Track structure capable of achieving flat-angle back chamfering
By using a cross-fitting upper and lower rack and meshing gear structure, combined with an articulated slide and transition connecting block, the problem of gear interference when the massage chair track is tilted at a large angle is solved, achieving stable and smooth movement of the massage mechanism.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-11
- Publication Date
- 2026-04-14
AI Technical Summary
Existing massage chairs with variable angle tracks have difficulty achieving large-angle backrests, and gears and racks are prone to interference at any angle.
Design a track structure that can achieve flat-angle reverse backing. Through the cross-fitting of the upper and lower racks, the meshing connection of the connecting gear and the connecting rack, combined with the setting of the articulated slide and transition connecting block, ensure tooth alignment and stable movement.
It achieves a smooth transition of the massage mechanism, avoids interference between gears and racks, and enhances the stability of the track and the ability to tilt the back at large angles.
Smart Images
Figure CN121845895A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of massage devices, and more specifically to the connection structure of tracks. Background Technology
[0002] Most massage chairs on the market today can change the massage area by moving the massage mechanism. However, the variable angle tracks on current massage chairs struggle to achieve precise gear engagement at every angle, often resulting in gear and rack interference in certain areas. Furthermore, the variable angle of current guide rails is limited to a small range, making it impossible to achieve large-angle reclining. Summary of the Invention
[0003] In order to solve the above-mentioned technical problems, the purpose of this invention is to provide a track structure that can realize flat-angle reverse back.
[0004] This invention is achieved through the following technical solution:
[0005] A track structure capable of achieving a flat-angled inverted back includes an upper track and a lower track. The upper track includes an upper rack, and the lower track includes a lower rack. The upper rack and the lower rack are offset and interlocked.
[0006] The upper rack is connected to an upper connecting member at its vertical side end along the rack direction, and a connecting gear is provided on the upper connecting member. The lower rack is connected to a lower connecting member at its vertical side end along the rack direction, and a connecting rack is provided on the lower connecting member. The connecting gear and the connecting rack are meshed with each other.
[0007] The upper track and the lower track are connected by the connecting gear and the connecting rack.
[0008] Rotating the upper track causes the upper rack to rotate around the center of the connecting gear. With the tooth profile limiting engagement between the connecting gear and the connecting rack, the teeth of the upper rack and the teeth of the lower rack are aligned in a specific manner.
[0009] In this embodiment of the invention, a hinged slide groove is provided on the upper track, and the hinged slide groove includes a first hinged slide groove provided on the upper rack and / or the upper connector.
[0010] Rotating the upper track allows the hinge point between the upper and lower tracks to move along the hinge groove.
[0011] In a preferred embodiment, the upper rack includes an upper toothed segment, and the lower rack includes a lower toothed segment, wherein the upper toothed segment and the lower toothed segment are offset and interlocked.
[0012] In this embodiment of the invention, the lower connector is provided with a recessed groove, and the connecting rack is disposed in the recessed groove.
[0013] The sink is also provided with a second hinged slide groove, which is provided along the vertical end of the connecting rack.
[0014] In this embodiment of the invention, a transition connecting block is also provided between the upper track and the lower track. The transition connecting block includes an upper transition block and a lower transition block. One end of the upper transition block is hinged to the lower transition block, and one end of the lower transition block is provided with a third hinge groove for hinged to the upper transition block.
[0015] The upper transition block can move along the upper connector, the lower transition block can move along the lower connector, and the hinge point between the upper and lower transition blocks can also move along the third hinge groove.
[0016] In an embodiment of the present invention, the upper transition block includes a main body, one end of which is provided with a first extension member, and the first extension member is provided with a first hinge hole.
[0017] The main body is also provided with a protruding ridge, and the upper connector is provided with a sliding groove that cooperates with the main body. The sliding groove is also provided with a notch that cooperates with and connects to the protruding ridge.
[0018] In this embodiment of the invention, the lower transition block includes a body, and the side wall end of the body is provided with a second hinge hole that is hinged to the upper connector.
[0019] The third hinge groove is provided on the body.
[0020] The main body is also provided with a insert at one end near the lower track, and the lower track is provided with a slot that mates with the insert.
[0021] In an embodiment of the invention, the insert includes a transverse insert and / or a longitudinal insert, the slot includes a transverse slot and / or a longitudinal slot, and the lower transition block is movable along the slot direction.
[0022] In this embodiment of the invention, the body includes a second extension member provided with spaced intervals. The third hinge groove is provided through the second extension member located on the inner side. The inner end of the second extension member located on the outer side is also provided with the third hinge groove. The outer end of the second extension member located on the outer side is provided with a large hole communicating with the third hinge groove thereon. Similarly, the body of the non-second extension member located on the outer side is also provided with a corresponding large hole.
