Positioning shaft structure

Abstract

This invention discloses a positioning pivot structure. The positioning pivot structure includes a sleeve, an elastic member, a pressing member, and a positioning pin. The sleeve has an internal accommodating space and an opening communicating with the accommodating space. The peripheral wall of the sleeve has a first slot and a second slot communicating with each other. The elastic member is disposed in the accommodating space. The pressing member is inserted into the sleeve through the opening, allowing the pressing member to move upward in one axis and rotate upward around the sleeve. The positioning pin is disposed on the pressing member. At least a portion of the positioning pin protrudes from the sleeve and engages with the first slot and the second slot.

Description

Positioning shaft structure Technical Field

[0001] This invention relates to a positioning pivot structure, and more particularly to a positioning pivot structure that uses axial pressing to fix segments. Prior Technology

[0002] Existing flip-up or hinge-type electronic devices (such as laptops or teleprompters) rely on friction for support and positioning of their hinges at specific angles. However, when the top cover or supporting components are heavy, the friction is often insufficient to bear the load, causing the device to easily slip, loosen, or fail to provide stable support. This results in poor positioning reliability and makes it difficult to meet the requirements for high stability and precise angle fixation in actual use.

[0003] Therefore, how to overcome the above-mentioned defects through structural design improvements has become one of the important issues to be addressed in this field. Summary of the Invention

[0004] The technical problem this invention aims to solve is to provide a positioning shaft structure that uses axial pressing to fix segments, addressing the shortcomings of existing technologies.

[0005] To address the aforementioned technical problems, one technical solution adopted in this invention is to provide a positioning pivot structure, comprising a sleeve, an elastic element, a pressing element, and a positioning pin. The sleeve has an internal accommodating space and an opening communicating with the accommodating space. The peripheral wall of the sleeve has a first and a second communicating groove. The elastic element is disposed within the accommodating space. The pressing element is inserted into the sleeve through the opening and abuts against the elastic element. The pressing element moves upward in one axial direction relative to the sleeve and rotates upward one full turn. The positioning pin is disposed on the pressing element. At least a portion of the positioning pin protrudes from the sleeve and engages with the first and second grooves.

[0006] In one embodiment of this invention, when the pressing member is not pressed, the pressing member is driven by the elastic force of the elastic member, causing the positioning pin to engage in the first slot to restrict the rotation of the pressing member.

[0007] In one embodiment of this invention, when the pressing member is pressed by an external force and moves axially and rotates circumferentially, the positioning pin is disengaged from the first slot, and the pressing member rotates relative to the sleeve member to switch the positioning pin into the second slot.

[0008] In one embodiment of this invention, the first slot and the second slot are notches formed by extending along the peripheral wall of the sleeve towards the opening.

[0009] In one embodiment of this invention, the pressing member has a radial through hole, a positioning pin passes through the radial through hole, and at least a portion of the positioning pin protrudes from the pressing member.

[0010] In one embodiment of this invention, the pressing member also has a mounting hole for accommodating the elastic member.

[0011] In one embodiment of this invention, the sleeve has a protrusion within the accommodating space. When the pressing member is inserted into the sleeve, one end of the elastic member is fitted onto the protrusion.

[0012] In one embodiment of this invention, a stop is formed on the peripheral wall of the sleeve between the first and second slots. When the positioning pin disengages from the first slot, it abuts against the stop and slides relative to the stop to guide the pressing member to rotate until the positioning pin is engaged in the second slot.

[0013] In one embodiment of this invention, the positioning shaft structure further includes a transmission member. The pressing member has a neck with a non-circular cross-section in the direction perpendicular to the axial direction. The transmission member has a connecting hole, and the shape of the connecting hole corresponds to the shape of the non-circular cross-section. The transmission member is fitted onto the neck through the connecting hole to form an interference fit, so that the transmission member and the pressing member rotate synchronously.

[0014] In one embodiment of this invention, the transmission component is fixed to the first component, and the sleeve component is fixed to the second component. The first component is the upper cover of the electronic device, and the second component is the lower shell of the electronic device. By switching the position of the positioning pin between the first and second slots, the upper cover is fixed at different unfolding angles relative to the lower shell.

[0015] One of the beneficial effects of this invention is that the positioning shaft structure provided by this invention, through the axial displacement and circumferential rotation of the pressing component relative to the sleeve component, combined with the switching of the positioning pin between the first and second slots, can achieve a stable segmented positioning effect. Compared with traditional shafts that rely solely on friction, this invention uses the physical interference of the positioning pin and the slots for mechanical locking, which can effectively support the weight of heavier components, prevent angle slippage or loosening, significantly improve positioning reliability, and ensure that the device can accurately and stably maintain the preset angle in actual use.

