Adjusting mechanism for wooden frame of drawing board for children

Abstract

The utility model discloses an adjusting mechanism of a wooden frame of a drawing board for children. According to the technical scheme, the device comprises an adjusting piece, a locking piece, a support connecting piece and a rotary knob, the adjusting piece is composed of a cap body and a connecting rod, a square through hole is formed in one side of the cap body, a clamping groove is formed in the other side of the cap body, and the adjusting piece is cut in half to enable the square through hole to become a clamping hole; the locking piece is provided with a locking hole, a clamping strip, a semi-surrounding groove and a locking strip, the support connecting piece comprises a ring-shaped part and a mounting rod fixed on the side edge of the ring-shaped part, the ring-shaped part is provided with a connecting hole and a locking groove, the connecting rod is provided with a connecting groove, the knob is provided with a screw rod, and the screw rod is in threaded connection with the connecting groove. The cross section of the outer side of the connecting rod is round and is highly attached to the connecting hole, the contact area is large, the angle of the rotary drawing board is reduced, the clearance in the height adjusting process of the drawing board is reduced, abrasion is reduced, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the field of drawing board accessories, and more specifically to an adjusting mechanism for a wooden frame of a children's drawing board. Background Art

[0002] An adjusting mechanism for a wooden frame of a children's drawing board with the patent number ZL201821807957.7 discloses a structure that does not affect the service life of the frame, realizes the movable fixation of the wooden drawing board and the frame, and has a simple adjustment. However, the two bracket connectors of this structure rotate around a threaded rod, and there is a gap in the central hole between the threaded tube and the circular end, resulting in play during the process of rotating the drawing board angle and adjusting the drawing board height, and it will wear the thread on the threaded rod, further increasing the play and shortening the service life. Content of the Utility Model

[0003] Aiming at the deficiencies existing in the prior art, the purpose of the present utility model is to provide an adjusting mechanism for a wooden frame of a children's drawing board to solve the above technical problems.

[0004] To achieve the above purpose, the present utility model provides the following technical solutions: An adjusting mechanism for a wooden frame of a children's drawing board includes an adjusting member, a locking member, a bracket connector, and a knob. The adjusting member is composed of a cap body and a connecting rod. A square through hole is opened on the side with a larger diameter of the cap body, and the square through hole is used to clamp the frame wooden strip. The side with a smaller diameter of the cap body is connected to the connecting rod, and a card slot extending towards the square through hole is provided on this side. The adjusting member is cut in half, making the square through hole into a clamping hole. The center of the locking member is provided with a locking hole, and a card strip that is clamped with the card slot is provided on the locking hole. A semi-surrounding groove is provided on one end face of the locking member, and a locking strip is provided on the other end face. The bracket connector includes a circular part and a mounting rod fixed on the side of the circular part. A connecting hole for accommodating the connecting rod is provided on the circular part, and a circle of locking grooves is provided on the circular part around the connecting hole. The cross-section of the outer wall of the connecting rod is circular, and a connecting groove is provided on the connecting rod. The connecting groove extends from the end of the connecting rod towards the cap body. A screw rod is provided on the knob, and the screw rod is threadedly connected with the connecting groove.

[0005] As a further improvement of the present utility model, the bracket connector includes a first connector and a second connector. Both the first connector and the second connector are composed of a circular part and a mounting rod. A first positioning groove is provided on any one of the circular parts, and a first positioning ring is provided on the other circular part. The first positioning ring is rotatably arranged in the first positioning groove.

[0006] As a further improvement of the present utility model, a second positioning groove is provided on any one of the circular parts, and a second positioning ring is provided on the other circular part. The second positioning ring is rotatably arranged in the second positioning groove.

[0007] As a further improvement of the present utility model, there are two card slots, which are respectively arranged on opposite sides of the cap body.

