Positioning locking device and sofa

Abstract

The application relates to a positioning locking device and a sofa. The positioning locking device comprises a limiting part, a rotating part and a locking part. The limiting part comprises a positioning piece, the rotating part comprises a limiting groove and a locking hole, the positioning piece is arranged in the limiting groove and can move in the limiting groove, the locking part is arranged in cooperation with the locking hole and can be clamped in the locking hole to limit the rotation of the rotating part. When the locking part is clamped in the locking hole, the rotating part cannot rotate. Based on the above arrangement, the limiting groove on the rotating part can rotate with the rotating part, so that the positioning piece moves in the limiting groove. When the positioning piece contacts two sides of the limiting groove, it is blocked. The rotation range, that is, the angle at which the rotating part can rotate. At the same time, the rotation of the rotating part also drives the rotation of the locking hole, and when the locking hole rotates to the locking part, the locking part is clamped with the locking hole, so that the rotating part is locked. At this time, the rotating part cannot rotate.

Description

Technical Field

[0001] This application relates to the field of sofas, and more particularly to a positioning and locking device and a sofa. Background Technology

[0002] A sofa typically consists of a backrest and a seat cushion. The seat cushion provides support and comfort, and its internal filling can be foam, springs, latex, down, etc., covered with fabric or leather. The backrest provides back support and has a similar structure to the seat cushion, also including filling and fabric.

[0003] However, in conventional designs, the headrest and seat cushion are fixed to each other, which cannot meet the user's needs. Utility Model Content

[0004] The purpose of this application is to provide a positioning and locking device and a sofa to address some or all of the shortcomings in the related technology.

[0005] According to a first aspect of the embodiments of this application, a positioning and locking device is provided, the positioning and locking device comprising:

[0006] The limiting part includes a positioning element;

[0007] The rotating part includes a limiting groove and a locking hole, and the positioning member is disposed in the limiting groove and can move within the limiting groove;

[0008] A locking part is provided to cooperate with the locking hole and can be locked in the locking hole to restrict the rotation of the rotating part;

[0009] When the locking part is engaged in the locking hole, the rotating part cannot rotate.

[0010] Based on the above configuration, the limiting groove on the rotating part can rotate with the rotating part, allowing the positioning member to move within the limiting groove. When the positioning member contacts both sides of the limiting groove, it will be blocked. This range of rotation is the angle that the rotating part can rotate. Simultaneously, the rotation of the rotating part will also cause the locking hole to rotate. When the locking hole rotates to the locking part, the locking part engages with the locking hole, thereby locking the rotating part. At this time, the rotating part cannot rotate.

[0011] The above settings allow the rotating part to have multiple limited positions, meaning that customers can adjust the position of the headrest according to their actual operating needs, thereby obtaining a more comfortable sitting or lying posture.

[0012] In some alternative embodiments, the rotating part includes a rotation center, the limiting groove is configured as an arc, and the arc is arranged with the rotation center as the center;

[0013] The rotating part is rotatable so that the limiting groove and the positioning member rotate relative to each other.

[0014] Based on the above settings, since the limiting groove is set to an arc shape, it can match the rotation of the rotating part well, so that the rotating part will not come into contact with the positioning part during rotation, thus allowing the rotation to be smoother and more responsive.

[0015] In some optional embodiments, the limiting groove includes a first end and a second end located at both ends, with the line connecting the first end and the rotation center being a first line, and the line connecting the second end and the rotation center being a second line, wherein the included angle between the first line and the second line is greater than or equal to 10° and less than or equal to 180°.

[0016] Within this range, on the one hand, the rotation of the rotating part can be made practically meaningful, that is, to make the user more comfortable. On the other hand, the headrest will not detach from the seat cushion.

[0017] In some alternative embodiments, the rotating part includes a rotation center, and the number of locking holes is multiple, with the multiple locking holes spaced apart and the distance from the multiple locking holes to the rotation center being equal.

[0018] Based on the above configuration, the distance from the headrest to the center of rotation of the multiple locking holes is equal, meaning that the same locking part can be used when the rotating part is rotating. Furthermore, the multiple locking holes allow the user to select from multiple positions.

[0019] In some alternative embodiments, the rotating part includes a rotation center, which includes a plurality of circular lines centered at the rotation center, and the radii of the circular lines to the rotation center are different.

[0020] The limiting groove and the locking hole are located on the same circular line; or, the limiting groove and the locking hole are located on different circular lines.

[0021] In this embodiment, the limiting groove and the locking hole are located on the same circular line. On the one hand, only one circular line needs to be determined, making the manufacturing and design process more convenient. On the other hand, it allows the area occupied by the limiting part by the limiting groove and the locking hole to be moderate, without increasing the area of ​​the limiting part.