[0016] To gain a better understanding of the features and technical content of this work, please refer to the following detailed description and illustrations. However, the illustrations provided are for reference and illustration only and are not intended to limit this work. Simple Explanation of the Diagram

[0017] Figure 1 is a schematic diagram of the positioning pivot structure of this invention.

[0018] Figure 2 is an exploded view of the elastic component, pressing component, positioning pin, and transmission component of the positioning shaft structure of this invention.

[0019] Figure 3 is a schematic diagram of the sleeve component of the positioning shaft structure of this invention.

[0020] Figure 4 is another schematic diagram of the sleeve component of the positioning shaft structure of this invention.

[0021] Figure 5 is a schematic diagram of the positioning pivot structure of this invention applied to a flip-up electronic device.

[0022] Figure 6 is another schematic diagram of the positioning pivot structure of this invention applied to a flip-up electronic device. Implementation

[0023] The following specific embodiments illustrate the implementation methods disclosed in this invention. Those skilled in the art can understand the advantages and effects of this invention from the content disclosed in this specification. This invention can be implemented or applied through other different specific embodiments, and the details in this specification can also be modified and changed based on different viewpoints and applications without departing from the concept of this invention. Furthermore, the accompanying drawings are for simple illustration only and are not depictions of actual dimensions, as stated in advance. The following embodiments will further describe the relevant technical content of this invention in detail, but the disclosed content is not intended to limit the scope of protection of this invention. Additionally, it should be understood that although terms such as "first," "second," and "third" may be used herein to describe various elements, these elements should not be limited by these terms. These terms are mainly used to distinguish one element from another. Furthermore, the term "or" used herein may, depending on the actual situation, include any combination of one or more of the associated listed items.

[0024] Referring to Figures 1 to 4, Figure 1 is a schematic diagram of the positioning shaft structure of this invention, Figure 2 is an exploded view of the elastic element, pressing element, positioning pin, and transmission element of the positioning shaft structure of this invention, and Figures 3 and 4 are schematic diagrams of the sleeve component of the positioning shaft structure of this invention. An embodiment of this invention provides a positioning shaft structure M, which includes: a sleeve component 1, an elastic element 2, a pressing element 3, a positioning pin 4, and a transmission element 5.

[0025] As shown in Figures 3 and 4, the sleeve 1 has an internal accommodating space C and an opening 10 communicating with the accommodating space C. The peripheral wall 11 of the sleeve 1 has a first groove 111 and a second groove 112 that communicate with each other. The first groove 111 and the second groove 112 are notches formed by extending along the peripheral wall 11 of the sleeve 1 toward the opening 10 (extending in a direction N1 parallel to the axial direction of the sleeve 1). A stop 12 is formed between the first groove 111 and the second groove 112 in the peripheral wall 11.

[0026] As shown in Figure 3, an opening 10 is formed at one end of the sleeve 1, and a connecting portion 13 is provided at the other end of the sleeve 1 (the end opposite to the opening 10). In addition, the sleeve 1 is provided with a protrusion 14, which is located within the accommodating space C.

[0027] As shown in Figure 2, the pressing member 3 includes a head 31, a body 32, and a neck 33. The neck 33 is located between the head 31 and the body 32, connecting the two parts. The body 32 has a mounting hole 322 at the end opposite to the end connected to the neck 33, for the elastic member 2 to be disposed therein. Furthermore, the pressing member 3 also has a radial through hole 321 on the body 32. The radial through hole 321 extends through the body 32 in the radial direction and is mainly for the insertion of the positioning pin 4.

[0028] The transmission member 5 is disposed on the neck 33 of the pressing member 3. Specifically, the neck 33 has a non-circular cross-section in the vertical axial direction N1. The transmission member 5 has a connecting hole 50, the outline shape of which corresponds to the shape of the non-circular cross-section. In one embodiment, the outline shape of the connecting hole 50 is polygonal. Thus, the transmission member 5 can be fitted onto the neck 33 through the connecting hole 50 to form an interference fit, enabling the transmission member 5 and the pressing member 3 to rotate synchronously.

[0029] As shown in Figures 1 to 4, the assembly of the positioning shaft structure M will be described below. First, the transmission component 5 is fitted onto the neck 33 of the pressing component 3, positioning the transmission component 5 on the outer periphery of the neck 33. Next, the elastic component 2 is inserted into the mounting hole 322 formed in the body 32 of the pressing component 3, ensuring that the elastic component 2 is confined within the mounting hole 322 and does not detach. Subsequently, the assembled pressing component 3, together with the elastic component 2, is inserted and assembled into the sleeve component 1.

