Reading support and rotational joint assembly thereof

Abstract

The utility model discloses a rotating joint assembly of a reading support and the reading support. The rotating joint assembly of the reading support comprises a first connecting base, a second connecting base and a shaft assembly. The first connecting seat is provided with two connecting lugs, a containing space is formed between the two connecting lugs, one connecting lug is provided with a first shaft hole, and the other connecting lug is provided with a second shaft hole; the second connecting seat is embedded in the accommodating space, a third shaft hole is formed in the second connecting seat, and a retaining wall is arranged in the third shaft hole to divide the second shaft hole into a first accommodating part and a second accommodating part; the shaft assembly comprises a shaft rod, a sleeving piece, a locking piece, an elastic piece and a tensioning piece, the shaft rod is synchronously connected with the second connecting seat, the sleeving piece is embedded in the first shaft hole, an end wall is arranged on the sleeving piece, the end wall abuts against the shaft rod, the locking piece is connected to the shaft rod in a threaded mode, the elastic piece is arranged between the locking piece and the end wall, and the tensioning piece is fixedly matched with the shaft rod. The whole structure of the reading support is simplified, and the whole reading support is easy to assemble.

Description

Technical Field

[0001] The utility model relates to the technical field of auxiliary learning tools, in particular to a rotating joint assembly of a reading support and a reading support. Background Art

[0002] Reading supports are usually used to place books, mobile phones, tablets, etc. When users are reading, they do not need to hold books, mobile phones, tablets, etc., thus liberating the hands of users and guiding users to maintain a correct reading posture for a long time, which is beneficial to developing good reading habits. Especially for children and teenagers, it can prevent myopia and correct sitting postures. Currently, reading supports generally include a support plate, a support arm, and a base. The support plate is used to place and support books, mobile phones, tablets, etc. The support arm is connected between the base and the support plate. To meet the storage requirements and conform to the usage habits of users with different body shapes, both ends of the support arm are respectively connected to the support plate and the base through a rotating joint assembly. When in use, the base can be placed on the desktop, and then the rotation angles of the support arm relative to the base and the support plate can be adjusted to keep the support plate at an optimal angle so that books, mobile phones, tablets, etc. meet the reading requirements of users. In the non-use state, through the rotatable structure of the support arm with the support plate and the base, the support plate can be folded and placed flat on the base to reduce the overall occupied space of the reading support. The rotating joint assembly should be able to ensure relative rotation and at the same time provide a certain damping effect to stably support books, mobile phones, tablets, etc., resulting in a complex structure and difficult installation of the rotating joint assembly of the existing reading support. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a rotating joint assembly of a reading support and a reading support, which has a simple structure and is easy to install.

[0004] To achieve the above purpose, the utility model adopts the following technical solutions:

[0005] The rotating joint assembly of a reading support includes a first connecting seat, a second connecting seat, and a shaft assembly;

[0006] Two opposite connecting ears are arranged on the first connecting seat, and a receiving space is formed between the two connecting ears. A first shaft hole is arranged on one of the connecting ears, and a second shaft hole is arranged on the other connecting ear; the second connecting seat is embedded in the receiving space, and a third shaft hole is arranged thereon. A blocking wall is arranged in the third shaft hole to divide the second shaft hole into a first receiving part and a second receiving part;

[0007] The shaft assembly includes a shaft rod, a socket piece, a locking piece, an elastic piece, and a tensioning piece. The inner part of the shaft rod is inserted through the first accommodating part and is synchronously connected to the second connecting seat, and the outer part extends into the first shaft hole. The socket piece is embedded in the first shaft hole and is synchronously connected to the first connecting seat. One end wall is provided on the socket piece, and the inner side surface of the end wall abuts against the shaft rod to press the shaft rod towards the stop wall. The locking piece is screwed onto the shaft rod. The elastic piece is placed between the locking piece and the outer side surface of the end wall. The tensioning piece is placed in the second shaft hole and the second accommodating part and passes through the stop wall to be fixedly engaged with the shaft rod to tension the shaft rod towards the stop wall.

