Image forming device and pivot structure thereof

Abstract

The utility model relates to an image forming device and a pivot structure thereof, the pivot structure comprises a fixed seat, a sliding block, a rotating seat and an oil scraping component, and the fixed seat is provided with a containing cavity; the sliding block is arranged in the accommodating cavity; the rotating seat is rotatably connected with the fixed seat and comprises a cam, and the cam performs contact actuation corresponding to the sliding block; the oil scraping component is arranged on the sliding block and corresponds to the cam; when the rotating seat is rotated upwards, oil on the surface of the cam is scraped off through the oil scraping component. Therefore, the lubricating grease can be retained between the cam and the sliding block, and all the elements are fully lubricated, so that the friction loss is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of image forming device technology, especially refers to a kind of image forming device and its pivot structure. BACKGROUND

[0002] The multifunctional digital composite all-in-one machine (Multi Function Product / Printer / Peripheral, MFP), copying machine (Copy Machine), scanner (Scanner) and other products on the market are all equipped with paper feeding module (Automatic Document Feeder, ADF), in order to consider the convenience of users when using, the hinge module (Hinge Module) mostly has multi-angle support function (Free Stop Angle), and the design principle is to use a cam shaft and a slider to contact, the slider is installed in a frame, the block body bottom is provided with a compression spring, the relative height of the slider is changed by cam rotation, and then the spring is compressed and support force is generated.

[0003] Because the frame, cam shaft, slider and spring will generate a part of horizontal lateral component force under the action of each other, when the frame bears a large lateral external force for a long time, the frame is easy to cause external deformation, and the support force is reduced, and even the function loss problem occurs due to insufficient support force. In addition, since the hinge cam shaft is combined with the plastic frame through a metal shaft, the combination is easy to be brittle and broken due to long-term stress, aging and other factors, which increases unnecessary cost and maintenance cost.

[0004] In addition, in order to achieve the purpose of single-handed operation of users, it is expected that the hinge of the paper feeding module can maintain the angle of the paper feeding module at the moment when it stops under the action of external force at a specific angle (generally between 10 degrees and 65 degrees), so the required spring force must be relatively high, but the slider only maintains contact and friction with the cam in a relatively small area for a long time, especially under the condition that the spring compression amount and spring force are relatively high at low angle, which causes the slider to be worn in the relatively small area, and then affects the angle of the automatic paper feeding module when it is opened and stopped, especially the fingers of the user may be crushed due to the sliding of the paper feeding module at low angle. SUMMARY

[0005] The utility model discloses a kind of purposes, to provide a kind of image forming device and its pivot structure, it can keep lubricating grease between cam and slider, and each element is fully lubricated to reduce friction loss.

[0006] In order to achieve the above-mentioned purpose, the utility model provides a pivot structure, including a fixed seat, a sliding block, a rotating seat and at least one oil scraping component, the fixed seat has a cavity, the sliding block is arranged in the cavity, the rotating seat is rotatably connected with the fixed seat, the rotating seat includes a cam, the cam is in contact with the sliding block and is actuated, the oil scraping component is arranged in the sliding block and is arranged corresponding to the cam, wherein when the rotating seat is rotated upward, the oil on the surface of the cam is scraped off by the oil scraping component.

[0007] In order to achieve the above-mentioned purpose, the utility model provides a pivot structure, including a fixed seat, a sliding block, a rotating seat and at least one oil scraping component, the fixed seat has a cavity, the sliding block is arranged in the cavity, the rotating seat is rotatably connected with the fixed seat, the rotating seat includes a cam, the cam is in contact with the sliding block and is actuated, the oil scraping component is arranged in the sliding block and is arranged corresponding to the cam, wherein when the rotating seat is rotated upward, the oil on the surface of the cam is scraped off by the oil scraping component.

[0008] In an embodiment, the oil scraping component includes an oil scraping plate and at least one spring, the sliding block is provided with a container groove, and the oil scraping plate and the spring are arranged in the container groove.

[0009] In an embodiment, the spring is elastically clamped between the oil scraping plate and the sliding block, so that the oil scraping plate can move between a first position and a second position while following the rotation of the rotating seat and continuously abutting against the cam.

