Pivot structure assembly and image forming equipment
By designing the structure of the slider component and the cam component, and utilizing different curved surfaces and the relative movement of the slider, the problem of severe wear in the low-angle range of the existing pivot structure was solved, thus improving the durability and stability of the pivot structure.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JUJIA UNITED TECHNOLOGY CO LTD
- Filing Date
- 2025-06-13
- Publication Date
- 2026-04-28
AI Technical Summary
In the long-term use of existing pivot structures, the limited contact area between the sliding block and the cam leads to friction and stress concentration, affecting durability and support stability, especially with severe wear in the low-angle range.
Design a pivot structure assembly that, through the structural design of the slider component and cam component, utilizes different curved surfaces and the relative movement of the slider to disperse stress and friction, reduce wear, and improve durability.
It effectively disperses the stress and friction between the cam and the slider, reduces wear, and improves the service life and stability of the pivot structure.
Smart Images
Figure CN224174887U_ABST
Abstract
Description
Technical Field
[0001] This application relates to office equipment, and more specifically, to a pivot structure assembly and an image forming device. Background Technology
[0002] Currently, the pivot structure of the automatic document feeder (ADF) of various office equipment, such as multifunctional office devices, multifunctional product / printer / peripheral (MFP), fax machines, scanners, or copiers, usually has a multi-angle support function (free stop angle) to ensure that the device cover can stay at any angle and will not close accidentally due to external force or gravity.
[0003] Existing pivot structures typically include a frame, a cam pivotally connected to the side edge of the frame, a sliding block disposed within the frame, and an elastic component disposed at the bottom of the sliding block. The cam abuts against the sliding block; when the cam rotates, it drives the sliding block to move vertically, compressing the elastic component. This allows the elastic restoring force provided by the elastic component to achieve multi-angle stable support.
[0004] However, since the sliding block and the cam interact only through a limited contact area, they are prone to wear due to friction and stress concentration during long-term operation, thus affecting the durability of the pivot mechanism. In particular, when the device cover is maintained within a low angle range, the compression of the elastic component increases, causing the contact area between the sliding block and the cam to bear greater pressure and become more susceptible to wear, thereby affecting the support stability and making it impossible to effectively maintain the opening and closing angle of the pivot mechanism.
[0005] Therefore, how to effectively distribute the stress between the sliding block and the cam to reduce wear and improve the service life of the pivot structure is one of the issues that urgently need to be improved in this field. Utility Model Content
[0006] This application provides a pivot structure assembly that, through the structural design of the slider component and the cam component, disperses the stress and friction force borne by the contact area between the cam and the slider, and can further reduce the wear of the pivot structure assembly when it is in a low-angle state, thereby improving the durability and ease of use of the pivot structure assembly.
[0007] In a first aspect, embodiments of this application provide a pivot structure assembly, comprising: a housing, a slider component, and a cam component.
[0008] The outer casing includes a housing that defines an accommodating space. A slider component is disposed within the accommodating space and includes a main slider, a secondary slider, a main elastic element, and a secondary elastic element. One end of the main elastic element is disposed at the bottom of the housing, and the main slider is disposed at the other end of the main elastic element. One end of the secondary elastic element is disposed at the bottom of the housing, and the secondary slider is disposed at the other end of the secondary elastic element and is movably fitted into the main slider. The cam component includes a pivot, a plate, and a cam. The plate is pivotally connected to the side of the housing via the pivot. The cam is disposed on the side of the plate facing the accommodating space and abuts against the main slider and the secondary slider. The area where the cam abuts against the main slider and the secondary slider forms a first curved surface and a second curved surface.
[0009] The cam abuts against the main slider with the first curved surface, and the cam abuts against the secondary slider with either the first curved surface or the second curved surface.
[0010] In some embodiments of this application, the second curved surface protrudes beyond the first curved surface, and the extension direction of the plate and the plane direction together define an angle. When the angle is greater than a preset angle, the cam abuts against the secondary slider with the first curved surface. When the angle is less than or equal to the preset angle, the cam abuts against the secondary slider with the second curved surface.
[0011] In some embodiments of this application, the main slider defines a fitting space and an opening, and has a main protrusion, with the opening recessed at the position of the main protrusion. The secondary slider is accommodated in the fitting space and has a secondary protrusion protruding from the opening.
[0012] In some embodiments of this application, the opening extends to a portion of the top surface of the main slider, causing the top surface of the secondary slider to protrude from the opening.
