Headrest with adjustable supporting hardness

Abstract

The utility model relates to the field of automobile headrests, in particular to a headrest with adjustable supporting hardness, which comprises a headrest cover, a connecting frame is fixedly connected to the lower inner wall of the headrest cover, a mounting plate is arranged at the upper end of the connecting frame, a hardness adjusting cylinder is fixedly connected to the upper end of the mounting plate, and the headrest is driven on the side face of the hardness adjusting cylinder through a transmission mechanism. The width of the installable space of the hardness adjusting cylinder is increased, so that the hardness adjusting cylinder has a larger supporting area, the clamping assembly is rotated to loosen the connection between the mounting plate and the connecting frame, the hardness adjusting cylinder and the transmission mechanism can be directly disassembled, repair and maintenance are facilitated, and after repair is completed, the mounting plate can be attached to the upper side of the connecting frame, so that the hardness adjusting cylinder has a larger supporting area. The clamping assembly is pulled through the pull-back assembly for fixation, and at the moment, the hardness adjusting cylinder can support the head again.

Description

Technical Field

[0001] The utility model relates to the field of automobile headrests, in particular to a headrest with adjustable support hardness. Background Art

[0002] The car headrest is a driving comfort and safety protection product. When a vehicle is rear-ended, the body will fall backwards due to inertia. At this time, the pressure of the vehicle's acceleration or deceleration is concentrated on the body's fragile neck and head, and the headrest acts as a buffer to protect the head.

[0003] After searching, a Chinese patent discloses a headrest and automobile with adjustable hardness (publication number CN213262081 U). This patented technology can adjust the hardness of the headrest body to meet the comfort needs of different consumers. However, in the technical solution of the above patent document, the internal cushion is prone to aging and damage after use and is not easy to replace. At the same time, the motor is set on the side, which affects the cushion area and reduces the supporting effect.

[0004] Therefore, a headrest with adjustable support hardness is proposed to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a headrest with adjustable support hardness in order to solve the above-mentioned problem, thereby improving the problem that the internal cushion is easily aged and damaged after use and is difficult to replace, and the motor is arranged on the side, which affects the cushion area and reduces the support effect.

[0006] The utility model achieves the above-mentioned purpose through the following technical solutions: a headrest with adjustable support hardness, comprising: a headrest cover, a connecting frame fixedly connected to the lower inner wall of the headrest cover, a mounting plate provided on the upper end of the connecting frame, and a hardness adjustment cylinder fixedly connected to the upper end of the mounting plate; a connecting mechanism, the connecting mechanism being arranged on the upper side of the connecting frame for quickly disassembling and fixing the mounting plate and the connecting frame; a transmission mechanism, the transmission mechanism being arranged on the upper side of the mounting plate for driving the side surface of the hardness adjustment cylinder; wherein the connecting mechanism comprises a clamping assembly arranged on the upper side of the connecting frame, and a pullback assembly is arranged on one side of the clamping assembly.

[0007] Preferably, the clamping assembly includes a clamping frame fixedly connected to the upper end of the connecting frame, the upper end of the clamping frame movably passes through the upper end of the mounting plate and extends upward, the upper end of the mounting plate is rotatably connected to a hollow rotating column, the circumferential surface of the hollow rotating column is fixedly connected to a gear, the upper end of the mounting plate is slidably connected to two parallel racks, both of which are meshed with the surface of the gear, and the two far ends of the two racks are fixedly connected to clamping blocks, and the two clamping blocks are respectively movably clamped to the inner walls of the two clamping frames, and the mounting plate and the upper hardness adjustment cylinder can be quickly disassembled through the clamping assembly, which is convenient for replacement and maintenance.

[0008] Preferably, two sliding grooves are provided on the upper end of the mounting plate, and sliders are fixedly connected to the lower ends of the two racks. The two sliders are respectively slidably matched with the inner walls of the two sliding grooves. The sliding match between the sliding grooves and the sliders can make the racks less likely to shake and stably mesh with the gears.

[0009] Preferably, both ends of the two clamping blocks are fixedly connected with blocking blocks, and the distance between the two blocking blocks is greater than the width of the inner wall of the clamping frame. The clamping position of the clamping block and the clamping frame can be positioned by the blocking blocks.

[0010] Preferably, the pullback assembly includes a mounting column fixedly connected to the upper end of the mounting plate, a torsion spring is fixedly connected to the circumferential surface of the mounting column, one end of the torsion spring is fixedly connected to the inner wall of the hollow rotating column, and the pullback assembly can be used to pull the clamping block and the clamping frame to continuously clamp together, making the fixation more stable.