[0010] In an embodiment, the spring is elastically clamped between the oil scraping plate and the sliding block, so that the oil scraping plate can move between a first position and a second position while following the rotation of the rotating seat and continuously abutting against the cam.

[0011] In an embodiment, the spring is elastically clamped between the oil scraping plate and the sliding block, so that the oil scraping plate can move between a first position and a second position while following the rotation of the rotating seat and continuously abutting against the cam.

[0012] In an embodiment, the surface of the cam is provided with at least one oil groove.

[0013] In an embodiment, the surface of the cam is provided with at least one oil groove.

[0014] In an embodiment, the sliding block is provided with a shaft hole, the rotating shaft component includes a rotating shaft and a plurality of fixed shaft sleeves, and the rotating shaft passes through the fixed shaft sleeves and penetrates the shaft hole.

[0015] In an embodiment, the sliding block is provided with a shaft hole, the rotating shaft component includes a rotating shaft and a plurality of fixed shaft sleeves, and the rotating shaft passes through the fixed shaft sleeves and penetrates the shaft hole.

[0016] In an embodiment, the slider is provided with a first accommodating groove and a second accommodating groove, the oil scraping member comprises a first oil scraping plate and a second oil scraping plate, the first oil scraping plate is arranged in the first accommodating groove, and the second oil scraping plate is arranged in the second accommodating groove.

[0017] In an embodiment, the cam comprises a first cam portion, a second cam portion and a first engaging portion between the first cam portion and the second cam portion, the shaft member comprises a second engaging portion, and the cam is driven in engagement with the second engaging portion through each first engaging portion.

[0018] In an embodiment, the cam comprises a first cam portion, a second cam portion and a first engaging portion between the first cam portion and the second cam portion, the shaft member comprises a second engaging portion, and the cam is driven in engagement with the second engaging portion through each first engaging portion.

[0019] In an embodiment, the slider is provided with an oil storage groove corresponding to the position of the second engaging portion, so as to lubricate the second engaging portion and each first engaging portion.

[0020] In an embodiment, the slider has an abutting strip, and the cam actuates the slider through the abutting strip.

[0021] In an embodiment, the utility model further comprises an elastic body, the elastic body is arranged in the accommodating cavity and is elastically clamped between the fixed seat and the slider.

[0022] The utility model also has the following effects: the spring is arranged between the slider and the oil scraping plate, when it is necessary to supplement oil, the oil can be injected by only pressing down the oil scraping plate. The oil groove of the cam can provide sufficient lubrication between the rotating element and the fixed element. The shaft sleeves are used to support the shaft member, which can shorten the span of the shaft and reduce the risk of deformation of the shaft due to stress. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a three-dimensional appearance view of the first embodiment of the utility model.

[0024] Figure 2 It is an exploded view of the first embodiment of the utility model.

[0025] Figure 3 It is a combination view of the slider, the oil scraping member and the shaft member of the first embodiment of the utility model.

[0026] Figure 4 It is an exploded view of the slider, the oil scraping member and the shaft member of the first embodiment of the utility model.

[0027] Figure 5The first embodiment of the utility model is the use state side view.

[0028] Figure 6 The Figure 5 6-6 section view of the first embodiment of the utility model.

[0029] Figure 7 The Figure 6 7-7 section view of the first embodiment of the utility model.

[0030] Figure 8 The maximum opening section view of the first embodiment of the utility model.

[0031] Figure 9 The second embodiment of the utility model is the three-dimensional appearance view.

[0032] Figure 10 The second embodiment of the utility model is the exploded view.

[0033] Figure 11 The second embodiment of the utility model is the slider, oil scraping member and rotating shaft member exploded view.

[0034] Figure 12 The third embodiment of the utility model is the three-dimensional appearance view.

[0035] Figure 13 The third embodiment of the utility model is the exploded view.

[0036] Figure 14 The third embodiment of the utility model is the slider, oil scraping member and rotating shaft member exploded view.

[0037] Figure 15 The fourth embodiment of the utility model is the slider and oil scraping member exploded view.