[0022] In some alternative embodiments, the locking part includes a pull cord and a locking pin, the pull cord and the locking pin being connected together, and the locking pin being configured to cooperate with the locking hole.

[0023] The locking pin can disengage from or enter the locking hole under the action of the pull rope.

[0024] The aforementioned locking pin and locking hole are designed to engage, and a pull cord can be positioned next to the headrest. When the user wants to adjust the position of the headrest, simply pull the cord to disengage the locking pin from the locking hole, allowing the rotating part to rotate. Once adjusted to the desired position, simply release the cord and the locking pin will allow the headrest to move under gravity or other forces.

[0025] In some alternative embodiments, the locking part includes an elastic element that is configured to cooperate with the locking pin;

[0026] When the pull cord pulls the locking pin away from the locking hole, the elastic element is compressed. When the pull cord is released, the elastic element releases energy to push the locking pin toward the rotating part.

[0027] The elastic element helps the locking pin move down better to engage with the locking hole, and it also prevents the locking pin from automatically disengaging from the locking hole due to vibration or handling, thus ensuring proper locking.

[0028] In some alternative embodiments, the locking part includes a fixing member, the locking pin includes a protrusion, the elastic member is sleeved on the locking pin, and the elastic member is disposed between the protrusion and the fixing member, and the fixing member is connected to the limiting part;

[0029] When the pull cord pulls the locking pin, the protrusion moves toward the fixing member to compress the elastic member. When the pull cord releases the locking pin, the elastic member releases energy to push the protrusion away from the fixing member.

[0030] The aforementioned elastic element is constrained on the locking pin and sandwiched between the protrusion and the fixing element. As the protrusion moves upward, it is compressed. Once the tension of the pull rope disappears, the locking pin moves downward under the force of gravity and the elastic force of the elastic element, thereby achieving locking.

[0031] In some alternative embodiments, the positioning and locking device includes a slot, which is fixed to the limiting portion. The slot includes a groove, and the pull rope is engaged in the groove.

[0032] The aforementioned slot effectively secures the pull cord, preventing it from becoming tangled. Furthermore, because the pull cord follows a specific path under the fixation of the slot, its stability is enhanced, preventing it from getting tangled inside the seat cushion due to repeated pulling.

[0033] According to a second aspect of the embodiments of this application, a sofa is provided, the sofa comprising:

[0034] Pillow area;

[0035] Seat cushion section;

[0036] As described in any of the above embodiments, the positioning and locking device has the headrest portion connected to the rotating portion, the headrest portion being rotatably disposed along the limiting portion, and the limiting portion being disposed on the seat cushion portion.

[0037] The beneficial technical effects of the technical solutions provided in this application are:

[0038] The system comprises a limiting part, a rotating part, and a locking part. The limiting part includes a positioning element, and the rotating part includes a limiting groove and a locking hole. The positioning element is disposed within the limiting groove and can move within it. The locking part is fitted into the locking hole and can be engaged to restrict the rotation of the rotating part. When the locking part is engaged in the locking hole, the rotating part cannot rotate.

[0039] The limiting groove on the rotating part can rotate with the rotating part, allowing the positioning element to move within the limiting groove. When the positioning element contacts both sides of the limiting groove, it will be blocked. This range of rotation is the angle that the rotating part can rotate. Simultaneously, the rotation of the rotating part will also cause the locking hole to rotate. When the locking hole rotates to the locking part, the locking part engages with the locking hole, thereby locking the rotating part. At this time, the rotating part cannot rotate.

[0040] The above settings allow the rotating part to have multiple limited positions, meaning that customers can adjust the position of the headrest according to their actual operating needs, thereby obtaining a more comfortable sitting or lying posture.

[0041] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this application. Attached Figure Description

[0042] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0043] Figure 1 This is a schematic diagram illustrating a mode of sofa according to an embodiment of this application.

[0044] Figure 2 This is a structural schematic diagram of another mode of sofa according to an embodiment of this application.

[0045] Figure 3 This is a structural schematic diagram of another mode of sofa according to an embodiment of this application.

[0046] Figure 4This is a schematic diagram of the positioning and locking device according to an embodiment of this application.

[0047] Figure 5 This is a partial structural schematic diagram of a positioning and locking device according to an embodiment of this application.

[0048] Figure 6 This is a partial structural schematic diagram of a positioning and locking device according to an embodiment of this application from another perspective.

[0049] Figure 7 This is a partial structural schematic diagram from another perspective of a positioning and locking device according to an embodiment of this application.

