Headrest and waist support system and electric seat with same

Abstract

The utility model discloses a headrest and waist support system and an electric seat with the same. The headrest and waist support system comprises at least one headrest mounting bracket, a waist support mounting bracket, a waist support, a first linear actuator and a second linear actuator, the waist support mounting bracket is movably connected with the headrest mounting bracket; the waist support is pivotally mounted on the waist support mounting bracket; the first linear actuator is operably connected with the headrest mounting bracket; the second linear actuator is operably connected with the lumbar support mounting bracket; when a second linear actuator moves the waist support to a complete stretching position, a complete retracting position and any position between the complete stretching position and the complete retracting position, the waist area of a user is in contact with the waist support to move to the optimal position, and the waist support has the advantages that the number of connecting pieces is reduced, and the weight of the user is reduced. And the comfort of the waist is ensured.

Description

Technical Field

[0001] This utility model belongs to the field of electric seat technology, specifically relating to a headrest and lumbar support system and an electric seat having the same. Background Technology

[0002] Electric chairs are widely used in homes and offices because people enjoy adjusting to various comfortable positions while engaging in activities such as watching TV, reading, napping, or sleeping. These electric chairs typically consist of multiple components, such as headrests, lumbar supports, leg rests, and footrests, each requiring a corresponding drive assembly to adjust them to various positions and provide the user with the desired level of comfort. Due to the diverse postures required in electric chairs, multiple independent connecting components are used to connect the lumbar support drive assembly to ensure good conformity with the user's lower back regardless of position. This means that the connecting components for the lumbar support drive assembly and the headrest drive assembly need to be separate. However, this setup results in a large number of connecting components, which can cause interference between them. To ensure that the lumbar support conforms to the user's lower back in all postures and to reduce the number of connecting components while avoiding interference, a headrest and lumbar support system and an electric chair incorporating it are proposed. Utility Model Content

[0003] This utility model aims to solve at least one of the technical problems existing in the prior art.

[0004] Therefore, this utility model proposes a headrest and lumbar support system and an electric seat having the same, which has the advantages of reducing the number of connecting parts and ensuring lumbar comfort.

[0005] A headrest and lumbar support system according to an embodiment of the present invention includes: at least one headrest mounting bracket, a lumbar support mounting bracket, a lumbar support, a first linear actuator, and a second linear actuator; the headrest mounting bracket is used to mount a headrest; the lumbar support mounting bracket is movably connected to the headrest mounting bracket; the lumbar support is pivotally mounted on the lumbar support mounting bracket; the first linear actuator is operably connected to the headrest mounting bracket, and the first linear actuator is used to move the headrest mounting bracket from a fully retracted position to a fully extended position; the second linear actuator is operably connected to the lumbar support mounting bracket, and the second linear actuator is used to move the lumbar support between a fully extended position and a fully retracted position; when the second linear actuator moves the lumbar support to a fully extended position, a fully retracted position, and any position between the fully extended position and the fully retracted position, the lumbar support moves to an optimal position due to the contact between the user's lumbar region and the lumbar support.

[0006] According to one embodiment of the present invention, the number of headrest mounting brackets is two, and the two headrest mounting brackets are arranged opposite to each other.

[0007] According to one embodiment of the present invention, a motor mounting rod is included, wherein the motor end of the first linear actuator and the motor end of the second linear actuator are both mounted on the motor mounting rod.

[0008] According to one embodiment of the present invention, the waist support is composed of three plates connected in sequence.

[0009] According to one embodiment of the present invention, the three plates of the waist support are integrally connected.

[0010] According to one embodiment of the present invention, a certain included angle is formed between two adjacent plates.

[0011] According to one embodiment of the present invention, both the motor end of the first linear actuator and the motor end of the second linear actuator are provided with lugs, which are used to connect the corresponding first linear actuator or second linear actuator to the motor mounting rod.

[0012] According to one embodiment of the present invention, a groove is formed on the outer surface of the motor mounting rod along the circumferential direction. There are multiple grooves, and the multiple grooves are spaced apart along the central axis of the motor mounting rod. An elastic retaining ring is provided in the groove, and the elastic retaining ring is used to restrict the axial movement of the lug along the motor mounting rod.

[0013] An electric seat with a headrest and lumbar support system, wherein any one of the headrest and lumbar support systems described above is used.

[0014] The beneficial effects of this utility model are that the lumbar support and the lumbar support mounting bracket are pivotally connected, so that after the second linear actuator drives the lumbar support mounting bracket to adjust the position of the lumbar support, the user's lumbar area moves to the optimal position as it contacts the lumbar support, ensuring the user's lumbar comfort. At the same time, it avoids the need for the second linear actuator to use an independent connection component. That is, the second linear actuator and the first linear actuator can share some connection components, thereby saving the number of connection components and avoiding interference between them.

