Gear adjusting mechanism and desk

Abstract

The utility model relates to the field of human life necessities, and provides a gear adjusting mechanism and a desk, the gear adjusting mechanism comprises a rotating frame, a rod frame or an adjusting plate, the rotating frame is provided with a clamping hole, and the circumferential side wall of the clamping hole is provided with a plurality of clamping grooves at intervals; a lock pin locked with the clamping groove is arranged on the rod frame; the adjusting plate and the rod frame are clamped on the rotating frame at the position of the clamping hole, and a driving piece for driving the lock pin to be separated from or clamped with the clamping groove is arranged on the adjusting plate. The locking pin is driven by the driving piece to be separated from the clamping groove, so that the rotating frame can rotate relative to the position of the clamping hole until the locking pin and the clamping groove are locked again, and the purpose of rotating adjustment of the rotating frame is achieved. If the desk top of the desk is arranged on the rotating frame, the purpose of rotating and adjusting the desk top is achieved, and therefore the effect of conveniently adjusting the angle of the desk top is achieved.

Description

Technical Field

[0001] The utility model relates to the field of human necessities of life, and particularly relates to a gear adjusting mechanism and a desk. Background Art

[0002] Existing desks for students are mainly divided into three categories: solid wood desks, lifting desks, and rubber and plastic desks. Most schools used to use this kind of traditional single desks and double desks made of solid wood. This kind of desk is convenient to process, made of miscellaneous wood, wasting a large amount of wood, and not durable. Currently, only a few schools are using it.

[0003] The lifting desk, also known as an adjustable desk, as the name implies, is a desk and stool with adjustable height. The height of the desk is adjusted by the relevant fasteners of the table legs moving up and down between the sliding shafts to meet the needs of schools and students. The lifting desk is mainly of a steel-plastic structure, with a melamine board desktop and steel pipe parts for the table legs. The relevant parts connecting to the ground are protected by plastic caps.

[0004] The rubber and plastic desk mainly uses rubber and plastic alloy materials, and is a school desk and chair product formed by mechanical molding. Most of these products have a fixed structure and non-adjustable height. However, because of the special materials used, they have good quality, are durable and light, and are also adopted by some schools.

[0005] However, with the development of requirements for desks, the requirements have also increased accordingly. The adjustability of desks is no longer limited to lifting adjustment, but requirements for the angle adjustment of the desktop are put forward to meet the needs of ergonomics. Therefore, this application provides a desk that can perform multi-gear adjustment to solve the above problems. Content of the Utility Model

[0006] The purpose of the utility model is to provide a gear adjusting mechanism and a desk, aiming to improve the problem that the existing desks do not have the function of adjusting the desktop angle.

[0007] To achieve the above purpose, the utility model adopts the following technical solutions: A gear adjusting mechanism, comprising:

[0008] A rotating frame, on which there are card holes, and a plurality of card slots are arranged at intervals on the circumferential side wall of the card holes;

[0009] A rod frame, on which there is a locking pin that can be locked or separated from any one of the card slots; and

[0010] An adjusting plate, which is clamped on the rotating frame at the position of the card hole with the rod frame, and a driving member for driving the locking pin to be separated from or engaged with the card slot is arranged on the adjusting plate.

[0011] Preferably, a protrusion that fits with the card hole is arranged on one side surface of the rod frame, and a decorative shell is sleeved on the other side surface of the rod frame.

[0012] Preferably, at least one locking hole is provided on the adjusting plate, and fixing holes corresponding to the locking holes are provided on the protrusion.

[0013] Preferably, a travel groove is provided on the side wall of the card hole, a limiting protrusion that moves in the travel groove is provided on the outer side surface of the protrusion, the limiting protrusion is disposed opposite to the locking pin, and the arc length of the travel groove is equal to the arc length between the two head and tail card slots.