[0011] Preferably, the transmission mechanism includes a mounting table fixedly connected to the upper end of the mounting plate, a synchronous belt assembly is installed on the side end of the mounting table, a reduction motor is fixedly connected to the side end of the mounting table, and the synchronous belt assembly is fixedly connected to the hardness adjustment cylinder. The hardness adjustment cylinder can be driven laterally through the synchronous belt assembly to increase the support area.

[0012] Preferably, a positioning frame is fixedly connected to the upper end of the mounting plate, and the mounting plate is slidably matched with the inner wall of the positioning frame. The positioning frame can be used to position the mounting plate when it is fixed, so as to facilitate quick installation.

[0013] The beneficial effects of the utility model are:

[0014] 1. The transmission mechanism is used to drive the side of the hardness adjustment tube to increase the installation space width of the hardness adjustment tube, so that the hardness adjustment tube has a larger support area. The clamping assembly is rotated, and the clamping assembly loosens the connection between the mounting plate and the connecting frame. The hardness adjustment tube and the transmission mechanism can be directly disassembled, which is convenient for repair and maintenance. When the repair is completed, the mounting plate can be attached to the upper side of the connecting frame, and the clamping assembly can be pulled by the pullback assembly to fix it. At this time, the hardness adjustment tube can support the head again;

[0015] 2. The positioning frame can be used to position the mounting plate when it is fixed, preventing the mounting plate from being skewed in position and direction, making installation easy and quick. At the same time, when an impact occurs, most of the backward impact force can be absorbed to block and fix the mounting plate, thereby increasing the support effect on the mounting plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a main perspective view of the utility model;

[0017] Figure 2For the utility model Figure 1 A magnified view of middle;

[0018] Figure 3 This is a cutaway stereogram of the utility model from a first viewing angle;

[0019] Figure 4 For the utility model Figure 3 Enlarged view of B.

[0020] In the figure: 1. headrest cover; 2. connecting frame; 3. hardness adjustment cylinder; 4. positioning frame; 5. mounting plate; 6. connecting mechanism; 601. snap-in assembly; 6011. snap-in frame; 6012. snap-in block; 6013. rack; 6014. gear; 6015. hollow rotating column; 6016. blocking block; 6017. slide groove; 6018. slider; 602. pullback assembly; 6021. torsion spring; 6022. mounting column; 7. transmission mechanism; 701. synchronous belt assembly; 702. mounting table; 703. reduction motor. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] When implementing: Figure 1-4As shown, a headrest with adjustable support hardness comprises: a headrest cover 1, a connecting frame 2 is fixedly connected to the lower inner wall of the headrest cover 1, a mounting plate 5 is arranged on the upper end of the connecting frame 2, and a hardness adjustment cylinder 3 is fixedly connected to the upper end of the mounting plate 5; a connecting mechanism 6 for quickly disassembling and fixing the mounting plate 5 and the connecting frame 2 is arranged on the upper side of the connecting frame 2; a transmission mechanism 7, a transmission mechanism 7 for driving the side of the hardness adjustment cylinder 3 is arranged on the upper side of the mounting plate 5; wherein the connecting mechanism 6 comprises a clamping assembly 601 arranged on the upper side of the connecting frame 2, and a pullback assembly 602 is arranged on one side of the clamping assembly 601. When the device is used, the hardness adjustment cylinder 3 can be driven to run at the side of the hardness adjustment cylinder 3 by the transmission mechanism 7 to reduce the overall width, increase the width of the installation space of the hardness adjustment cylinder 3, so that the hardness adjustment cylinder 3 has a larger support area, and the hardness adjustment cylinder 3 is composed of support materials of different hardness and softness. When the hardness adjustment cylinder 3 rotates, the materials of different hardness rotate to the positive When the headrest 2 is in the state of being worn, the headrest 2 is easily damaged and the headrest 2 is easily damaged.

