Locking mechanism of seat roller and seat

Abstract

The utility model discloses a seat roller locking mechanism and a seat, the seat roller locking mechanism comprises a mounting rack, a roller, a locking block and an operating piece; the roller is pivoted on the mounting frame, and a plurality of clamping grooves arranged around the central axis of the roller are formed in the roller; a sliding groove extending up and down is formed in the mounting frame, and two clamping grooves arranged in the height direction are formed in the side wall of the sliding groove; the locking block is embedded in the sliding groove in a sliding mode, an elastic buckle and a plug pin are arranged on the locking block, and the elastic buckle can move up and down in the sliding groove along with the locking block so that the elastic buckle can be combined with the two clamping grooves respectively. When the elastic buckle is combined with the lower clamping groove, the plug pin is inserted into one clamping groove, and when the elastic buckle is combined with the upper clamping groove, the plug pin is separated from the clamping groove. The operating piece is used for driving the locking block to move up and down in the sliding groove. The utility model has the advantages of simple integral structure and better operation convenience.

Description

Technical Field

[0001] The utility model relates to the technical field of seats, in particular to a locking mechanism for seat rollers and a seat. Background Art

[0002] Traditional seats are usually equipped with fixed legs or bases. When moving the seat position, the seat needs to be lifted up, which causes many inconveniences during use. Some existing seats, such as children's seats and office chairs, usually have rollers installed on the legs or base of the seats. When moving the seat position, the user can put the soles of their feet on the ground and apply a little force to move the seat to the required position. There is no need to get up or move the seat when moving the seat. In order to ensure the normal use of the seat, a locking mechanism is usually required. When the seat position is moved to the required position, the rollers are locked by the locking mechanism. Although the existing locking mechanism can lock and unlock the rollers, its operation convenience is poor, which makes the seat inconvenient to use. Utility Model Content

[0003] The purpose of the utility model is to provide a locking mechanism for a seat roller and a seat, which have a simple structure and can be easily operated.

[0004] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0005] The locking mechanism of the seat roller includes a mounting frame, a roller, a locking block, and an operating member;

[0006] The roller is pivotally connected to the mounting frame, and a plurality of engaging grooves arranged around the central axis of the roller are provided on the mounting frame; a slide groove extending up and down is provided on the mounting frame, and two engaging grooves arranged in the height direction are provided on the side wall of the slide groove;

[0007] The locking block is slidably embedded in the slide groove. The locking block is provided with an elastic buckle and a latch. The elastic buckle can move up and down in the slide groove along with the locking block so that the elastic buckle can be respectively engaged with the two clamping grooves; when the elastic buckle is engaged with the lower clamping groove, the latch is inserted into one of the clamping grooves; when the elastic buckle is engaged with the upper clamping groove, the latch is disengaged from the clamping groove;

[0008] The operating member is used to drive the locking block to move up and down in the sliding groove.

[0009] Preferably, two opposing connecting ears are provided on the mounting frame, the tops of the two connecting ears form a top wall, the two connecting ears and the top wall form a receiving space, the roller is placed in the receiving space and is pivotally engaged with the two connecting ears through a rotating shaft.

[0010] Preferably, the slide groove extends in the up-down direction, and a through hole is provided on the top wall to connect the bottom of the slide groove with the accommodating space, and the latch extends downward from the bottom surface of the locking block so that the latch is slidably connected in the through hole.

[0011] Preferably, the top of the slide extends to the top surface of the mounting bracket to form an opening, and the locking block is embedded in the slide from the top opening of the slide downward, and a cover is detachably fixed to the outside of the mounting bracket, and the cover seals the top surface of the mounting bracket and the outside of the end surface.

[0012] Preferably, a guide groove extending up and down is provided on the end surface of the mounting frame, a through groove connected to the slide groove is provided on the bottom surface of the guide groove, and an avoidance groove is provided on the cover plate. The operating member is slidably embedded in the guide groove, one end of which passes through the through groove and is fixedly connected to the locking block, and the other end passes through the avoidance groove and protrudes from the outside of the cover plate, and a toggle switch placed on the outside of the cover plate is fixedly connected to the other end of the operating member.

[0013] Preferably, a positioning groove is provided on the side of the locking block, and one end of the operating member is provided with a positioning column that passes through the through groove and is inserted into the positioning groove. The positioning column and the locking block are fixed together by screws.

[0014] Preferably, two latching grooves arranged vertically are provided on two opposite side walls of the slide, and two elastic buckles respectively facing the two opposite side walls of the slide are installed on the locking block.

[0015] Preferably, the elastic buckle includes a shell with an opening at one end, a spring located inside the shell, and a steel ball located at the opening of the shell. The spring is used to provide an elastic stress to push the steel ball toward the outside of the opening of the shell. A mounting hole is provided on the locking block, and the shell is fixed in the mounting hole so that a part of the steel ball protrudes from the surface of the locking block and is embedded in the positioning groove.

