Turnover headrest

Abstract

The utility model relates to a turnover headrest, which is characterized by comprising a headrest support, a headrest seat and a backrest, the connecting pieces are arranged on the two opposite sides of the headrest support in a penetrating mode, and the headrest support and the connecting pieces can be adjusted in a relative rotating mode; the connecting piece is arranged on the headrest support, the damping guide sleeve is arranged at the rotating connecting position of the connecting piece and the headrest support, the damping guide sleeve is in interference fit with the connecting piece, the damping guide sleeve is connected with the headrest support in a limiting mode, overturning is smooth, and the shaking amount is small.

Description

Technical Field

[0001] The utility model relates to the technical field of headrest installation, in particular to a folding headrest. Background Art

[0002] The car headrest is a driving comfort configuration product and a safety protection product. When resting, you can lean your head against the car headrest to relieve neck fatigue. The headrest can also protect your left and right sides to protect the fragile neck and head of the human body.

[0003] However, different drivers have different usage habits, so the headrest often needs to be adjusted. In the existing automobile headrest, there is a gap between the headrest and the rotating shaft, which makes the headrest shake a lot during use or during the adjustment of the headrest, resulting in abnormal noise when the headrest is folded. When in use, the headrest shakes a lot and the flipping process is too fast, which makes the user feel bad. Utility Model Content

[0004] The purpose of the utility model is to overcome the defects of the prior art and provide a folding headrest. A damping guide sleeve is arranged between the headrest bracket and the connecting piece. The damping guide sleeve is used to reduce the shaking of the headrest when it rotates, increase the comfort during use, and effectively control the flipping speed.

[0005] The technical solution to achieve the above purpose is a folding headrest, comprising:

[0006] Headrest bracket;

[0007] Connecting pieces passing through opposite sides of the headrest bracket, wherein the headrest bracket and the connecting pieces are relatively rotatable and adjustable; and

[0008] A damping guide sleeve is arranged between the connecting member and the headrest bracket and is limitedly connected to the headrest bracket. The damping guide sleeve and the connecting member are interference-fitted so that interference matching is generated between the damping guide sleeve and the connecting member.

[0009] Furthermore, the connecting member passes through the damping guide sleeve, and the inner surface of the damping guide sleeve is provided with a portion protruding toward the connecting member, so that the damping guide sleeve and the connecting member are interference fit.

[0010] Furthermore, foldable guide sleeve ribs are formed at both ends of the damping guide sleeve, and the damping guide sleeve is installed on the headrest bracket. The guide sleeve ribs are folded to be perpendicular to the damping guide sleeve so that the damping guide sleeve and the headrest bracket are axially limited and connected.

[0011] Furthermore, a plurality of guide sleeve ribs are provided, and the plurality of guide sleeve ribs are spaced apart along the two end edges of the damping guide sleeve.

[0012] Further, a Teflon coating is applied to the inner surface of the damping guide sleeve.

[0013] Further, a plurality of weakening holes are formed at intervals in the circumferential direction of the damping guide sleeve.

[0014] Further, the damping guide sleeve is disposed on at least one of the two sides of the headrest bracket.

[0015] Further, a left sheet metal is installed on the side of the headrest bracket, and the left sheet metal is formed with a first threading section corresponding to the connecting member;

[0016] A right sheet metal is installed on the side of the headrest bracket away from the left sheet metal. The right sheet metal is formed with a second threading section corresponding to the first threading section, and the connecting member is threaded through the first threading section and the second threading section.

[0017] Further, a rotatable pawl is disposed inside the headrest bracket.

[0018] A first cam is fixedly installed on the connecting member. The first cam is formed with a plurality of clamping grooves corresponding to the pawl. By rotating the pawl, the pawl is clamped in the corresponding clamping groove to fix the headrest bracket.

[0019] Further, a rotatable and adjustable unlocking handle is installed on the side of the headrest bracket, and the unlocking handle is controllably connected to the pawl.

[0020] Compared with the prior art, the present utility model has the following beneficial effects:

[0021] 1. By providing a damping guide sleeve between the headrest bracket and the connecting member, the shaking is reduced.

[0022] 2. A Teflon coating is provided on the damping guide sleeve to increase the lubrication effect between the damping guide sleeve and the connecting member, so as to reduce the abnormal noise generated during rotation.

[0023] 3. The speed is stable during the flipping process. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic structural diagram of the use state of a folding headrest according to the present utility model.

[0025] Figure 2 It is a schematic structural diagram of a folding headrest according to the present utility model in a flipping state.

