Paper delivery speed reducing mechanism and tissue distributor

Abstract

The paper delivery speed reducing mechanism comprises a paper tube, a pressing roller and a paper pressing elastic component, at least one mounting groove is formed in the peripheral wall of the paper tube, and the mounting groove extends in the axial direction of the paper tube; the at least one compression roller is rotatably arranged in the mounting groove around the axis of the compression roller, and the two ends of the compression roller are arranged at the two ends of the extension direction of the mounting groove respectively; the paper pressing elastic component acts between the pressing roller and the paper tube and is used for providing elastic force for the pressing roller to move towards the outer side of the mounting groove, so that a part of the pressing roller is arranged on the peripheral side of the paper tube in a protruding mode. When external force for paper extraction is removed, the rotating speed of the paper roll can be effectively reduced, the speed of the paper roll is reduced, meanwhile, during paper extraction, the pressing roller can rotate along with the paper roll, and effective speed reduction of the paper roll can be achieved under the condition that smooth rotation of the paper roll is kept.

Description

Technical Field

[0001] The invention relates to the technical field of nut tightening devices, and in particular to a paper discharging speed reduction mechanism and a paper towel dispenser. Background Art

[0002] A paper towel dispenser is a device for holding paper rolls, which is suitable for use in public places such as kitchens and toilets. Existing paper towel dispensers install and position paper rolls through a paper shaft inside. In order to make paper drawing smooth, the paper rolls are rotatably installed on a smooth axis paper shaft. However, in actual use, when the paper roll is pulled hard, the paper roll will rotate due to the inertia force, resulting in a long roll of paper being taken out, resulting in waste. Summary of the invention

[0003] The object of the present invention is to provide a paper discharging deceleration mechanism and a paper towel dispenser to solve one or more technical problems existing in the prior art and at least provide a beneficial choice or create conditions.

[0004] The technical solutions adopted to solve the above technical problems are:

[0005] The present invention provides a paper discharging deceleration mechanism, comprising:

[0006] A paper tube, the outer peripheral wall of which is provided with at least one mounting groove, the mounting groove extending along the axial direction of the paper tube;

[0007] A pressure roller, at least one of which is rotatably arranged in the mounting groove around its own axis, and two ends of the pressure roller are respectively arranged at two ends of the extending direction of the mounting groove;

[0008] A paper pressing elastic component acts between the pressing roller and the paper tube, and is used to provide the pressing roller with elastic force to move toward the outside of the mounting groove, so that a part of the pressing roller protrudes from the outer peripheral side of the paper tube.

[0009] The beneficial effects of the paper discharging deceleration mechanism of the present invention are:

[0010] When in use, the paper roll is sleeved on the outer circumference of the paper tube, and under the elastic force of the paper pressing elastic component, a part of the pressure roller protrudes from the outer circumference of the paper tube. At this time, the pressure roller rebounds outward and elastically abuts against the inner circumference of the paper roll. When drawing paper, the paper roll rotates around the paper tube, and the pressure roller maintains elastic abutment with the inner circumference of the paper roll, providing a damping force pressing the paper roll outward. When the external force of drawing paper is removed, the rotation speed of the paper roll can be effectively reduced, thereby slowing down the paper roll. At the same time, when drawing paper, the pressure roller can rotate with the paper roll, and effectively decelerate the paper roll while keeping the paper roll rotating smoothly.

[0011] As a further improvement of the above technical solution, the two ends of the paper tube are a suspended end and a mounting end respectively, and the pressing roller is inclined toward the outer circumference of the paper tube in a direction from the suspended end to the mounting end.

[0012] As a further improvement of the above technical solution, one end of the pressing roller close to the suspended end is an adjustment end, and the adjustment end is adjustably arranged along the outer circumference of the paper tube;

[0013] One end of the pressing roller close to the mounting end is a connecting end, and the paper pressing elastic component acts on the connecting end.

[0014] As a further improvement of the above technical solution, the suspended end is provided with an adjustment component, and the adjustment component includes an elastic tightening ring and an adjustment wheel. The elastic tightening ring is installed in the suspended end, and at least one first connecting part is provided on the edge of the elastic tightening ring. The adjustment end is connected to the first connecting part, and the adjusting wheel is rotatably arranged in the elastic tightening ring. The outer periphery of the adjusting wheel is provided with at least one cam part with an outer diameter gradually increasing. The elastic tightening ring is used to make the first connecting part elastically abut against the outer peripheral wall of the cam part, and the adjusting wheel is used to drive the cam part to rotate to push the first connecting part to move radially.