[0016] Preferably, the width of the latch gradually decreases from top to bottom, and the width of the engaging groove gradually decreases from the edge of the roller toward the center of the roller.

[0017] The seat includes the above-mentioned locking mechanism for the seat rollers. Compared with the prior art, the beneficial effects of the present invention are:

[0018] In the present invention, the locking block is driven to move by the operating member, so that the pin on the locking block is inserted into the engaging groove on the roller, or the pin is disengaged from the engaging groove on the roller, thereby realizing locking or unlocking the rotational freedom of the roller by the locking block, and the position of the locking block in the locked state and the unlocked state is locked by the elastic buckle on the locking block and the two engaging grooves on the side wall of the slide groove, thereby preventing the movement of the locking block when the seat is in use and affecting the normal use of the seat. The overall structure is simple, and the locking and unlocking operations can be realized by only turning the operating member, which has better operation convenience. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural diagram of the utility model;

[0020] Figure 2 It is a cross-sectional view of the present invention and illustrates a working state of the present invention;

[0021] Figure 3 This is another schematic diagram of the working state of the utility model;

[0022] Figure 4 for Figure 2 AA cross-sectional view;

[0023] Figure 5 for Figure 1 Schematic diagram of the structure of the middle roller.

[0024] Among them: 10. Mounting frame; 11. Connecting ear; 111. Axis hole; 12. Accommodating space; 13. Top wall; 131. Through hole; 14. Guide groove; 141. Through groove; 15. Slide groove; 16. Positioning groove; 20. Roller; 201. Axis hole; 21. Snap-in groove; 30. Lock block; 31. Latch; 32. Positioning groove; 33. Mounting hole; 40. Operating part; 41. Positioning column; 42. Connecting column; 43. Toggle switch; 50. Elastic buckle; 51. Housing; 52. Steel ball; 53. Spring; 60. Cover plate; 61. Avoidance groove. DETAILED DESCRIPTION

[0025] Below, the present invention is further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, under the premise of no conflict, the various embodiments described below or the various technical features can be arbitrarily combined to form a new embodiment. Unless otherwise specified, the materials and equipment used in this embodiment can be purchased from the market. Examples of the embodiments are shown in the accompanying drawings, in which the same or similar numbers throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and cannot be understood as limiting this application.

[0026] In the description of this application, it should be understood that the terms "upper," "lower," "front," "back," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended only to facilitate the description of this application and simplify the description. They do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting this application. In the description of this application, "plurality" means two or more, unless otherwise specifically specified.

[0027] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "connected," "connected," and "connected" should be understood in a broad sense. For example, they may refer to a fixed connection, a connection through an intermediary medium, internal communication between two components, or an interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0028] like Figure 1 、 2 , 3, 4, and 5 show a locking mechanism for a seat roller of the present invention, which includes a mounting frame 10, a roller 20, a locking block 30, and an operating member 40. The mounting frame 10 is located at the bottom of the seat, which can be mounted on the base or leg of the seat, or the mounting frame 10 is a part of the base or leg of the seat. The roller 20 is pivotally connected to the mounting frame 10 for driving the mounting frame 10 to move when rolling. The roller 20 is provided with a plurality of engaging grooves 21 arranged around its central axis. The mounting frame 10 is provided with a slide groove 15 extending up and down, and the side wall of the slide groove 15 is provided with two engaging grooves 16 arranged in the height direction; the locking block 30 is slidably embedded in the slide groove 15, so that the locking block 30 has the freedom to move in the up and down direction relative to the mounting frame 10, and an elastic buckle 50 and a latch 31 are provided on the locking block 30. The elastic buckle 50 can move up and down in the slide groove 15 with the locking block 30. When the locking block 30 moves upward to the elastic buckle 5 When the locking block 30 is in the lower position, the latch 31 is inserted into one of the engaging grooves 21, and the latch 31 cooperates with the engaging groove 21 to limit the rotational freedom of the roller 20 relative to the mounting frame 10. When the locking block 30 is in the higher position, the latch 31 moves upward away from the roller 20, that is, the latch 31 is disengaged from the engaging groove 21. At this time, the latch 31 no longer limits the rotational freedom of the roller 20 relative to the mounting frame 10; the operating member 40 is used to drive the locking block 30 to move up and down inside the slide groove 15.