[0013] In some embodiments of this application, the main protrusion forms an abutment portion at the periphery of the through-hole, and a portion of the top surface of the secondary slider abuts against the abutment portion.
[0014] In some embodiments of this application, the pivot structure assembly includes at least one cushioning elastic element, with both ends of the at least one cushioning elastic element connected to the housing adjacent to the pivot and the plate side away from the pivot, respectively.
[0015] In some embodiments of this application, the slider component includes a plurality of main elastic elements, the secondary elastic elements are disposed between the plurality of main elastic elements, the housing defines a secondary chamber and a plurality of main chambers, the main chambers are respectively used to accommodate each main elastic element, and the secondary chambers are located between the main chambers and are used to accommodate the secondary elastic elements.
[0016] In some embodiments of this application, the second curved surface protrudes beyond the first curved surface, and the extension direction of the plate body and the plane direction together define an angle. When the angle is greater than a preset angle, the cam abuts against the main slider and the secondary slider with the first curved surface, and the contact areas of the secondary slider and the main slider with the cam are flush with the vertical direction. When the angle is less than or equal to the preset angle, the cam abuts against the main slider with the first curved surface and the cam abuts against the secondary slider with the second curved surface, causing the secondary slider and the main slider to move relative to each other in the vertical direction.
[0017] In some embodiments of this application, the main slider has a main protrusion, the secondary slider has a secondary protrusion, and the cam abuts against the main protrusion with the first curved surface and against the secondary protrusion with the first curved surface or the second curved surface. When the included angle is greater than the preset angle, the main protrusion and the secondary protrusion are flush with each other along the vertical direction. When the included angle is less than or equal to the preset angle, the secondary protrusion is closer to the bottom of the housing than the main protrusion along the vertical direction, and the compression of the secondary elastic member is greater than the compression of the main elastic member.
[0018] Secondly, embodiments of this application provide an image forming apparatus that includes the pivot structure assembly as described above.
[0019] This application has at least the following beneficial effects: by utilizing the structural design of the cam having different curved surfaces and the secondary slider and the primary slider being able to move relative to each other, when the pivot structure assembly is in a low-angle state, the cam abuts against the secondary slider with the second curved surface, thereby causing the secondary elastic element to generate more compression compared to the primary elastic element, and the elastic support force provided by the secondary elastic element is also increased, which helps to further disperse the stress and friction applied by the cam to the slider component, thereby reducing the wear of the cam and the slider component. In addition to improving the effect of multi-angle support, it can also improve the durability and safety of the pivot structure assembly. Attached Figure Description
[0020] The above and other aspects, features, and advantages of certain embodiments of this application will become more apparent from the following description taken in conjunction with the accompanying drawings, wherein:
[0021] Figure 1A and 1BThese are perspective views of the pivot structure assembly of the first embodiment of this application from different angles.
[0022] Figure 2 This is an exploded view of the pivot structure assembly according to the first embodiment of this application.
[0023] Figure 3 This is a top view of the housing of the pivot structure assembly according to the first embodiment of this application.
[0024] Figure 4A This is a perspective view of the main slider and the secondary slider of the pivot structure assembly according to the first embodiment of this application.
[0025] Figure 4B and 4C These are exploded schematic diagrams of the main slider and secondary slider of the pivot structure assembly according to the first embodiment of this application from different perspectives.
[0026] Figure 5A This is a front sectional view of the pivot structure assembly of the first embodiment of this application, used to illustrate the implementation of its cam member having the maximum holding angle.
[0027] Figure 5B This is a side sectional view of the pivot structure assembly according to the first embodiment of this application, used to assist in... Figure 5A Explain its side view structure.
[0028] Figure 6A This is a front sectional view of the pivot structure assembly of the first embodiment of this application, used to illustrate an implementation in which the cam member retains an angle of 15 degrees.
[0029] Figure 6B This is a side sectional view of the pivot structure assembly according to the first embodiment of this application, used to assist in... Figure 6A Explain its side view structure.
[0030] Figure 7A This is a front sectional view of the pivot structure assembly of the first embodiment of this application, used to illustrate the implementation state in which the cam member is in a closed state.
[0031] Figure 7B This is a partial enlarged view of the pivot structure assembly of the first embodiment of this application, used to assist in understanding its structure. Figure 7A Explain the relative positions of the main slider and secondary slider of the pivot structure assembly with respect to other components.
