Track structure capable of achieving flat-angle back chamfering

Abstract

The track structure comprises an upper track and a lower track, the upper track comprises an upper rack, one end of the upper rack is provided with an upper half tooth section, the lower track comprises a lower rack, one end of the lower rack is provided with a lower half tooth section, and the upper half tooth section and the lower half tooth section are matched in a staggered mode. The vertical end of the upper rack is connected with an upper connecting piece in a matched mode, a connecting gear is arranged on the upper connecting piece, the vertical end of the lower rack is connected with a lower connecting piece in a matched mode, a connecting rack is arranged on the lower connecting piece, the connecting gear is in tooth-shaped meshing connection with the connecting rack, and the upper track and the lower track are in meshing connection through the connecting gear and the connecting rack. According to the structural design, by means of the tooth limiting effect of the connecting gear and the connecting rack and staggered hinging of the upper half tooth section and the lower half tooth section, it is achieved that teeth can be kept aligned in a specific mode when the upper rack and the lower rack rotate.

Description

Technical Field

[0001] The utility model relates to the field of massage appliances, in particular to a connection structure of a track. Background Art

[0002] Most massage chairs currently on the market can adjust the massage area by adjusting the movement of the massage mechanism. However, the variable-angle rails on these massage chairs struggle to achieve precise gear meshing at any angle, often causing interference between the gear and rack in certain locations. Furthermore, the variable angles on these current massage chairs are limited to a narrow range, making wide-angle reversing impossible. Utility Model Content

[0003] In order to solve the above technical problems, the purpose of the present utility model is to provide a track structure that can achieve flat-angle inversion.

[0004] The utility model is realized by the following technical solutions:

[0005] A track structure capable of realizing flat-angle inversion comprises an upper track and a lower track, wherein the upper track comprises an upper rack and the lower track comprises a lower rack, and the upper rack and the lower rack are staggered and cross-matched.

[0006] The upper rack is connected to an upper connecting piece at its lateral vertical end along the rack direction, and a connecting gear is provided on the upper connecting piece. The lower rack is connected to a lower connecting piece at its lateral vertical end along the rack direction, and a connecting rack is provided on the lower connecting piece. The connecting gear and the connecting rack are tooth-meshed with each other.

[0007] The upper rail and the lower rail are meshed and connected via the connecting gear and the connecting rack.

[0008] By rotating the upper rail, the upper rack rotates around the center of the connecting gear, and under the tooth-shaped limiting cooperation between the connecting gear and the connecting rack, the teeth of the upper rack and the teeth of the lower rack are kept aligned in a specific manner.

[0009] In an embodiment of the present invention, a hinged slide is provided on the upper rail, and the hinged slide includes a first hinged slide provided on the upper rack and / or the upper connecting member.

[0010] By rotating the upper rail, the hinge point between the upper rail and the lower rail can move along the hinge slot.

[0011] In a preferred embodiment, the upper rack includes an upper half tooth segment, and the lower rack includes a lower half tooth segment, and the upper half tooth segment and the lower half tooth segment are staggered and cross-matched.

[0012] In an embodiment of the present invention, a sinking groove is provided on the lower connecting member, and the connecting rack is provided in the sinking groove.

[0013] A second hinged slide is further provided in the sink, and the second hinged slide is provided along the vertical end of the connecting rack.

[0014] In an embodiment of the present invention, a transition connection block is also connected between the upper rail and the lower rail, and the transition connection 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 hinged groove for being hinged to the upper transition block.

[0015] The upper transition block can move along the upper connecting member, the lower transition block can move along the lower connecting member, and the hinge point between the upper transition block and the lower transition block can also move along the third hinge slot.

[0016] In an embodiment of the present invention, the upper transition block includes a main body, one end of the main body is provided with a first extension piece, and the first extension piece is provided with a first hinge hole.

[0017] The main body is further provided with a ridge, the upper connecting piece is provided with a sliding groove matched with the main body, and the sliding groove is further provided with a notch matched with the ridge.

[0018] In an embodiment of the present invention, the lower transition block includes a body, and a second hinge hole hinged to the upper connecting piece is provided at the side wall end of the body.

[0019] The third hinge slot is arranged on the main body.

[0020] An inserting piece is further provided at one end of the body close to the lower rail, and a slot matched with the inserting piece is provided on the lower rail.

[0021] In an embodiment of the present 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 can move along the slot direction.