[0008] Preferably, the elastic piece is a disc spring sleeved on the shaft rod.

[0009] Preferably, the socket piece includes a peripheral wall extending outward from the edge of the end wall. The peripheral wall and the end wall enclose a chamber, and the elastic piece is placed in the chamber.

[0010] Preferably, abutting planes are respectively provided on the outer surface of the peripheral wall and the inner wall surface of the first shaft hole, and the two abutting planes are in fit with each other so that the peripheral wall and the inner wall surface of the first shaft hole are synchronously connected.

[0011] Preferably, a step surface is provided on the shaft rod. The part of the shaft rod located inside the step surface is inserted into the first accommodating part and is synchronously connected to the second connecting seat, and the part located outside the step surface extends into the first shaft hole. Wear-resistant gaskets are clamped between the end wall and the step surface and between the end wall and the elastic piece. An external thread surface is provided on the part of the shaft rod located outside the step surface, and the locking piece is a locking nut screwed on the external thread surface.

[0012] Preferably, a threaded hole is provided on the part of the shaft rod located inside the step surface. The inner end of the tensioning piece passes through the stop wall and is screwed into the threaded hole, and the tensioning piece is rotated to tension the shaft rod towards the stop wall.

[0013] Preferably, the inner surfaces of the second shaft hole and the second accommodating part are both conical and jointly form a conical hole. The inner diameter of the conical hole gradually increases from the end close to the stop wall towards the end far from the stop wall. A shaft sleeve is embedded in the second shaft hole. The outer diameter of the shaft sleeve gradually increases from its inner end towards its outer end, and the outer peripheral surface of the shaft sleeve abuts against the inner surface of the conical hole. The inner end of the shaft sleeve is inserted through the second accommodating part and abuts against the stop wall. The tensioning piece is a screw passing through the shaft sleeve, the inner end of the screw is screwed into the threaded hole, and the nut of the screw presses against the outer end of the shaft sleeve.

[0014] Preferably, end caps are respectively sealed at the outer ends of the first shaft hole and the second shaft hole, and the two end caps are fixedly engaged with the two connecting ears in a clamping manner.

[0015] The reading bracket includes the rotating joint assembly of the above-mentioned reading bracket.

[0016] Preferably, the reading support includes a base, a connecting rod, and a support plate. A rotating joint assembly of the reading support is provided between both ends of the connecting rod and the base and the support plate respectively.

[0017] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0018] The shaft rod is tightened and fixed in the first accommodating portion through a tensioning member, so that the shaft rod is fixedly engaged with the second connecting seat. The socket member synchronously connected to the first connecting seat is pressed towards the shaft rod by an elastic member. The static friction force generated between the end wall of the socket member and the shaft rod provides damping for the relative rotation between the first connecting seat and the second connecting seat, so that the first connecting seat and the second connecting seat can maintain a relatively fixed state without external force when relatively rotating to any position. Therefore, there is no need to provide a complex damping structure between the first connecting seat and the second connecting seat, which simplifies the overall structure of the reading support. During assembly, the second connecting seat is placed in the accommodating space of the first connecting seat. After loading the shaft rod and the elastic member, the locking member and the tensioning member are respectively loaded from the outside of the connecting ear and the connecting ear, and the assembly of the first connecting seat and the second connecting seat can be quickly completed, making the entire reading support easy to assemble. Description of the Drawings

[0019] Figure 1 is a schematic structural diagram of the rotating joint assembly of the present utility model;

[0020] Figure 2 is a cross-sectional view of the rotating joint assembly of the present utility model;

[0021] Figure 3 is Figure 2 an enlarged view of part A in

[0022] Figure 4 is Figure 1 a schematic structural diagram of the shaft rod in

[0023] Figure 5 is Figure 1 a schematic structural diagram of the socket member in

[0024] Figure 6 is a schematic structural diagram of the reading support of the present utility model;

[0025] Figure 7 is a schematic diagram of the folded state of the reading support of the present utility model.

