Bouncing core device, separable connecting device and tissue holder

Abstract

The utility model relates to the technical field of articles for daily use, and discloses a bouncing core device, a separable connecting device and a tissue holder. The bouncing core device provided by the utility model comprises a moving part which is arranged in a first concave structure at the top of the base and is connected with the separable connecting device; the transverse moving part is arranged at the position of the moving part, the transverse moving part is used for moving left and right, and the first side face of the transverse moving part is opposite to the second side face of the first concave structure; the bulge structure is arranged on the first side surface or the second side surface; the first concave structure is arranged on the first side face, the second concave structure is arranged on the second side face or the first side face, a V-shaped protrusion is arranged in the second concave structure, the bending position of the V-shaped protrusion is arranged upwards or downwards, and the protrusion structure is arranged in the second concave structure. By means of the bouncing core device, the decontamination sprayer and the base can be detachably and smoothly connected, and the use experience of a user on the tissue holder is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of daily necessities, and in particular to a bouncing core device, a detachable connecting device and a paper towel rack. Background Art

[0002] With the continuous advancement of science and technology and the continuous improvement of people's living standards, the integration and convenience of daily necessities have also increased. A paper towel holder is an integrated device that combines the use of roll paper or paper towels with a decontamination sprayer.

[0003] The existing paper towel rack usually includes a base and a dirt remover sprayer. The dirt remover sprayer is designed to be a column. The roll of paper is put outside the dirt remover sprayer and placed on the base. The base and the dirt remover sprayer are detachably connected. The dirt remover sprayer is pressed downward to separate it from the base, so that the dirt is sprayed with the dirt remover sprayer, and then the dirt is wiped off with a part of the roll of paper. Finally, the dirt remover sprayer is put back on the base and the dirt remover sprayer is pressed again to connect the dirt remover sprayer to the base.

[0004] In order to achieve the above functions, it is necessary to set a detachable connecting device between the base and the column-shaped cleaning sprayer. However, the existing detachable connecting device has an obvious sense of frustration during use. More importantly, when the column-shaped cleaning sprayer is pressed down, the cleaning sprayer is easily stuck and cannot be separated from the base, which seriously affects the user experience of the paper towel rack. Utility Model Content

[0005] In order to solve at least one aspect of the above problems, the utility model provides a bouncing core device, which is a detachable connection device between a column and a base of a paper towel rack, and the bouncing core device includes:

[0006] A moving member, disposed in the first recessed structure on the top of the base, the moving member being connected to the detachable connecting device;

[0007] A first elastic deformation member, used for pushing the moving member upwards;

[0008] A transverse member, arranged at the moving member, the transverse member is used for moving left and right, and a first side surface of the transverse member is arranged opposite to a second side surface of the first recessed structure;

[0009] a protruding structure, disposed on the first side surface or the second side surface; and

[0010] A second concave structure is arranged at the second side surface or the first side surface, a V-shaped protrusion is arranged in the second concave structure, a bending part of the V-shaped protrusion is arranged upward or downward, and the protrusion structure is arranged in the second concave structure;

[0011] The second recessed structure is used to limit the raised structure to move only clockwise or counterclockwise around the edge of the V-shaped protrusion, and the column and the base can be detachably connected by lifting the moving member relative to the first recessed structure.

[0012] Optionally, the cross-section of the protruding structure is a rhombus, the cross-section of the protruding structure is a vertical plane perpendicular to the protruding direction of the protruding structure, and the length direction of the protruding structure is vertically arranged.

[0013] Optionally, the second recessed structure is a polygonal recessed structure, a guide protrusion is arranged in the second recessed structure, the guide protrusion is connected to the side wall of the second recessed structure, the guide protrusion is arranged close to the opening of the V-shaped protrusion, the guide protrusion protrudes toward the opening of the V-shaped protrusion, and the guide protrusion is used to make the protrusion structure enter the bending part of the V-shaped protrusion.