[0023] like Figure 2 and Figure 4As shown, the clamping assembly 601 includes a clamping frame 6011 fixedly connected to the upper end of the connecting frame 2, the upper end of the clamping frame 6011 movably penetrates the upper end of the mounting plate 5 and extends upward, the upper end of the mounting plate 5 is rotatably connected to a hollow rotating column 6015, the circumferential surface of the hollow rotating column 6015 is fixedly connected to a gear 6014, and the upper end of the mounting plate 5 is slidably connected to two mutually parallel racks 6013, the two racks 6013 are meshed with the surface of the gear 6014, and the two racks 6013 are fixedly connected to the ends away from each other. The two clamping blocks 6012 are respectively movably clamped with the inner walls of the two clamping frames 6011. When the mounting plate 5 needs to be disassembled, the gear 6014 is rotated, so that the gear 6014 drives the two racks 6013 to approach each other. At this time, the rack 6013 drives the clamping block 6012 to be pulled out of the clamping frame 6011. At this time, the connection between the mounting plate 5 and the connecting frame 2 is disconnected, and the mounting plate 5 is directly disassembled at this time. When installing, the mounting plate 5 is placed on the upper side of the connecting frame 2, and the clamping frame 6011 is clamped with the clamping frame 6011. The block 6012 is aligned, and the gear 6014 is rotated in the opposite direction. At this time, the clamping block 6012 is clamped with the clamping frame 6011 to achieve a quick connection. Two slide grooves 6017 are provided on the upper end of the mounting plate 5. The lower ends of the two racks 6013 are fixedly connected with sliders 6018. The two sliders 6018 are respectively slidably matched with the inner walls of the two slide grooves 6017. When the gear 6014 and the rack 6013 are clamped, they are prone to skewness, resulting in meshing disengagement. At this time, the slider 6018 is driven by the sliding of the rack 6013 in the slide groove 6 017 slides inside, so that the rack 6013 will not be skewed when sliding, and can be stably meshed with the gear 6014, and the two ends of the two clamping blocks 6012 are fixedly connected with blocking blocks 6016, and the distance between the two blocking blocks 6016 is greater than the inner wall width of the clamping frame 6011. The blocking blocks 6016 can be used to position the clamping insertion depth of the clamping blocks 6012 and the clamping frame 6011 to prevent excessive extension that causes the clamping blocks 6012 and the clamping frame 6011 to extend out, thereby ensuring the stability of the connection.

[0024] like Figure 3 and Figure 4As shown, the pullback component 602 includes a mounting column 6022 fixedly connected to the upper end of the mounting plate 5, and a torsion spring 6021 is fixedly connected to the circumferential surface of the mounting column 6022, and one end of the torsion spring 6021 is fixedly connected to the inner wall of the hollow rotating column 6015. The pullback component 602 can continuously push the clamping block 6012 to prevent the gear 6014 from rotating on its own, causing the clamping component 601 to loosen. The torsion spring 6021 is a mechanical force storage structure that can continuously position and push the rotation of the gear 6014 to prevent the gear 6014 from rotating on its own. For the staff in this technical field, the torsion spring 6021 is a prior art and will not be described in detail here. The transmission mechanism 7 includes a mounting platform 702 fixedly connected to the upper end of the mounting plate 5, and a synchronous belt assembly 701 is installed on the side end of the mounting platform 702. A reduction motor 703 is fixedly connected to the side end of the mounting platform 702, and the synchronous belt assembly 701 is fixedly connected to the hardness adjustment cylinder 3. When it is necessary to drive the hardness adjustment cylinder 3 to rotate, the reduction motor 703 can be manually controlled to start, and the reduction motor 703 drives the synchronous belt assembly 701 to rotate. The synchronous belt assembly 701 is composed of two synchronous pulleys and a synchronous belt for connection. The two synchronous pulleys are respectively fixedly connected to the input shaft of the hardness adjustment cylinder 3 and the output end of the reduction motor 703, so that the rotation output of the reduction motor 703 can be transmitted to the hardness adjustment cylinder 3 for rotation. When the hardness adjustment cylinder 3 is adjusted to a suitable support hardness, the reduction motor 703 is manually turned off at this time, and the adjustment of the soft and hard support degree is completed. For the staff in this technical field, the reduction motor 703 and the synchronous belt assembly 701 are both prior arts, and no further details are given here. A positioning frame 4 is fixedly connected to the upper end of the mounting plate 5, and the mounting plate 5 slides with the inner wall of the positioning frame 4. The positioning frame 4 can be used to position the mounting plate 5 when it is fixed to prevent the mounting plate 5 from being skewed in position and direction, so as to facilitate quick installation.