[0026] Figure 3 It is an exploded structural schematic diagram of Embodiment 1 of a folding headrest according to the present utility model.

[0027] Figure 4Exploded view structure diagram of Embodiment 1 of a folding headrest of the present utility model from another perspective.

[0028] Figure 5 Overall structure diagram of a damping guide sleeve of a folding headrest of the present utility model.

[0029] Figure 6 For Figure 5 Cross-sectional view taken along A-A in

[0030] Figure 7 Exploded view state diagram of Embodiment 2 of a folding headrest of the present utility model.

[0031] Figure 8 Exploded view structure diagram of Embodiment 2 of a folding headrest of the present utility model from another perspective.

[0032] Legend: 1. Insert rod; 2. Unlock handle; 3. Damping guide sleeve; 31. Guide sleeve edge; 32. Weakening hole; 4. Left sheet metal; 5. Connecting piece; 6. Second cam; 7. Pawl; 8. Ratchet shaft; 9. Connecting shaft; 10. Cam spring; 11. First cam; 12. Tooth plate spring; 13. Right sheet metal; 14. Guide sleeve. Detailed implementation manners

[0033] The present utility model will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0034] Refer to Figure 1 , the present utility model provides a folding headrest, which includes a headrest bracket, a connecting piece 5 and a damping guide sleeve 3; wherein the connecting piece 5 passes through the headrest bracket so that the connecting piece 5 and the headrest bracket can be adjusted rotatably. A damping guide sleeve 3 is provided at the rotational connection between the connecting piece 5 and the headrest bracket. The damping guide sleeve 3 is connected to the headrest bracket in a limiting manner, and the damping guide sleeve 3 and the connecting piece 5 are in interference fit, so that an interference match is generated between the damping guide sleeve 3 and the connecting piece 5. Based on this, when the headrest is rotated, the headrest bracket will drive the damping guide sleeve 3 to rotate relative to the connecting piece 5 together, and the damping guide sleeve 3 and the connecting piece 5 are in interference fit, so that the damping guide sleeve 3 will be subject to a certain resistance when rotating, thereby reducing the shaking generated when the headrest rotates and improving the comfort during use.

[0035] Furthermore, to facilitate rotation, the connecting piece is a tubular structure.

[0036] Therefore, the present utility model provides a folding headrest that can reduce shaking during rotation. As shown in Figure 2 , during use, an insert rod 1 can be provided at both ends of the connecting piece 5, and by inserting the insert rod 1 into the backrest of the seat, the installation of the folding headrest can be realized, making the installation of the folding headrest convenient.

[0037] Refer to Figure 5 and Figure 6 Furthermore, the damping guide sleeve 3 is formed with an outer surface a and an inner surface b. A part of the inner surface b of the damping guide sleeve 3 protrudes towards the connecting member 5. After the connecting member 5 passes through the damping guide sleeve 3, the protruding part of the damping guide sleeve 3 is in close fit with the connecting member 5, so that the damping guide sleeve 3 and the connecting member 5 are in interference fit.

[0038] Still further, the thickness H1 of the part of the damping guide sleeve 3 near both ends is smaller than the thickness H2 of the middle protruding part of the damping guide sleeve. The middle protruding part of the damping guide sleeve 3 is thickened, and the thickening is towards the inner surface b, so that the protruding part of the damping guide sleeve 3 is more firm. The through space formed by enclosing the protruding part is slightly smaller than the diameter of the connecting member, thereby avoiding difficult rotation due to excessive interference between the connecting member 5 and the damping guide sleeve 3.

[0039] In another preferred embodiment, a part of the inner surface of the damping guide sleeve 3 protrudes towards the connecting member 5 to form a rib. The ribs can be arranged at intervals along the inner surface of the damping guide sleeve 3, and can also be arranged in one or more circles or in a spiral shape along the inner surface of the damping guide sleeve 3. The setting of the ribs enables the damping guide sleeve 3 to be in close contact with the connecting member 5, which can not only generate a certain resistance to the rotation of the damping guide sleeve 3, but also not completely limit the rotational adjustment of the damping guide sleeve 3.