[0038] Among them, the reference sign is:

[0039] 1, 1A, 1B, 1C: pivot structure

[0040] 10: fixed seat

[0041] 11: cavity

[0042] 12: first shaft hole

[0043] 13: shaft

[0044] 20, 20A, 20B, 20C: slider

[0045] 21: shaft hole

[0046] 22: container groove

[0047] 23: oil storage groove

[0048] 24: first container groove

[0049] 25: Second container

[0050] 26: Connecting strip

[0051] 30, 30A, 30B: Rotary seat

[0052] 31, 31A, 31B: Cam

[0053] 311: Oil Ditch

[0054] 312: First cam section

[0055] 313: Second cam section

[0056] 314: Avoidance Groove

[0057] 315: First meshing part

[0058] 32: Second shaft hole

[0059] 40, 40A, 40B: Oil scraping components

[0060] 41: Oil scraper

[0061] 411: Positioning groove

[0062] 412: Positioning Post

[0063] 42: Spring

[0064] 43: First oil scraper

[0065] 44: Second oil scraper

[0066] 50, 50B: Rotating shaft components

[0067] 51: Shaft

[0068] 52: Fixed bushing

[0069] 53: Second meshing part

[0070] 60: Elastomer Detailed Implementation

[0071] The detailed description and technical content of this utility model are explained below with reference to the accompanying drawings. However, the accompanying drawings are provided for reference and illustration only and are not intended to limit this utility model.

[0072] Please see Figures 1 to 4 As shown, this utility model provides an image forming apparatus and its pivot structure 1. The pivot structure 1 of this embodiment mainly includes a fixed seat 10, a slider 20, a rotating seat 30 and at least one oil scraping component 40.

[0073] The fixed base 10 has a cavity 11, the slider 20 is movably arranged in the cavity 11, the rotating base 30 is rotatably connected to the fixed base 10, the rotating base 30 comprises a cam 31, the cam 31 is in contact with the slider 20 for actuation, and the oil scraping member 40 is arranged on the slider 20 and corresponds to the cam 31.

[0074] In an embodiment, the oil scraping member 40 mainly comprises an oil scraping plate 41 and at least one spring 42, the slider 20 is provided with a groove 22, and the oil scraping plate 41 and the spring 42 are arranged in the groove 22.

[0075] In an embodiment, the spring 42 is a plurality of springs, the oil scraping plate 41 is provided with a plurality of positioning grooves 411, and each spring 42 is arranged in each positioning groove 411.

[0076] In an embodiment, each positioning groove 411 of the oil scraping plate 41 is provided with a positioning column 412, and each positioning column 412 penetrates each spring 42.

[0077] In an embodiment, the surface of the cam 31 is provided with at least one oil groove 311, and the oil groove 311 in this embodiment is a plurality of oil grooves. The oil groove 311 can be used to store oil, so as to provide sufficient lubrication between the cam 31 and the slider 20.

[0078] In an embodiment, the pivot structure 1 further comprises a rotating shaft member 50, the rotating shaft member 50 penetrates the slider 20, and the slider 20 is actuated by the cam 31 through the rotating shaft member 50.

[0079] In an embodiment, the slider 20 is provided with a shaft hole 21, the rotating shaft member 50 comprises a rotating shaft 51 and two fixed shaft sleeves 52, the rotating shaft 51 penetrates the shaft hole 21 through the fixed shaft sleeves 52, so that the rotating shaft 51 can rotate relative to the slider 20. Specifically, the fixed base 10 is a rectangular box body, a first shaft hole 12 is arranged at the upper portion of the fixed base 10, a second shaft hole 32 is arranged at the rotating base 30, and the first shaft hole 12 and the second shaft hole 32 are provided for penetrating a shaft rod 13 to be connected, so that the rotating base 30 can be rotated relative to the fixed base 10.

[0080] In an embodiment, the slider 20 is provided with an oil storage groove 23 corresponding to the position of the rotating shaft 51, so as to store oil for lubricating the rotating shaft 51 and the cam 31.

[0081] In an embodiment, an elastic body 60 is further included, the elastic body 60 is arranged in the cavity 11 and is elastically clamped between the fixed base 10 and the slider 20.