[0030] Specifically, the pressing member 3 is inserted into the sleeve member 1 with the end equipped with the elastic member 2 facing towards it. The body 32 of the pressing member 3, together with the elastic member 2, extends into the receiving space C formed inside the sleeve member 1 through the opening 10 of the sleeve member 1. Conversely, the head 31 and neck 33 of the pressing member 3 are located outside the sleeve member 1 and exposed for subsequent operation or pressing.

[0031] In other words, after the pressing member 3 is fully inserted into the sleeve member 1, the elastic member 2 enters the receiving space C. One end of the elastic member 2 is fitted onto and abuts against the protrusion 14 inside the sleeve member 1, so that the elastic member 2 can be positioned and supported by the protrusion 14; the other end of the elastic member 2 abuts against the pressing member 3. Thus, when the pressing member 3 is pressed by an external force and undergoes axial displacement (see axial direction N1 in Figure 1) relative to the sleeve member 1, the elastic member 2 is compressed and provides a restoring force to push the pressing member 3 back to its original position after the external force is released, thereby forming the elastic recovery and positioning effect required by the positioning pivot structure M.

[0032] Furthermore, when the pressing member 3 is assembled and positioned inside the sleeve member 1, the radial through hole 321 formed on its body 32 will correspond to and be exposed in the first slot 111 or the second slot 112 of the sleeve member 1. At this time, the positioning pin 4 can be inserted from the outside of the sleeve member 1 through the first slot 111 or the second slot 112 and inserted into the radial through hole 321. In one embodiment, the positioning pin 4 may include a locking part 41 and an insertion part 42. The positioning pin 4 is inserted into the radial through hole 321 through its insertion part 42, while the locking part 41 protrudes from the pressing member 3. By the locking part 41 of the positioning pin 4 protruding from the pressing member 3 cooperating with the groove structure of the first slot 111 or the second slot 112, the pressing member 3 is limited when it rotates circumferentially (see circumferential direction N2 in FIG. 1) relative to the sleeve member 1, thereby limiting its rotation range.

[0033] Referring to Figures 5 and 6, which are schematic diagrams illustrating the application of the positioning pivot structure of this invention in a flip-up device, in one embodiment, the flip-up device may include a first component D1 and a second component D2. The first component D1 is pivotally connected to the second component D2 via two positioning pivot structures M, enabling the first component D1 to flip relative to the second component D2. For example, the flip-up device may be a teleprompter, but this invention is not limited thereto. Figure 5 shows the flip-up device in an open state, while Figure 6 shows the flip-up device in a closed state.

[0034] Please refer to Figures 5 and 6, and also refer to Figures 1 to 4. The following will explain the changes in motion and positioning relationship of the positioning pivot structure M of this invention when applied to the above-mentioned flip-type electronic device (taking a word reader as an example) as the first component D1 flips and opens relative to the second component D2.

[0035] The first component D1 is, for example, the top cover of the electronic device, and the second component D2 is, for example, the bottom shell of the electronic device. A positioning pivot structure M is disposed between the first component D1 and the second component D2. The transmission component 5 can be fixedly disposed on the first component D1; the sleeve component 1 is fixed to the second component D2 via its connecting portion 13. The positioning pin 4 can switch positions between the first slot 111 and the second slot 112 on the peripheral wall 11, allowing the first component D1 to be stably positioned relative to the second component D2 at different unfolding angles.

[0036] For example, in an initial mode (e.g., the open state as shown in Figure 5, or the closed state as shown in Figure 6), when the pressing member 3 is not pressed by an external force, the pressing member 3 is maintained in a positioning position by the elastic restoring force of the elastic member 2. In this state, the locking part 41 of the positioning pin 4 is engaged in the first locking groove 111 of the sleeve member 1, thereby restricting the circumferential rotation of the pressing member 3 relative to the sleeve member 1, so that the first component D1 is stably maintained at a predetermined angle relative to the second component D2.

[0037] When the user applies an external force to the head 31 of the pressing member 3, the pressing member 3 moves inward relative to the sleeve member 1 along the axial direction N1 (as shown in Figure 1), compressing the elastic member 2. Simultaneously, under the continuous action of the external force, the pressing member 3 rotates relative to the sleeve member 1 along the circumferential direction N2, causing the locking part 41 of the positioning pin 4 to disengage from the first slot 111. After the positioning pin 4 disengages from the first slot 111, the locking part 41 of the positioning pin 4 abuts against the stop 12 of the sleeve member 1. The positioning pin 4 is restricted by the structure of the stop 12 and slides against its surface, guiding the pressing member 3 to continuously rotate circumferentially. When the pressing member 3 rotates to a predetermined angle position, the positioning pin 4 aligns with the second slot 112 of the sleeve member 1.