[0025] When the utility model is in use, when the hardness adjustment cylinder 3 is aged and needs to be replaced and repaired, the gear 6014 is rotated at this time, so that the gear 6014 drives the two racks 6013 to approach each other, and the rack 6013 drives the clamping block 6012 to be pulled out of the clamping frame 6011. At this time, the connection between the mounting plate 5 and the connecting frame 2 is disconnected, and it is directly disassembled at this time. When the replacement is completed and it needs to be installed, the mounting plate 5 is placed on the upper side of the connecting frame 2, and the clamping frame 6011 is aligned with the clamping block 6012 through the positioning of the positioning frame 4. At the same time, the gear 6014 is rotated in the opposite direction. At this time, the clamping block 6012 and the clamping frame 601 1 is snapped together to achieve quick connection and complete the installation of the mounting plate 5. When the installation is completed, the reduction motor 703 can be manually controlled to start. The reduction motor 703 drives the synchronous belt assembly 701 to rotate. The synchronous belt assembly 701 transmits the rotational force to the hardness adjustment cylinder 3, so that the hardness adjustment cylinder 3 rotates. When the hardness adjustment cylinder 3 rotates, materials of different hardness rotate to the front to support the head, thereby realizing the function of adjusting the support hardness. When the hardness adjustment cylinder 3 is adjusted to a suitable support hardness, the reduction motor 703 is manually turned off at this time, thereby completing the adjustment of the soft and hard support degree and achieving a better effect of supporting the head.

[0026] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A headrest with adjustable support hardness, characterized in that: include: A headrest cover (1), wherein a connecting frame (2) is fixedly connected to the lower inner wall of the headrest cover (1), a mounting plate (5) is provided at the upper end of the connecting frame (2), and a hardness adjustment cylinder (3) is fixedly connected to the upper end of the mounting plate (5); A connecting mechanism (6) for quickly disassembling and fixing the mounting plate (5) and the connecting frame (2); the connecting mechanism (6) is arranged on the upper side of the connecting frame (2); A transmission mechanism (7) for driving the side surface of the hardness adjustment cylinder (3), the transmission mechanism (7) being arranged on the upper side of the mounting plate (5); The connection mechanism (6) comprises a clamping assembly (601) arranged on the upper side of the connection frame (2), and a pull-back assembly (602) is arranged on one side of the clamping assembly (601).

2. A headrest with adjustable support hardness according to claim 1, characterized in that: The clamping assembly (601) comprises a clamping frame (6011) fixedly connected to the upper end of the connecting frame (2); the upper end of the clamping frame (6011) movably penetrates the upper end of the mounting plate (5) and extends upward; the upper end of the mounting plate (5) is rotatably connected to a hollow rotating column (6015); the circumferential surface of the hollow rotating column (6015) is fixedly connected to a gear (6014); the upper end of the mounting plate (5) is slidably connected to two racks (6013) parallel to each other; the two racks (6013) are meshingly connected to the surface of the gear (6014); the two ends of the two racks (6013) that are far away from each other are fixedly connected to clamping blocks (6012); the two clamping blocks (6012) are movably clamped to the inner walls of the two clamping frames (6011) respectively.

3. A headrest with adjustable support hardness according to claim 2, characterized in that: Two slide grooves (6017) are provided at the upper end of the mounting plate (5), and sliders (6018) are fixedly connected to the lower ends of the two racks (6013), and the two sliders (6018) are respectively slidably matched with the inner walls of the two slide grooves (6017).

4. The headrest with adjustable support hardness according to claim 2, characterized in that: Both ends of the two clamping blocks (6012) are fixedly connected with blocking blocks (6016), and the distance between the two blocking blocks (6016) at the ends away from each other is greater than the width of the inner wall of the clamping frame (6011).

5. The headrest with adjustable support hardness according to claim 2, characterized in that: The pullback assembly (602) comprises a mounting column (6022) fixedly connected to the upper end of the mounting plate (5), a torsion spring (6021) being fixedly connected to the circumferential surface of the mounting column (6022), and one end of the torsion spring (6021) being fixedly connected to the inner wall of the hollow rotating column (6015).

6. The headrest with adjustable support hardness according to claim 1, characterized in that: The transmission mechanism (7) comprises a mounting platform (702) fixedly connected to the upper end of the mounting plate (5), a synchronous belt assembly (701) is installed on the side end of the mounting platform (702), a reduction motor (703) is fixedly connected to the side end of the mounting platform (702), and the synchronous belt assembly (701) is fixedly connected to the hardness adjustment cylinder (3).

7. The headrest with adjustable support hardness according to claim 1, characterized in that: The upper end of the mounting plate (5) is fixedly connected to a positioning frame (4), and the mounting plate (5) is slidably matched with the inner wall of the positioning frame (4).

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