[0029] When the seat needs to be moved, the user can toggle the operating member 40 to drive the locking block 30 to move upward, the elastic buckle 50 engages with the upper locking slot 16, and at the same time the pin 31 disengages from the locking slot 21, the roller 20 is in the unlocked state, the seat is moved, and the roller 20 rolls. When the seat is moved into place, the user toggles the operating member 40 to drive the locking block 30 to move downward, the elastic buckle 50 contracts and moves downward to a position engaged with the lower locking slot 16, and at the same time the pin 31 moves downward and is inserted into one of the locking slots 21, and the freedom of rotation of the roller 20 relative to the mounting frame 10 is locked by cooperating with the locking slot 21. In the present invention, the locking block 30 is driven to move by the operating member 40, so that the pin 31 on the locking block 30 is inserted into the engaging groove 21 on the roller 20, or the pin 31 is disengaged from the engaging groove 21 on the roller 20, thereby realizing locking or unlocking the rotational freedom of the roller 20 by the locking block 30, and the position of the locking block 30 in the locked state and the unlocked state is locked by the elastic buckle 50 on the locking block 30 and the two engaging grooves 16 on the side wall of the slide groove 15, thereby preventing the locking block 30 from moving when the seat is in use and affecting the normal use of the seat. The overall structure is simple, and the locking and unlocking operations can be realized by only turning the operating member 40, which has better operation convenience.

[0030] In a preferred embodiment, two opposing connecting ears 11 are provided on the mounting frame 10, and a top wall 13 is formed between the tops of the two connecting ears 11, so that the two connecting ears 11 and the top wall 13 enclose a receiving space 12 with front and back openings and a bottom opening. The roller 20 is placed in the receiving space 12, and an axial hole 201 is provided in the middle of the roller 20, and axial holes 111 are provided in the two connecting ears 11. A rotating shaft passes through the axial holes 111 of the two connecting ears 11 and the axial hole 201 of the roller 20, pivotally connecting the roller 20 to the two connecting ears 11. A through hole 131 is provided on the top wall 13, through which the bottom of the slide groove 15 is connected to the accommodating space 12. The latch 31 on the locking block 30 extends downward from the bottom surface of the locking block 30, so that the latch 31 slides through the through hole 131. When the locking block 30 moves downward to the locked state, the lower end of the latch 31 passes through the through hole 131 and protrudes downward from the top wall 13, so that the portion of the latch 31 protruding from the top wall 13 can be engaged with the engaging groove 21 on the roller 20. In addition, the through hole 131 can also provide a guide for the latch 31 to prevent the latch 31 from swinging.

[0031] The top of the slide groove 15 extends to the top surface of the mounting frame 10 to form an opening, and the locking block 30 can be embedded downward into the slide groove 15 from the top opening of the slide groove 15. A cover plate 60 is detachably fixed to the outside of the mounting frame 10, and the cover plate 60 covers the top surface and the outside of the end surface of the mounting frame 10. During assembly, the locking block 30 can be inserted into the slide groove 15 from the top opening of the slide groove 15. Then, the cover plate 60 is fixed to the mounting frame 10 by screw connection or card connection. The cover plate 60 covers the top opening of the slide groove 15 to prevent the locking block 30 from detaching from the top of the slide groove 15. In addition, arranging the cover plate 60 on the mounting frame 10 can facilitate the installation of the locking block 30 and facilitate the forming of the slide groove 15 and the positioning groove 16 on the inner wall of the slide groove 15 on the mounting frame 10.

[0032] A guide groove 14 extending up and down is provided on the end surface of the mounting frame 10, and a through groove 141 connected to the slide groove 15 is provided on the bottom surface of the guide groove 14. An avoidance groove 61 is provided on the cover plate 60. The operating member 40 is placed on the outer side of the end surface of the mounting frame 10, and the operating member 40 is slidably embedded in the guide groove 14. The operating member 40 can move up and down in the guide groove 14. One end of the operating member 40 passes through the through groove 141 and is fixedly connected to the lock block 30. The other end of the operating member 40 passes through the avoidance groove 61 and protrudes out of the outer side of the cover plate 60. A toggle switch 43 located on the outer side of the cover plate 60 is fixedly connected to the other end of the operating member 40. By toggling the toggle switch 43 up and down, the operating member 40 is driven to move up and down, which can drive the lock block 30 to move up and down. The operating member 40 may be configured as a Z-shaped structure, with a positioning post 41 formed at one end. A positioning slot 32 is provided on the side of the locking block 30. The positioning post 41 on the operating member 40 passes through the through slot 141 and is inserted into the positioning slot 32. The positioning post 41 and the locking block 30 are fixed together by screws. During assembly, the locking block 30 is inserted downward into the slide groove 15, and the positioning slot 32 on the locking block 30 is aligned with the through slot 141. Then, the operating member 40 is placed on the outer side of the end surface of the mounting frame 10, and the positioning post 41 is aligned with the through slot 141 and then passed through the through slot 141 and inserted into the positioning slot 32. Finally, the screw passes through the positioning post 41 from the outside and is screwed onto the locking block 30. A connecting post 42 extending outward is provided at the other end of the operating member 40. The connecting post 42 passes through the avoidance slot 61 and is fixedly connected to the toggle switch 43.