[0008] As a further improvement of the present utility model, the adjusting member is cut in half into a first part and a second part. An assembly groove is provided on the cut surface of the first part, and an assembly rod is provided on the cut surface of the second part. The assembly rod is inserted into the assembly groove. The first part is integrally injection-molded with the assembly groove, and the second part is integrally injection-molded with the assembly rod.

[0009] As a further improvement of the present utility model, the locking member, the first connecting member, and the second connecting member are integrally injection-molded.

[0010] The beneficial effects of the present utility model are as follows: the outer side of the connecting rod is smooth, and the cross-section of the outer side of the connecting rod is circular, with a high degree of fit with the connecting hole and a large contact area, reducing the play during the process of rotating the drawing board angle and adjusting the height of the drawing board, reducing wear, and extending the service life. Description of the Drawings

[0011] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0012] Figure 2 is a three-dimensional structural schematic diagram of the adjusting member;

[0013] Figure 3 is a three-dimensional structural schematic diagram of the locking member;

[0014] Figure 4 is a planar structural schematic diagram of the side of the bracket connecting member connected to the locking member facing the locking member;

[0015] Figure 5 is a planar structural schematic diagram of the other side of the bracket connecting member connected to the locking member;

[0016] Figure 6 is a planar structural schematic diagram of another bracket connecting member;

[0017] Figure 7 is a structural schematic diagram of the knob.

[0018] Marking description: 1. Adjusting member; 11. Cap body; 110. Square through hole; 12. Connecting rod; 121. Card slot; 122. Connecting groove; 2. Locking member; 21. Locking hole; 22. Card strip; 23. Semi-enclosing groove; 24. Locking strip; 3. Bracket connecting member; 31. Circular part; 311. Connecting hole; 32. Mounting rod; 4. Knob; 41. Screw rod; 51. First positioning groove; 52. Second positioning groove; 61. First positioning ring; 62. Second positioning ring; 71. Assembly groove; 72. Assembly rod. Detailed Implementation Modes

[0019] The following will further elaborate on the present utility model in conjunction with the embodiments given in the accompanying drawings.

[0020] Referring to Figures 1-7 As shown, the adjusting mechanism of the wooden frame of the children's drawing board in this embodiment includes an adjusting member 1, a locking member 2, a bracket connecting member 3, and a knob 4. The adjusting member 1 is composed of a cap body 11 and a connecting rod 12. A square through hole 110 is opened on the side with a larger diameter of the cap body 11, and the square through hole 110 is used to clamp the frame wooden strip. The side with a smaller diameter of the cap body 11 is connected to the connecting rod 12, and a card slot 121 extending towards the square through hole 110 is provided on this side. The adjusting member 1 is cut in half, making the square through hole 110 into a clamping hole; a locking hole 21 is provided in the center of the locking member 2, a card strip 22 engaged with the card slot 121 is provided on the locking hole 21, a semi-surrounding groove 23 is provided on one end face of the locking member 2, and a locking strip 24 is provided on the other end face. The bracket connecting member 3 includes a circular portion 31 and a mounting rod 32 fixed to the side of the circular portion 31. A connecting hole 311 for accommodating the connecting rod 12 is provided on the circular portion 31, and a circle of locking grooves is provided on the circular portion 31 around the connecting hole 311. The cross-section of the outer wall of the connecting rod 12 is circular, and a connecting groove 122 is provided on the connecting rod 12, and the connecting groove 122 extends from the end of the connecting rod 12 towards the cap body 11. A screw rod 41 is provided on the knob 4, and the screw rod 41 is in threaded connection with the connecting groove 122.