[0026] Wherein: 10, the first connecting seat; 101, connecting ear; 102, connecting ear; 103, accommodating space; 11, the first shaft hole; 12, the second shaft hole; 20, the second connecting seat; 201, retaining wall; 202, the first accommodating portion; 203, the second accommodating portion; 21, the third shaft hole; 31, shaft rod; 311, the first section; 312, the second section; 313, step surface; 314, external thread surface; 315, threaded hole; 32, socket member; 321, end wall; 322, peripheral wall; 323, abutting plane; 33, disc spring; 34, lock nut; 35, screw; 36, shaft sleeve; 371, wear-resistant gasket; 372, wear-resistant gasket; 38, end cover; 40, base; 50, connecting rod; 60, support plate. Detailed implementation manners

[0027] Next, in combination with the accompanying drawings and specific implementation manners, the present utility model will be further described. It should be noted that, on the premise of no conflict, the following-described embodiments or technical features can be arbitrarily combined with each other to form new embodiments. Unless otherwise specified, the materials and equipment used in this embodiment can be purchased from the market. The examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present application, and should not be construed as a limitation to the present application.

[0028] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present application 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 thus should not be construed as a limitation to the present application. In the description of the present application, the meaning of "a plurality" is two or more, unless otherwise specifically and precisely defined.

[0029] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "connected", "communicated", "connected" should be understood in a broad sense. For example, it can be a fixed connection, or can be connected through an intermediate medium, and can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0030] Such as Figure 1 、 2As shown in Figures 3, 4, and 5, a rotating joint assembly of a reading bracket according to the present utility model includes a first connecting seat 10, a second connecting seat 20, and a shaft assembly. The first connecting seat 10 is provided with a connecting ear 101 and a connecting ear 102. The connecting ear 101 and the connecting ear 102 are respectively located on both sides of the first connecting seat 10 and are oppositely arranged. The connecting ear 101 and the connecting ear 102 are separated by a certain distance to form an accommodating space 103 therebetween. The upper, lower, and front sides of the accommodating space 103 are all in an open state, so that the second connecting seat 20 can be embedded into the accommodating space 103. The connecting ear 101 is provided with a first shaft hole 11 that penetrates from one end to the other end, and the connecting ear 102 is provided with a second shaft hole 12 that penetrates from one end to the other end; the second connecting seat 20 is provided with a third shaft hole 21. After the second connecting seat 20 is placed in the accommodating space 103, the third shaft hole 21 is coaxially arranged with the first shaft hole 11 and the second shaft hole 12. A retaining wall 201 is provided inside the third shaft hole 21. The third shaft hole 21 is divided into two parts by the retaining wall 201. A part close to the connecting ear 101 forms a first accommodating part 202, and a part close to the connecting ear 102 forms a second accommodating part 203. The shaft assembly passes through the first connecting seat 10 and the second connecting seat 20, and includes a shaft rod 31, a socket part 32, a locking nut 34, a disc spring 33, and a screw 35. The inner part of the shaft rod 31 is inserted into the first accommodating part 202, and the shaft rod 31 is synchronously connected to the second connecting seat 20. The socket part 32 is embedded inside the first shaft hole 11 and is synchronously connected to the first connecting seat 10. An end wall 321 is provided at the inner end of the socket part 32. The inner side surface of the end wall 321 abuts against the shaft rod 31 to press the shaft rod 31 towards the retaining wall 201. The locking nut 34 is screwed on the shaft rod 31 and is located outside the end wall 321. The disc spring 33 is sleeved on the shaft rod 31 and is located between the end wall 321 and the locking nut 34. By tightening the locking nut 34, the disc spring 33 is compressed towards the inside, so that the deformation amount of the disc spring 33 increases, that is, the elastic stress of the disc spring 33 increases, and the end wall 321 can be pressed towards the inside, so that the static friction force generated between the end wall 321 and the shaft rod 31 increases. The screw 35 is used as a tensioning member and is placed in the second shaft hole 12 and the second accommodating part 203. The inner end of the screw 35 passes through the retaining wall 201 and is screwed on the inner end of the shaft rod 31. Through the fixed cooperation between the screw 35 and the inner end of the shaft rod 31, the screw 35 can tension the shaft rod 31 towards the retaining wall 201. Based on the structure in which the shaft rod 31 is synchronously connected to the second connecting seat 20 in the first accommodating part 202, the shaft rod 31 is firmly fixed to the second connecting seat 20.