[0015] As a further improvement of the above technical solution, the outer peripheral wall of the cam portion is provided with a plurality of clamping limit portions arranged at intervals along the circumferential direction, the clamping limit portions are clamped with the first connecting portion, and an inwardly concave elastic portion is provided between the clamping limit portions and the first connecting portion.

[0016] As a further improvement of the above technical solution, the edge of the elastic tightening ring is provided with at least two installation limit parts arranged in an annular manner, and the suspended end is provided with an installation positioning part connected to the installation limit parts.

[0017] As a further improvement of the above technical solution, the adjustment component includes a rotary cover, the rotary cover is rotatably covered on the suspended end, and the adjustment wheel is fixed to the inner side of the rotary cover.

[0018] As a further improvement of the above technical solution, the paper pressing elastic component is clamped in the paper tube, and the paper pressing elastic component is provided with a central part and at least one elastic pressing ring, and the elastic pressing ring includes two connecting elastic arms distributed in a fan shape on the periphery of the central part, and an arc-shaped spring piece connected between the two connecting elastic arms, and a second connecting part is provided in the middle of the arc-shaped spring piece, and the second connecting part is connected to the connecting end.

[0019] As a further improvement of the above technical solution, two mounting grooves are provided, and the two mounting grooves are centrally symmetrically arranged with the axis of the paper tube, and each mounting groove is provided with the pressing roller, and the axis of the pressing roller is located on the same plane.

[0020] The present invention further provides a paper towel dispenser, comprising the paper discharge deceleration mechanism and a shell, wherein a paper discharge port is provided at the bottom of the shell, and the paper roll is installed in the shell.

[0021] Other features and advantages of the present invention will be set forth in the description which follows, and in part will be apparent from the description, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described below in conjunction with the accompanying drawings and embodiments;

[0023] Figure 1 This is an exploded view of an embodiment of the paper discharge deceleration mechanism provided by the present invention;

[0024] Figure 2 This is a top view of an embodiment of the paper discharge deceleration mechanism provided by the present invention;

[0025] Figure 3 yes Figure 2 Sectional view of section AA;

[0026] Figure 4 yes Figure 3 Sectional view of the middle BB section;

[0027] Figure 5 This is a front side schematic diagram of an embodiment of the paper discharge deceleration mechanism provided by the present invention;

[0028] Figure 6 This is a rear side schematic diagram of an embodiment of the paper discharge deceleration mechanism provided by the present invention;

[0029] Figure 7 is an exploded view of an embodiment of the paper towel dispenser provided by the present invention;

[0030] Figure 8 is a top cross-sectional view of an embodiment of the paper towel dispenser provided by the present invention;

[0031] Fig. 9 It is an exploded view between the paper discharge deceleration mechanism and the rear housing provided by the present invention;

[0032] Figure Number:

[0033] Paper tube 100; mounting groove 110; hanging end 120; mounting positioning portion 121; mounting end 130; rotating buckle 131; adjusting assembly 140; elastic tightening ring 141; adjusting wheel 142; first connecting portion 143; cam portion 144; mounting limiting portion 145; clamping limiting portion 146; elastic portion 147; rotating cover 148; rotating hole 149; limiting block 150;

[0034] Pressing roller 200; adjusting end 210; connecting end 220; rubber sleeve 230;

[0035] Paper pressing elastic member 300; central portion 310; elastic pressing ring 320; connecting elastic arm 321; arc-shaped elastic piece 322; second connecting portion 323;

[0036] Paper roll 400;

[0037] Rotate the key 500;

[0038] Housing 600 ; paper outlet 610 ; front housing 620 ; rear housing 630 ; rotation slot 631 . DETAILED DESCRIPTION

[0039] Embodiments of the present invention are described in detail below, examples of which 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.

[0040] In the description of the present invention, it should be understood that descriptions involving orientation, such as orientation or positional relationship indicated as up, down, etc., are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0041] In the description of the present invention, "a plurality" means more than two. If there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0042] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0043] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described below are only some embodiments of the present invention, not all embodiments.