[0040] Furthermore, the two ends of the damping guide sleeve 3 are formed with foldable guide sleeve flanges 31. When the damping guide sleeve 3 is installed on the headrest bracket, the guide sleeve flanges 31 are folded to be perpendicular to the damping guide sleeve 3, so that the damping guide sleeve 3 and the headrest bracket are axially limited and connected. Specifically, the damping guide sleeve 3 is inserted through the headrest bracket, and the end of the damping guide sleeve 3 is located inside and outside the headrest bracket. Then the guide sleeve flanges 31 are folded so that the guide sleeve flanges 31 are in contact with the corresponding inner and outer sides of the headrest bracket, realizing the limited connection between the damping guide sleeve 3 and the headrest bracket. Preferably, the headrest bracket is provided with a connection hole, and the damping guide sleeve 3 is embedded in the connection hole. Specifically, the outer surface a of the damping guide sleeve 3 is in contact with the hole wall of the connection hole of the headrest bracket. The two ends of the damping guide sleeve 3 are located on both sides of the connection hole. Then the guide sleeve flanges 31 are folded so that the guide sleeve flanges 31 are in contact with the headrest bracket at the connection hole, and thus the damping guide sleeve 3 is limited and connected to the headrest bracket.

[0041] Preferably, the guide sleeve flanges 31 are provided at the two ends of the damping guide sleeve 3. Initially, the guide sleeve flanges 31 are in a horizontal state for easy passing through the connection hole on the headrest bracket, and then the guide sleeve flanges 31 are folded into a vertical state.

[0042] Furthermore, a plurality of guide sleeve edges 31 are provided on the guide sleeve 3, and the plurality of guide sleeve edges 31 are arranged at intervals along the two ends of the damping guide sleeve 3. The guide sleeve edges 31 are folded to make the plurality of guide sleeve edges 31 fit against the side of the headrest bracket, so as to better limit the damping guide sleeve 3.

[0043] Furthermore, a Teflon coating is applied to the inner surface of the damping guide sleeve 3. This Teflon coating plays a lubricating role, thus avoiding abnormal noise or smooth rotation when the connecting member 5 rotates within the damping guide sleeve 3.

[0044] Furthermore, a plurality of weakening holes 32 are formed at intervals in the circumferential direction of the damping guide sleeve 3. When the connecting member 5 passes through the damping guide sleeve 3, the protruding part of the damping guide sleeve 3 is squeezed, and the weakening holes 32 are formed to facilitate the deformation of the damping guide sleeve 3.

[0045] Furthermore, the damping guide sleeve 3 is provided on at least one of the two sides of the headrest bracket.

[0046] In a preferred embodiment: Two damping guide sleeves 3 are provided, and the damping guide sleeves 3 are arranged at the rotational connection parts on the opposite sides of the headrest bracket, and the connecting member 5 passes through the two damping guide sleeves 3.

[0047] Refer to Figures 7 to 8 , in another preferred embodiment: One damping guide sleeve 3 is provided, and the damping guide sleeve 3 is arranged at the rotational connection part on one side of the headrest bracket, and a common guide sleeve 14 is used at the rotational connection part on the other side of the headrest bracket, and the connecting member 5 passes through the damping guide sleeve 3 and the guide sleeve 14. Refer to Figures 1 to 4 , furthermore, the headrest bracket includes a left sheet metal 4 and a right sheet metal 13 oppositely arranged to the left sheet metal 4. The left sheet metal 4 forms a first through section corresponding to the connecting member 5; the right sheet metal 13 forms a second through section corresponding to the first through section, and the connecting member 5 passes through the first through section and the second through section.

[0048] The first through section and the second through section are tubular, and the dimensions are adapted to the dimensions of the damping guide sleeve 3. The damping guide sleeve 3 can be embedded in the first through section and the second through section, and the guide sleeve flanges 31 provided at both ends are located at both ends of the corresponding first through section and second through section.

[0049] Furthermore, guide sleeve edges 31 are provided at both ends of the damping guide sleeve 3. When installing the damping guide sleeve 3 in the first through section or the second through section, the guide sleeve edge 31 on one side can be first turned up to be perpendicular to the damping guide sleeve 3, and the damping guide sleeve 3 is inserted into the first through section or the second through section. The turned-up guide sleeve edge 31 abuts against the end of the first through section or the second through section, and the guide sleeve edge 31 on the other side is folded and fitted against the other end of the first through section or the second through section, so as to limit and install the damping guide sleeve 3 in the left sheet metal 4 or the right sheet metal 13.

[0050] Furthermore, the damping guide sleeve 3 and the guide sleeve edge 31 are of an integrally formed structure.

[0051] Further, a rotatable pawl 7 is arranged inside the headrest bracket, a first cam 11 is fixedly installed on the connecting member 5, a plurality of engaging grooves are formed on the first cam 11 corresponding to the pawl 7, and by rotating the pawl 7, the pawl 7 is engaged in the corresponding engaging groove to fix the headrest bracket.