[0050] Figure 8 This is a partial structural schematic diagram from another perspective of a positioning and locking device according to an embodiment of this application.

[0051] Figure 9 This is a partial structural schematic diagram from another perspective of a positioning and locking device according to an embodiment of this application.

[0052] Explanation of reference numerals in the attached figures

[0053] Sofa 1

[0054] Positioning and locking device 10

[0055] Pillow 20

[0056] Seat cushion 30

[0057] Limiting part 100

[0058] Positioning component 110

[0059] Rotating part 200

[0060] Limiting groove 210

[0061] First end 211

[0062] Second end 212

[0063] Locking hole 220

[0064] Rotation center 230

[0065] Locking unit 300

[0066] 310 pull rope

[0067] Lock pin 320

[0068] Protrusion 321

[0069] Elastic element 330

[0070] Fastener 340

[0071] Card slot part 400

[0072] 410

[0073] First Line L1

[0074] Second line L2 Detailed Implementation

[0075] The technical solutions in the embodiments (or "implementations") of this application will be clearly and completely described herein with reference to the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0076] If the embodiments of this application contain terms relating to directional indications or positional relationships (such as up, down, left, right, front, back, inside, outside, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), such terms are only used to explain the relative positional relationships and movements between components in a specific posture (as shown in the attached figures); if the specific posture changes, the directional indications or positional relationships will also change accordingly. Furthermore, the terms "first" and "second" used in the embodiments of this application are only for descriptive convenience and should not be construed as indicating or implying relative importance.

[0077] Sofa 1 generally consists of a backrest 20 and a seat cushion 30. The seat cushion 30 provides support for sitting comfort, and its internal filling can be foam, springs, latex, down, etc., covered with fabric or leather. The backrest 20 provides back support, and its structure is similar to the seat cushion, also including filling and fabric.

[0078] However, in conventional designs, the headrest 20 and the seat cushion 30 are fixed to each other, which cannot meet the user's needs.

[0079] This application discloses a sofa 1, which includes a backrest portion 20, a seat cushion portion 30, and a positioning and locking device 10. The backrest portion 20 is connected to a rotating portion 200, and the backrest portion 20 is rotatably disposed along a limiting portion 100, which is disposed on the seat cushion portion 30. (Reference) Figures 1-3 As shown, Figure 1 , Figure 2 , Figure 3 These are the three modes of this sofa, and this sofa 1 can be switched between the three modes.

[0080] refer to Figures 4-9 As shown, the positioning and locking device 10 proposed in this application includes a limiting part 100, a rotating part 200 and a locking part 300.

[0081] The limiting part 100 includes a positioning member 110, and the rotating part 200 includes a limiting groove 210 and a locking hole 220. The positioning member 110 is disposed within the limiting groove 210 and can move within the limiting groove 210. The locking part 300 is configured to cooperate with the locking hole 220 and can be locked within the locking hole 220 to restrict the rotation of the rotating part 200. Specifically, when the locking part 300 is locked within the locking hole 220, the rotating part 200 cannot rotate.

[0082] Based on the above configuration, the limiting groove 210 on the rotating part 200 can rotate with the rotating part 200, allowing the positioning member 110 to move within the limiting groove 210. When the positioning member 110 contacts both sides of the limiting groove 210, it will be blocked. This range of rotation is the angle that the rotating part 200 can rotate. Simultaneously, the rotation of the rotating part 200 will also cause the locking hole 220 to rotate. When the locking hole 220 rotates to the locking part 300, the locking part 300 engages with the locking hole 220, thereby locking the rotating part 200. At this time, the rotating part 200 cannot rotate.

[0083] Furthermore, the positioning element 110 and the limiting groove 210 can be interchanged. That is, the positioning element 110 is set on the rotating part 200, while the limiting groove 210 is set at the lower fixed plate of the limiting part 100; in this case, the positioning element 110 rotates with the rotating part 200, while the limiting groove 210 remains fixed. This can also limit the range of rotation angle.

[0084] The above settings allow the rotating part 200 to rotate in multiple limited positions, meaning that customers can adjust the position of the headrest part 20 according to their actual operating needs, thereby obtaining a more comfortable sitting or lying posture.

[0085] In one embodiment, reference Figures 4-9 As shown, the rotating part 200 includes a rotation center 230, and the limiting groove 210 is arc-shaped, with the arc centered on the rotation center 230. The rotating part 200 can rotate to cause the limiting groove 210 and the positioning member 110 to rotate relative to each other.

