Reversible adjusting handrail with locking mechanism

Abstract

The utility model relates to the technical field of seat armrests, and discloses a turnable adjusting armrest with a locking mechanism, which comprises an armrest arm, an armrest plate, a connecting block and a locking rod, the top of the armrest arm is provided with a connecting groove, one side of the connecting groove is provided with a first slot, and the other side of the connecting groove is provided with a second slot. The side, away from the second inserting groove, of the first inserting groove penetrates through the side portion of the armrest arm, the connecting block is installed at the bottom of the armrest plate, the side portion of the connecting block is provided with a rotating shaft, an arc-shaped through groove and a plurality of locking tooth grooves, the arc-shaped through groove is formed around the axis of the rotating shaft, and the locking tooth grooves are formed along the periphery of the arc-shaped through groove and communicate with the arc-shaped through groove; the connecting block is arranged in the connecting groove, the rotating shaft is rotationally connected with the two sides of the connecting groove, locking teeth are arranged on the side portion of one end of the locking rod, the locking rod and the locking teeth sequentially penetrate through the first inserting groove and the arc-shaped through groove to be inserted into the second inserting groove, and the locking teeth are matched with one locking tooth groove. The utility model has the advantages of simple operation and stable structure.

Description

TECHNICAL FIELD

[0001] The utility model relates to chair armrest technical field especially is involved in a kind of reversible adjustable armrest with locking mechanism. BACKGROUND

[0002] At present, chair armrest is installed in the support device of both sides or middle of seat, provides elbow support for user, improves comfort and stability. With the development of society, people's comfort requirement to armrest is higher and higher, so armrest gradually develops from original mechanical fixed type into adjustable type, however, the existing adjustable chair armrest can generally only adjust the height of armrest plate or horizontally adjust the position of armrest plate, cannot turn up or down to adjust the inclination angle of armrest plate, cannot satisfy people's use demand. SUMMARY

[0003] The utility model provides a kind of reversible adjustable armrest with locking mechanism, which is simple and easy to operate, and can prevent accidental adjustment.

[0004] To solve the above technical problems, the utility model provides a kind of reversible adjustable armrest with locking mechanism, including armrest, armrest plate, connecting block and locking rod, the top of the armrest is equipped with connecting groove, one side of the connecting groove is equipped with first slot, the other side of the connecting groove is equipped with the second slot aligned with the first slot, the side of the first slot away from the second slot penetrates the side of the armrest, the connecting block is installed at the bottom of the armrest plate, the side of the connecting block is equipped with rotating shaft, arc-shaped through slot and multiple locking tooth grooves, the arc-shaped through slot is arranged around the axis of the rotating shaft, multiple locking tooth grooves are arranged along the periphery of the arc-shaped through slot and are respectively communicated with the arc-shaped through slot, the connecting block is located in the connecting groove, the rotating shaft is rotatably connected with the two sides of the connecting groove, the arc-shaped through slot is respectively aligned with the first slot and the second slot, one end of the locking rod is equipped with locking tooth, the locking rod and the locking tooth are sequentially inserted into the second slot through the first slot and the arc-shaped through slot, and the locking tooth is matched with one of the locking tooth grooves.

[0005] As a preferred scheme of the utility model, the top of the armrest is equipped with limiting groove, the limiting groove is located on the side of the second slot away from the first slot, and is communicated with the second slot.

[0006] As a preferred scheme of the utility model, the end of the locking rod penetrates the second slot and extends into the limiting groove, one end of the locking rod extending into the limiting groove is equipped with buckle block, and the buckle block is buckled on the side of the limiting groove close to the second slot.

[0007] As a preferred scheme of the utility model, the second slot comprises a first positioning slot and a second positioning slot which are communicated with each other, the first positioning slot is matched with the locking rod, and the second positioning slot is matched with the locking tooth.

[0008] As a preferred scheme of the utility model, the structure of the first slot is same with the structure of the second slot.