[0015] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention.

[0016] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0017] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the following description of the embodiments with accompanying drawings, in which:

[0018] Figure 1 This is a front right view of the overall structure of this utility model in its retracted state;

[0019] Figure 2 This is a front left schematic diagram of the overall structure of this utility model in its retracted state;

[0020] Figure 3 This is a partial inner schematic diagram of the connection between the lumbar support and the lumbar support mounting bracket of this utility model;

[0021] Figure 4 This is a partial schematic diagram of the outer side of the waist support and waist support mounting bracket connected in this utility model.

[0022] Figure 5 This is a right-side view of the overall structure of this utility model in its retracted state;

[0023] Figure 6 This is a front left schematic diagram of the overall structure of this utility model in its extended state;

[0024] Figure 7 This is a right-side view of the overall structure of this utility model in its extended state;

[0025] Figure 8 This is a schematic diagram showing the disassembly of the motor mounting rod and the elastic retaining ring of this utility model;

[0026] Figure 9 This is a schematic diagram showing the connection state between the motor mounting rod of this utility model and the first linear actuator and the second linear actuator;

[0027] Figure 10 This is a schematic diagram of the initial state of the waist support when the second linear actuator of this utility model is fully extended;

[0028] Figure 11 This is a schematic diagram showing the state of the waist support in contact with the user's waist when the second linear actuator of this utility model is fully extended;

[0029] Figure 12 This is a schematic diagram of the initial state of the waist support when the second linear actuator of this utility model is fully retracted;

[0030] Figure 13 This is a schematic diagram showing the state of the waist support after it contacts the user's waist when the second linear actuator of this utility model is fully retracted.

[0031] Figure label:

[0032] 102. Headrest assembly; 104. Lumbar support assembly; 106. Headrest mounting bracket; 108. Crossbar; 110. Motor mounting rod; 112. First linear actuator; 118. First mounting piece; 120. Coil spring; 122. First connector; 124. Second connector; 126. Third connector; 128. First connection point; 130. Second connection point; 132. Hole; 134. Lumbar support mounting bracket; 136. Third connection point; 138. Crossbeam; 140. Lumbar support; 142. L-shaped connecting plate; 144. Fastener; 150. Nut and bolt assembly; 152. Screw; 154. Arc groove; 156. Second linear actuator; 162. Second mounting piece; 164. Groove; 166. Elastic retaining ring; 168. Lug. Detailed Implementation

[0033] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0034] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0035] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0036] The following describes in detail, with reference to the accompanying drawings, an embodiment of the present invention, a headrest and lumbar support system, and an electric seat having thereon.

[0037] like Figures 1-2 As shown, the headrest and lumbar support system 100 according to an embodiment of the present invention includes a headrest assembly 102 and a lumbar support assembly 104. The headrest assembly 102 includes a pair of opposing headrest mounting brackets 106, a crossbar 108, a motor mounting rod 110, a first linear actuator 112, and a coil spring 120; the headrest portion of an electric seat is adapted to be mounted thereon; the opposite ends of the crossbar 108 are fixedly connected to the pair of opposing headrest mounting brackets 106; the motor end of the first linear actuator 112 is mounted on the motor mounting rod 110 in a manner discussed below, and its output end is mounted on the crossbar 108 via a suitable U-shaped clamp-type first mounting member 118. The upper end of the coil spring 120 is connected to the crossbar 108 via a suitable mounting bracket or a first connector 122, while the lower end of the coil spring 120 is connected to the motor mounting rod 110 via a suitable mounting bracket or a second connector 124.

[0038] Furthermore, the lumbar support assembly 104 includes a pair of opposing third connectors 126, wherein the upper portions of the pair of opposing third connectors 126, such as at the first connection point 128, are pivotally connected to the lower portions of the pair of opposing headrest mounting brackets 106. Figure 6 As can be most clearly seen and understood, the opposite ends of the motor mounting rod 110 are fixedly connected to the pair of oppositely arranged third connectors 126 at the second connection point 130. It can be seen that each of the pair of oppositely arranged third connectors 126 is provided with a pair of holes 132 for fixing the pair of oppositely arranged third connectors 126 to the internal components of the electric seat. Furthermore, the lower end of each of the pair of oppositely arranged third connectors 126, such as at the third connection point 136, is pivotally connected to the upper end of a pair of oppositely arranged lumbar support mounting brackets 134, and in the middle of the pair of oppositely arranged lumbar support mounting brackets 134, the opposite ends of a crossbeam 138 are fixedly mounted therein or connected to it. From... Figure 3-4The most easily understood aspect is that each opposite end of the lumbar support 140 has an L-shaped connecting plate 142, which is fixedly mounted thereon by suitable fasteners 144 passing through the short side of each L-shaped connecting plate 142. Furthermore, the long side of each L-shaped connecting plate 142 is pivotally connected to the lower portion of each of the pair of oppositely arranged lumbar support mounting brackets 134 by a nut and bolt assembly 150, while a screw 152 is fixedly inserted into the distal portion of the long side of each L-shaped connecting plate 142 so as to be movably positioned within an arcuate groove 154 provided in the lower portion of each of the pair of oppositely arranged lumbar support mounting brackets 134.

