2 and the second connecting shaft 3 can both move relative to the housing 1 along their respective axial directions.
[0039] Combination Figure 3-6 As shown, in this embodiment, the first rubber roller 4 and the second rubber roller 5 both have an annular groove with an arc-shaped axial cross section, and the first rubber roller 4 and the second rubber roller 5 can also be regarded as a hyperbolic body of revolution structure. In the initial position, the first rubber roller 4 and the second rubber roller 5 are axially misaligned and are not bilaterally symmetrical. Because when the first rubber roller 4 and the second rubber roller 5 move to the bilaterally symmetrical position, the clamping gap between the two is in the maximum state, and the pencil body 13 that can be clamped by the first rubber roller 4 and the second rubber roller 5 is not larger than the maximum clamping gap.
[0040] Specifically, combined Figure 5-6As shown, transmission members are provided at both ends of the connecting shaft, and the transmission members are connected or in contact with the two connecting shafts at the same time, and are used to transmit the axial movement of one connecting shaft to the other connecting shaft, so that the other connecting shaft moves axially synchronously, and the transmission members include a first transmission member 6 and a second transmission member 7, the first transmission member 6 is rotatably mounted on the housing 1 and is located at the first end of the connecting shaft, and the first transmission member 6 has a first extension arm 6a connected or in contact with the ends of the two connecting shafts. The second transmission member 7 is rotatably mounted on the housing 1 and is located at the second end of the connecting shaft, and the second transmission member 7 has a second extension arm 7a connected or in contact with the ends of the two connecting shafts.
[0041] Further, in this embodiment, the housing 1 is provided with a first rotating shaft 1a and a second rotating shaft 1b, and the first rotating shaft 1a and the second rotating shaft 1b are respectively located at the first end and the second end of the first connecting shaft 2 and the second connecting shaft 3. Moreover, the first rotating shaft 1a and the second rotating shaft 1b are arranged in parallel with the pen feeding hole, and the first shaft hole 6b is correspondingly provided on the first transmission member 6, and the second shaft hole 7b is provided on the second rotating member, and the first shaft hole 6b is loosely matched with the first rotating shaft 1a, and the second shaft hole 7b is loosely matched with the second rotating shaft 1b. This allows both transmission members to swing relative to the housing 1, and the first transmission member 6, the first connecting shaft 2, the second transmission member 7 and the second connecting shaft 3 are combined to form a parallelogram structure. When the first connecting shaft 2 or the second connecting shaft 3 moves axially, the first transmission member 6 and the second transmission member 7 can drive the second connecting shaft 3 or the first connecting shaft 2 to move synchronously axially.
[0042] Furthermore, in this embodiment, the first extension arm 6a is formed by horizontally extending outwards toward both sides with the first shaft hole 6b as the center; the second extension arm 7a is formed by horizontally extending outwards toward both sides with the second shaft hole 7b as the center.
[0043] Furthermore, the clamping wheel assembly also includes a rotating disk 12 and a gear arranged on the connecting shaft. When the gear follows the synchronous axial movement of the connecting shaft, the gear always keeps meshing with the rotating disk 12. The rotating disk 12 is connected to the power unit through the tool holder. The power unit includes a motor and a reduction gear. For example, the motor shaft of the motor drives the reduction gear to rotate. The reduction gear is connected to the tool holder key to drive the tool holder to rotate. The upper end of the tool holder is connected to the rotating disk 12. While the rotating disk 12 follows the synchronous rotation of the tool holder, it always keeps meshing with the first gear 10 and the second gear 11. The first connecting shaft 2 and the second connecting shaft 3 are respectively driven to rotate by the first gear 10 and the second gear 11, and the first pen feeding rubber roller and the second pen feeding rubber roller rotate synchronously and in the opposite direction, thereby driving the pen body 13 to perform the pen feeding action; conversely, when the motor drives the reduction gear, the tool holder and the rotating disk 12 to rotate in the opposite direction, the first pen feeding rubber roller and the second pen feeding rubber roller rotate synchronously and in the opposite direction, thereby driving the pen body 13 to perform the pen retracting action.
[0044] Furthermore, in other embodiments, the power unit drives the turntable 12 to rotate through other transmission structures, such as a gear rod, which is vertically arranged on the pencil sharpener, and the two ends of the gear rod are respectively connected to the motor shaft and the turntable 12. The motor shaft drives the turntable 12 to rotate synchronously through the gear rod, thereby completing the power transmission between the power unit and the turntable 12.
[0045] Specifically, combined Fig. 9 As shown, in another embodiment, the first connecting shaft 2 and the second connecting shaft 3 are both provided with an annular groove near the first end, and the outer periphery of the annular groove is sleeved with a shaft sleeve 14, and the first extension arms 6a at both ends of the first transmission member 6 are respectively connected to the first connecting shaft 2 and the second connecting shaft 3 through a shaft sleeve 14; the annular groove and the shaft sleeve 14 are provided to make the two connecting shafts rotate relative to the transmission member while also making the two connecting shafts move axially synchronously, thereby achieving a synchronous reversing effect. That is, while the first connecting shaft 2 and the second connecting shaft 3 rotate relative to the first transmission member 6, the first connecting shaft 2 and the second connecting shaft 3 can also move axially synchronously, thereby achieving a synchronous reversing effect.