[0052] Furthermore, a ratchet shaft 8 is arranged between the left sheet metal 4 and the right sheet metal 13, and the pawl 7 is fixedly installed on the ratchet shaft 8.

[0053] Further, a rotatable and adjustable unlocking handle 2 is installed on the side of the headrest bracket, and the unlocking handle 2 is controlled to be connected to the pawl 7.

[0054] Furthermore, a connecting shaft 9 is arranged between the left sheet metal 4 and the right sheet metal 13, a part of the connecting shaft 9 extends outside the left sheet metal 4 and the right sheet metal 13 to form an operating section, the unlocking handle 2 is fixedly installed on the operating section, a second cam 6 is arranged on the connecting shaft 9, the end of the second cam 6 is connected to the pawl 7, when the unlocking handle 2 rotates, the unlocking handle 2 drives the connecting shaft 9 to rotate, the second cam 6 drives the pawl 7 to disengage from the engaging groove, and the headrest bracket and the connecting member 5 are unlocked, so that the headrest bracket can be folded and adjusted.

[0055] Furthermore, a toothed plate spring 12 is sleeved on the connecting member 5, a cam spring 10 is arranged on the connecting shaft 9, after the headrest bracket is folded and adjusted, the toothed plate spring 12 and the cam spring 10 are rotationally reset to enable the pawl 7 to be engaged in the engaging groove at the corresponding position again.

[0056] The above has described the present invention in detail in conjunction with the embodiments of the drawings. Those of ordinary skill in the art can make various variations to the present invention according to the above description. Therefore, some details in the embodiments should not constitute a limitation to the present invention, and the protection scope of the present invention will be defined by the scope defined in the appended claims.

Claims

1. A folding headrest, characterized in that: include: Headrest bracket; A connecting piece (5) is provided on two opposite sides of the headrest bracket, and the headrest bracket and the connecting piece (5) can be relatively rotated and adjusted; as well as A damping guide sleeve (3) is arranged at the rotational connection between the connecting member (5) and the headrest bracket, the damping guide sleeve (3) and the connecting member (5) are interference fit, and the damping guide sleeve (3) is limitedly connected to the headrest bracket.

2. The folding headrest according to claim 1, characterized in that: The connecting member (5) passes through the damping guide sleeve (3), and the inner surface of the damping guide sleeve (3) is provided with a portion protruding toward the connecting member (5), so that the damping guide sleeve (3) and the connecting member (5) are interference-fitted.

3. The foldable headrest according to claim 1, characterized in that: Foldable guide sleeve ribs (31) are formed at both ends of the damping guide sleeve (3), and the guide sleeve ribs (31) are brought into contact with the headrest bracket by the folded guide sleeve ribs (31), thereby achieving an axial limiting connection between the damping guide sleeve (3) and the headrest bracket.

4. The foldable headrest according to claim 3, characterized in that: A plurality of guide sleeve ribs (31) are provided, and the plurality of guide sleeve ribs (31) are arranged at intervals along the two end edges of the damping guide sleeve (3).

5. The folding headrest according to claim 1, characterized in that: The inner surface of the damping guide sleeve (3) is coated with a Teflon coating.

6. The folding headrest according to claim 1, characterized in that: A plurality of weakened holes (32) arranged at intervals are formed on the circumference of the damping guide sleeve (3).

7. The foldable headrest according to claim 1, characterized in that: The damping guide sleeve (3) is arranged on at least one of the two sides of the headrest bracket.

8. The foldable headrest according to claim 1, characterized in that: The headrest bracket comprises a left sheet metal (4), and the left sheet metal (4) is formed with a first penetration section corresponding to the connecting piece (5); The headrest bracket also includes a right sheet metal (13) arranged opposite to the left sheet metal (4), the right sheet metal (13) having a second penetration section corresponding to the first penetration section, and the connecting member (5) is penetrated through the first penetration section and the second penetration section.

9. The foldable headrest according to claim 1, characterized in that: A rotatable ratchet (7) is arranged inside the headrest bracket; A first cam (11) is fixedly mounted on the connecting member (5), and a plurality of clamping grooves are formed on the first cam (11) corresponding to the ratchet (7). The ratchet (7) is rotated so that the ratchet (7) is clamped in the corresponding clamping groove to fix the headrest bracket.

10. The foldable headrest according to claim 9, characterized in that: A rotatably adjustable unlocking handle (2) is installed on the side of the headrest bracket, and the unlocking handle (2) controls the connection with the ratchet pawl (7).

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