[0032] Figure 7C This is a side sectional view of the pivot structure assembly according to the first embodiment of this application, used to assist in... Figure 7A Explain its side view structure.
[0033] Figure 8 This is a schematic diagram of a pivot structure assembly configured in an image forming device according to the first embodiment of this application.
[0034] Figure 9A This is a perspective view of the main slider and the secondary slider of the pivot structure assembly according to the second embodiment of this application.
[0035] Figure 9B and 9C This is an exploded view of the main slider and secondary slider of the pivot structure assembly of the second embodiment of this application from different perspectives.
[0036] Figure 10A and 10B This is a side view of the pivot structure assembly according to the third embodiment of this application, used to illustrate the implementation of its cam member in the maximum holding angle and closed state, respectively.
[0037] The following are explanations of some of the reference numerals in the accompanying drawings:
[0038] 100: Pivot structure assembly; 213: Through port;
[0039] 10: Outer shell; 214: Abutment part;
[0040] 11: Housing; 22: Secondary slider;
[0041] 12: Accommodation space; 220: Top surface;
[0042] 121: Main chamber; 221: Secondary convex portion;
[0043] 122: Secondary chamber; 23: Primary elastic element;
[0044] 13: Opening; 24: Secondary elastic element;
[0045] 141: Main positioning block; 30: Cam component;
[0046] 142: Secondary positioning block; 31: Pivot;
[0047] 20: Slider component; 32: Plate;
[0048] 21: Main slider; 33: Cam;
[0049] 210: Top surface; 331: First curved surface;
[0050] 211: Main convex part; 332: Second curved surface;
[0051] 212: Fitting space; 40: Buffer elastic element;
[0052] 200: Image forming equipment; X: Planar direction;
[0053] Y: Vertical direction; θ: Angle. Detailed Implementation
[0054] In the following sections, embodiments of this application will be described in detail with reference to the accompanying drawings.
[0055] However, this application can be implemented in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided to make the application more thorough and complete, and to fully convey the concept of the application to those skilled in the art. In the various figures, all figures are exemplary illustrations of the application for clarity and ease of explanation and do not represent the actual size of the product. Furthermore, the dimensional proportions between components in the figures are not intended to limit the actual product of this application.
[0056] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of this application can be combined with each other, and any combination of features in different embodiments is also within the protection scope of this application. That is to say, the multiple embodiments described above can also be arbitrarily combined according to actual needs.
[0057] The above are merely some embodiments and implementation methods of this application. The scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.
[0058] This application provides a pivot structure assembly 100, suitable for configuration in, for example, Figure 8 The image forming device 200 shown is described. In one embodiment of this application, the image forming device 200 is equipped with a pivot structure assembly 100. The pivot structure assembly 100 is disposed on the paper feed device of the image forming device 200, and is used to enable the top cover of the image forming device 200 to have a multi-angle support (free stop angle) function. The image forming device 200 may be, for example, a multifunction office device, a multifunction printer, a fax machine, a scanner, or a copier, but is not limited thereto.
[0059] See Figure 1A , Figure 1B and Figure 2 The pivot structure assembly 100 of the first embodiment of this application includes: a housing 10, a slider member 20, and a cam member 30.
[0060] See also Figure 3The outer casing 10 includes a housing 11, which defines an accommodating space 12 and an opening 13, and includes a plurality of main positioning blocks 141 and secondary positioning blocks 142. The accommodating space 12 has a plurality of main chambers 121 and secondary chambers 122. The main positioning blocks 141 are disposed at the bottom of the housing 11 and located in the main chambers 121, and the secondary positioning blocks 142 are disposed at the bottom of the housing 11 and located in the secondary chambers 122. The formation position of the main chambers 121 and the number of main positioning blocks 141 correspond to the main elastic elements 23 of the slider member 20, and the formation position of the secondary chambers 122 and the number of secondary positioning blocks 142 correspond to the secondary elastic elements 24 of the slider member 20.