[0039] Furthermore, the motor end of the second linear actuator 156 is connected to the motor mounting rod 110 in the same manner as the first linear actuator 112, and is mounted on the motor mounting rod 110. Its output end is mounted on the crossbeam 138 via a suitable U-shaped clamp-type second mounting piece 162. Thus, the first linear actuator 112 and the second linear actuator 156 face opposite directions; however, the motor ends of both the first linear actuator 112 and the second linear actuator 156 are mounted on the motor mounting rod 110. For details regarding the mounting of the motor ends of the first linear actuator 112 and the second linear actuator 156 on the motor mounting rod 110, please refer to... Figure 8-9 It is understood that the motor mounting rod 110 is provided with multiple annular or circumferential grooves 164 at predetermined lateral intervals, and multiple elastic retaining rings 166 are adapted to be snapped into the grooves 164 of the motor mounting rod 110. Therefore, when the motor ends of the first linear actuator 112 and the second linear actuator 156 are to be fixedly mounted on the motor mounting rod 110, the motor mounting rod 110 is passed through a pair of lugs 168 provided on the motor ends of the first linear actuator 112 and the second linear actuator 156, respectively. Then, the elastic retaining rings 166 are snapped into the annular grooves 164 on the motor mounting rod 110, so as to effectively fix the first linear actuator 112 and the second linear actuator 156 laterally along the motor mounting rod 110 at predetermined axial positions.

[0040] In operation, when the first linear actuator 112, acting as a unidirectional linear actuator, is activated, its output end extends, effectively pushing the crossbar 108 upward. As the pair of opposing headrest mounting brackets 106 rotate about the first connection point 128, this forces the pair of headrest mounting brackets 106 to move forward. Therefore, although not shown in the figure, the headrests mounted on the pair of headrest mounting brackets 106 move forward to properly support the user's head. Figure 6-7As shown. It should also be noted that the coil spring 120 will be in a stretched state at this time, so that when the first linear actuator 112 is de-energized, the coil spring 120 will cause the headrest mounting brackets 106 and the headrests mounted on them to return to their original positions. Figure 2-3 The upright position shown.

[0041] Similarly, when the second linear actuator 156, acting as a bidirectional linear actuator, is activated, its output end extends, effectively pushing the crossbeam 138 downwards. As the opposing pair of lumbar support mounting brackets 134 rotate about the pivot connection point 136, this forces the lumbar support mounting brackets 134 to move forward. In this way, the lumbar support 140 will rise to support the user's lumbar region, such as... Figure 6-7 As shown. Conversely, when the output of the second linear actuator 156 retracts, the crossbeam 138 will retract, causing the pair of oppositely positioned lumbar support mounting brackets 134 to also retract, thus the lumbar support 140 will return to its original position. Figure 2-5 The position shown. Depending on the activation level of the second linear actuator 156, the lumbar support 140 can be in any of several intermediate positions between fully extended and fully retracted. In this way, the lumbar support 140 can support the lumbar region according to the user's specific individual needs. Further reference Figure 10-13 In light of the unique structural features of this invention, it can be understood that the waist support 140 is actually composed of three plates 140U, 140M, and 140L connected as a whole. Figure 2 , 4 The most clearly visible components are the lumbar supports, which are angled relative to each other. This maximizes the contact area between the lumbar support 140 and the user's lower back, effectively providing maximum comfort.

[0042] More specifically, from Figure 10-11 As can be seen, when the second linear actuator 156 moves to its fully extended position, the lumbar support 140 initially will be in the position of... Figure 10 The position shown. At this position, it can be seen that only the lower plate 140L of the lumbar support 140 is in contact with the user's lumbar region. Therefore, as... Figure 10As schematically shown, since the pressure P applied to the user's lumbar region is not directly directed toward the pivot axis defined by the nut-bolt assembly 150, the pressure P actually acts relative to the pivot axis defined by the nut-bolt assembly 150 via a lever arm, causing the lumbar support 140, more specifically the L-shaped connecting plate 142, to pivot about the nut-bolt assembly 150. Accordingly, the screw 152 moves within the arcuate groove 154, thereby causing the lumbar support 140 to pivot clockwise relative to the pair of opposing lumbar support mounting brackets 134 (as shown). Figure 10 (From a mid-angle perspective), this allows the lumbar support to reach 140 degrees. Figure 11 As shown, screw 152 is located at the upper end of the arc-shaped groove 154. In this position, it can be understood that the entire lumbar support 140, i.e., all three plates 140U, 140M, and 140L, will be in contact with the user's lumbar region, thus providing maximum support and comfort. Furthermore, it can be understood that since the pressure P acts radially directly towards the nut-bolt assembly 150, there is no lever arm, and therefore the entire lumbar support 140 is in a stable state, and will not move further. Thus, the user's lumbar region is now completely supported by the entire lumbar support 140, providing maximum comfort.