[0031] It should be noted that the above disc spring 33 of the present utility model can also be replaced by other elastic members. For example, the elastic member can be an elastic rubber block, a spring, etc. The locking nut 34 can also be other locking members that can be screwed and matched with the shaft rod 31.

[0032] In the present utility model, the shaft rod 31 is tightened and fixed to the first accommodating portion 202 through a tightening member, so that the shaft rod 31 is fixedly engaged with the second connecting seat 20. The socket member 32 synchronously coupled to the first connecting seat 10 is pressed towards the shaft rod 31 by an elastic member. The static friction force generated between the end wall 321 on the socket member 32 and the shaft rod 31 provides damping for the relative rotation between the first connecting seat 10 and the second connecting seat 20, enabling the first connecting seat 10 and the second connecting seat 20 to maintain a relatively fixed state without external force when relatively rotated to any position. Thus, there is no need to provide a complex damping structure between the first connecting seat 10 and the second connecting seat 20, simplifying the overall structure of the reading stand. During assembly, the second connecting seat 20 is placed in the accommodating space 103 of the first connecting seat 10. After the shaft rod 31 and the elastic member are installed, the locking member and the tightening member are respectively installed from the outside of the connecting ear 101 and the connecting ear 102, and the assembly of the first connecting seat 10 and the second connecting seat 20 can be quickly completed, making the entire reading stand easy to assemble.

[0033] In a preferred embodiment, the socket member 32 not only includes the above-mentioned end wall 321, but also includes a peripheral wall 322 extending outward from the edge of the end wall 321. The peripheral wall 322 and the end wall 321 enclose a chamber, and the chamber forms an opening at the outer end of the socket member 32. After the above-mentioned disc spring 33 is sleeved on the shaft rod 31, it is embedded inside the chamber. The chamber provides an avoidance space for the disc spring 33 in the axial direction of the shaft assembly, reducing the axial dimension of the shaft assembly, thereby facilitating the control of the width dimensions of the first connecting seat 10 and the second connecting seat 20. In order to enable the socket member 32 to be synchronously coupled with the first connecting seat 10 after being embedded into the first shaft hole 11, the present utility model provides a contact plane 323 on the outer surface of the peripheral wall 322 of the socket member 32. Correspondingly, a contact plane is provided on the inner wall surface of the first shaft hole 11. The contact plane 323 is in mutual contact with the contact plane on the inner wall surface of the first shaft hole 11, enabling the peripheral wall 322 to be synchronously coupled with the inner wall surface of the first shaft hole 11, and then enabling the socket member 32 to be synchronously coupled with the first connecting seat 10. Of course, in other embodiments, splines may also be provided on the outer surface of the peripheral wall 322 and the inner wall surface of the first shaft hole 11, and the socket member 32 is synchronously coupled with the first connecting seat 10 through the splines.