[0014] Preferably, a sliding groove with a three-stage step is provided on the end surface of the protrusion, the locking pin is disposed in the largest step groove of the sliding groove, and a spring is provided in the middle step groove of the sliding groove; the opening of the sliding groove on the side of the protrusion is disposed opposite to the limiting protrusion.

[0015] Preferably, a slot for the end of the driving member to be snapped into is provided on the locking pin.

[0016] Preferably, the other end of the sliding groove is also open to the protrusion, a fixing protrusion that slides in the sliding groove is provided on the inner end surface of the driving member; a push block that penetrates the adjusting plate is provided on the outer end surface of the driving member, and a strip hole for the push block to move is provided on the adjusting plate, or one end of the driving member penetrates the adjusting plate to form a handle for hand grasping or gripping.

[0017] Preferably, a hook is provided on the adjusting plate.

[0018] Preferably, a locking pin and a return spring sleeved on the locking pin are provided on the rod holder, a locking groove for engaging and locking or separating and moving with the locking pin is provided on the locking pin, and the return spring is provided between the decorative shell and the rod holder;

[0019] A limiting hole for the locking pin to pass through is provided on the decorative shell, and a barb for abutting and limiting or separating from the decorative shell is provided at the end of the locking pin.

[0020] A desk is also provided, including the gear adjustment mechanism as described above.

[0021] After adopting the above technical solution, compared with the background technology, the present utility model has the following advantages:

[0022] 1. By driving the locking pin to separate from the card slot by the driving member, the rotating frame can rotate relative to the position of the card hole until the locking pin is locked with the card slot again, so as to achieve the purpose of rotating and adjusting the rotating frame. If the desktop of the desk is arranged on the rotating frame, the purpose of rotating and adjusting the desktop is achieved, thus forming a convenient effect of adjusting the desktop angle. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 Schematic structural diagram of the gear shifting mechanism according to the present utility model;

[0024] Figure 2 Front view of the gear shifting mechanism according to the present utility model;

[0025] Figure 3 Partial view of the gear shifting mechanism according to the present utility model;

[0026] Figure 4 Schematic structural diagram of the rod frame part of the gear shifting mechanism according to the present utility model;

[0027] Figure 5 Schematic structural diagram of the adjusting plate of the gear shifting mechanism according to the present utility model;

[0028] Figure 6 Schematic structural diagram of the driving part of the gear shifting mechanism according to the present utility model;

[0029] Figure 7 Schematic structural diagram of the gear shifting mechanism according to the present utility model when it has a locking pin;

[0030] Figure 8 Partial view of the gear shifting mechanism according to the present utility model when it has a locking pin;

[0031] Figure 9 Exploded view between the locking pin and the locking bolt of the gear shifting mechanism according to the present utility model.

[0032] Explanation of reference numerals:

[0033] 10, rotating frame; 101, clamping hole; 102, clamping groove; 103, travel groove;

[0034] 20, rod frame; 201, locking bolt; 202, protrusion; 203, spring; 204, decorative shell; 205, locking pin; 206, return spring;

[0035] 2011, slot; 2012, locking groove;

[0036] 2021, fixing hole; 2022, limiting convex block; 2023, sliding groove;

[0037] 2041, limiting hole; 2051, barb; 2052, groove; 2053, inserted tooth;

[0038] 30, adjusting plate; 301, driving part; 302, locking hole; 303, strip hole; 304, hook;

[0039] 3011, fixing convex block; 3012, pushing block; 3013, handle. Detailed implementation mode

[0040] In order to make the purpose, technical solutions and advantages of the present utility model more clear and understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0041] In addition, it should be noted that: the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are all based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element of the present utility model must have a specific orientation. Therefore, it cannot be understood as a limitation to the present utility model.

[0042] When an element is referred to as being "fixed to" or "arranged on" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0043] Unless otherwise clearly defined and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it 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 utility model can be understood according to specific situations.