[0061] See Figure 2 and Figure 3 The slider component 20 is disposed in the accommodating space 12. The slider component 20 includes a main slider 21, a secondary slider 22, a plurality of main elastic elements 23, and a secondary elastic element 24. The plurality of main elastic elements 23 are respectively housed in the main chamber 121, and one end of each main elastic element 23 is disposed at the bottom of the housing 11 and connected to the corresponding main positioning block 141. The main slider 21 is disposed at the other end of the main elastic element 23. The secondary elastic element 24 is housed in the secondary chamber 122 and is located between the plurality of main elastic elements 23. One end of each secondary elastic element 24 is disposed at the bottom of the housing 11 and connected to the secondary positioning block 142. The secondary slider 22 is disposed at the other end of the secondary elastic element 24 and is movably fitted into the main slider 21.
[0062] See also Figures 4A to 4C and Figure 5A , Figure 5A For the corresponding Figure 1AThe cross-sectional structure of the facet AA is shown in the diagram. More specifically, the main slider 21 defines a fitting space 212 and an opening 213, and has a main protrusion 211. The opening 213 is recessed at the position of the main protrusion 211, and the main protrusion 211 forms an abutment 214 at the periphery of the opening 213. The secondary slider 22 is accommodated in the fitting space 212 and has a secondary protrusion 221 protruding from the opening 213, and the top surface 220 of the secondary slider 22 abuts against the abutment 214 of the main slider 21. Therefore, when the main slider 21 and the secondary slider 22 move relative to each other, the main slider 21 is used to limit the secondary slider 22, thereby preventing the secondary slider 22 from disengaging due to the elastic support force of the secondary elastic member 24. Furthermore, the structural arrangement of the main chamber 121 and the secondary chamber 122 can also limit the extension and retraction directions of the main elastic member 23 and the secondary elastic member 24 respectively, so that the main elastic member 23 and the secondary elastic member 24 can move along the vertical direction Y without disengaging.
[0063] In the first embodiment, taking the slider component 20 having two main elastic elements 23 and a secondary elastic element 24 disposed between the two main elastic elements 23 as an example, the force on the main slider 21 along the vertical direction Y is made more even, avoiding skewing during movement or stress concentration in local areas. However, in actual implementation, the number and arrangement of the main elastic elements 23 and the secondary elastic elements 24 can vary according to actual needs and are not limited to the foregoing example.
[0064] See Figure 1 and... Figure 2 The cam component 30 includes a pivot 31, a plate 32, and a cam 33. The plate 32 is pivotally connected to the side of the housing 11 via the pivot 31. The cam 33 is connected to the plate 32 and disposed on the side of the plate 32 facing the accommodating space 12, and the cam 33 abuts against the main slider 21 and the secondary slider 22. The area of the cam 33 abutting against the main slider 21 and the secondary slider 22 forms a first curved surface 331 and a second curved surface 332, and the second curved surface 332 protrudes from the first curved surface 331.
[0065] Referring to Figures 5 to 7, the extension direction of the plate 32 and the planar direction X together define an angle θ. The cam 33 abuts against the main slider with the first curved surface 331. Depending on the angle θ, the cam 33 abuts against the secondary slider 22 with the first curved surface 331 or the second curved surface 332.
[0066] See Figure 5A and Figure 5B , Figure 5A and Figure 5B Corresponding to Figure 1AAA and the secant line in the middle Figure 1B The cross-sectional view of the facet BB in the diagram represents the structural state of the pivot structure assembly 100 in a high-angle state. Specifically, when the included angle θ of the pivot structure assembly 100 is greater than a preset angle and it is in a high-angle state, the cam 33 simultaneously abuts against the main convex portion 211 of the main slider 21 and the secondary convex portion 221 of the secondary slider 22 with the first curved surface 331. The contact areas of the main convex portion 211 and the secondary convex portion 221 with the cam 33 are flush with the vertical direction Y. At this time, both the main slider 21 and the secondary slider 22 are subjected to force on the first curved surface 331 and simultaneously receive elastic support force from the main elastic element 23 and the secondary elastic element 24. This allows the stress borne by the cam 33 and the slider component 20 to be evenly distributed, thereby reducing wear and friction between the cam 33 and the slider component 20.
[0067] In the first embodiment, the preset angle is taken as 15 degrees, but it is not limited to this. And less than the preset angle means the included angle range in which the pivot structure component 100 is in the low angle state.