[0022] In an embodiment of the present invention, the main body includes a second extension member arranged at an interval, the third hinged groove is arranged through the second extension member located on the inner side, the inner end of the second extension member located at the outer end is also provided with the third hinged groove, and the outer end of the second extension member at the outer end is provided with a large hole communicating with the third hinged groove thereon. Similarly, a corresponding large hole is also provided on the main body of the non-second extension member located at the outer end.

[0023] In an embodiment of the present invention, a rotating shaft is further included, the connecting gear is arranged on one side end of the rotating shaft, and the other side end of the rotating shaft passes through the lower transition block and connects the upper track with the lower transition block.

[0024] In an embodiment of the present invention, screw holes and fasteners are further included, and the upper rail, the lower rail, and the lower transition block are hinged together by the fasteners passing through the screw holes.

[0025] The utility model provides a track structure capable of realizing flat angle reverse backing, which has the following beneficial effects:

[0026] 1. Through the cross-jointed hinged structure of the upper rack and the lower rack, and the meshing rotation structure of the connecting gear and the connecting rack, under the condition of the tooth profile limit cooperation of the connecting gear and the connecting rack, the teeth of the upper rack and the teeth of the lower rack are kept aligned in a specific way, so that when the massage walking movement passes through the connection, it can transition smoothly without interference between the walking gear and the rack.

[0027] 2. Multiple hinged slots are provided, including the first hinged slot, the second hinged slot, and the third hinged slot. By setting multiple hinged slots, the hinge force between the upper track and the lower track is shared, more supporting surfaces are provided, and the stability of the mutual movement between the upper track and the lower track is greatly enhanced.

[0028] 3. The transition block increases the range of rotation and movement between the upper and lower rails, providing space for a wide range of angles. Furthermore, the main body, ridge structure, body, and insert structure on the upper and lower transition blocks, respectively, enhance the smoothness of movement between the upper transition block and the upper rail, and between the lower transition block and the lower rail.

[0029] 4. The second extension pieces arranged at intervals and the structural pieces plugged in with them also enhance the stability of the connection between the upper transition block and the lower transition block.

[0030] 5. The upper rack includes an upper half tooth segment, and the lower rack includes a lower half tooth segment. The upper half tooth segment and the lower half tooth segment are staggered and cross-coordinated to achieve better space saving and stable support for the running gear of the massage movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solution of the present invention, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0032] Figure 1 It is an exploded view of the present utility model.

[0033] Figure 2 It is an exploded view of the present utility model.

[0034] Figure 3 This is a schematic diagram of the utility model Figure 1 .

[0035] Figure 4 This is a schematic diagram of the utility model Figure 2 .

[0036] Figure 5 It is a three-dimensional diagram of the utility model tilted and reversed.

[0037] Figure 6 This is a schematic diagram of the utility model tilted back Figure 1 .

[0038] Figure 7 This is a schematic diagram of the utility model tilted back Figure 2 .

[0039] Figure 8 This is a schematic diagram of the utility model tilted back Figure 3 .

[0040] Figure 9 This is a schematic diagram of the utility model tilted back Figure 4 .

[0041] Figure 10 It is a top view of the present utility model.

[0042] Figure 11 yes Figure 10 Cross-sectional view at AA in the middle.

[0043] Figure 12 It is a three-dimensional diagram of the flat-angle inverted back of the utility model.

[0044] Figure 13 The utility model is a schematic diagram of walking with the back tilted.

[0045] Figure 14 It is a cross-sectional view of the utility model when it is tilted and reversed.

[0046] Figure 15 The utility model is a schematic diagram of walking with a flat-angle backrest.

[0047] Figure 16 It is a walking cross-sectional view of the utility model with a flat angle and an inverted back.

[0048] Figure 17 This is a schematic diagram of another embodiment of the upper rack and lower rack of the utility model. Figure 1 .

[0049] Figure 18 This is a schematic diagram of another embodiment of the upper rack and lower rack of the utility model. Figure 2 .