[0014] Optionally, there are two protruding structures and two second recessed structures, each of the protruding structures is arranged in one of the second recessed structures, there are two first side surfaces and they are arranged back to back at two side surfaces of the transverse member, and there are two second side surfaces and they are arranged one-to-one with the first side surfaces.

[0015] Optionally, the movable member is provided with an elongated through hole, the elongated through hole extends in a horizontal direction, the transverse member is placed in the elongated through hole, the two protruding structures are respectively placed at the corresponding first side surfaces and extend out of the elongated through hole, and the two second recessed structures are respectively arranged at the corresponding second side surfaces.

[0016] Optionally, the bending part of the V-shaped protrusion is arranged upward.

[0017] In addition, the utility model also provides a detachable connection device for detachably connecting the upright post and the base of the paper towel rack, and the detachable connection device comprises:

[0018] An eaves guard is arranged at the bottom of the column;

[0019] Two clamps are arranged on the top of the moving part of the bouncing core device, the clamps are hinged to the moving part, and the eaves are hooked by closing the two clamps; and

[0020] A second elastic deformation member, disposed at the clamping grip, the second elastic deformation member being used to keep the two clamping grips open;

[0021] Wherein, when the moving member moves downward relative to the first recessed structure at the top of the column, the side wall of the first recessed structure is used to close the two clamps.

[0022] Optionally, the moving member includes two vertical plates, the two clamps are clamped between the two vertical plates, and the transverse member is arranged between the two vertical plates.

[0023] Optionally, the detachable connecting device also includes a left shell and a right shell, the left shell and the right shell are respectively detachably connected to the top of the base, the left shell and the right shell are snapped together, the first recessed structure is recessed downward from the top of the left shell and the right shell, and the movable part is placed between the left shell and the right shell.

[0024] In addition, the utility model also provides a paper towel rack, including the detachable connecting device.

[0025] Compared with the prior art, a V-shaped protrusion is arranged in the second recessed structure, and the protrusion structure is moved to the opening of the V-shaped protrusion and can be stuck in the bending part of the V-shaped protrusion, so as to reduce the height of the moving part relative to the first recessed structure, and ensure that the column and the base can be connected together, and then the second recessed structure is used to limit the protrusion structure to move only along the clockwise or counterclockwise direction around the edge of the V-shaped protrusion, so as to ensure that the protrusion structure can smoothly detach from the opening of the V-shaped protrusion, so that the moving part extends from the first recessed structure, and ensures that the column and the base are separated, thereby realizing the detachable connection between the base and the column.

[0026] At the same time, the transverse member can move left and right, and the movable member can move up and down, so that the raised structure can perform a compound movement, so that the raised structure can move arbitrarily in the second recessed structure, thereby improving the movement flexibility of the raised structure in the second recessed structure and preventing the raised structure from getting stuck and causing the column to get stuck.

[0027] In this way, through the bouncing core device in the utility model, the decontamination sprayer and the base can be detachably connected smoothly, thereby improving the user experience of the paper towel rack. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A schematic structural diagram of a paper towel rack according to an embodiment of the utility model;

[0029] Figure 2 Another schematic structural diagram of a paper towel rack according to an embodiment of the utility model;

[0030] Figure 3 This is a schematic structural diagram of a detachable connection device according to an embodiment of the utility model;

[0031] Figure 4 A schematic exploded structural diagram of a bouncing core device according to an embodiment of the utility model;

[0032] Figure 5 for Figure 4 The enlarged schematic diagram of P in FIG.

[0033] Figure 6 It is a schematic structural diagram of the transverse moving member of an embodiment of the utility model.

[0034] Description of reference numerals:

[0035] 1. Pillar; 11. Eaves;

[0036] 2. base; 21. first recessed structure;

[0037] 31. moving member; 311. long strip through hole; 32. first elastic deformation member; 33. transverse member; 34. protrusion structure; 35. second concave structure; 351. V-shaped protrusion; 352. guide protrusion;

[0038] 41. Clamp; 42. Second elastic deformation member; 43. Left shell; 44. Right shell. DETAILED DESCRIPTION

[0039] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0040] In the description of the present utility model, it is necessary to understand that the orientation or position relationship indicated by the terms "upper" and "lower" etc. is based on the orientation or position relationship when the product is normally used.