[0044] Embodiment 1

[0045] Please refer to Figure 1 、 Figure 2 and Figure 3 As shown, this embodiment provides a gear shifting mechanism, including a rotating frame 10, a rod frame 20, and an adjusting plate 30. A clamping hole 101 is provided on the rotating frame 10, and a plurality of clamping grooves 102 are arranged at intervals on the circumferential side wall of the clamping hole 101; a locking pin 201 that is locked or separated from any one of the clamping grooves 102 is provided on the rod frame 20; the adjusting plate 30 and the rod frame 20 are clamped on the rotating frame 10 at the position of the clamping hole 101, and a driving member 301 that drives the locking pin 201 to be separated or engaged with the clamping groove 102 is provided on the adjusting plate 30.

[0046] Specifically, the rod holder 20 and the adjusting plate 30 clamp and cooperate with the rotating frame 10, enabling the rotating frame 10 to rotate through the cooperation of the unlocking lock pin 201 and the card slot 102. Thus, during use, the driving member 301 drives the lock pin 201 to separate from the card slot 102, allowing the rotating frame 10 to rotate relative to the position of the card hole 101 until the lock pin 201 is locked with the card slot 102 again, re-locking the rotating frame 10 to achieve the purpose of rotating and adjusting the rotating frame 10. If the desktop of the desk is set on the rotating frame 10, the purpose of rotating and adjusting the desktop is achieved, thus forming a convenient effect of adjusting the desktop angle.

[0047] As Figure 4 shown, in this embodiment, the rod holder 20 is provided with a protrusion 202 that fits into the card hole 101, and a decorative shell 204 sleeved on the other side of the rod holder 20. Specifically, the protrusion 202 can be inserted into the card hole 101, so as to limit the rotation of the rotating frame 10, making the structural cooperation smoother and improving the practicality. The decorative shell 204 on the rod holder 20 can protect and decorate the rod holder, improve the smoothness of the structure's appearance without sharp corners or edges, enhance safety, and at the same time play a decorative role to improve the aesthetic feeling of the appearance.

[0048] Furthermore, as Figure 5 shown, in this embodiment, at least one locking hole 302 is provided on the adjusting plate 30, and a fixing hole 2021 corresponding to the locking hole 302 is provided on the protrusion 202. Between the adjusting plate 30 and the rod holder 20, they can be locked by bolts, that is, the bolts pass through the locking holes 302 and are locked in the fixing holes 2021 to achieve the purpose of locking. The locking holes 302 on the protrusion 202 can form an avoidance by restricting the rotation arc length of the rotating frame 10. For example, when the rotating frame 10 rotates a distance of 90°, it needs to occupy a relative position of 90°. Thus, between the two 90° ranges, the protrusion 202 can be locked by bolts to form the purpose of avoiding installation.

[0049] As shown Figure 3 and Figure 5 shown, in this embodiment, a travel groove 103 is provided on the side wall of the card hole 101, and a limit protrusion 2022 that moves in the travel groove 103 is provided on the outer side of the protrusion 202. The limit protrusion 2022 is disposed opposite to the lock pin 201, and the arc length of the travel groove 103 is equal to the arc length between the head and tail two card slots 102. The setting of the travel groove 103 and the limit protrusion 2022 can limit the rotation arc length of the rotating frame 10, that is, limit the travel of the rotating frame 10.

[0050] For example, two card slots 102 are provided, and the arc length between the two card slots 102 is equal to the arc length of the travel slot 103. When the limit bump 2022 abuts against one side of the travel slot 103, the locking pin 201 at the opposite end and the card slot 102 are also locked. Such an operation is safe and convenient.

[0051] As Figure 4 shown, in this embodiment, a sliding slot 2023 with a three-stage step is provided on the end face of the protrusion 202. The locking pin 201 is arranged in the largest step slot of the sliding slot 2023, and a spring 203 is arranged in the middle step slot of the sliding slot 2023; the opening of the sliding slot 2023 on one side of the protrusion 202 is arranged opposite to the limit bump 2022. The design of the sliding slot 2023 with a three-stage step structure facilitates the installation of the spring 203 in the middle step slot. The spring 203 provides an elastic force for the locking pin 201, so that the locking pin 201 is firmly abutted in the card slot 102.