[0044] The existing paper towel dispenser installs and positions the paper roll 400 internally through a paper shaft. In order to make paper withdrawal smooth, the paper roll 400 is rotatably installed on an optical axis paper shaft. However, in actual use, when the paper roll is pulled hard, due to the action of inertia, the paper roll will rotate with it, resulting in a long roll of paper being carried out, causing waste. Therefore, the present invention proposes a paper discharge deceleration mechanism, which can effectively decelerate the paper roll 400 while maintaining the smooth rotation of the paper roll 400, thereby preventing a long roll of paper from being carried out due to the action of inertia.

[0045] like Figures 1 to 6 As shown, the paper discharge deceleration mechanism of the present invention comprises: a paper cylinder 100 , a pressing roller 200 and a paper pressing elastic member 300 .

[0046] According to the installation posture of the paper tube 100 and to facilitate the description of other components, the axial direction of the paper tube 100 of this embodiment is extended forward and backward. In some other embodiments, the paper tube 100 can be extended in other directions.

[0047] like Figure 1 and Figure 4 As shown, the outer peripheral wall of the paper tube 100 of this embodiment is provided with at least one mounting groove 110, and the mounting groove 110 extends along the axial direction of the paper tube 100, and the pressure roller 200 is rotatably installed in the mounting groove 110 around its own axis, wherein the two ends of the pressure roller 200 are respectively arranged at the two ends of the extension direction of the mounting groove 110. It can be understood that the pressure roller 200 is arranged in the mounting groove 110 along the front-to-back direction.

[0048] like Figure 1 and Figure 6 As shown, the paper pressing elastic member 300 acts between the pressing roller 200 and the paper tube 100 , and is used to provide elastic force for the pressing roller 200 to move outward from the mounting groove 110 , so that a portion of the pressing roller 200 protrudes from the outer peripheral side of the paper tube 100 .

[0049] When in use, the paper roll 400 is sleeved on the outer circumference of the paper tube 100. Under the elastic force of the paper pressing elastic component 300, a part of the pressing roller 200 protrudes from the outer circumference of the paper tube 100. At this time, the pressing roller 200 springs outward and elastically abuts against the inner circumference of the paper roll 400. It can be understood that the inner circle of the paper roll 400 abuts against the outer circumference of the pressing roller 200 and squeezes the pressing roller 200 inward.

[0050] When drawing paper, the paper roll 400 rotates around the paper tube 100, and the pressure roller 200 maintains elastic contact with the inner circumference of the paper roll 400, providing a damping force to press the paper roll 400 outward. When the external force of drawing paper is removed, the rotation speed of the paper roll 400 can be effectively reduced, thereby decelerating the paper roll 400. At the same time, when drawing paper, the pressure roller 200 can rotate with the paper roll 400, and while maintaining the smooth rotation of the paper roll 400, the paper roll 400 can be effectively decelerated.

[0051] In order to avoid slipping, in some embodiments, Figure 4 As shown, the outer periphery of the pressure roller 200 is provided with a rubber sleeve 230 to increase friction.

[0052] like Figure 1 As shown, the front and rear ends of the paper tube 100 are respectively a suspended end 120 and a mounting end 130, and the mounting end 130 is used for installation and fixing. When the paper roll 400 is installed, the paper roll 400 is sleeved on the paper tube 100 from the suspended end 120 to the mounting end 130. In order to enable the paper roll 400 to be quickly sleeved on the paper tube 100 from the front to the back, the pressure roller 200 of this embodiment is inclined toward the outer peripheral side of the paper tube 100 from the suspended end 120 to the mounting end 130. It can be understood that, in the self-heating state, the height of the portion of the pressure roller 200 protruding from the outer peripheral side of the paper tube 100 is gradually increased from the front to the back. When the paper roll 400 is sleeved from the front to the back, the pressure roller 200 can be gradually squeezed so that the paper roll 400 can be smoothly sleeved on the paper tube 100.