[0041] The terms "first" and "second" are used only for descriptive purposes and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. The drawings of the embodiments of the utility model are provided with a coordinate system X-axis, Y-axis and Z-axis, wherein the X-axis represents the front-to-back direction, the Y-axis represents the left-to-right direction, the Z-axis represents the vertical direction, the positive direction of the Z-axis represents the top, and the negative direction of the Z-axis represents the bottom.

[0042] See also Figures 1 to 6 In this embodiment, a bouncing core device is provided, which is a detachable connection device between a column 1 and a base 2 of a paper towel rack, and the bouncing core device includes:

[0043] A moving member 31 is disposed in the first recessed structure 21 at the top of the base 2, and the moving member 31 is connected to the detachable connecting device;

[0044] A first elastic deformation member 32, used for pushing the moving member 31 upwards;

[0045] A transverse member 33 is disposed at the moving member 31, and the transverse member 33 is used for left-right movement, and a first side surface of the transverse member 33 is disposed opposite to a second side surface of the first recessed structure 21;

[0046] a protruding structure 34, disposed on the first side surface or the second side surface; and

[0047] A second concave structure 35 is arranged at the second side surface or the first side surface, a V-shaped protrusion 351 is arranged in the second concave structure 35, a bending part of the V-shaped protrusion 351 is arranged upward or downward, and the protrusion structure 34 is arranged in the second concave structure 35;

[0048] The second recessed structure 35 is used to limit the raised structure 34 to move only clockwise or counterclockwise around the edge of the V-shaped protrusion 351, and the column 1 and the base 2 can be detachably connected by lifting the moving member 31 relative to the first recessed structure 21.

[0049] It should be noted that the column 1 in this embodiment is also called a decontamination sprayer. For the convenience of description in this embodiment, it is simply referred to as the column 1.

[0050] It should be noted that the detachable connection device in this embodiment can be a clamping structure, which is hingedly connected to achieve the clamping and releasing states, corresponding to the detachable connection between the column 1 and the base 2. The clamping structure is arranged on the top of the moving member 31 and connected to the moving member 31. The moving member 31 is lifted and lowered in the first recessed structure 21, so that the clamping structure is hingedly swung, thereby opening and closing or clamping.

[0051] It should be noted that the shape of the second recessed structure 35 here can be a polygonal recessed structure, such as a triangle or a pentagon, so as to limit the protruding structure 34 to move only along the outer edge of the V-shaped protrusion 351. In order to make the protruding structure 34 move only in a clockwise or counterclockwise direction, the edge profile of the second recessed structure 35 can be adjusted so that these edge profiles are appropriately inclined, thereby preventing the protruding structure 34 from returning along the original path. These are all conventional designs in this field.

[0052] Specifically, the shape of the second recessed structure 35 can be a triangle, or a triangular shape, because the V-shaped protrusion 351 is approximately a triangle. At this time, when the protrusion structure 34 moves to the left and right ends of the V-shaped protrusion 351, the corner will directly guide the protrusion structure 34 into the opening of the V-shaped protrusion 351, thereby preventing the protrusion structure 34 from "flowing back" and ensuring that it can only move clockwise or counterclockwise; or, the shape of the second recessed structure 35 can also be a pentagon. At this time, the outermost edges of the two arms of the V-shaped protrusion 351 can be edges extending vertically, and the vertically extending edges cooperate with the pentagonal second recessed structure 35 to guide the protrusion structure 34 to continue to move clockwise or counterclockwise. Of course, in order to ensure that the protrusion structure 34 smoothly enters the opening of the V-shaped protrusion 351, a guiding protrusion can also be set on the edge of the second recessed structure 35, which will be described in detail later in this embodiment.