[0046] Specifically, in another embodiment, the first connecting shaft 2 and the second connecting shaft 3 are both provided with an annular groove near the second end, and the outer circumference of the annular groove is sleeved with a shaft sleeve 14, and the second extension arms 7a at both ends of the second transmission member 7 are respectively connected to the first connecting shaft 2 and the second connecting shaft 3 through a shaft sleeve 14; the annular groove and the shaft sleeve 14 are provided to make the two connecting shafts rotate relative to the transmission member while also making the two connecting shafts move axially synchronously, thereby achieving a synchronous reversing effect. That is, while the first connecting shaft 2 and the second connecting shaft 3 rotate relative to the first transmission member 6, the first connecting shaft 2 and the second connecting shaft 3 can also move axially synchronously, thereby achieving a synchronous reversing effect.
[0047] Specifically, combined Figure 7 As shown, the housing 1 has a support seat for mounting the connecting shaft. A first support seat 1c and a second support seat 1d are symmetrically arranged in the housing 1, and the first ends of the first connecting shaft 2 and the second connecting shaft 3 are rotatably arranged on the first support seat 1c, and the second ends of the first connecting shaft 2 and the second connecting shaft 3 are rotatably arranged on the second support seat 1d.
[0048] Specifically, combined Figure 5-6 As shown, in another embodiment, the transmission member is mounted on the housing 1 via an elastic member (not shown in the drawings), and the elastic member has an elastic tendency to keep the transmission member at an initial position.
[0049] Furthermore, in this embodiment, a torsion spring is provided between the first transmission member 6 and the first rotating shaft 1a, and between the second transmission member 7 and the second rotating shaft 1b, and the torsion spring has an elastic tendency to keep the transmission member in the initial position. For example, after the pencil is withdrawn, under the action of the torsion spring, a restoring force is applied to the first connecting shaft 2 and the second connecting shaft 3, and the other axial direction moves to the initial position.
[0050] In other embodiments, a pencil sharpener is disclosed, comprising the offset pen clamping mechanism described in this embodiment.
[0051] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.
[0052] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.
[0053] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0054] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.
[0055] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.
[0056] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.
Claims
1. A staggered pen clamping mechanism, comprising a housing and two clamping wheel assemblies arranged in parallel, characterized in that: The connecting shafts of the two clamping wheel assemblies are both provided with pen feeding rubber rollers, which are relatively fixed to the connecting shafts. The connecting shafts can move axially relative to the housing, and the two pen feeding rubber rollers have a tendency to move toward a staggered arrangement.
2. The staggered pen clamping mechanism according to claim 1, characterized in that: A transmission member is provided at one or both ends of the connecting shaft, and the transmission member is connected to or in contact with the two connecting shafts at the same time, and is used to transmit the axial movement of one connecting shaft to the other connecting shaft, so that the other connecting shaft moves axially synchronously.
3. The staggered pen clamping mechanism according to claim 2, characterized in that: The transmission member includes a first transmission member, which is rotatably mounted on the housing and located at a first end of the connecting shaft. The first transmission member has a first extension arm connected to or in contact with the ends of the two connecting shafts.
4. The staggered pen clamping mechanism according to claim 3, characterized in that: The connecting shaft is provided with an annular groove near the first end, and a shaft sleeve is provided on the outer periphery of the annular groove, and the first transmission member is connected to the connecting shaft via the shaft sleeve; and / or One of the first transmission member and the housing is provided with an axial hole, and the other is provided with a rotating shaft matched with the axial hole.
5. The staggered pen clamping mechanism according to claim 2 or 3, characterized in that: The transmission member includes a second transmission member, which is rotatably mounted on the housing and located at the second end of the connecting shaft. The second transmission member has a second extension arm connected to or in contact with the ends of the two connecting shafts.
6. The staggered pen clamping mechanism according to claim 5, characterized in that: The connecting shaft is provided with an annular groove near the second end, and a shaft sleeve is provided on the outer periphery of the annular groove, and the second transmission member is connected to the connecting shaft via the shaft sleeve; and / or One of the second transmission member and the housing is provided with an axial hole, and the other is provided with a rotating shaft matched with the axial hole.
7. The staggered pen clamping mechanism according to claim 1, characterized in that: The clamping wheel assembly also includes a rotating disk and a gear disposed on the connecting shaft. When the gear moves synchronously with the connecting shaft in the axial direction, the gear always keeps meshing with the rotating disk.
8. The staggered pen clamping mechanism according to claim 7, characterized in that: The clamping wheel assembly further comprises a limiting sleeve arranged on the connecting shaft, and the limiting sleeve and the gear are respectively arranged on both sides of the axial direction of the pen feeding rubber roller.
9. The staggered pen clamping mechanism according to claim 2, characterized in that: The housing has a support seat for mounting the connecting shaft; and / or The transmission member is mounted on the housing through an elastic member, and the elastic member has an elastic tendency to keep the transmission member at an initial position.
10. A pencil sharpener, characterized in that: It comprises the offset pen clamping mechanism described in any one of claims 1-9.