Bolt hidden type chair headrest rotating mechanism

Abstract

The utility model discloses a bolt hidden type chair headrest rotating mechanism. The bolt hidden type chair headrest rotating mechanism comprises a connecting beam connected with a chair back and a headrest frame connected with the connecting beam. The headrest frame is provided with a mounting beam, the back of the mounting beam is provided with a mounting groove, the front of the mounting beam is opened and covered with a beam cover, two ends of the mounting groove are provided with rotary adjusting notches, the front and back of the groove are first arc-shaped surfaces, and the first arc-shaped surface of the front is provided with a limiting lock block. A connecting section at the head of the connecting beam can extend into the mounting groove to be in rotary fit, a connecting column at the end of the connecting section penetrates through the rotary adjusting notch, a pressing piece is fixed through a bolt to achieve connection of the connecting column and the rotary adjusting notch, a second arc-shaped surface of the pressing piece is matched with the first arc-shaped surface, and an arc-shaped gear groove matched with the limiting locking block is formed in the second arc-shaped surface. Rotation adjusting gaps are reserved among the connecting column, the mounting groove and the rotation adjusting groove opening. According to the mechanism, a connecting structure can be hidden, the attractiveness of a chair is improved, the collision risk is reduced, and flexible rotating adjustment and multi-gear adjustment of the headrest are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to chair technical field, specifically is a bolt hidden type chair headrest rotating mechanism. BACKGROUND

[0002] In the design of the seat, as the key component of improving the comfort and safety of the user, the function and appearance optimization of the headrest has been concerned. Especially in the product field of office chair, household chair and other products pursuing high quality and high aesthetic degree, the design details of the headrest are very important.

[0003] At present, the common chair headrest rotating connection structure adopts the rotating shaft to connect. Although this traditional connection mode can realize the rotating function of the headrest, it has obvious defects. The rotating shaft and the bolt for fixing are usually in the state of external leakage, which not only destroys the simple and smooth appearance of the chair as a whole, reduces the aesthetic degree of the product, but also may cause the risk of bumping due to the external leakage components, and affects the experience of the user. In the current situation of paying attention to the overall design feeling and user experience, this traditional connection mode is difficult to meet the demand of the market for high quality chair. Under this background, an innovative headrest rotating connection mechanism is urgently needed, which can realize the flexible rotating adjustment of the headrest and effectively solve the problem of external leakage of the connection components, and improve the overall aesthetic and practicality of the chair. SUMMARY

[0004] In view of the deficiencies in the background art, the utility model provides a bolt hidden type chair headrest rotating mechanism.

[0005] The technical scheme adopted by the utility model is: a bolt hidden type chair headrest rotating mechanism, which comprises a connecting beam for connecting with a chair back and a headrest frame connected with the connecting beam, an installation beam is arranged on the headrest frame, an installation groove is arranged on the middle back of the installation beam, an opening is arranged on the front face, a beam cover is covered on the opening, rotating adjustment notches are arranged at both ends of the installation groove, the front face and the back face of the installation groove are both arc surfaces one, and a limiting lock block is arranged on the arc surface one on the front face;

[0006] The head of the connecting beam has a connecting section capable of extending into and rotating with the installation groove, a connecting column is arranged on the end of the connecting section, a pressing sheet is fixed on the connecting column through a bolt, the connecting column connects the connecting beam and the installation beam through the pressing sheet and the rotating adjustment notches, the pressing sheet has an arc surface two matched with the above-mentioned arc surface one, and a plurality of arc position notches matched with the above-mentioned limiting lock block are arranged at intervals on the arc surface two;

[0007] A rotating adjustment gap is left between the connecting column and the installation groove, and between the connecting column and the rotating adjustment notches.

[0008] Further, the width of the connecting section gradually thickens from left to right, and the top of the connecting section is an arc-shaped surface three that matches the arc-shaped surface one.

[0009] Further, the arc-shaped gear slot is provided with five.

[0010] Further, the front ends of the mounting beam are provided with connecting holes, and the beam cover is provided with plug-in columns connected with the connecting holes.

[0011] Further, the plug-in column outer wall is provided with a plurality of convex ribs at equal intervals.