[0053] Furthermore, if Figure 1 and Figure 4 As shown, the front and rear ends of the pressing roller 200 of this embodiment are divided into an adjusting end 210 and a connecting end 220, wherein the adjusting end 210 is close to the suspended end 120, and the connecting end 220 is close to the mounting end 130. The adjusting end 210 is adjustably arranged along the outer circumference of the paper tube 100, and the paper pressing elastic member 300 acts on the connecting end 220. It can be understood that the adjusting end 210 is adjustably arranged along the depth direction of the mounting groove 110. After the paper roll 400 is sleeved on the outer circumference of the paper tube 100, the position of the adjusting end 210 can be adjusted, and the adjusting end 210 is adjusted outward to increase the protruding height of the front part of the pressing roller 200, so that the outer circumference of the front part of the pressing roller 200 can abut against the inner circumference of the paper roll 400 to meet the needs of paper rolls 400 of different sizes.

[0054] At the same time, the squeezing elastic force between the pressure roller 200 and the paper roll 400 can be adjusted, and the tightness can be adjusted according to different paper rolls 400. If some paper towels are easy to break, the adjustment end 210 can be adjusted inward to reduce the squeezing elastic force. If some paper towels are tougher, the adjustment end 210 can be adjusted outward to increase the squeezing elastic force.

[0055] Specifically, Figure 1 , Figure 2 and Figure 3 As shown, the suspended end 120 of this embodiment is provided with an adjustment component 140, and the adjustment end 210 is adjusted by the adjustment component 140. The adjustment component 140 of this embodiment includes an elastic tightening ring 141 and an adjustment wheel 142. The elastic tightening ring 141 is installed in the suspended end 120. The edge of the elastic tightening ring 141 is provided with at least one first connecting portion 143. The adjustment end 210 is connected to the first connecting portion 143. The adjustment wheel 142 is rotatably arranged in the elastic tightening ring 141. The outer periphery of the adjustment wheel 142 is provided with at least one cam portion 144 with an outer diameter gradually increasing. The elastic tightening ring 141 is used to tighten the elastic tightening ring 141. In order to make the first connection part 143 elastically abut against the outer peripheral wall of the cam part 144, the adjusting wheel 142 is used to drive the cam part 144 to rotate to push the first connection part 143 to move radially. It can be understood that the elastic tightening ring 141 presses the first connection part 143 inward so that the first connection part 143 elastically abuts against the outer peripheral wall of the cam part 144. When the adjusting wheel 142 is rotated, the cam part 144 is driven to rotate, and the cam part 144 pushes the first connection part 143 to move radially, thereby driving the adjusting end 210 to move radially, thereby realizing the adjustment of the adjusting end 210 along the depth direction of the mounting groove 110.

[0056] Under the elastic force of the elastic tightening ring 141 , the adjusting wheel 142 and the first connecting portion 143 can be kept in a mutually pressed state to avoid looseness and abnormal noise.

[0057] Both ends of the pressure roller 200 of this embodiment are provided with connecting shafts, and the pressure roller 200 is rotatably connected to the first connecting part 143 through the connecting shaft. The first connecting part 143 is a hole structure, and the hole diameter of the first connecting part 143 is larger than the outer diameter of the connecting shaft of the adjustment end 210, so that it can realize rotation and swing at the same time.

[0058] In order to prevent the elastic tightening ring 141 from shifting or falling off easily when shrinking, the edge of the elastic tightening ring 141 is provided with at least two installation limit portions 145 arranged at annular intervals, and the suspended end 120 is provided with an installation positioning portion 121 connected to the installation limit portion 145, wherein the installation limit portion 145 of this embodiment is a guide groove structure, the installation limit portion 145 extends radially, and the installation positioning portion 121 is a guide column structure, and the installation positioning portion 121 slides with the installation limit portion 145 to achieve positioning.

[0059] Furthermore, if Figure 1 and Figure 3As shown, the outer peripheral wall of the cam portion 144 of this embodiment is provided with a plurality of snap-fit ​​limiting portions 146 arranged in a circumferentially spaced arrangement, and the snap-fit ​​limiting portions 146 are snap-fitted with the first connecting portion 143. In this embodiment, the snap-fit ​​limiting portions 146 are snap-fitted with the first connecting portion 143 to achieve positioning of the first connecting portion 143. The plurality of snap-fit ​​limiting portions 146 correspond to different adjustment gears and also correspond to different types of paper rolls 400.

[0060] like Figure 1 and Figure 3 As shown, in this embodiment, an inwardly concave elastic portion 147 is provided between each clamping limit portion 146 and the first connecting portion 143 . The elastic portion 147 of this embodiment realizes the tightening of the elastic tightening ring 141 .