[0053] In addition, it should be noted that when the protruding structure 34 is arranged on the first side of the transverse member 33, the second recessed structure 35 is arranged on the second side of the first recessed structure 21. Conversely, when the protruding structure 34 is arranged on the first recessed structure 21, the second recessed structure 35 is arranged on the transverse member 33. As long as the protruding structure 34 can be moved in the second recessed structure 35, it will be sufficient.

[0054] In addition, it should be noted that whether the bending part of the V-shaped protrusion 351 is arranged to face upward or downward depends on where the protrusion structure 34 is arranged. If the protrusion structure 34 is arranged at the first recessed structure 21, the bending part of the V-shaped protrusion 351 is arranged to face downward, that is, its opening is arranged to face upward; if the protrusion structure 34 is arranged on the transverse member 33, the bending part of the V-shaped protrusion 351 is arranged to face upward, that is, its opening is arranged to face downward.

[0055] In addition, it should be noted that the first elastic deformation member 32 in this embodiment can be a torsion spring or a spring, as long as it can push the moving member 31 upward.

[0056] In this embodiment, by changing the internal bouncing core structure of the detachable connecting device, it is avoided that the column 1 (also called a decontamination sprayer, referred to as the column 1 for the convenience of description in this embodiment) gets stuck and cannot be separated from the base 2 when pressed.

[0057] Specifically, the transverse member 33 can move left and right relative to the movable member 31, and the movable member 31 can move up and down under the extrusion of the first elastic deformation member 32 and the column 1, which enables the transverse member 33 to perform compound movements in the vertical plane. Therefore, the protruding structure 34 or the second recessed structure 35 is set on the first side of the transverse member 33, and the protruding structure 34 can be made to perform any movement in the second recessed structure 35, including movement around the V-shaped protrusion 351. In this way, when the movable part 31 is pressed downward after the column 1 is removed, the protruding structure 34 can only move along the outer contour of the V-shaped protrusion 351 in the second recessed structure 35, and when it reaches the opening of the V-shaped protrusion 351, that is, the back of the bend of the V-shaped protrusion 351, the first elastic deformation member 32 always pushes the movable part 31 upward, so that the protruding structure 34 is stuck in the opening of the V-shaped protrusion 351 and cannot be disengaged. At this time, the protruding structure 34 can no longer move, so that the movable part 31 moves to the bottom of the first recessed structure 21, and the clamping structure of the detachable connecting device clamps the column 1, thereby connecting the column 1 and the base 2 together. When it is necessary to remove the column 1, the column 1 is continued to be pressed downward and the pressing force is made greater than the elastic force of the first elastic deformation member 32 pushing upward. Due to the limitation of the second recessed structure 35, the protruding structure 34 can only leave the opening of the V-shaped protrusion 351 and continue to move clockwise or counterclockwise, so that the movable member 31 can move upward. Accordingly, the clamping structure opens and separates from the column 1, thereby separating the column 1 from the base 2.

[0058] Thus, in the utility model, a V-shaped protrusion 351 is arranged in the second recessed structure 35, and the protrusion structure 34 is moved to the opening of the V-shaped protrusion 351 and can be stuck in the bending part of the V-shaped protrusion 351, thereby reducing the height of the moving part 31 relative to the first recessed structure 21, ensuring that the column 1 and the base 2 can be connected together, and then the second recessed structure 35 is used to limit the protrusion structure 34 to move only along the clockwise or counterclockwise direction around the edge of the V-shaped protrusion 351, ensuring that the protrusion structure 34 can smoothly detach from the opening of the V-shaped protrusion 351, so that the moving part 31 extends from the first recessed structure 21, ensuring that the column 1 is separated from the base 2, thereby realizing the detachable connection between the base 2 and the column 1.

[0059] At the same time, the transverse member 33 can move left and right, and the movable member 31 can move up and down, so that the protruding structure 34 can perform a compound movement, so that the protruding structure 34 can move arbitrarily in the second recessed structure 35, thereby improving the movement flexibility of the protruding structure 34 in the second recessed structure 35, and preventing the protruding structure 34 from getting stuck and causing the column 1 to get stuck.