[0012] The beneficial effects of the present application are:

[0013] 1. Improve the appearance: cleverly cover the tablet and bolt in the opening of the front, avoid the connection structure leakage, make the overall appearance of the chair more simple and smooth, meet the high requirements of modern consumers for the appearance of the seat, whether in the office or in the home environment, can better integrate into the overall decoration style, improve the overall quality of the product.

[0014] 2. Enhance safety: solve the risk of bumping caused by the leakage of the connecting part, provide a safer use environment for the user, especially in the scene where people frequently move, effectively reduce the possibility of accidental injury.

[0015] 3. Flexible rotation adjustment: the rotation adjustment gap is left between the connecting column, the mounting groove and the rotation adjustment slot, so that the headrest can realize flexible rotation adjustment, the user can easily adjust the angle of the headrest according to the demand, greatly improve the comfort of use, meet the individual needs of different users in different scenes.

[0016] 4. Multi-gear adjustment: by setting multiple arc-shaped gear slots on the tablet, rotating the mounting beam on the headrest frame, connecting the limit lock block to different arc-shaped gear slots, the multi-gear adjustment of the headrest can be realized.

[0017] In addition to the purposes, features and advantages described above, the present application has other purposes, features and advantages. The present application will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 The structural schematic diagram of the present application.

[0019] Figure 2 The explosion schematic diagram of the present application.

[0020] Figure 3 The explosion schematic diagram of the present application from another perspective.

[0021] Figure 4 Structure diagram of connecting beam.

[0022] Figure 5 Structure diagram of Figure 4 Enlarged diagram at A.

[0023] Figure 6 Structure diagram of back of headrest frame.

[0024] Figure 7 Structure diagram of front of headrest frame.

[0025] Figure 8 Structure diagram of beam cover.

[0026] Figures 1-8 Beam, 2 headrest frame, 3 mounting beam, 4 mounting slot, 5 opening, 6 beam cover, 7 rotation adjustment slot, 8 arc surface one, 9 limit lock block, 10 connecting section, 11 connecting column, 12 bolt, 13 pressing piece, 14 arc surface two, 15 arc gear slot, 16 arc surface three, 17 connecting hole, 18 plug-in column, 19 convex rib. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0028] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship, movement condition, etc. between the components in a certain specific posture (as shown in the drawings). If the specific posture changes, the directional indications also change accordingly.

[0029] The utility model provides a bolt hidden type chair headrest rotation mechanism.

[0030] In the embodiment, with reference to Figures 1-8 The bolt hidden type chair headrest rotation mechanism comprises a connecting beam 1 for being connected with a chair back and a headrest frame 2 connected with the connecting beam 1, the headrest frame 2 is provided with a mounting beam 3, the mounting beam 3 is provided with a mounting slot 4 on the middle back, and is provided with an opening 5 on the front, the opening 5 is covered with a beam cover 6, both ends of the mounting slot 4 are provided with a rotation adjustment slot 7, the front and back of the mounting slot 7 are arc surface one 8, and the arc surface one on the front is provided with a limit lock block 9.

[0031] The head of the connecting beam has a connecting section 10 capable of extending into and rotatingly matching with the mounting groove, an end of the connecting section 10 is provided with a connecting column 11, the connecting column 11 is fixed with a pressing plate 13 through a bolt 12, the connecting column passes through the rotating adjustment slot to connect the connecting beam and the mounting beam through the pressing plate, the pressing plate has an arc surface two 14 matched with the arc surface one, and a plurality of arc position grooves 15 matched with the limiting lock block are arranged at the arc surface two 14.

[0032] The connecting column and the mounting groove, and the connecting column and the rotating adjustment slot are left with a rotating adjustment gap.

[0033] In the above technical solution, the mounting beam on the headrest frame forms a closed space through the opening matched with the beam cover, and the rotating adjustment slots at the two ends of the mounting groove are used for the connecting column to pass through. The connecting section of the connecting beam extends into the mounting groove, the connecting column passes through the rotating adjustment slot and is fixed with the pressing plate through the bolt, the arc surface two of the pressing plate is matched with the arc surface one of the mounting groove, and the arc position grooves on the arc surface two are matched with the limiting lock block. The rotating adjustment gap between the connecting column and the mounting groove and the rotating adjustment slot enables the headrest frame to be rotatably adjusted around the connecting beam. In the process of rotating adjustment, the limiting lock block is correspondingly matched with the arc position grooves at different positions to realize multi-position adjustment.