[0023] In this embodiment of the invention, a rotating shaft is also included, the connecting gear is disposed on one side of the rotating shaft, and the other side of the rotating shaft passes through the lower transition block and connects the upper track to the lower transition block.
[0024] In this embodiment of the invention, a screw hole and a fastener are also included, through which the upper rail, lower rail and lower transition block are hinged together by the fastener passing through the screw hole.
[0025] The present invention provides a track structure capable of achieving a flat-angled inverted back, which has the following beneficial effects:
[0026] 1. Through the rack and pinion joint structure of the upper and lower racks and the meshing and rotating structure of the connecting gear and the connecting rack, under the condition of the tooth profile limiting fit of the connecting gear and the connecting rack, the teeth of the upper rack and the teeth of the lower rack are aligned in a specific way, so that when the massage walking mechanism passes through the connection point, it can smoothly transition without interference between the walking gear and the rack.
[0027] 2. Multiple articulated slides are provided, including a first articulated slide, a second articulated slide, and a third articulated slide. By setting multiple articulated slides, the hinge force between the upper and lower rails is distributed, providing more support surfaces and greatly enhancing the stability of the movement between the upper and lower rails.
[0028] 3. The use of transition blocks increases the distance that the upper and lower tracks can rotate and move, thus providing space for a wide range of inversion angles. Furthermore, the main body, protruding ridge structure, and insert structure respectively located on the upper and lower transition blocks improve the smoothness of movement between the upper and upper tracks, and between the lower and lower transition blocks and the lower track.
[0029] 4. The spaced-out second extension and the structural components that mate with it also enhance the stability of the connection between the upper and lower transition blocks.
[0030] 5. The upper rack includes an upper toothed section, and the lower rack includes a lower toothed section. The upper and lower toothed sections are staggered and interlocked to achieve better space saving and stable support for the walking gears of the massage mechanism. Attached Figure Description
[0031] To more clearly illustrate the technical solution of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0032] Figure 1This is an exploded view of the present invention.
[0033] Figure 2 This is an exploded view of the present invention.
[0034] Figure 3 This is a schematic diagram of the present invention. Figure 1 .
[0035] Figure 4 This is a schematic diagram of the present invention. Figure 2 .
[0036] Figure 5 This is a perspective view of the present invention tilted and upside down.
[0037] Figure 6 This is a schematic diagram of the tilted and inverted back of the present invention. Figure 1 .
[0038] Figure 7 This is a schematic diagram of the tilted and inverted back of the present invention. Figure 2 .
[0039] Figure 8 This is a schematic diagram of the tilted and inverted back of the present invention. Figure 3 .
[0040] Figure 9 This is a schematic diagram of the tilted and inverted back of the present invention. Figure 4 .
[0041] Figure 10 This is a top view of the present invention.
[0042] Figure 11 yes Figure 10 Sectional view at point AA.
[0043] Figure 12 This is a three-dimensional view of the flat-angled inverted back of the present invention.
[0044] Figure 13 This is a schematic diagram of the tilted, backward-facing walking method of the present invention.
[0045] Figure 14 This is a cross-sectional view of the tilted, backward-facing walking mechanism of the present invention.
[0046] Figure 15 This is a schematic diagram of the walking mechanism of the flat-angled inverted back of the present invention.
[0047] Figure 16 This is a cross-sectional view of the flat-angled inverted back of the present invention.
[0048] Figure 17 This is a schematic diagram of another embodiment of the upper and lower racks of the present invention. Figure 1 .
[0049] Figure 18 This is a schematic diagram of another embodiment of the upper and lower racks of the present invention. Figure 2 .
[0050] In the diagram: 1-Upper track; 11-Upper rack; 111-Upper half-tooth segment; 12-Upper connector; 13-Connecting gear; 14-Slide groove; 15-Notch; 16-Plate structure; 2-Lower track; 21-Lower rack; 211-Lower half-tooth segment; 22-Lower connector; 23-Connecting rack; 24-Counterset groove; 25-Horizontal slot; 26-Vertical slot; 31-First hinged slide groove; 32-Second hinged slide groove; 33 - Third hinge groove; 4- Transition connecting block; 5- Upper transition block; 51- Main body; 52- First extension; 53- First hinge hole; 54- Protruding ridge; 6- Lower transition block; 61- Main body; 62- Second hinge hole; 63- Second extension; 64- Lateral insert; 65- Longitudinal insert; 66- Large hole; 7- Rotating shaft; 8- Screw hole; 9- Travel guide rail; 100- Travel gear; 200- Travel guide wheel. Detailed Implementation
[0051] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0052] Referring to the accompanying drawings, a track structure capable of achieving a flat-angled backrest includes an upper track 1 and a lower track 2. Specifically, the upper track 1 includes an upper rack 11, and the lower track 2 includes a lower rack 21. The upper rack 11 and the lower rack 21 are offset and interlocked. The purpose of this interlocking design of the upper rack 11 and the lower rack 21 is that when the walking gear of the massage mechanism moves to the transition section between the upper rack 11 and the lower rack 21, it can be supported and driven by the upper rack 11 and the lower rack 21.