[0009] As a preferred scheme of the utility model, one end of the locking rod away from the second slot is stretched out of the first slot, and the one end of the locking rod stretched out of the first slot is connected with a key block.

[0010] As a preferred scheme of the utility model, a reset spring is sleeved on the locking rod, and the reset spring is located between the key block and the side of the armrest.

[0011] As a preferred scheme of the utility model, a convex ring is arranged on the side of the armrest close to the first slot, and the key block is inserted on the inner hole of the convex ring.

[0012] Compared with the prior art, the utility model discloses a kind of rotatable adjustable armrests with locking mechanism, which has the beneficial effects that under normal circumstances, locking tooth and locking tooth groove cooperate, to limit the rotation of rotating block, i.e. armrest plate is in the state of locking, it is helpful to keep armrest plate in the position, and the structure is stable;When needing to be adjusted, push the locking rod to move in the direction close to the second slot, until the locking tooth and the locking tooth groove are separated, at this time, connecting block and armrest plate can rotate around the axis of rotation axis, i.e. armrest plate is in the state of unlocking, and the rotation of armrest plate can be realized;The utility model is easy to operate, and the structure is stable. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is the structure diagram of the utility model;

[0014] Figure 2 It is the broken structure diagram of the connecting block and the connecting groove connection of the utility model;

[0015] Figure 3 It is the sectional view of the connecting block and the connecting groove connection of the utility model;

[0016] Figure 4 It is the structure diagram of the connecting groove of the utility model;

[0017] Figure 5 It is the structure diagram of the connecting block of the utility model;

[0018] Figure 6 It is the structure diagram of the locking rod of the utility model;

[0019] Figure 7Is the handrail plate structure diagram after turning over adjustment of the utility model;

[0020] In the drawing, 1, handrail arm;11, connecting groove;12, first slot;13, second slot;14, limit groove;15, first positioning groove;16, second positioning groove;17, convex ring;2, handrail plate;3, connecting block;31, rotating shaft;32, arc-shaped through slot;33, locking tooth groove;4, locking rod;41, locking tooth;42, buckle block;43, key block;44, reset spring. DETAILED DESCRIPTION

[0021] The specific embodiments of the utility model are described in further detail below in combination with the drawings and examples. The following examples are used to illustrate the utility model, but are not used to limit the scope of the utility model.

[0022] In the description of the utility model, it should be understood that the orientation or position relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like in the utility model is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the utility model, in addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0023] As Figures 1-7As shown, the utility model discloses a kind of rotatable adjustable handrails with locking mechanism of preferred embodiment, including handrail arm 1, handrail plate 2, connecting block 3 and locking lever 4, the top of handrail arm 1 is equipped with connecting groove 11, one side of connecting groove 11 is equipped with first slot 12, the other side of connecting groove 11 is equipped with the second slot 13 aligned with first slot 12, the side of first slot 12 away from second slot 13 penetrates the side of handrail arm 1, connecting block 3 is installed at the bottom of handrail plate 2, the side of connecting block 3 is equipped with rotating shaft 31, arc through slot 32 and multiple locking teeth grooves 33, arc through slot 32 is arranged around the axis of rotating shaft 31, arc through slot 32 penetrates the two sides of connecting block 3, multiple locking teeth grooves 33 are arranged along the periphery of arc through slot 32 and respectively communicated with arc through slot 32, connecting block 3 is in connecting groove 11, rotating shaft 31 is rotatably connected with the two sides of connecting groove 11,It can be understood that, the two sides of connecting block 3 are equipped with rotating shaft 31, and the two rotating shafts 31 are rotatably connected with the two sides of connecting groove 11, arc through slot 32 is aligned with first slot 12 and second slot 13 respectively, one end side of locking lever 4 is equipped with locking tooth 41, locking lever 4 and locking tooth 41 are inserted into second slot 13 in sequence through first slot 12 and arc through slot 32, locking tooth 41 cooperates with one of locking teeth grooves 33, and forms locking mechanism,It can be understood that, the side of second slot 13 away from locking lever 4 is provided with enough space to allow locking lever 4 to move in the direction close to second slot 13, so that locking tooth 41 is separated from locking teeth groove 33, to realize unlocking, for example, the side of second slot 13 away from first slot 12 penetrates the side of handrail arm 1.