[0060] In this way, through the bouncing core device in the utility model, the decontamination sprayer and the base 2 can be detachably connected and smoothly connected, thereby improving the user's experience of using the paper towel rack.

[0061] Furthermore, the cross section of the protruding structure 34 is a rhombus, the cross section of the protruding structure 34 is a vertical plane perpendicular to the protruding direction of the protruding structure 34, and the length direction of the protruding structure 34 is vertically arranged.

[0062] The protruding structure 34 is set to be a diamond shape and is set vertically in the length direction. By taking advantage of the characteristic of the diamond shape being a long and thin strip, the protruding structure 34 can more easily enter and exit the opening of the V-shaped protrusion 351, thereby improving the flexibility of the movement of the protruding structure 34.

[0063] Furthermore, the second recessed structure 35 is a polygonal recessed structure, and a guide protrusion 352 is arranged in the second recessed structure 35. The guide protrusion 352 is connected to the side wall of the second recessed structure 35, and the guide protrusion 352 is arranged close to the opening of the V-shaped protrusion 351. The guide protrusion 352 protrudes toward the opening of the V-shaped protrusion 351, and the guide protrusion 352 is used to make the protrusion structure 34 enter the bending part of the V-shaped protrusion 351.

[0064] Preferably, the guide protrusion 352 is triangular in shape, and the protruding direction of the guide protrusion 352 points to the opening of the V-shaped protrusion 351; for example, when the bend of the V-shaped protrusion 351 is set downward, the guide protrusion 352 is located above the V-shaped protrusion 351 and is set downward. Conversely, when the bend of the V-shaped protrusion 351 is set upward, the guide protrusion 352 is located below the V-shaped protrusion 351 and is set upward.

[0065] In addition, the two side arms of the triangle of the guide protrusion 352 are the introduction side wall and the exit side wall respectively. When the column 1 is used to press the movable part 31 downward, the protrusion structure 34 moves to the highest point or the lowest point in the second recessed structure 35. At this time, the protrusion structure 34 moves to the side of the opening of the V-shaped protrusion 351, and also moves to the side of the guide protrusion 352. At this time, the column 1 can no longer be pressed downward. Then, the column 1 is lifted, and the protrusion structure 34 first contacts the introduction side wall and moves along the introduction side wall to the opening of the V-shaped protrusion 351, and then the bend of the V-shaped protrusion 351 is used to prevent the movable part 31 from moving upward, so that the clamping structure clamps the column 1. When separating the column 1, the column 1 is pressed downward, and the moving member 31 drives the protruding structure 34 to continue to move clockwise or counterclockwise. At this time, the protruding structure 34 is disengaged from the bending part of the V-shaped protrusion 351 under the pressing action, and the protruding structure 34 is contacted with the leading side wall under the pressing of the column 1, and leaves the opening of the V-shaped protrusion 351 under the guidance of the leading side wall.

[0066] Furthermore, there are two protruding structures 34 and two second recessed structures 35, each of the protruding structures 34 is arranged in one of the second recessed structures 35, there are two first side surfaces and they are arranged back to back at two side surfaces of the transverse member 33, and there are two second side surfaces and they are arranged one-to-one with the first side surfaces.

[0067] By providing two protruding structures 34 and two second recessed structures 35, when the column 1 is connected to the base 2, especially when the column 1 is lifted, the gravity of the base 2 and the paper roll on the moving part 31 is evenly dispersed to the two protruding structures 34 and the two second recessed structures 35, thereby reducing the tension on each protruding structure 34.

[0068] Furthermore, the movable member 31 is provided with a long strip through hole 311, and the long strip through hole 311 extends in the horizontal direction. The transverse member 33 is placed in the long strip through hole 311, and the two protruding structures 34 are respectively placed at the corresponding first side surfaces and extend out of the long strip through hole 311, and the two second recessed structures 35 are respectively arranged at the corresponding second side surfaces.

[0069] The long strip through hole 311 makes it easy and simple to assemble the transverse member 33 and the moving member 31 .