[0050] In the figure: 1-upper rail; 11-upper rack; 111-upper half tooth segment; 12-upper connecting piece; 13-connecting gear; 14-slide; 15-notch; 16-flap structure; 2-lower rail; 21-lower rack; 211-lower half tooth segment; 22-lower connecting piece; 23-connecting rack; 24-sink; 25-transverse slot; 26-longitudinal slot; 31-first hinged slide; 32-second hinged slide; 33 -Third articulated slot; 4-transition connection block; 5-upper transition block; 51-main body; 52-first extension piece; 53-first hinge hole; 54-convex ridge; 6-lower transition block; 61-main body; 62-second hinge hole; 63-second extension piece; 64-transverse insert; 65-longitudinal insert; 66-large hole; 7-rotating axis; 8-screw hole; 9-travel guide rail; 100-travel gear; 200-travel guide wheel. DETAILED DESCRIPTION

[0051] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0052] Referring to the accompanying drawings, a track structure capable of achieving flat-angle reverse 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 staggered and intersecting. The purpose of the intersecting design of the upper rack 11 and the lower rack 21 is to support and enable the travel of the massage movement's travel gear when it moves to the transition section between the upper rack 11 and the lower rack 21.

[0053] More specifically, the upper rack 11 is coupled to an upper connecting member 12 at its vertical end, which is located along the rack direction. A connecting gear 13 is mounted on this upper connecting member 12. The lower rack 21 is coupled to a lower connecting member 22 at its vertical end, which is located along the rack direction. A connecting rack 23 is mounted on this lower connecting member 22. The connecting gear 13 is coupled to the connecting rack 23. Of course, the structural design of the connecting gear 13 could alternatively consist of a portion of a gear or several arcuate teeth, as long as it can cooperate with the connecting rack 23 and achieve the limited movement of the connecting rack 23.

[0054] In addition, the upper rail 1 and the lower rail 2 are connected by the connecting gear 13 and the connecting rack 23, specifically a toothed engagement connection.

[0055] The teeth design of the connecting gear 13 and the connecting rack 23 must be consistent with the specifications of the upper rack 11 and the lower rack 21 or be an integer multiple thereof, and the design position of the connecting rack 23 is preferably aligned with the lower rack 21.

[0056] In a preferred embodiment of the present application, the tooth specifications of the connecting gear 13 and the connecting rack 23 are consistent with those 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 rail 1, the upper rack 11 will rotate around the center of the connecting gear 13. Due to the tooth-shaped limit cooperation of the connecting gear 13 and the connecting rack 23 with the same tooth specifications, the teeth of the upper rack 11 and the teeth of the lower rack 21 are kept aligned in a specific way, thereby ensuring that the running wheels of the running movement can smoothly pass through the connecting section between the upper rail 1 and the lower rail 2. The connecting gear 13 and the connecting rack 23 play a guiding role.

[0058] In a preferred embodiment, the shape design of the upper rack 11 and the lower rack 21 can be as shown in the appendix of 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 in the transition section where the upper rack 11 and the lower rack 21 are connected, the upper rack 11 and the lower rack 21 support the traveling gear 100 at the same time.

[0059] In another embodiment, the upper rack 11 includes an upper half tooth segment 111, and the lower rack 21 includes a lower half tooth segment 211. The upper half tooth segment 111 and the lower half tooth segment 211 are staggered and cross-matched to achieve better space saving and stable support for the massage movement running gear 100.

[0060] Furthermore, the upper rail 1 is provided with an articulated slot, and by rotating the upper rail 1, the hinge point between the upper rail 1 and the lower rail 2 can move along the articulated slot. The articulated slot that enables the upper rail 1 and the lower rail 2 to rotate includes a first articulated slot 31 provided on the upper half tooth segment 111 and the upper connecting member 12. The first articulated slot 31 is shaped like a runway, with the long end of the runway slightly tilted and the arc opening facing upward. Its purpose is to provide a clearance space when the upper rail 1 and the lower rail 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 rail 1 and the lower rail 2 can move along the first articulated slot 31, thereby ensuring a one-to-one correspondence between the teeth of the upper half tooth segment 111 and the lower half tooth segment 211. In other embodiments, the first hinge slot 31 can also be disposed on the upper connecting member 12 or on the upper half tooth segment 111 alone, but the double-point hinge method of the present application is more stable and smooth.

[0061] Furthermore, a recessed groove 24 is provided on the lower connecting member 22, and the connecting rack 23 is arranged in the recessed groove 24. The design of the recessed groove 24 not only makes the structure of the lower connecting member 22 more compact, but also provides a limiting guide space for the connecting gear 13, thereby better ensuring the coordination between the connecting gear 13 and the connecting rack 23.

[0062] More specifically, a second hinged chute 32 is further provided in the sink 24 . The second hinged chute 32 is provided along the vertical end of the connecting rack 23 . The second hinged chute 32 is in the shape of a runway.