[0086] Based on the above settings, since the limiting groove 210 is set to an arc shape, it can match the rotation of the rotating part 200 well, so that the rotating part 200 will not come into contact with the positioning part 110 during rotation, thus allowing it to rotate more smoothly and easily.

[0087] In one embodiment, reference Figures 7-9As shown, the limiting groove 210 includes a first end 211 and a second end 212 located at both ends. The line connecting the first end 211 to the rotation center 230 is designated as the first line L1, and the line connecting the second end 212 to the rotation center 230 is designated as the second line L2. If the angle between the first line L1 and the second line L2 is too small, the adjustment limit will be too small, rendering the rotation adjustment meaningless. If the angle between the first line L1 and the second line L2 is too large, the headrest portion 20 will detach from the seat cushion portion 30.

[0088] This application sets the angle between the first line L1 and the second line L2 to be greater than or equal to 10° and less than or equal to 180°. Within this range, on the one hand, the rotation of the rotating part 200 is meaningful, that is, it can make the user more comfortable. On the other hand, the headrest part 20 will not detach from the seat cushion part 30. For example, the angle between the first line L1 and the second line L2 can be 10°, 20°, 30°, 40°, 50°, 60°, 70°, 80°, 90°, 100°, 110°, 120°, 130°, 140°, 150°, 160°, 170°, or 180°.

[0089] In other embodiments, the angle between the first line L1 and the second line L2 can be any angle between 0° and 360°. Rotation can be performed in increments of 3° or 4°.

[0090] In one embodiment, reference Figure 9 As shown, the rotating part 200 includes a rotation center 230 and a plurality of locking holes 220, which are spaced apart and are equidistant from the rotation center 230. For example, the number of locking holes 220 can be 2, 3, 4, 5, 6, etc., as long as the number is greater than or equal to 2, it is within the protection scope of this application.

[0091] Based on the above configuration, the distances from the multiple locking holes 220 to the rotation center 230 are equal, meaning that the same locking part 300 can be used when the rotating part 200 rotates. Furthermore, the multiple locking holes 220 allow the user to select from multiple positions.

[0092] In one embodiment, reference Figures 4-9 As shown, the rotating part 200 includes a rotation center 230, which includes a plurality of circular lines with the rotation center 230 as the center, and the radii of the circular lines to the rotation center 230 are different; the limiting groove 210 and the locking hole 220 are located on the same circular line.

[0093] In this embodiment, the limiting groove 210 and the locking hole 220 are located on the same circular line. On the one hand, only one circular line needs to be determined, which makes the processing design more convenient. On the other hand, it can make the area occupied by the limiting part 100 by the limiting groove 210 and the locking hole 220 moderate, without increasing the area of ​​the limiting part 100.

[0094] In other embodiments, the limiting groove 210 and the locking hole 220 are located on different circular lines.

[0095] The limiting groove 210 and the locking hole 220 are located on different circular lines, which can increase the number of locking holes 220, and the area of ​​the original limiting groove 210 does not need to be considered during the design.

[0096] In one embodiment, reference Figures 4-9 As shown, the locking part 300 includes a pull cord 310 and a locking pin 320. The pull cord 310 and the locking pin 320 are connected together, and the locking pin 320 is engaged with the locking hole 220. The locking pin 320 can disengage from or enter the locking hole 220 under the action of the pull cord 310.

[0097] The aforementioned locking pin 320 is configured to cooperate with the locking hole 220, and the pull cord 310 can be located next to the headrest 20. When the user wants to adjust the position of the headrest 20, they only need to pull the pull cord 310 to disengage the locking pin 320 from the locking hole 220, thereby allowing the rotating part 200 to rotate. Once adjusted to a suitable position, simply release the pull cord 310 and the locking pin 320 can be moved under gravity or other forces.

[0098] In one embodiment, reference Figures 4-9 As shown, the locking part 300 includes an elastic element 330, which is configured to cooperate with the locking pin 320. When the pull cord 310 pulls the locking pin 320 out of the locking hole 220, the elastic element 330 is compressed. When the pull cord 310 is released, the elastic element 330 releases energy to push the locking pin 320 towards the rotating part 200. It should be noted that the elastic element 330 here can be a spring, rubber, etc.

[0099] The elastic element 330 helps the locking pin 320 to move down better to engage with the locking hole 220, and the elastic element 330 also prevents the locking pin 320 from automatically disengaging from the locking hole 220 due to vibration or handling, thus preventing it from engaging in locking.

[0100] In one embodiment, reference Figures 4-9 As shown, the locking part 300 includes a fixing member 340, the locking pin 320 includes a protrusion 321, the elastic member 330 is sleeved on the locking pin 320, and the elastic member 330 is disposed between the protrusion 321 and the fixing member 340. The fixing member 340 is connected to the limiting part 100.