[0024] The working principle of the embodiment is that: connecting block 3 is installed at the bottom of handrail plate 2, i.e. handrail plate 2 can rotate with connecting block 3;Under normal circumstances, locking tooth 41 cooperates with locking teeth groove 33, to limit the rotation of rotating block, i.e. handrail plate 2 is in the state of locking, which helps handrail plate 2 to keep in the established position, and the structure is stable;When it is necessary to rotate and adjust, locking lever 4 is pushed to move in the direction close to second slot 13 until locking tooth 41 is separated from locking teeth groove 33, at this time, connecting block 3 and handrail plate 2 can rotate around the axis of rotating shaft 31, i.e. handrail plate 2 is in the state of unlocking, and handrail plate 2 can be rotated and adjusted;When rotating block rotates to the position of another locking teeth groove 33 corresponding to the position of locking tooth 41, locking lever 4 and locking tooth 41 are reset (restored to the initial position), locking tooth 41 cooperates with the locking teeth groove 33, so that handrail plate 2 returns to the state of locking, and the rotation and adjustment of handrail plate 2 is completed;The embodiment is easy to operate, and the structure is stable.

[0025] For example, the top of the armrest 1 is provided with a limiting groove 14. The limiting groove 14 is located on the side of the second slot 13 away from the first slot 12 and is connected to the second slot 13. The setting of the limiting groove 14 provides space for the locking rod 4 to move closer to the second slot 13. It can be understood that there is a sufficient gap between the end of the locking rod 4 near the limiting groove 14 and the side of the limiting groove 14 away from the second slot 13 to ensure that the locking rod 4 can move a sufficient distance towards the second slot 13, that is, to ensure that the locking tooth 41 can move to separate from the locking tooth groove 33. At the same time, the setting of the limiting groove 14 plays a limiting role to prevent the locking rod 4 from moving too far towards the second slot 13.

[0026] For example, the end of the locking rod 4 passes through the second slot 13 and extends into the limiting groove 14. One end of the locking rod 4 that extends into the limiting groove 14 is provided with a latching block 42. The latching block 42 is fastened to the side of the limiting groove 14 near the second slot 13, thereby preventing the locking rod 4 from moving towards the first slot 12. It should be noted that the latching block 42 has a certain elastic deformation capability. When the end of the locking rod 4 is inserted into the second slot 13, the latching block 42 undergoes elastic deformation and narrows to ensure that the end of the locking rod 4 can be inserted into the second slot 13. When the end of the locking block extends into the limiting groove 14, the latching block 42 returns to its original shape and is fastened to the side wall of the limiting groove 14, thereby playing a limiting role.

[0027] For example, the second slot 13 includes a first positioning groove 15 and a second positioning groove 16 that are interconnected. The first positioning groove 15 cooperates with the locking rod 4, and the second positioning groove 16 cooperates with the locking tooth 41. When the locking rod 4 moves to the point where the locking tooth 41 disengages from the locking tooth groove 33, the locking rod 4 and the locking tooth 41 remain engaged with the second slot 13, thereby preventing the locking rod 4 from rotating, that is, preventing the locking rod 4 from being misaligned, and ensuring that the locking rod 4 and the locking tooth 41 can be reset normally.

[0028] For example, the structure of the first slot 12 is the same as that of the second slot 13, that is, the first slot 12 also includes a first positioning groove 15 and a second positioning groove 16, so that during assembly, the locking rod 4 and the locking tooth 41 can be positioned to pass through the first slot 12, which facilitates assembly. Generally, during use, the second positioning groove 16 of the first slot 12 does not cooperate with the locking tooth 41, which helps to reduce the distance that the locking rod 4 needs to move during the unlocking operation.