[0061] like Figures 1 to 5 As shown, the adjustment component 140 of this embodiment also includes a rotary cover 148, which is rotatably covered on the suspended end 120, and the adjustment wheel 142 is fixed to the inner side of the rotary cover 148. When in use, the rotary cover 148 is rotated to drive the adjustment wheel 142 to rotate, so as to achieve the adjustment of the front end of the pressure roller 200, so that the installation of the paper roll 400 does not interfere with the operation of the rotary cover 148. A polygonal rotation hole 149 is provided at the center of the rotary cover 148 of this embodiment. When in use, an external rotation key 500 is inserted into the rotation hole 149 to drive the rotary cover 148 to rotate.

[0062] like Figure 6 As shown, the paper pressing elastic component 300 of this embodiment is clamped in the paper tube 100 , and a plurality of limit blocks 150 are provided on the inner circumference of the paper tube 100 . The paper pressing elastic component 300 is limitedly installed between the plurality of limit blocks 150 and the rear end of the installation slot 110 .

[0063] like Figure 1 and Figure 6 As shown, the paper pressing elastic member 300 of the present embodiment is provided with a central portion 310 and at least one elastic pressing ring 320. The elastic pressing ring 320 is arranged on the outer peripheral side of the central portion 310. The elastic pressing ring 320 includes two connecting elastic arms 321 distributed in a fan shape on the outer periphery of the central portion 310, and an arc-shaped elastic piece 322 connected between the two connecting elastic arms 321. A second connecting portion 323 is arranged in the middle of the arc-shaped elastic piece 322, and the second connecting portion 323 is connected to the connecting end 220.

[0064] In this embodiment, an elastic pressure ring 320 is used to provide an outward elastic force to the connecting end 220 of the pressure roller 200. Specifically, the second connecting portion 323 is arranged in the middle of the arc-shaped spring piece 322. The elastic force of the arc-shaped spring piece 322 is used to make the second connecting portion 323 have an outward force. The second connecting portion 323 is a hole structure. The connecting end 220 is rotatably connected to the second connecting portion 323. The hole diameter of the second connecting portion 323 is larger than the outer diameter of the connecting shaft of the connecting end 220, so that rotation and swing can be achieved.

[0065] like Figures 1 to 6 As shown, in this embodiment, two mounting grooves 110 are provided, and the two mounting grooves 110 are centrally symmetrically arranged with the axis of the paper tube 100. Each mounting groove 110 is provided with a pressure roller 200, and the axis of the pressure roller 200 is located on the same plane as the axis of the pressure roller 200. In this embodiment, two pressure rollers 200 are used to compress and decelerate the paper roll 400, so that the force is more uniform. Correspondingly, two elastic pressure rings 320, two first connecting parts 143, two second connecting parts 323, and two cam parts 144 are respectively provided.

[0066] In some other embodiments, more than two mounting slots 110 may be provided, and the paper roll 400 may be compressed and decelerated by more than two pressing rollers 200 .

[0067] like Figures 7 to 9 As shown, this embodiment also proposes a paper towel dispenser, including a paper discharge deceleration mechanism and a shell 600, a paper discharge port 610 is provided at the bottom of the shell 600, and a paper roll 100 is installed in the shell 600 in a forward and backward extending manner. Specifically, the installation end 130 of the paper roll 100 is connected to the rear wall inside the shell 600.

[0068] The shell 600 of this embodiment includes a front shell 620 and a rear shell 630, which are installed in a front-to-back manner. The mounting end 130 of this embodiment is rotatably connected to the shell 600 to achieve detachable installation. The mounting end 130 is provided with a plurality of rotating buckles 131, and correspondingly, a plurality of rotating slots 631 are provided on the inner wall of the rear shell 630.