[0034] After the above technical solution is adopted, the bolt and the pressing plate can be hidden in the opening of the mounting beam, the appearance is improved, the risk of collision is reduced, and the safety is enhanced. The headrest can be rotatably adjusted flexibly to meet the individualized needs. Meanwhile, the limiting lock block and the arc position grooves are matched to realize positioning of the rotating angle of the headrest, prevent the headrest from being randomly rotated, and further improve the use experience.

[0035] Specifically, the width of the connecting section gradually thickens from left to right, and the top of the connecting section is an arc surface three 16 matched with the arc surface one.

[0036] In the embodiment, the width of the connecting section gradually thickens from left to right, the gradual change design makes the matching with the mounting groove more stable, increases the strength of the connecting section, the arc surface three at the top is matched with the arc surface one of the mounting groove, and in the rotating process, the arc surface three can better match the shape of the mounting groove, and the smoothness of the headrest rotation is ensured.

[0037] Specifically, the arc position grooves are provided with five.

[0038] In the embodiment, five arc-shaped position slots are arranged on the tablet, and limit lock blocks on the arc-shaped surface of the installation slot are matched with the arc-shaped position slots. When the user rotates the headrest, the limit lock blocks will fall into different arc-shaped position slots in sequence, thereby realizing the locking of different rotating angles. The arrangement of the multiple arc-shaped positions provides the user with more choices of the angle adjustment of the headrest, thereby meeting the needs in different body postures and use scenarios.

[0039] Specifically, the front ends of the installation beam are provided with connecting holes 17, and the beam cover is provided with plug-in columns 18 connected with the connecting holes 17.

[0040] In the embodiment, the connecting holes at the front ends of the installation beam are matched with the plug-in columns on the beam cover. When the beam cover is installed, the plug-in columns are inserted into the connecting holes in alignment, thereby realizing the connection between the beam cover and the installation beam and closing the opening at the front of the installation beam.

[0041] Specifically, the plug-in columns are provided with convex ribs 19 at equal intervals on the outer wall.

[0042] In the embodiment, when the plug-in columns are inserted into the connecting holes of the installation beam, the convex ribs on the outer wall of the plug-in columns are in close contact with the inner wall of the connecting holes, thereby increasing the friction between the plug-in columns and the connecting holes and further enhancing the firmness of the connection between the beam cover and the installation beam.

[0043] Skilled persons should know that although the utility model has been described according to the above specific embodiments, the utility model idea is not limited to the utility model, and any modification using the utility model idea will be included in the patent protection range.

Claims

1. A bolt-hidden type chair headrest rotating mechanism comprising a connecting beam for connection with a chair back and a headrest frame connected with the connecting beam, characterized in that: The headrest frame is provided with a mounting beam, the middle part of the back of the mounting beam is provided with a mounting slot, the front is provided with an opening, the opening is covered with a beam cover, the two ends of the mounting slot are provided with rotary adjusting slots, the front and back of the mounting slot are both arc surfaces, the front arc surface is provided with a limiting lock block; The head of the connecting beam has a connecting section which can extend into and rotate with the mounting slot, the end of the connecting section is provided with a connecting column, the connecting column is fixed with a pressing plate through a bolt, the connecting beam and the mounting beam are connected through the pressing plate by the connecting column passing through the rotary adjusting slot, the pressing plate has an arc surface two which is matched with the arc surface one, the arc surface two is provided with a plurality of arc gear slots which are matched with the limiting lock block at intervals; The connecting column and the mounting slot, and the connecting column and the rotary adjusting slot are left with rotary adjusting gaps.

2. The hidden bolt chair headrest rotation mechanism of claim 1, wherein: The width of the connecting section gradually increases from left to right, and the top of the connecting section is an arc surface three which is matched with the arc surface one.

3. The hidden bolt chair headrest rotation mechanism of claim 1, wherein: The arc gear slots are provided with five.

4. The hidden bolt chair headrest rotation mechanism of claim 1, wherein: The front of the mounting beam is provided with connecting holes at both ends, the beam cover is provided with a plug-in column which is connected with the connecting holes.

5. The hidden bolt chair headrest rotation mechanism of claim 4, wherein: A plurality of convex edges are arranged on the outer wall of the plug-in column at equal intervals.

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