[0101] When the pull cord 310 pulls the locking pin 320, the protrusion 321 moves towards the fixing member 340 to compress the elastic member 330. When the pull cord 310 releases the locking pin 320, the elastic member 330 releases energy to push the protrusion 321 away from the fixing member 340. Referring to the attached drawings, the fixing member 340 can be a screw, directly screwed onto the limiting part 100. It can also be other fixing members, as long as they can be fixed onto the limiting part 100, which is within the scope of protection of this application.

[0102] The aforementioned elastic element 330 is constrained on the locking pin 320 and sandwiched between the protrusion 321 and the fixing element 340. As the protrusion 321 moves upward and is compressed, after the tension of the pull rope 310 disappears, the locking pin 320 moves downward under the force of gravity and the elastic force of the elastic element 330, thereby achieving locking.

[0103] In one embodiment, reference Figures 4-9 As shown, the positioning and locking device 10 includes a slot 400, which is fixed to the limiting part 100. The slot 400 includes a groove 410, and the pull rope 310 is engaged in the groove 410.

[0104] The aforementioned slot 400 can effectively secure the pull cord 310, preventing the cord from becoming tangled. Furthermore, since the pull cord 310 has a defined path under the fixation of the slot 410, its stability is improved, preventing it from getting tangled inside the seat cushion 30 due to repeated pulling.

[0105] It should be noted that the technical solutions or features described in the above embodiments can be combined or supplemented with each other without conflict. The scope of protection of this application is not limited to the precise structures described in the above embodiments and shown in the accompanying drawings; all modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A positioning and locking device, characterized in that, The positioning and locking device includes: The limiting part includes a positioning element; The rotating part includes a limiting groove and a locking hole, and the positioning member is disposed in the limiting groove and can move within the limiting groove; A locking part is provided to cooperate with the locking hole and can be locked in the locking hole to restrict the rotation of the rotating part; When the locking part is engaged in the locking hole, the rotating part cannot rotate.

2. The positioning and locking device as described in claim 1, characterized in that, The rotating part includes a rotation center, and the limiting groove is set in an arc shape, with the rotation center as the center of the circle; The rotating part is rotatable so that the limiting groove and the positioning member rotate relative to each other.

3. The positioning and locking device as described in claim 2, characterized in that, The limiting groove includes a first end and a second end located at both ends. The line connecting the first end and the rotation center is called the first line, and the line connecting the second end and the rotation center is called the second line. The included angle between the first line and the second line is greater than or equal to 10° and less than or equal to 180°.

4. The positioning and locking device as described in claim 1, characterized in that, The rotating part includes a rotation center, and there are multiple locking holes. The multiple locking holes are spaced apart, and the distance from the multiple locking holes to the rotation center is equal.

5. The positioning and locking device as described in claim 1, characterized in that, The rotating part includes a rotation center, which includes a plurality of circular lines centered at the rotation center, and the radii of the circular lines to the rotation center are different. The limiting groove and the locking hole are located on the same circular line; or, the limiting groove and the locking hole are located on different circular lines.

6. The positioning and locking device as described in claim 1, characterized in that, The locking part includes a pull cord and a locking pin, the pull cord and the locking pin being connected together, and the locking pin being fitted into the locking hole. The locking pin can disengage from or enter the locking hole under the action of the pull rope.

7. The positioning and locking device as described in claim 6, characterized in that, The locking part includes an elastic element, which is configured to cooperate with the locking pin; When the pull cord pulls the locking pin away from the locking hole, the elastic element is compressed. When the pull cord is released, the elastic element releases energy to push the locking pin toward the rotating part.

8. The positioning and locking device as described in claim 7, characterized in that, The locking part includes a fixing member, the locking pin includes a protrusion, the elastic member is sleeved on the locking pin, and the elastic member is disposed between the protrusion and the fixing member, and the fixing member is connected to the limiting part; When the pull cord pulls the locking pin, the protrusion moves toward the fixing member to compress the elastic member. When the pull cord releases the locking pin, the elastic member releases energy to push the protrusion away from the fixing member.

9. The positioning and locking device as described in claim 6, characterized in that, The positioning and locking device includes a slot, which is fixed to the limiting part. The slot includes a groove, and the pull rope is engaged in the groove.

10. A sofa, characterized in that, The sofa includes: Pillow area; Seat cushion section; The positioning and locking device according to any one of claims 1-9, wherein the headrest portion is connected to the rotating portion, the headrest portion is rotatably disposed along the limiting portion, and the limiting portion is disposed on the seat cushion portion.

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