[0069] When disassembling and assembling the paper roll 400, the front shell 620 is opened, the paper roll 400 is put on the paper tube 100, and then the external rotating key 500 is inserted into the rotating hole 149 to drive the rotary cover 148 to rotate. The cam portion 144 pushes the first connecting portion 143 to move radially, driving the adjusting end 210 to move radially, so as to adjust the adjusting end 210 along the depth direction of the mounting groove 110. According to the type of the paper roll 400, the first connecting portion 143 is limitedly engaged with one of the clamping limit portions 146, so that the pressure roller 200 is rebounded outward and elastically abuts against the inner circumference of the paper roll 400. When drawing paper, the paper roll 400 rotates around the paper tube 100, and the pressure roller 200 maintains elastic abutment with the inner circumference of the paper roll 400, providing a damping force to press the paper roll 400 outward. When the external force of drawing paper is removed, the rotation speed of the paper roll 400 can be effectively reduced, thereby slowing down the paper roll 400.

[0070] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" 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 present invention. In this specification, the schematic representation of the above terms does 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.

[0071] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A paper discharge deceleration mechanism, characterized in that: include: A paper tube, the outer peripheral wall of which is provided with at least one mounting groove, the mounting groove extending along the axial direction of the paper tube; A pressure roller, at least one of which is rotatably arranged in the mounting groove around its own axis, and two ends of the pressure roller are respectively arranged at two ends of the extending direction of the mounting groove; A paper pressing elastic component acts between the pressing roller and the paper tube, and is used to provide the pressing roller with elastic force to move toward the outside of the mounting groove, so that a part of the pressing roller protrudes from the outer peripheral side of the paper tube.

2. The paper discharge deceleration mechanism according to claim 1, characterized in that: The two ends of the paper tube are a suspended end and a mounting end respectively, and the pressing roller is arranged to be inclined toward the outer peripheral side of the paper tube in a direction from the suspended end to the mounting end.

3. The paper discharge deceleration mechanism according to claim 2, characterized in that: One end of the pressing roller close to the suspended end is an adjustment end, and the adjustment end is adjustably arranged along the outer circumference of the paper tube; One end of the pressing roller close to the mounting end is a connecting end, and the paper pressing elastic component acts on the connecting end.

4. The paper discharge deceleration mechanism according to claim 3, characterized in that: The suspended end is provided with an adjustment component, which includes an elastic tightening ring and an adjustment wheel. The elastic tightening ring is installed in the suspended end, and at least one first connecting portion is provided at the edge of the elastic tightening ring. The adjustment end is connected to the first connecting portion, and the adjusting wheel is rotatably arranged in the elastic tightening ring. The outer periphery of the adjusting wheel is provided with at least one cam portion with an outer diameter gradually increasing. The elastic tightening ring is used to make the first connecting portion elastically abut against the outer peripheral wall of the cam portion, and the adjusting wheel is used to drive the cam portion to rotate to push the first connecting portion to move radially.

5. The paper discharge deceleration mechanism according to claim 4, characterized in that: The outer peripheral wall of the cam portion is provided with a plurality of clamping and limiting portions arranged in a circumferential direction at intervals, the clamping and limiting portions are clamped with the first connecting portion, and an inwardly concave elastic portion is provided between the clamping and limiting portions and the first connecting portion.

6. The paper discharge deceleration mechanism according to claim 4, characterized in that: The edge of the elastic tightening ring is provided with at least two installation limit parts which are arranged in an annular manner, and the suspended end is provided with an installation positioning part which is connected with the installation limit parts.

7. The paper discharge deceleration mechanism according to claim 4, characterized in that: The adjusting component comprises a rotary cover, the rotary cover is rotatably covered on the suspended end, and the adjusting wheel is fixed on the inner side of the rotary cover.

8. The paper discharge deceleration mechanism according to claim 3, characterized in that: The paper pressing elastic component is clamped in the paper tube, and is provided with a central part and at least one elastic pressing ring. The elastic pressing ring includes two connecting elastic arms distributed in a fan shape on the periphery of the central part, and an arc-shaped spring piece connected between the two connecting elastic arms. A second connecting part is provided in the middle of the arc-shaped spring piece, and the second connecting part is connected to the connecting end.

9. The paper discharge deceleration mechanism according to any one of claims 1 to 8, characterized in that: There are two installation grooves, which are centrally symmetrically arranged with respect to the axis of the paper tube. Each installation groove is provided with the pressing roller, and the axes of the pressing rollers are located on the same plane.

10. A paper towel dispenser, characterized in that: It comprises the paper discharge deceleration mechanism as claimed in any one of claims 1 to 9, and also comprises a shell, a paper discharge port is arranged at the bottom of the shell, and the paper roll is installed in the shell.

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