[0052] As Figure 4 shown, in this embodiment, a slot 2011 for the end of the driving member 301 to be clamped is provided on the locking pin 201. Through the design of the slot 2011, the driving member 301 can be clamped, so that the driving member 301 and the locking pin 201 are fixed together, for example, fixed by means of bolt locking, bonding or welding, etc., to improve the stability and facilitate driving the movement of the locking pin 201.

[0053] As Figure 4 、 Figure 6 and Figure 7 shown, in this embodiment, the other end of the sliding slot 2023 is also open to the protrusion 202, and a fixing bump 3011 for sliding in the sliding slot 2023 is provided on the inner end face of the driving member 301; a push block 3012 penetrating the adjusting plate 30 is provided on the outer end face of the driving member 301, and a strip hole 303 for the push block 3012 to move is provided on the adjusting plate 30, or one end of the driving member 301 penetrates the adjusting plate 30 to form a handle 3013 for hand grasping or gripping.

[0054] Specifically, the sliding slot 2023 is designed with both ends communicating with the side wall. One end with the locking pin 201 is convenient for the locking pin 201 to be locked with the card slot 102; the other end is for the fixing bump 3011 of the driving member 301 to move, so as to limit the movement of the fixing bump 3011 and the driving member 301 (that is, it will move along the sliding slot 2023), and improve the stability of the movement path.

[0055] Furthermore, the design of the push block 3012 or the handle 3013 on the driving member 301 facilitates people to operate the driving member 301, so as to move in the strip hole 303, realize the unlocking rotation and the clamping and locking of the rotating frame 10, and achieve the purpose of rotating adjustment of the rotating frame 10.

[0056] As Figure 1 and Figure 2 shown, in this embodiment, a hook 304 is provided on the adjusting plate 30. The design of the hook 304 facilitates hanging items, such as woven bags, schoolbags or umbrellas, etc., improving practicality.

[0057] As Figure 7 、 Figure 8 and Figure 9 shown, in this embodiment, a locking pin 205 and a return spring 206 sleeved on the locking pin 205 are provided on the rod holder. The return spring 206 can be arranged at the end section of the locking pin 205, and the head of the locking pin 205 is set as a plane convenient for pressing. A locking groove 2012 for engaging and locking or separating and moving with the locking pin 205 is provided on the locking pin 201. The return spring 206 is arranged between the decorative shell 204 and the rod holder; a groove 2052 for avoiding the locking pin 201 is provided in the middle of the locking pin 205, and an inserting tooth 2053 for engaging with the locking groove 2012 is provided on one side wall of the groove 2052. In this way, the operation of locking or unlocking can be formed by pressing the locking pin 205.

[0058] Specifically, when engaging with the locking pin 205 on the rod holder, by pressing the locking pin 205, the inserting tooth 2053 of the locking pin 205 is separated from the locking groove 2012, and then the locking pin 201 can be pulled to move, so that the locking pin 201 is separated from the card slot, and then the rotating frame can be rotated; after the locking pin 201 engages with another card slot, the locking groove 2012 and the locking pin 205 are re-aligned, and the locking pin 205 is driven by the return spring 206, so that the inserting tooth 2053 of the locking pin 205 is re-inserted into the locking groove 2012 for locking. The effect is achieved that if the locking of the locking pin 205 is not released, the locking pin 201 cannot be pulled by the driving member, thereby improving the safety of use, avoiding the situation of accidental unlocking, and at the same time improving the structural reliability.