[0068] See Figure 6A and Figure 6B , Figure 6A and Figure 6B Corresponding to Figure 1A AA and the secant line in the middle Figure 1B The cross-sectional view of the facet BB in the figure shows the structural state of the pivot structure assembly 100 in a low-angle state. When the included angle θ is less than or equal to the preset angle, the cam 33 abuts against the main convex portion 211 of the main slider 21 with the first curved surface 331, and the cam 33 abuts against the secondary convex portion 221 of the secondary slider 22 with the second curved surface 332. Since the second curved surface 332 protrudes from the first curved surface 331, the secondary slider 22 and the main slider 21 can move relative to each other, so that the secondary convex portion 221 is closer to the bottom of the housing 11 along the vertical direction Y than the main convex portion 211. This results in the compression of the secondary elastic member 24 being greater than the compression of the main elastic member 23. At this time, the secondary slider 22 receives a larger elastic support force, which can further disperse the stress and friction between the cam 33 and the slider member 20, thereby improving the problem of increased wear when the pivot structure assembly 100 is in a low-angle state.
[0069] See Figure 7A , Figure 7B and Figure 7C , Figure 7A and Figure 7C Corresponding to Figure 1AAA and the secant line in the middle Figure 1B The cross-sectional view of the facet BB in the diagram represents the fully closed structure of the pivot structure assembly 100. Further, when the pivot structure assembly 100 is fully closed to an included angle θ of 0 degrees, as the plate 32 rotates, the cam 33 drives the main slider 21 and the secondary slider 22 to move further towards the bottom of the housing 11, further increasing the compression of the main elastic element 23 and the secondary elastic element 24. At this time, the secondary slider 22, pressed by the second curved surface 332, is closer to the bottom of the housing 11 relative to the main slider 21. The elastic support force fed back from the secondary elastic element 24 to the secondary slider 22 also increases accordingly, thus maximizing the distribution of stress and friction between the cam 33 and the slider component 20, avoiding stress concentration in certain areas, and effectively reducing wear between the cam 33 and the slider component 20.
[0070] See Figure 9A , Figure 9B and Figure 9C The main slider 21 and secondary slider 22 are the pivot structure assembly 100 of the second embodiment of this application. In the second embodiment, the opening 213 of the main slider 21 extends from the main protrusion 211 to a portion of the top surface 210 of the main slider 21. Therefore, when the secondary slider 22 is accommodated in the fitting space 212, the top surface 220 of the secondary slider 22 will be exposed from the opening 213. In the second embodiment, the main protrusion 211 abuts against the periphery of the opening 213 to form abutment 214, and the portion of the top surface 220 of the secondary slider 22 abuts against the abutment 214. Therefore, when the main slider 21 and the secondary slider 22 move relative to each other along the vertical direction Y, the abutment 214 can limit the secondary slider 22, preventing the secondary slider 22 from loosening from the opening 213 and detaching from the slider member 20 during operation.
[0071] See Figure 10A and Figure 10B The pivot structure assembly 100 of the third embodiment of this application is generally similar in structure to the pivot structure assembly 100 of the first embodiment, except that the pivot structure assembly 100 of the third embodiment further includes at least one cushioning elastic element 40. The two ends of each cushioning elastic element 40 are respectively connected to the housing 11 adjacent to the pivot 31 and to the side of the plate 32 away from the pivot 31. In the third embodiment, it is taken as an example that the pivot structure assembly 100 is configured with two cushioning elastic elements 40, respectively disposed on opposite sides of the housing 10. However, the number of cushioning elastic elements 40 may vary depending on actual needs and is not limited to the foregoing example.
[0072] See Figure 10A Furthermore, when the buffer elastic element 40 is located on the side of the pivot 31 away from the cam 33, the buffer elastic element 40 provides a torque force relative to the pivot 31 that is opposite to the weight of the cam 33. Therefore, the buffer elastic element 40 can provide the cam 33 with an upward component force along the vertical direction Y, so that the cam 33 is not affected by its own weight or the external environment and will not fall. This is beneficial for the stable stopping of the cam component 30 and makes the pivot structure assembly 100 have a better multi-angle support effect, thereby improving the safety of the pivot structure assembly 100 in use.
[0073] See Figure 10B When the pivot structure assembly 100 is fully closed, the buffer elastic element 40 is located on the side of the pivot 31 closer to the cam 33. At this time, the buffer elastic element 40 is stretched, thereby providing the cam 33 with a downward component force along the vertical direction Y. Therefore, when the pivot structure assembly 100 is configured in an image forming device 200 (e.g., Figure 8 When the image forming device 200 is fully closed (as shown), the buffer elastic element 40 helps the top cover of the image forming device 200 to clamp the paper downwards, thereby improving the quality of image forming.