[0043] On the contrary, from Figure 12-13 As can be seen, when the second linear actuator 156 moves to its fully retracted position, the lumbar support 140 initially will be in Figure 12 The position shown. At this position, it can be seen that only the upper plate 140U of the lumbar support 140 is in contact with the user's lumbar region. Therefore, as... Figure 12 As schematically shown, since the pressure P applied to the user's lumbar region is not directly oriented towards the pivot axis defined by the nut-bolt assembly 150, the pressure P actually acts relative to the pivot axis defined by the nut-bolt assembly 150 via a lever arm, causing the lumbar support 140, more specifically the L-shaped connecting plate 142, to pivot about the nut-bolt assembly 150. Accordingly, the screw 152 moves within the arcuate groove 154, thereby causing the lumbar support 140 to pivot counterclockwise relative to the pair of opposing lumbar support mounting brackets 134 (as shown). Figure 12 (From a mid-angle perspective), this allows the lumbar support to reach 140 degrees. Figure 13As shown, screw 152 is located at the lower end of the arcuate groove 154. In this position, it can be understood that the entire lumbar support 140, i.e., all three plates 140U, 140M, and 140L, will be in contact with the user's lumbar region, thus providing maximum support and comfort. Furthermore, it can be understood that since the pressure P acts along a trajectory directly toward the nut-bolt assembly 150, there is no lever arm, and therefore the entire lumbar support 140 is in a stable state, and will not move further. Thus, the user's lumbar region is now completely supported by the entire lumbar support 140, providing maximum comfort. Finally, it should be noted that any predetermined extension or retraction of the second linear actuator 156 will always be achieved regardless of the positions of the opposing pair of lumbar support mounting brackets 134 and the lumbar support 140. In other words, the lumbar support 140 can always move and reach a position that provides maximum comfort to the user's lumbar region.

[0044] An electric seat with a headrest and lumbar support system, using the aforementioned headrest and lumbar support system 100.

[0045] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0046] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A headrest and lumbar support system, characterized in that, include: At least one headrest mounting bracket (106) for mounting a headrest; A lumbar support mounting bracket (134) is movably connected to a headrest mounting bracket (106); A lumbar support (140) is pivotally mounted on a lumbar support mounting bracket (134); A first linear actuator (112) is operatively connected to a headrest mounting bracket (106) for moving the headrest mounting bracket (106) from a fully retracted position to a fully extended position. A second linear actuator (156) is operatively connected to the lumbar support mounting bracket (134) for moving the lumbar support (140) between a fully extended position and a fully retracted position. The lumbar support (140) moves to the optimal position due to the contact between the user's lumbar region and the lumbar support (140) when the second linear actuator (156) moves it to the fully extended position, the fully retracted position, and any position between the fully extended and fully retracted positions.

2. The headrest and lumbar support system according to claim 1, characterized in that, The number of the headrest mounting brackets (106) is two, and the two headrest mounting brackets (106) are arranged opposite to each other.

3. The headrest and lumbar support system according to claim 2, characterized in that, The device includes a motor mounting rod (110), on which the motor end of the first linear actuator (112) and the motor end of the second linear actuator (156) are both mounted.

4. The headrest and lumbar support system according to claim 1, characterized in that, The lumbar support (140) is composed of three plates connected in sequence.

5. The headrest and lumbar support system according to claim 4, characterized in that, The three plates of the waist support (140) are connected as a whole.

6. The headrest and lumbar support system according to claim 5, characterized in that, The two adjacent plates form a certain angle.

7. The headrest and lumbar support system according to claim 3, characterized in that, The motor end of the first linear actuator (112) and the motor end of the second linear actuator (156) are both provided with lugs (168), which are used to connect the corresponding first linear actuator (112) or second linear actuator (156) to the motor mounting rod (110).

8. The headrest and lumbar support system according to claim 7, characterized in that, The outer surface of the motor mounting rod (110) has a groove (164) formed along the circumferential direction. There are multiple grooves (164), which are spaced apart along the central axis of the motor mounting rod (110). An elastic retaining ring (166) is provided in the groove (164), which is used to restrict the lug (168) from moving axially along the motor mounting rod (110).

9. An electric seat with a headrest and lumbar support system, characterized in that, The headrest and lumbar support system described in any one of claims 1-8 are adopted.

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