[0034] In another preferred embodiment, a step surface 313 is provided on the shaft rod 31. The step surface 313 divides the shaft rod 31 into a first section 311 inside the step surface 313 and a second section 312 outside the step surface 313. The first section 311 is embedded in the first receiving portion 202, and the first section 311 is synchronously coupled with the second connecting seat 20. The synchronous coupling structure between the first section 311 and the second connecting seat 20 can be that a plane or a spline that are in close contact with each other are provided on the outer peripheral surface of the first section 311 and the inner wall surface of the first receiving portion 202, so that the first section 311 is synchronously coupled with the second connecting seat 20, and at the same time, it is ensured that the first section 311 can be inserted into the first receiving portion 202; the second section 312 extends into the first shaft hole 11. A wear-resistant gasket 372 is clamped between the end wall 321 and the step surface 313. At the same time, a wear-resistant gasket 371 is clamped between the disc spring 33 and the end wall 321. An external thread surface 314 is provided on the outer peripheral surface of the second section 312 of the shaft rod 31. The above-mentioned locking nut 34 is screwed onto the external thread surface 314. During assembly, the locking nut 34 can be rotated and adjusted, and then the extrusion force applied by the locking nut 34 to the disc spring 33 is changed, so as to change the deformation amount of the disc spring 33, and then change the pressing degree of the wear-resistant gasket 371 and the wear-resistant gasket 372, and finally adjust the damping force between the first connecting seat 10 and the second connecting seat 20, so that the damping force between the two can be conveniently rotated by the user on the premise of meeting the relative fixing requirements. The setting of the wear-resistant gaskets 371 and 372 can reduce the wear of the end wall 321 and the step surface 313, and extend the service life of the reading support. A threaded hole 315 is opened on the inner end surface of the first section 311 of the shaft rod 31. The inner end of the screw 35 passes through a preset hole in the retaining wall 201 and is screwed into the threaded hole 315. By tightening the screw 35, the shaft rod 31 is pulled towards the retaining wall 201. Based on the synchronous coupling structure between the first section 311 of the shaft rod 31 and the first receiving portion 202, the first section 311 of the shaft rod 31 is fixed to the first receiving portion 202.

[0035] In addition, in the present utility model, the second shaft hole 12 is set to be conical, and the second accommodating portion 203 is also conical. In this way, the inner surfaces of the second shaft hole 12 and the second accommodating portion 203 are both conical and jointly form a conical hole. The inner diameter of the conical hole gradually increases from the end close to the blocking wall 201 towards the end far from the blocking wall 201. A shaft sleeve 36 is embedded inside the second shaft hole 12. The shaft sleeve 36 is conical and matches the conical hole, and its outer diameter gradually increases from the inner end towards the outer end. The inner end of the shaft sleeve 36 is inserted into the second accommodating portion 203, so that the outer peripheral surface of the shaft sleeve 36 abuts against the inner surfaces of the second shaft hole 12 and the second accommodating portion 203, and the inner end surface of the shaft sleeve 36 abuts against the blocking wall 201. A screw 35 is inserted through the shaft sleeve 36. By rotating the screw 35, the nut of the screw 35 presses the outer end of the shaft sleeve 36. During the process of rotating the screw 35, by axially pressing the shaft sleeve 36 through the screw 35, the outer peripheral surface of the shaft sleeve 36 squeezes the inner surfaces of the second shaft hole 12 and the second accommodating portion 203. The matching conical surfaces ensure that the second shaft hole 12 and the second accommodating portion 203 have a high coaxiality, thereby avoiding the situation of jamming when the first connecting seat 10 and the second connecting seat 20 rotate relative to each other.

[0036] End caps 38 are respectively sealed at the outer ends of the first shaft hole 11 and the second shaft hole 12. The two end caps 38 are fixedly matched with the connecting ears 101 and 102 in a clamping manner. By blocking the first shaft hole 11 and the second shaft hole 12 with the two end caps 38, dust and other impurities are prevented from entering the inside of the shaft assembly, making the shaft assembly have better stability.

[0037] As Figure 6 shown, a reading support of the present utility model includes the rotating joint assembly of the above-mentioned reading support; specifically, the reading support includes a base 40, a connecting rod 50, and a support plate 60. A rotating joint assembly of the above-mentioned reading support is provided between the two ends of the connecting rod 50 and the base 40 and the support plate 60 respectively. It can be that a first connecting seat 10 is respectively provided at the two ends of the connecting rod 50, a second connecting seat 20 is respectively provided on the support plate 60 and the base 40, and a rotating joint assembly is respectively provided at the joints of the connecting rod 50 with the base 40 and the support plate 60. As Figure 7 shown, when the reading support is in a non-use state, the reading support can be folded so that the support plate 60 is laid flat on the base 40, which is convenient for the storage and placement of the reading support.

[0038] Finally, it should be noted that the above embodiments are only optional embodiment modes of the present utility model, and cannot be used to limit the protection scope of the present utility model. Any non-substantial changes and substitutions made by those skilled in the art based on the present utility model belong to the protection scope required by the present utility model.