[0059] Furthermore, as Figure 8 and Figure 9 shown, a limiting hole 2041 for the locking pin 205 to pass through is provided on the decorative shell 204, and an inverted hook 2051 for abutting and limiting or separating from the decorative shell 204 is provided at the end of the locking pin 205. In order to hide the end of the locking pin 205, a counterbore can be provided on the limiting hole 2041 to accommodate and hide the locking pin 205. The design of the limiting hole 2041 and the inverted hook 2051 can prevent the locking pin 205 from disengaging from the rod holder during reset, and can ensure the structural stability of the locking pin 205.

[0060] Embodiment Two

[0061] This embodiment provides a desk, which includes a gear adjustment mechanism as described in Embodiment 1. In this way, the desktop of the desk can be rotationally adjusted (i.e., angle adjustment) through the gear adjustment mechanism, so that the inclination angle of the table board is more suitable for placing textbooks for reading or for avoidance (for example, when taking a lunch break, avoiding the dumping of the front row of seats), and it has good practicability.

[0062] As mentioned above, the above are only the preferred specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present utility model should be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the protection scope of the claims.

Claims

1. A gear shifting mechanism, characterized in that, Comprising: A rotating frame, on which there are clamping holes, and a plurality of clamping grooves are spaced on the circumferential side wall of the clamping holes; A rod frame, on which there is a locking pin that can be locked or separated from any one of the clamping grooves; and An adjusting plate, which is clamped on the rotating frame at the position of the clamping hole together with the rod frame, and a driving member for driving the locking pin to be separated or engaged with the clamping groove is arranged on the adjusting plate.

2. The gear shift adjusting mechanism according to claim 1, characterized in that: On one side surface of the rod frame, there is a protrusion that fits into the clamping hole, and a decorative shell is sleeved on the other side surface of the rod frame.

3. The gear shifting adjustment mechanism according to claim 2, characterized in that: At least one locking hole is arranged on the adjusting plate, and a fixing hole corresponding to the locking hole is arranged on the protrusion.

4. The gear shifting adjustment mechanism according to claim 3, wherein: A travel groove is arranged on the side wall of the clamping hole, and a limiting protrusion that moves in the travel groove is arranged on the outer side surface of the protrusion. The limiting protrusion is arranged opposite to the locking pin, and the arc length of the travel groove is equal to the arc length between the head and tail two clamping grooves.

5. The gear shifting adjustment mechanism according to claim 4, characterized in that: A three-stage stepped sliding groove is arranged on the end surface of the protrusion. The locking pin is arranged in the largest stepped groove of the sliding groove, and a spring is arranged in the middle stepped groove of the sliding groove; the opening of the sliding groove on one side of the protrusion is arranged opposite to the limiting protrusion.

6. The gear shifting adjustment mechanism according to claim 4, characterized in that: A slot for the end of the driving member to be clamped is arranged on the locking pin.

7. The gear shifting adjusting mechanism according to claim 5, wherein: The other end of the sliding groove is also open to the protrusion, and a fixing protrusion that slides in the sliding groove is arranged on the inner end surface of the driving member; A push block that penetrates the adjusting plate is arranged on the outer end surface of the driving member, and a strip-shaped hole for the push block to move is arranged on the adjusting plate. Alternatively, one end of the driving member penetrates the adjusting plate to form a handle for hand grasping or gripping.

8. The gear shifting adjustment mechanism according to claim 1 or 7, characterized in that: A hook is arranged on the adjusting plate.

9. The gear shifting adjustment mechanism according to claim 2, wherein: A locking pin and a return spring sleeved on the locking pin are arranged on the rod frame. A locking groove for the locking pin to be locked or separated and moved in a locking manner is arranged on the locking pin. The return spring is arranged between the decorative shell and the rod frame; A limiting hole for the locking pin to pass through is arranged on the decorative shell, and a barb for abutting and limiting or separating from the decorative shell is arranged at the end of the locking pin.

10. A desk, characterized in that, Comprising a gear position adjusting mechanism according to any one of claims 1 to 9.

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