[0070] Furthermore, the bending part of the V-shaped protrusion 351 is arranged upward.

[0071] In addition, this embodiment further provides a detachable connection device for detachably connecting the upright column 1 and the base 2 of the paper towel rack, and the detachable connection device includes:

[0072] The eaves 11 is arranged at the bottom of the column 1;

[0073] Two clamping claws 41 are arranged on the top of the moving member 31 of the bouncing core device, the clamping claws 41 are hinged to the moving member 31, and the eaves 11 are hooked by closing the two clamping claws 41; and

[0074] A second elastic deformation member 42, disposed at the clamping claw 41, and the second elastic deformation member 42 is used to keep the two clamping claws 41 open;

[0075] When the moving member 31 moves downward relative to the first recessed structure 21 at the top of the column 1 , the side wall of the first recessed structure 21 is used to close the two clamping claws 41 .

[0076] It should be noted that the second elastic deformation member 42 here can be a torsion spring or a spring, as long as it can keep the two clamping claws 41 in an open state.

[0077] In addition, the two clamping claws 41 here are the aforementioned clamping structures.

[0078] Specifically, when connecting the column 1 with the base 2, the two claws 41 remain in an open state under the action of the second elastic deformation member 42, and the column 1 is placed on the moving member 31 between the two claws 41 and pressed downward. The moving member 31 drives the claws 41 to move downward and begins to engage when encountering the obstruction of the side wall of the first recessed structure 21. When the moving member 31 is pressed to the bottom of the first recessed structure 21, the two claws 41 are just stuck on the eaves 11, and the eaves 11 is used to prevent the claws 41 from separating from the column 1, thereby connecting the column 1 and the base 2 together.

[0079] In this embodiment, the aforementioned bouncing core device is cleverly combined with two claws 41 and the eaves 11 to realize a new connection method between the column 1 and the base 2. The two claws 41 and the eaves 11 are used to quickly snap together or separate, thereby improving the sensitivity of the detachable connection between the column 1 and the base 2.

[0080] Furthermore, the moving member 31 includes two vertical plates, the two clamping claws 41 are clamped between the two vertical plates, and the transverse member 33 is arranged between the two vertical plates.

[0081] By utilizing the large vertical contact area of ​​the vertical plate, the movable member 31 is more firmly connected to the catch 41 , and the protruding structure 34 and the second recessed structure 35 are more firmly matched to prevent the protruding structure 34 from detaching from the second recessed structure 35 .

[0082] Preferably, the clamping claw 41 is hinged to the two vertical plates respectively.

[0083] Further, the detachable connection device further comprises a left shell 43 and a right shell 44, the left shell 43 and the right shell 44 are detachably connected to the top of the base 2, the left shell 43 and the right shell 44 are buckled together, the first recessed structure 21 is recessed downward from the top of the left shell 43 and the right shell 44, and the moving member 31 is placed between the left shell 43 and the right shell 44. Preferably, two second recessed structures can be respectively arranged on the inner surfaces of the left shell 43 and the right shell 44.

[0084] Such an arrangement reduces the difficulty of assembling the detachable connecting device, thereby improving its production efficiency.

[0085] Preferably, the left shell 43 and the right shell 44 are detachably connected to the base 2 via threaded connectors, respectively.

[0086] In addition, this embodiment further provides a paper towel rack, comprising the detachable connecting device. Since the technical effect achieved by the paper towel rack is exactly the same as that of the detachable connecting device, no further explanation will be given.

[0087] Although the disclosure is as above, the protection scope of the disclosure is not limited thereto. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the disclosure, and these changes and modifications will fall within the protection scope of the utility model.