[0038] Subsequently, when the user releases the external force, the restoring force provided by the elastic element 2 pushes the pressing element 3 to move in the opposite direction along the axial direction N1, causing the locking part 41 of the positioning pin 4 to engage in the second slot 112, thereby restricting the circumferential rotation of the pressing element 3 relative to the sleeve element 1 again. In this way, the first component D1 (top cover) can be stably positioned relative to the second component D2 (bottom shell) at another unfolding angle, completing the angle switching and positioning function of the positioning pivot structure M.

[0039] [Beneficial Effects of the Examples]

[0040] The positioning shaft structure provided in this invention achieves a stable segmented positioning effect through the axial displacement and circumferential rotation of the pressing component relative to the sleeve component, combined with the switching of the positioning pin between the first and second slots. Compared to traditional shafts that rely solely on friction, this invention uses the physical interference between the positioning pin and the slots for mechanical locking, effectively bearing the weight of heavier components and preventing angle slippage or loosening. This significantly improves positioning reliability and ensures that the device can accurately and stably maintain the preset angle during actual use.

[0041] The content disclosed above is only a preferred and feasible embodiment of this invention, and is not intended to limit the scope of the patent application of this invention. Therefore, all equivalent technical changes made using the contents of this invention's specification and drawings are included within the scope of the patent application of this invention.

[0042] M: Positioning pivot structure 1: Sleeve parts 10: Opening 11: Zhou Bi 111: First Card Slot 112: Second card slot 12: Block 13: Connecting part 14:convex part 2: Elastic component 3: Pressing component 31: Head 32: Torso 321: Radial through hole 322 mounting holes 33: Neck 4: Positioning pin 41: Fastening section 42: Insertion section 5: Transmission components 50: Connecting hole C: Storage space N1: Axial direction N2: Circumferential direction D1: First component D2: Second component

Claims

1. A positioning pivot structure, comprising: A cylindrical sleeve has an internal accommodating space and an opening communicating with the accommodating space. The peripheral wall of the sleeve is provided with a first slot and a second slot communicating with each other. An elastic member is disposed in the accommodating space of the sleeve. A pressing member is inserted into the sleeve through the opening and abuts against the elastic member. The pressing member is used to move axially upward relative to the sleeve and rotate circumferentially upward. A positioning pin is disposed on the pressing member, and at least a portion of the positioning pin protrudes from the sleeve and cooperates with the first slot and the second slot.

2. The positioning pivot structure as described in claim 1, wherein, When the pressing element is not pressed, it is driven by the elastic force of the elastic element, causing the positioning pin to engage in the first slot to restrict the rotation of the pressing element.

3. The positioning pivot structure as described in claim 2, wherein, When the pressing member is pressed by an external force and moves along the axial direction and rotates along the circumferential direction, the positioning pin is disengaged from the first slot, and the pressing member rotates relative to the sleeve to switch the positioning pin into the second slot.

4. The positioning pivot structure as described in claim 1, wherein, The first slot and the second slot are notches formed by extending along the peripheral wall of the sleeve towards the opening.

5. The positioning pivot structure as described in claim 1, wherein, The pressing element has a radial through hole, the locating pin passes through the radial through hole, and at least a portion of the locating pin protrudes from the pressing element.

6. The positioning pivot structure as described in claim 5, wherein, The pressing element also has a mounting hole for accommodating the elastic element.

7. The positioning pivot structure as described in claim 6, wherein, The sleeve has a protrusion within the accommodating space; when the pressing member is inserted into the sleeve, one end of the elastic member is fitted onto the protrusion.

8. The positioning pivot structure as described in claim 1, wherein, The peripheral wall of the sleeve forms a stop between the first slot and the second slot. When the positioning pin disengages from the first slot, it abuts against the stop and slides relative to the stop to guide the pressing member to rotate until the positioning pin is engaged in the second slot.

9. The positioning shaft structure as described in claim 1 further includes a transmission member, the pressing member having a neck having a non-circular cross-section in a direction perpendicular to the axial direction, the transmission member having a engagement hole, and the shape of the engagement hole corresponding to the shape of the non-circular cross-section; wherein, The transmission component is fitted onto the neck through the engagement hole and forms an interference fit so that the transmission component rotates synchronously with the pressing component.

10. The positioning pivot structure as described in claim 9, wherein, The transmission component is fixed to a first part, and the sleeve is fixed to a second part. The first part is the top cover of an electronic device, and the second part is the bottom shell of the electronic device. By switching the position of the positioning pin between the first slot and the second slot, the top cover is fixed at different unfolding angles relative to the bottom shell.

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