[0074] In summary, the pivot structure assembly 100 of this application, through the contact area of the cam 33 abutting against the slider member 20, forms a first curved surface 331 and a second curved surface 332, and the main slider 21 and the secondary slider 22 are designed to be relatively displaceable, so that when the pivot structure assembly 100 is in a low-angle state, the stress and friction generated by the cam 33 abutting against the slider member 20 can be further distributed through the action between the second curved surface 332 and the secondary slider 22 and the secondary elastic member 24, thereby reducing wear and improving the durability of the product, thus achieving the effect intended by this application.
Claims
1. A pivot structure assembly, characterized in that, Include: The outer casing includes a housing that defines an accommodating space; A slider component, disposed in the accommodating space, includes a main slider, a secondary slider, a main elastic element, and a secondary elastic element. One end of the main elastic element is disposed at the bottom of the housing, the main slider is disposed at the other end of the main elastic element, one end of the secondary elastic element is disposed at the bottom of the housing, and the secondary slider is disposed at the other end of the secondary elastic element and is relatively movable and fitted into the main slider. as well as A cam component includes a pivot, a plate, and a cam. The plate is pivotally connected to the side of the housing via the pivot. The cam is disposed on the side of the plate facing the accommodating space and abuts against the main slider and the secondary slider. The area where the cam abuts against the main slider and the secondary slider forms a first curved surface and a second curved surface. The cam abuts against the main slider with the first curved surface, and the cam abuts against the secondary slider with either the first curved surface or the second curved surface.
2. The pivot structure assembly as claimed in claim 1, characterized in that, The second curved surface protrudes from the first curved surface. The extension direction of the plate and the plane direction together define an angle. When the angle is greater than a preset angle, the cam abuts against the secondary slider with the first curved surface. When the angle is less than or equal to the preset angle, the cam abuts against the secondary slider with the second curved surface.
3. The pivot structure assembly as claimed in claim 1, characterized in that, The main slider defines the fitting space and the opening, and has a main protrusion, with the opening recessed at the position of the main protrusion. The secondary slider is accommodated in the fitting space and has a secondary protrusion protruding from the opening.
4. The pivot structure assembly as claimed in claim 3, characterized in that, The opening extends to a portion of the top surface of the main slider, causing the top surface of the secondary slider to protrude from the opening.
5. The pivot structure assembly as claimed in claim 3, characterized in that, The main protrusion forms abutment at the periphery of the opening, and a portion of the top surface of the secondary slider abuts against the abutment.
6. The pivot structure assembly as claimed in claim 1, characterized in that, It includes at least one cushioning elastic element, with both ends of the at least one cushioning elastic element connected to the housing adjacent to the pivot and the plate body away from the pivot, respectively.
7. The pivot structure assembly as claimed in claim 1, characterized in that, The slider component includes multiple main elastic elements, and the secondary elastic elements are disposed between the multiple main elastic elements. The housing defines a secondary chamber and a plurality of main chambers. The main chambers are used to accommodate each main elastic element, and the secondary chambers are located between the main chambers to accommodate the secondary elastic elements.
8. The pivot structure assembly as claimed in claim 1, characterized in that, The second curved surface protrudes from the first curved surface. The extension direction of the plate and the plane direction together define an angle. When the angle is greater than a preset angle, the cam abuts against the main slider and the secondary slider with the first curved surface. The contact areas of the secondary slider and the main slider with the cam are flush with the vertical direction. When the angle is less than or equal to the preset angle, the cam abuts against the main slider with the first curved surface and against the secondary slider with the second curved surface, causing the secondary slider and the main slider to move relative to each other in the vertical direction.
9. The pivot structure assembly as claimed in claim 8, characterized in that, The main slider has a main convex portion, the secondary slider has a secondary convex portion, and the cam abuts against the main convex portion with the first curved surface and against the secondary convex portion with the first curved surface or the second curved surface. When the included angle is greater than the preset angle, the main convex portion and the secondary convex portion are flush with each other along the vertical direction. When the included angle is less than or equal to the preset angle, the secondary convex portion is closer to the bottom of the housing than the main convex portion along the vertical direction, and the compression amount of the secondary elastic element is greater than the compression amount of the main elastic element.
10. An image forming device, characterized in that, It is equipped with a pivot structure assembly as described in any one of claims 1 to 9.