Claims

1. A spring core device, used as a detachable connection device between a column (1) and a base (2) of a paper towel rack, characterized in that: The bouncing core device comprises: A moving member (31) is arranged in a first recessed structure (21) at the top of the base (2), and the moving member (31) is connected to the detachable connecting device; A first elastic deformation member (32) is used to push the moving member (31) upwards; a transverse moving member (33) disposed at the moving member (31), the transverse moving member (33) being used for left-right movement, and a first side surface of the transverse moving member (33) being disposed opposite to a second side surface of the first recessed structure (21); a protruding structure (34) disposed on the first side surface or the second side surface; and a second recessed structure (35), arranged on the second side surface or the first side surface, a V-shaped protrusion (351) being arranged in the second recessed structure (35), a bending part of the V-shaped protrusion (351) being arranged upward or downward, and the protrusion structure (34) being arranged in the second recessed structure (35); The second recessed structure (35) is used to restrict the raised structure (34) to move only clockwise or counterclockwise around the edge of the V-shaped protrusion (351), and the column (1) and the base (2) can be detachably connected by lifting the moving member (31) relative to the first recessed structure (21).

2. The bouncing core device according to claim 1, characterized in that: The cross section of the protruding structure (34) is a rhombus, the cross section of the protruding structure (34) is a vertical plane perpendicular to the protruding direction of the protruding structure (34), and the length direction of the protruding structure (34) is vertically arranged.

3. The bouncing core device according to claim 1, characterized in that: The second recessed structure (35) is a polygonal recessed structure, and a guide protrusion (352) is arranged inside the second recessed structure (35). The guide protrusion (352) is connected to the side wall of the second recessed structure (35), and the guide protrusion (352) is arranged close to the opening of the V-shaped protrusion (351). The guide protrusion (352) protrudes toward the opening of the V-shaped protrusion (351), and the guide protrusion (352) is used to make the protrusion structure (34) enter the bending part of the V-shaped protrusion (351).

4. The bouncing core device according to any one of claims 1 to 3, characterized in that: There are two protruding structures (34) and two second recessed structures (35), each of the protruding structures (34) is arranged in one of the second recessed structures (35), there are two first side surfaces and they are arranged opposite to each other at two side surfaces of the transverse member (33), and there are two second side surfaces and they are arranged one-to-one corresponding to the first side surfaces.

5. The bouncing core device according to claim 4, characterized in that: The moving member (31) is provided with a long strip through hole (311), and the long strip through hole (311) extends in a horizontal direction. The transverse moving member (33) is placed in the long strip through hole (311), and the two protruding structures (34) are respectively placed at the corresponding first side surfaces and extend out of the long strip through hole (311), and the two second recessed structures (35) are respectively arranged at the corresponding second side surfaces.

6. The bouncing core device according to claim 5, characterized in that: The bending part of the V-shaped protrusion (351) is arranged upward.

7. A detachable connection device for detachably connecting a column (1) and a base (2) of a paper towel rack, characterized in that: The detachable connecting device comprises: A guard eave (11) is arranged at the bottom of the column (1); Two catches (41) are arranged on the top of the moving member (31) of the bouncing core device according to any one of claims 1 to 6, the catches (41) are hinged to the moving member (31), and the eaves (11) are hooked by closing the two catches (41); and A second elastic deformation member (42) is arranged at the clamping grip (41), and the second elastic deformation member (42) is used to keep the two clamping grips (41) open; Wherein, when the moving member (31) moves downward relative to the first recessed structure (21) at the top of the column (1), the side wall of the first recessed structure (21) is used to close the two clamping claws (41).

8. The detachable connection device according to claim 7, characterized in that: The moving member (31) comprises two vertical plates, the two clamping members (41) are clamped between the two vertical plates, and the transverse moving member (33) is arranged between the two vertical plates.

9. The detachable connection device according to claim 8, characterized in that: The detachable connection device also includes a left shell (43) and a right shell (44), wherein the left shell (43) and the right shell (44) are detachably connected to the top of the base (2), respectively, the left shell (43) and the right shell (44) are buckled together, the first recessed structure (21) is recessed downward from the top of the left shell (43) and the right shell (44), and the moving member (31) is placed between the left shell (43) and the right shell (44).

10. A paper towel holder, characterized in that: A detachable connecting device comprising any one of claims 7 to 9.

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