Claims

1. The rotating joint assembly of the reading support, characterized in that, It includes a first connecting seat, a second connecting seat, and a shaft assembly; Two opposite connecting ears are provided on the first connecting seat, and a receiving space is formed between the two connecting ears. A first shaft hole is provided on one of the connecting ears, and a second shaft hole is provided on the other connecting ear; the second connecting seat is embedded in the receiving space, and a third shaft hole is provided thereon. A partition wall is provided in the third shaft hole to divide the second shaft hole into a first receiving portion and a second receiving portion; The shaft assembly includes a shaft rod, a socket member, a locking member, an elastic member, and a tension member. The inner portion of the shaft rod passes through the first receiving portion and is synchronously connected to the second connecting seat, and the outer portion extends into the first shaft hole. The socket member is embedded in the first shaft hole and is synchronously connected to the first connecting seat. An end wall is provided on the socket member, and the inner side surface of the end wall abuts against the shaft rod to press the shaft rod towards the partition wall. The locking member is screwed onto the shaft rod. The elastic member is placed between the locking member and the outer side surface of the end wall. The tension member is placed in the second shaft hole and the second receiving portion and passes through the partition wall to be fixedly engaged with the shaft rod to tension the shaft rod towards the partition wall.

2. The rotating joint assembly of the reading bracket according to claim 1, characterized in that, The elastic member is a disc spring sleeved on the shaft rod.

3. The rotating joint assembly of the reading support according to claim 1, characterized in that, The socket member includes a peripheral wall extending outward from the edge of the end wall. The peripheral wall and the end wall enclose a chamber, and the elastic member is placed in the chamber.

4. The rotating joint assembly of the reading bracket according to claim 3, characterized in that, Contact planes are respectively provided on the outer surface of the peripheral wall and the inner wall surface of the first shaft hole, and the two contact planes are fitted together so that the peripheral wall is synchronously connected to the inner wall surface of the first shaft hole.

5. The rotating joint assembly of the reading bracket according to claim 1, characterized in that, A stepped surface is provided on the shaft rod. The portion of the shaft rod located inside the stepped surface is embedded in the first receiving portion and is synchronously connected to the second connecting seat, and the portion located outside the stepped surface extends into the first shaft hole. Wear-resistant washers are clamped between the end wall and the stepped surface, and between the end wall and the elastic member. An external thread surface is provided on the portion of the shaft rod located outside the stepped surface. The locking member is a locking nut screwed onto the external thread surface.

6. The rotating joint assembly of the reading bracket according to claim 5, characterized in that, A threaded hole is provided on the portion of the shaft rod located inside the stepped surface. The inner end of the tension member passes through the partition wall and is screwed into the threaded hole, and the tension member is rotated to tension the shaft rod towards the partition wall.

7. The rotating joint assembly of the reading bracket according to claim 6, characterized in that, The inner surfaces of the second shaft hole and the second receiving portion are both conical and jointly form a conical hole. The inner diameter of the conical hole gradually increases from the end close to the partition wall towards the end away from the partition wall. A bushing is embedded in the second shaft hole. The outer diameter of the bushing gradually increases from its inner end towards its outer end, and the outer peripheral surface of the bushing abuts against the inner surface of the conical hole. The inner end of the bushing passes through the second receiving portion and abuts against the partition wall. The tension member is a screw passing through the bushing, and the inner end of the screw is screwed into the threaded hole, and the nut of the screw presses against the outer end of the bushing.

8. The rotating joint assembly of the reading support according to claim 1, wherein, End caps are respectively provided at the outer ends of the first shaft hole and the second shaft hole, and the two end caps are fixedly engaged with the two connecting ears in a clamping manner.

9. Reading support, characterized in that, It includes the rotating joint assembly of the reading bracket according to any one of claims 1-8.

10. The reading support according to claim 9, characterized in that, The reading bracket includes a base, a connecting rod, and a support plate. A rotating joint assembly of the reading bracket is respectively provided between the two ends of the connecting rod and the base and the support plate.

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