[0029] For example, the end of the locking lever 4 away from the second slot 13 extends out of the first slot 12, and the end of the locking lever 4 extending out of the first slot 12 is fixedly connected to a button block 43. By pressing the button block 43, the locking lever 4 can be pushed, which facilitates the unlocking operation.

[0030] For example, a return spring 44 is sleeved on the locking lever 4. The return spring 44 is located between the button block 43 and the side of the armrest 1. When the button block 43 is pressed, the button block 43 and the locking lever 4 will move towards the second slot 13. At this time, the return spring 44 is compressed and generates elastic force. After the button block 43 is released, under the elastic force of the return spring 44, the button block 43 and the locking lever 4 return to their original positions, so that the locking tooth 41 engages with the locking tooth groove 33. That is, the setting of the return spring 44 can facilitate the reset of the button block 43 and the locking lever 4, thereby facilitating the return of the armrest 2 to the locked state.

[0031] For example, the armrest 1 has a protruding ring 17 on the side near the first slot 12, and the button block 43 is inserted into the inner hole of the protruding ring 17, so that the reset spring 44 is hidden inside the protruding ring 17, which is simple and beautiful in appearance. In addition, the button block 43 is set to be non-circular. By the cooperation between the button block 43 and the inner hole of the protruding ring 17, it can prevent the button block 43 from driving the locking rod 4 to rotate.

[0032] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. A flip-up adjustable handrail with a locking mechanism, characterized in that: The device includes an armrest, an armrest board, a connecting block, and a locking rod. The top of the armrest has a connecting groove, one side of which has a first slot, and the other side of which has a second slot aligned with the first slot. The side of the first slot away from the second slot extends through the side of the armrest. The connecting block is installed at the bottom of the armrest board. The side of the connecting block has a rotating shaft, an arc-shaped through groove, and multiple locking tooth grooves. The arc-shaped through groove is arranged around the axis of the rotating shaft, and the multiple locking tooth grooves are arranged along the outer periphery of the arc-shaped through groove and communicate with it respectively. The connecting block is located in the connecting groove. The rotating shaft is rotatably connected to both sides of the connecting groove. The arc-shaped through groove is aligned with the first slot and the second slot respectively. One end of the locking rod has a locking tooth. The locking rod and the locking tooth pass through the first slot and the arc-shaped through groove in sequence and are inserted into the second slot. The locking tooth engages with one of the locking tooth grooves.

2. The flip-up adjustable armrest with locking mechanism according to claim 1, characterized in that: The top of the armrest is provided with a limiting groove, which is located on the side of the second slot away from the first slot and is in communication with the second slot.

3. The flip-up adjustable armrest with locking mechanism according to claim 2, characterized in that: The end of the locking rod passes through the second slot and extends into the limiting groove. One end of the locking rod that extends into the limiting groove is provided with a latching block, which is fastened to the side of the limiting groove near the second slot.

4. The flip-up adjustable armrest with locking mechanism according to claim 1, characterized in that: The second slot includes a first positioning slot and a second positioning slot that are interconnected. The first positioning slot engages with the locking rod, and the second positioning slot engages with the locking tooth.

5. The flip-up adjustable armrest with locking mechanism according to claim 4, characterized in that: The structure of the first slot is the same as that of the second slot.

6. The flip-up adjustable armrest with locking mechanism according to claim 1, characterized in that: The locking lever extends out of the first slot at one end away from the second slot, and a button block is connected to the end of the locking lever extending out of the first slot.

7. The flip-up adjustable armrest with locking mechanism according to claim 6, characterized in that: A reset spring is fitted onto the locking rod, and the reset spring is located between the button block and the side of the armrest.

8. The flip-up adjustable armrest with locking mechanism according to claim 7, characterized in that: The armrest arm has a protruding ring on the side near the first slot, and the button block is inserted into the inner hole of the protruding ring.

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