[0053] More specifically, the upper rack 11 is vertically connected to an upper connector 12 along its rack direction, and a connecting gear 13 is mounted on the upper connector 12. The lower rack 21 is vertically connected to a lower connector 22 along its rack direction, and a connecting rack 23 is mounted on the lower connector 22. The connecting gear 13 engages with the connecting rack 23. Of course, the connecting gear 13 can also be a part or several arc teeth of a gear, as long as it can engage with the connecting rack 23 and drive the connecting rack 23 to perform its limiting movement.
[0054] In addition, the upper track 1 and the lower track 2 are connected by a connecting gear 13 and a connecting rack 23, specifically by a toothed meshing connection.
[0055] The tooth design of the connecting gear 13 and the connecting rack 23 should be consistent with or be an integer multiple of the specifications of the upper rack 11 and the lower rack 21, and the design position of the connecting rack 23 should preferably be aligned with the lower rack 21.
[0056] In a preferred embodiment of this application, the tooth specifications of the connecting gear 13 and the connecting rack 23 are consistent with the specifications of the upper rack 11 and the lower rack 21, and the design position of the connecting rack 23 is aligned with the lower half tooth segment 211.
[0057] By rotating the upper track 1, the upper rack 11 will rotate around the center of the connecting gear 13. Due to the tooth profile limiting cooperation between the connecting gear 13 and the connecting rack 23 with the same tooth specifications, the teeth of the upper rack 11 and the lower rack 21 are aligned in a specific way, thereby ensuring that the traveling wheels of the traveling mechanism can smoothly pass through the connecting section between the upper track 1 and the lower track 2. The connecting gear 13 and the connecting rack 23 play a guiding role.
[0058] In a preferred embodiment, the shapes of the upper rack 11 and the lower rack 21 can be designed as shown in the appendix to the specification. Figure 17 , 18 As shown, the width of the traveling gear 100 is greater than the width of the upper rack 11 and the lower rack 21. When the traveling gear 100 moves, when it is at the upper rack 11, the upper rack 11 supports a part of the traveling gear 100; when it is at the lower rack 21, the lower rack 21 supports another part of the traveling gear 100; when the traveling gear 100 is at the transition section connecting the upper rack 11 and the lower rack 21, the upper rack 11 and the lower rack 21 simultaneously support the traveling gear 100.
[0059] In another embodiment, the upper rack 11 includes an upper toothed segment 111, and the lower rack 21 includes a lower toothed segment 211. The upper toothed segment 111 and the lower toothed segment 211 are staggered and interlocked to achieve better space saving and stable support for the massage mechanism's traveling gear 100.
[0060] Furthermore, the upper track 1 is provided with a hinged slide groove. By rotating the upper track 1, the hinge point between the upper track 1 and the lower track 2 can move along the hinged slide groove. The hinged slide groove that enables the rotatable movement between the upper track 1 and the lower track 2 includes a first hinged slide groove 31 provided on the upper tooth segment 111 and the upper connecting member 12. The first hinged slide groove 31 is shaped like a racetrack, with the long end of the racetrack shape slightly inclined and the arc opening facing upward. Its purpose is to provide a clearance space when the upper track 1 and the lower track 2 rotate relative to each other, so that under the guidance of the connecting gear 13 and the connecting rack 23, the hinge point between the upper track 1 and the lower track 2 can move along the first hinged slide groove 31, thereby ensuring that the teeth of the upper tooth segment 111 and the lower tooth segment 211 correspond one-to-one. In other embodiments, the first hinge groove 31 can also be positioned on the upper connector 12 or on the upper tooth segment 111, but the dual-point hinge method of this application is more stable and smoother.
[0061] Furthermore, a recess 24 is provided on the lower connector 22, and the connecting rack 23 is disposed in the recess 24. The design of the recess 24 not only makes the structure of the lower connector 22 more compact, but also provides a limiting guide space for the connecting gear 13, so as to better ensure the cooperation between the connecting gear 13 and the connecting rack 23.