[0063] Furthermore, a transition connection block 4 is cooperatively connected between the upper rail 1 and the lower rail 2. The transition connection block 4 includes an upper transition block 5 and a lower transition block 6. One end of the upper transition block 5 is hinged to the lower transition block 6, and one end of the lower transition block 6 is provided with a third hinged groove 33 for being hinged to the upper transition 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 points between the upper transition block 5 and the lower transition block 6 can also move along the third hinge slot 33.

[0065] More specifically, the upper transition block 5 includes a main body 51, and a first extension piece 52 is extended from one end of the main body 51. The first extension piece 52 is narrower than the main body 51 and is connected to the middle end of the main body 51. A first hinge hole 53 is also provided on the first extension piece 52.

[0066] Furthermore, a ridge 54 is provided on the main body 51 , and a sliding groove 14 that matches with the main body 51 is provided on the upper connecting member 12 . A notch 15 that matches and connects with the ridge 54 is also provided on the sliding groove 14 .

[0067] Further, the lower overpass block 6 comprises a body 61, the side wall end of which is provided with a second hinge hole 62 hinged with the upper connecting piece 12.

[0068] Further, the third hinge sliding groove 33 is arranged on the body 61, and more specifically, the third hinge sliding groove 33 is in the shape of a hook, and the arrangement of the hook-shaped sliding groove enables an upper and lower space for movement of the upper overpass block 5 and the lower overpass block 6. In addition, the body 61 further comprises a second extension piece 63 arranged at intervals, and the third hinge sliding groove 33 is arranged through the second extension piece 63 on the inner side. The inner side of the second extension piece 63 on the outer side end is also provided with a third hinge sliding groove 33, and the outer side end of the second extension piece 63 on the outer side end is provided with a large hole 66 communicating with the third hinge sliding groove 33 thereon. Similarly, the body 61 on the outer side end without the second extension piece is also provided with a corresponding large hole 66.

[0069] More specifically, during the cooperation of the upper overpass block 5 and the lower overpass block 6, the first extension piece 52 is inserted into the second extension piece 63 arranged at intervals. In addition, the upper connecting block 12 has a protruding sheet structure 16, which is inserted between the body 61 and the second extension piece 63. Through the second extension piece 63 arranged at intervals and the body 61, and in cooperation with the sheet structure 16 and the first extension piece 52, the linkage design between the above-mentioned parts greatly enhances the consistency and stability of the cooperation between the lower overpass block 6 and the upper overpass block 5, the upper overpass block 5 and the upper rail 1, and the upper rail 1 and the lower overpass block 6.

[0070] Further, the body 61 close to one end of the lower rail 2 is also provided with an insertion piece, and the lower rail 2 is provided with an insertion slot matched with the insertion piece, and more specifically, the insertion piece comprises a transverse insertion piece 64 or / and a longitudinal insertion piece 65, and the insertion slot comprises a transverse insertion slot 25 or / and a longitudinal insertion slot 26, and the lower overpass block 6 can move along the direction of the insertion slot. Through the guiding effect of the insertion slot and the insertion piece, the above-mentioned structure design further improves the smoothness and stability of the mutual movement between the lower overpass block 6 and the lower rail 2.

[0071] In the specific embodiments given in the present application, longitudinal and transverse longitudinal insertion slots 26, transverse insertion slots 25, longitudinal insertion pieces 65, and transverse insertion pieces 64 are arranged at the same time.

[0072] Further, a rotating shaft 7 is also provided, and the connecting gear 13 is arranged on one side end of the rotating shaft 7, and the other side end of the rotating shaft 7 penetrates through the lower overpass block 6 and connects the upper rail 1 and the lower overpass block 6 with each other.

[0073] Furthermore, it also includes a screw hole 8 and a fastener, through which the fastener passes through the screw hole 8 to hinge the upper rail 1, the lower rail 2, and the lower transition block 6 together.

[0074] During use, refer to the instruction manual. Figure 13 To the instruction manual Figure 16 As shown, the massage mechanism includes a travel gear 100 and a travel guide wheel 200. The upper track 1 and the lower track 2 of the present application are both provided with a travel guide rail 9 that cooperates with the travel guide wheel 200. In a preferred embodiment, the travel guide rail 9 is provided at the inner end 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 arrangement of the upper half tooth segment 111 and the lower half tooth segment 211, as well as the teeth limiting effect of the connecting gear 13 and the connecting rack 23, the upper track 1 can keep the teeth of the upper half tooth segment 111 and the teeth of the lower half tooth segment 211 in completely corresponding positions when rotating around the lower track 2, thereby enabling the travel gear 100 to smoothly transition between the upper half tooth segment 111 and the lower half tooth segment 211. In addition, due to the clearance space design of the hinged 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 inverted at a right angle to the lower track 2.