[0021] Through the above technical solution, during use, first, the square through hole 110 of the cap body 11 of the adjusting member 1 is clamped on the frame wooden strip of the drawing board. The locking member 2 passes through the connecting rod 12 and is sleeved on the cap body 11, and the semi-surrounding grooves 23 on both sides of the locking member 2 are also clamped on the frame wooden strip. At the same time, the card strip 22 is inserted into the card slot 121. Then, one end of the connecting rod 12 is inserted into the connecting hole 311 of the bracket connecting member 3. Next, the screw rod 41 is inserted into the connecting hole 311 of the circular portion 31 of the bracket connecting member 3 from the other end, and then inserted into the connecting groove 122, and then the knob 4 is rotated for connection. During the rotation and fixation of the knob 4, the cap body 11 and the knob 4 approach each other. When the cap body 11 moves towards the bracket connecting member 3, the square through hole 110 presses the frame wooden strip, and part of the frame wooden strip is placed in the semi-surrounding groove 23, thereby fixing the drawing board and preventing it from sliding in the square through hole 110. As the knob 4 continues to rotate, the locking strip 24 on the locking member 2 is snapped into the locking groove, making the drawing board non-flippable and completing the fixed installation.

[0022] When adjusting the angle and height of the drawing board, rotate the knob 4 in the reverse direction, so that the knob 4 is away from the cap body 11 until the locking bar 24 on the locking member 2 slips in the locking groove, and the locking member 2 rotates, then the drawing board can be rotated. And when the semi-surrounding groove 23 is no longer fixed to the square through hole 110 of the frame wooden strip, the frame wooden strip can be pushed to slide in the square through hole 110, thereby adjusting the height of the drawing board. The mounting rod 32 is connected to the drawing board bracket, and the frame wooden strip and the drawing board bracket are both prior arts, which will not be elaborated in this application.

[0023] The outer side of the connecting rod 12 is smooth, and the cross-section of the outer side of the connecting rod 12 is circular, with a high degree of fit with the connecting hole 311 and a large contact area, reducing the play during the process of rotating the angle of the drawing board and adjusting the height of the drawing board, reducing wear, and extending the service life.

[0024] As a specific embodiment of the improvement, the bracket connecting member 3 includes a first connecting member and a second connecting member. Both the first connecting member and the second connecting member are composed of a circular part 31 and a mounting rod 32. A first positioning groove 51 is provided on any one of the circular parts 31, and a first positioning ring 61 is provided on the other circular part 31. The first positioning ring 61 is rotatably arranged in the first positioning groove 51.

[0025] Through the above technical solution, the first positioning ring 61 is rotatably located in the first positioning groove 51, making the axial positions of the circular parts 31 on the first connecting member and the second connecting member stable, reducing play, extending the service life, and improving the adjustment accuracy.

[0026] As a specific embodiment of the improvement, a second positioning groove 52 is provided on any one of the circular parts 31, and a second positioning ring 62 is provided on the other circular part 31. The second positioning ring 62 is rotatably arranged in the second positioning groove 52.

[0027] Through the above technical solution, the second positioning ring 62 is rotatably located in the second positioning groove 52, and in cooperation with the first positioning ring 61 and the first positioning groove 51, it further improves the axial position stability of the circular parts 31 on the first connecting member and the second connecting member, reduces play, extends the service life, and improves the adjustment accuracy.

[0028] As a specific embodiment of the improvement, there are two card slots 121, which are respectively arranged on opposite sides of the cap body 11.

[0029] Through the above technical solution, the card slots 121 are provided on both opposite sides of the cap body 11, and the number and positions of the card strips 22 are the same as those of the card slots 121, which can better lock the adjusting member 1.

[0030] As an improved specific embodiment, the adjusting member 1 is cut into a first part and a second part in half, the cut surface of the first part is provided with an assembly groove 71, the cut surface of the second part is provided with an assembly rod 72, the assembly rod 72 is inserted into the assembly groove 71, the first part and the assembly groove 71 are integrally injection molded, and the second part and the assembly rod 72 are integrally injection molded.

[0031] Through the above technical solution, during the assembly process, the first part and the second part are assembled together first, and then the assembly rod 72 is inserted into the assembly groove 71 for preliminary positioning, which facilitates subsequent assembly and improves assembly efficiency.

[0032] The first portion and the assembly groove 71 are integrally injection-molded, and the second portion and the assembly rod 72 are integrally injection-molded, resulting in high structural strength, high stability and high production efficiency.