[0062] More specifically, a second hinged slide 32 is also provided in the sink 24. The second hinged slide 32 is provided along the vertical end of the connecting rack 23 and is in the shape of a racetrack.
[0063] Furthermore, an intermediate connecting block 4 is also connected between the upper track 1 and the lower track 2. The intermediate connecting block 4 includes an upper intermediate block 5 and a lower intermediate block 6. One end of the upper intermediate block 5 is hinged to the lower intermediate block 6, and one end of the lower intermediate block 6 is provided with a third hinge groove 33 for hinged to the upper intermediate block 5.
[0064] More specifically, during the rotation of the upper track 1 relative to the lower track 2, the upper transition block 5 can move along the upper connecting member 12, the lower transition block 6 can move along the lower connecting member 22, and the hinge point between the upper transition block 5 and the lower transition block 6 can also move along the third hinge groove 33.
[0065] More specifically, the upper transition block 5 includes a main body 51, one end of which is provided with a first extension member 52. The first extension member 52 is narrower than the main body 51 and is connected to the middle of the main body 51. The first extension member 52 is also provided with a first hinge hole 53.
[0066] Furthermore, the main body 51 is also provided with a protruding ridge 54, and the upper connector 12 is provided with a sliding groove 14 that cooperates with the main body 51. The sliding groove 14 is also provided with a notch 15 that cooperates with and connects to the protruding ridge 54.
[0067] Furthermore, the lower transition block 6 includes a body 61, the side wall end of which is provided with a second hinge hole 62 that is hinged to the upper connector 12.
[0068] Furthermore, a third hinge groove 33 is disposed on the body 61. More specifically, the third hinge groove 33 is hook-shaped. This hook-shaped groove provides vertical clearance when the upper transition block 5 and the lower transition block 6 move together. In addition, the body 61 also includes second extension members 63 disposed at intervals. The third hinge groove 33 is disposed through the second extension member 63 located on the inner side. The inner end of the second extension member 63 located on the outer side is also provided with a third hinge groove 33. The outer end of the second extension member 63 located on the outer side is provided with a large hole 66 communicating with the third hinge groove 33 thereon. Similarly, the body 61 located on the outer side, which is not a second extension member, is also provided with a corresponding large hole 66.
[0069] More specifically, during the engagement of the upper transition block 5 and the lower transition block 6, the first extension 52 is inserted into the spaced-apart second extension 63. Furthermore, the upper connecting block 12 has a protruding sheet-like structure 16, which is inserted between the body 61 and the second extension 63. Through the spaced-apart second extension 63 and the body 61, along with the sheet-like structure 16 and the first extension 52, the linkage design between these components greatly enhances the consistency and stability of the engagement between the lower transition block 6 and the upper transition block 5, the upper transition block 5 and the upper track 1, and the upper track 1 and the lower transition block 6.
[0070] Furthermore, an insert is provided at one end of the body 61 near the lower track 2, and a slot is provided on the lower track 2 to cooperate with the insert. More specifically, the insert includes a horizontal insert 64 and / or a vertical insert 65, and the slot includes a horizontal slot 25 and / or a vertical slot 26. The lower transition block 6 can move along the direction of the slot. The design of the above structure, through the guiding effect of the slot and the insert, further improves the smoothness and stability of the mutual movement between the lower transition block 6 and the lower track 2.
[0071] In the specific embodiments provided in this application, a longitudinal slot 26, a transverse slot 25, a longitudinal insert 65, and a transverse insert 64 are provided simultaneously.
[0072] Furthermore, it also includes a rotating shaft 7, with a connecting gear 13 disposed on one side of the rotating shaft 7, and the other side of the rotating shaft 7 passing through the lower transition block 6, connecting the upper track 1 and the lower transition block 6 to each other.
[0073] Furthermore, it also includes a screw hole 8 and a fastener, through which the upper rail 1, lower rail 2, and lower transition block 6 are hinged together.