[0075] The foregoing description shows and describes preferred embodiments of the present invention. As previously mentioned, it should be understood that the present invention is not limited to the form disclosed herein and should not be construed as excluding other embodiments. Instead, the present invention can be used in various other combinations, modifications, and environments and can be modified within the scope of the present invention as taught herein or through the techniques or knowledge of the relevant art. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention are intended to be protected by the claims appended hereto.

Claims

1. A track structure capable of realizing flat-angle inverted backing, 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, and the upper rack and the lower rack are staggered and cross-matched; The upper rack is connected to an upper connecting piece at a vertical end on the side of the rack direction, and a connecting gear is provided on the upper connecting piece. The lower rack is connected to a lower connecting piece at a vertical end on the side of the rack direction, and a connecting rack is provided on the lower connecting piece. The connecting gear and the connecting rack are meshed with each other. The upper rail and the lower rail are meshed and connected via the connecting gear and the connecting rack; The upper rail is rotated, and the upper rack rotates around the center of the connecting gear. Under the tooth-shaped limiting cooperation between the connecting gear and the connecting rack, the teeth of the upper rack and the teeth of the lower rack are kept aligned.

2. The track structure capable of realizing flat-angle inversion according to claim 1, characterized in that: The upper rail is provided with an articulated slide groove, and the articulated slide groove includes a first articulated slide groove provided on the upper rack and / or the upper connecting member.

3. The track structure capable of realizing flat-angle inversion according to claim 1, characterized in that: The lower connecting member is provided with a sinking groove, and the connecting rack is arranged in the sinking groove; A second hinged slide is further provided in the sink, and the second hinged slide is provided along the vertical end of the connecting rack.

4. A track structure capable of achieving flat-angle inversion according to any one of claims 1 to 3, characterized in that: A transition connection block is further connected between the upper track and the lower track, and the transition connection 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 hinged slot for hinged connection with the upper transition block; The upper transition block can move along the upper connecting member, the lower transition block can move along the lower connecting member, and the hinge point between the upper transition block and the lower transition block can also move along the third hinge slot.

5. The track structure capable of realizing flat-angle inversion according to claim 4, characterized in that: The upper transition block comprises a main body, one end of which is provided with a first extension piece, and the first extension piece is provided with a first hinge hole; The main body is further provided with a ridge, the upper connecting piece is provided with a sliding groove matched with the main body, and the sliding groove is further provided with a notch matched with the ridge.

6. The track structure capable of realizing flat-angle inversion according to claim 4, characterized in that: The lower transition block comprises a body, and a second hinge hole hinged to the upper connecting piece is provided at a side wall end of the body; The third hinge slot is provided on the body; An inserting piece is further provided at one end of the body close to the lower rail, and a slot matched with the inserting piece is provided on the lower rail.

7. The track structure capable of realizing flat-angle inversion according to claim 6, characterized in that: The inserting piece includes a transverse inserting piece and / or a longitudinal inserting piece, the slot includes a transverse slot and / or a longitudinal slot, and the lower transition block can move along the slot direction.

8. The track structure capable of realizing flat-angle inversion according to claim 6, characterized in that: The main body includes a second extension member arranged at an interval, the third hinged slot is arranged through the second extension member located on the inner side, the inner end of the second extension member located at the outer end is also provided with the third hinged slot, the outer end of the second extension member at the outer end is provided with a large hole communicating with the third hinged slot thereon, and a corresponding large hole is also provided on the main body located at the other outer end that is not the second extension member.

9. The track structure capable of realizing flat-angle inversion according to claim 4, characterized in that: It also includes a rotating shaft, the connecting gear is arranged on one side end of the rotating shaft, and the other side end of the rotating shaft passes through the lower transition block and connects the upper track with the lower transition block.

10. A track structure capable of achieving flat-angle inversion according to any one of claims 1-3 or 5-9, characterized in that: The upper rack includes an upper half tooth segment, and the lower rack includes a lower half tooth segment. The upper half tooth segment and the lower half tooth segment are staggered and cross-matched.

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