[0082] In an embodiment, the elastic body 60 can be a compression spring, and the number of the elastic body 60 can be one or more than two (inclusive). The fixed base 10 has a bottom plate 14, and each elastic body 60 is elastically clamped between the bottom plate 14 of the fixed base 10 and the slider 20.

[0083] Please see Figures 5 to 8 As shown, when turned on, the rotating seat 30 is rotated upwards around the shaft 13. Through the elastic force of the elastic body 60, the cam 31 and the rotating shaft 51 of the rotating shaft component 50 remain in contact, causing the slider 20 to move upwards towards the fixed seat 10. Furthermore, since each spring 42 is elastically held between the scraper plate 41 and the groove 22 of the slider 20, through the elastic force of each spring 42, the scraper plate 41 can follow the rotation of the rotating seat 30 and move between a first position and a second position (e.g., ...). Figure 7 and Figure 8 As shown), and continuously presses against the cam 31, thereby scraping off the oil on the surface of the cam 31 by the oil scraper 41.

[0084] Please see Figures 9 to 11 As shown, the pivot structure of this utility model can be in addition to the above-described embodiments, but it can also be as described in this embodiment. The difference between this embodiment and the previous embodiments is that the slider 20A of the pivot structure 1A in this embodiment is provided with a first receiving groove 24 and a second receiving groove 25. The oil scraping component 40A mainly includes a first oil scraping plate 43, a second oil scraping plate 44, and two springs 42. The first oil scraping plate 43 and one of the springs 42 are housed in the first receiving groove 24, and the second oil scraping plate 44 and the other spring 42 are housed in the second receiving groove 25. In addition, the first oil scraping plate 43 and the second oil scraping plate 44 may also include the positioning groove and positioning post of the previous embodiment to position the spring 42.

[0085] In one embodiment, the cam 31A mainly includes a first cam portion 312, a second cam portion 313 and a relief groove 314 between the first cam portion 312 and the second cam portion 313. The first oil scraper 43 is configured corresponding to the first cam portion 312 and the second oil scraper 44 is configured corresponding to the second cam portion 313.

[0086] In one embodiment, the rotating shaft component of this embodiment is the same as the rotating shaft component 50 of the first embodiment. A plurality of oil storage grooves 23 are provided at the position of the slider 20A corresponding to the rotating shaft 51. Each oil storage groove 23 is for lubrication of the rotating shaft 51 and the cam 31A.

[0087] In addition, it should be noted that in other embodiments, there may be two or more receiving grooves, two or more oil scrapers, two or more springs, and two or more cam portions.

[0088] Please see Figures 12 to 14As shown, the slider 20B of the pivot structure 1B of the present embodiment and the slider 20A of the second embodiment are substantially the same, and are provided with a first accommodating groove 24 and a second accommodating groove 25. The oil scraping member 40B mainly comprises a first oil scraping plate 43, a second oil scraping plate 44 and two springs 42. The first oil scraping plate 43 and one of the springs 42 are accommodated in the first accommodating groove 24, and the second oil scraping plate 44 and the other spring 42 are accommodated in the second accommodating groove 25. The cam 31B of the present embodiment mainly comprises a first cam portion 312, a second cam portion 313 and a plurality of first engaging portions 315 between the first cam portion 312 and the second cam portion 313. The rotating shaft member 50B further comprises a second engaging portion 53. The cam 31B is in meshing transmission with the second engaging portion 53 through the first engaging portions 315. For example, the first engaging portions 315 can be a rack, and the second engaging portion 53 can be a gear, but the present application is not limited thereto. In addition, the first oil scraping plate 43 is arranged corresponding to the first cam portion 312, and the second oil scraping plate 44 is arranged corresponding to the second cam portion 313.

[0089] In an embodiment, the slider 20B is provided with an oil storage groove 23 corresponding to the position of the second engaging portion 53, so as to lubricate the second engaging portion 53 and the first engaging portions 315.

[0090] Please refer to Figure 15 As shown, the slider 20C of the pivot structure 1C of the present embodiment is provided with an abutting strip 26. The cam 31 actuates the slider 20C through the abutting strip 26. In addition, the rotating seat and the oil scraping member of the present embodiment are the same as those of the first embodiment.