[0074] During use, please refer to the instruction manual attached. Figure 13 To the instruction manual Figure 16 As shown, the massage mechanism includes a traveling gear 100 and a traveling guide wheel 200. Both the upper track 1 and the lower track 2 of this application are provided with traveling guide rails 9 that cooperate and connect with the traveling guide wheel 200. In a preferred embodiment, the traveling guide rails 9 are located on the inner ends of the upper rack 11 and the lower rack 21. When the massage backrest rotates, the upper track 1 can rotate around the lower track 2. Due to the staggered cross-hinged connection between the upper half-tooth segment 111 and the lower half-tooth segment 211, and the tooth limiting effect of the connecting gear 13 and the connecting rack 23, the teeth of the upper half-tooth segment 111 and the lower half-tooth segment 211 remain in completely corresponding positions when the upper track 1 rotates around the lower track 2. This allows the traveling gear 100 to smoothly travel on the upper half-tooth segment 111 and the lower half-tooth segment 211. In addition, due to the clearance space design of the articulated slide and the matching connection and structural design between the upper transition block 5 and the lower transition block, the upper track 1 can be in a flat-angled, reversed state with the lower track 2.
[0075] The foregoing description illustrates and describes preferred embodiments of the present invention. As previously stated, it should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the inventive concept described herein through the foregoing teachings or techniques or knowledge in related fields. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.
Claims
1. A track structure capable of achieving a flat-angled inverted back, comprising an upper track and a lower track, characterized in that: The upper track includes an upper rack, and the lower track includes a lower rack. The upper rack and the lower rack are offset and interlocked. The upper rack is connected to an upper connecting member at its vertical side end along the rack direction, and a connecting gear is provided on the upper connecting member. The lower rack is connected to a lower connecting member at its vertical side end along the rack direction, and a connecting rack is provided on the lower connecting member. The connecting gear and the connecting rack are meshed with each other. The upper track and the lower track are connected by the connecting gear and the connecting rack; Rotating the upper track causes the upper rack to rotate around the center of the connecting gear. With the tooth profile limiting engagement between the connecting gear and the connecting rack, the teeth of the upper rack remain aligned with the teeth of the lower rack.
2. The track structure capable of achieving a flat-angled inverted back as described in claim 1, characterized in that: The upper track is provided with a hinged slide groove, the hinged slide groove including a first hinged slide groove provided on the upper rack and / or the upper connector.
3. The track structure capable of achieving a flat-angled inverted back as described in claim 1, characterized in that: The lower connector is provided with a recess, and the connecting rack is disposed in the recess; The sink is also provided with a second hinged slide groove, which is provided along the vertical end of the connecting rack.
4. A track structure capable of achieving a flat-angled inverted back as described in any one of claims 1-3, characterized in that: A transition connecting block is also provided between the upper rail and the lower rail. The transition connecting block includes an upper transition block and a lower transition block. One end of the upper transition block is hinged to the lower transition block, and one end of the lower transition block is provided with a third hinge groove for hinged to the upper transition block. The upper transition block can move along the upper connector, the lower transition block can move along the lower connector, and the hinge point between the upper and lower transition blocks can also move along the third hinge groove.
5. A track structure capable of achieving a flat-angled inverted back as described in claim 4, characterized in that: The upper transition block includes a main body, one end of which is provided with a first extension member, and the first extension member is provided with a first hinge hole; The main body is also provided with a protruding ridge, and the upper connector is provided with a sliding groove that cooperates with the main body. The sliding groove is also provided with a notch that cooperates with and connects to the protruding ridge.
6. A track structure capable of achieving a flat-angled inverted back as described in claim 4, characterized in that: The lower transition block includes a body, and the side wall end of the body is provided with a second hinge hole that is hinged to the upper connecting member. The third hinged slide groove is provided on the body; The main body is also provided with a insert at one end near the lower track, and the lower track is provided with a slot that mates with the insert.
7. A track structure capable of achieving a flat-angled inverted back as described in claim 6, characterized in that: The insert includes a transverse insert and / or a longitudinal insert, the slot includes a transverse slot and / or a longitudinal slot, and the lower transition block is movable along the slot direction.
8. A track structure capable of achieving a flat-angled inverted back as described in claim 6, characterized in that: The body includes second extension members that are spaced apart. The third hinge groove is provided through the second extension member located on the inner side. The inner end of the second extension member located on the outer side is also provided with the third hinge groove. The outer end of the second extension member located on the outer side is provided with a large hole communicating with the third hinge groove thereon. The body of the other non-second extension member located on the other outer side is also provided with a corresponding large hole.
9. A track structure capable of achieving a flat-angled inverted back as described in claim 4, characterized in that: It also includes a rotating shaft, with the connecting gear disposed on one side of the rotating shaft, and the other side of the rotating shaft passing through the lower transition block and connecting the upper track to the lower transition block.
10. A track structure capable of achieving a flat-angled inverted back as described in any one of claims 1-3 or 5-9, characterized in that: The upper rack includes an upper tooth segment, and the lower rack includes a lower tooth segment. The upper tooth segment and the lower tooth segment are offset and interlocked.