[0033] Specifically, the positions of the assembly groove 71 and the assembly hole correspond to the position of the locking member 2 , further improving the stability of the first part and the second part after being connected.

[0034] Specifically, a conflict ring is provided on the locking member 2. Before the clamping strip 22 conflicts with the clamping slot 121, the conflict ring conflicts with the end of the cap body 11, which reduces the vertical force on the clamping strip 22, improves the structural strength and prolongs the service life.

[0035] As an improved specific implementation, the locking member 2, the first connecting member and the second connecting member are all integrally injection molded.

[0036] Through the above technical solution, the locking member 2, the first connecting member and the second connecting member are integrally injection-molded, which has high structural strength, high stability and high production efficiency.

[0037] Specifically, the knob 4 and the screw 41 are integrally injection-molded.

[0038] Specifically, the knob 4 is integrally injection-molded, and the screw 41 is integrally injection-molded. The knob 4 and the screw 41 are detachably connected.

[0039] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, certain improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. Adjusting mechanism for the wooden frame of a children's drawing board, comprising an adjusting member (1), a locking member (2), a bracket connecting member (3) and a knob (4). The adjusting member (1) consists of a cap body (11) and a connecting rod (12). A square through hole (110) is formed on the side of the cap body (11) with a larger diameter, and the square through hole (110) is used to clamp the frame wooden strip. The side of the cap body (11) with a smaller diameter is connected to the connecting rod (12), and a clamping groove (121) extending towards the square through hole (110) is provided on this side. The adjusting member (1) is cut in half, making the square through hole (110) into a clamping hole; A locking hole (21) is provided in the center of the locking member (2), and a clamping strip (22) that is engaged with the clamping groove (121) is provided on the locking hole (21). A semi-surrounding groove (23) is provided on one end face of the locking member (2), and a locking strip (24) is provided on the other end face. The bracket connecting member (3) includes a circular portion (31) and a mounting rod (32) fixed to the side of the circular portion (31). A connecting hole (311) for accommodating the connecting rod (12) is provided on the circular portion (31). It is characterized in that: The cross-section of the outer wall of the connecting rod (12) is circular. A connecting groove (122) is provided on the connecting rod (12), and the connecting groove (122) extends from the end of the connecting rod (12) towards the cap body (11). A screw rod (41) is provided on the knob (4), and the screw rod (41) is in threaded connection with the connecting groove (122).

2. The adjusting mechanism of the wooden frame of the children's drawing board according to claim 1, characterized in that: The bracket connecting member (3) includes a first connecting member and a second connecting member. Both the first connecting member and the second connecting member are composed of a circular portion (31) and a mounting rod (32). A first positioning groove (51) is provided on any one of the circular portions (31), and a first positioning ring (61) is provided on the other circular portion (31). The first positioning ring (61) is rotatably arranged in the first positioning groove (51).

3. The adjusting mechanism of the wooden frame of the children's drawing board according to claim 2, characterized in that: A second positioning groove (52) is provided on any one of the circular portions (31), and a second positioning ring (62) is provided on the other circular portion (31). The second positioning ring (62) is rotatably arranged in the second positioning groove (52).

4. The adjusting mechanism of the wooden frame of the children's drawing board according to claim 1, characterized in that: There are two of the clamping grooves (121), which are respectively arranged on opposite sides of the cap body (11).

5. The adjusting mechanism of the wooden frame of the children's drawing board according to claim 1, characterized in that: The adjusting member (1) is cut in half into a first part and a second part. An assembly groove (71) is provided on the cut surface of the first part, and an assembly rod (72) is provided on the cut surface of the second part. The assembly rod (72) is inserted into the assembly groove (71). The first part is integrally injection-molded with the assembly groove (71), and the second part is integrally injection-molded with the assembly rod (72).

6. The adjusting mechanism of the wooden frame of the children's drawing board according to claim 2, characterized in that: The locking member (2), the first connecting member, and the second connecting member are integrally injection-molded.

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