[0091] In an embodiment, the present application further provides an image forming device directly or indirectly comprising all the technical features of the pivot structures (1, 1A, 1B, 1C) of the above-mentioned embodiments. The image forming device comprises a frame and a lifting plate (not shown in the figure). The pivot structures (1, 1A, 1B, 1C) are arranged between the frame and the lifting plate. The fixed seat 10 is mounted on the frame, and the rotating seat 30 is fixed on the lifting plate. The image forming device can be a multifunctional digital composite all-in-one machine, a copying machine or a scanner, but the present application is not limited thereto.

[0092] In addition, the accommodating cavity 11 of the fixed seat 10 can also accommodate a metal frame. The metal frame is locked with the fixed seat 10 by screws (see Figure 6 ).

[0093] The above description is only the preferred embodiment of the present application, and is not intended to limit the patent protection range of the present application. Other equivalent changes made by using the patent spirit of the present application shall also belong to the patent protection range of the present application.

Claims

1. A pivot structure, characterized in that, include: A fixed base having a cavity; A slider is disposed in the cavity; A rotating base rotatably connected to the fixed base, the rotating base including a cam that is contact-actuated corresponding to the slider; and At least one oil scraping component is disposed on the slider and configured corresponding to the cam; When the rotating seat rotates upward, the oil on the cam surface is scraped off by the oil scraping member.

2. The pivot structure as described in claim 1, characterized in that, The oil scraping component includes an oil scraper and at least one spring. The slider is provided with a groove, and the oil scraper and the spring are disposed in the groove.

3. The pivot structure as described in claim 2, characterized in that, The spring is elastically clamped between the scraper and the slider, so that the scraper can move between a first position and a second position following the rotation of the rotating seat, and continuously abut against the cam.

4. The pivot structure as described in claim 3, characterized in that, There are multiple springs, and the oil scraper is provided with multiple positioning grooves, with each spring housed in its respective positioning groove.

5. The pivot structure as described in claim 4, characterized in that, Each of the positioning slots of the oil scraper is provided with a positioning post, and each positioning post is connected to a spring.

6. The pivot structure as described in claim 1, characterized in that, The surface of the cam is provided with at least one oil groove.

7. The pivot structure as described in claim 1, characterized in that, It also includes a pivot member that passes through the slider, the slider being actuated by the cam via the pivot member.

8. The pivot structure as described in claim 7, characterized in that, The slider is provided with a shaft hole, and the rotating shaft component includes a rotating shaft and a plurality of fixed bushings, with the rotating shaft passing through the shaft hole via each of the fixed bushings.

9. The pivot structure as described in claim 8, characterized in that, The slider is provided with an oil reservoir corresponding to the position of the rotating shaft for lubrication of the rotating shaft and the cam.

10. The pivot structure as claimed in claim 7, characterized in that, The slider is provided with a first groove and a second groove, and the oil scraping component includes a first oil scraper and a second oil scraper. The first oil scraper is disposed in the first groove, and the second oil scraper is disposed in the second groove.

11. The pivot structure as claimed in claim 10, characterized in that, The cam includes a first cam portion, a second cam portion, and a clearance groove between the first cam portion and the second cam portion. The first oil scraper is configured corresponding to the first cam portion, and the second oil scraper is configured corresponding to the second cam portion.

12. The pivot structure as claimed in claim 7, characterized in that, The cam includes a first cam portion, a second cam portion, and a plurality of first engaging portions between the first cam portion and the second cam portion. The rotating shaft component includes a second engaging portion. The cam engages with the second engaging portion through each of the first engaging portions for transmission.

13. The pivot structure as described in claim 12, characterized in that, The slider is provided with an oil reservoir corresponding to the position of the second engagement part, so as to lubricate the second engagement part and each of the first engagement parts.

14. The pivot structure as claimed in claim 1, characterized in that, The slider has an abutment bar, and the cam actuates the slider through the abutment bar.

15. The pivot structure as claimed in claim 1, characterized in that, It also includes an elastomer disposed in the cavity and elastically held between the fixed seat and the slider.

16. An image forming apparatus, characterized in that, Includes the pivot structure described in any one of claims 1 to 15.

Images