[0033] In order to enable the locking block 30 to be stably maintained in the locked position and the unlocked position, two locking grooves 16 arranged vertically are provided on the two opposite side walls of the slide 15, and two elastic buckles 50 are installed on the locking block 30. The two elastic buckles 50 are respectively opposite to the two opposite side walls of the slide 15, so that the two elastic buckles 50 are respectively matched with the locking grooves 16 on the two opposite side walls of the slide 15.

[0034] The above-mentioned elastic buckle 50 includes a shell 51, a spring 53, and a steel ball 52. One end of the shell 51 is open, and the spring 53 is located inside the shell 51. The steel ball 52 is arranged at the opening of the shell 51. The spring 53 is used to provide an elastic stress to push the steel ball 52 toward the outside of the opening of the shell 51. A mounting hole 33 is provided on the lock block 30, and the shell 51 is fixed in the mounting hole 33 so that a part of the steel ball 52 protrudes from the surface of the lock block 30. Under the action of the elastic stress of the spring 53, the part of the steel ball 52 protruding from the surface of the lock block 30 can be embedded in the locking groove 16. When the operating member 40 drives the lock block 30 to move up and down, the steel ball 52 is squeezed by the side of the locking groove 16, so that the steel ball 52 can compress the spring 53 and move toward the inside of the shell 51, that is, when the lock block 30 is subjected to external forces in the up and down directions, it can move up and down in the slide groove 15.

[0035] In order to ensure that the latch 31 can be accurately inserted into the engaging groove 21 , the latch 31 is configured to have a width that gradually decreases from top to bottom, and the width of the engaging groove 21 gradually decreases from the edge of the roller 20 toward the center of the roller 20 .

[0036] The seat of the present invention includes the locking mechanism of the seat rollers described above. Other structures of the seat are the same as those in the prior art and will not be described in detail here.

[0037] Finally, it should be noted that the above-mentioned implementation mode is only an optional embodiment of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and replacements made by technicians in this field on the basis of the present invention fall within the scope of protection required by the present invention.

Claims

1. The locking mechanism of the seat roller is characterized by: Including mounting frame, roller, locking block and operating parts; The roller is pivotally connected to the mounting frame, and a plurality of engaging grooves arranged around the central axis of the roller are provided on the mounting frame; a slide groove extending up and down is provided on the mounting frame, and two engaging grooves arranged in the height direction are provided on the side wall of the slide groove; The locking block is slidably embedded in the slide groove. The locking block is provided with an elastic buckle and a latch. The elastic buckle can move up and down in the slide groove along with the locking block so that the elastic buckle can be respectively engaged with the two clamping grooves; when the elastic buckle is engaged with the lower clamping groove, the latch is inserted into one of the clamping grooves; when the elastic buckle is engaged with the upper clamping groove, the latch is disengaged from the clamping groove; The operating member is used to drive the locking block to move up and down in the sliding groove.

2. The locking mechanism of the seat roller according to claim 1, wherein: Two opposing connecting ears are provided on the mounting frame. The tops of the two connecting ears form a top wall. The two connecting ears and the top wall enclose an accommodating space. The roller is placed in the accommodating space and pivotally cooperates with the two connecting ears through a rotating shaft.

3. The locking mechanism of the seat roller according to claim 2, wherein: The slide groove extends in the up-down direction, and a through hole is provided on the top wall to connect the bottom of the slide groove with the accommodating space. The latch extends downward from the bottom surface of the locking block so that the latch is slidably connected in the through hole.

4. The locking mechanism of the seat roller according to claim 3, wherein: The top of the slide extends to the top surface of the mounting frame to form an opening, and the locking block is embedded in the slide from the top opening of the slide. A cover is detachably fixed to the outside of the mounting frame, and the cover seals the top surface of the mounting frame and the outside of the end surface.

5. The locking mechanism of the seat roller according to claim 4, characterized in that: A guide groove extending up and down is provided on the end surface of the mounting frame, a through groove connected to the slide groove is provided on the bottom surface of the guide groove, and an avoidance groove is provided on the cover plate. The operating member is slidably embedded in the guide groove, one end of the operating member passes through the through groove and is fixedly connected to the locking block, and the other end passes through the avoidance groove and protrudes from the outside of the cover plate, and a toggle switch placed on the outside of the cover plate is fixedly connected to the other end of the operating member.

6. The locking mechanism of the seat roller according to claim 5, characterized in that: A positioning groove is provided on the side of the locking block, and one end of the operating member is provided with a positioning column which passes through the through groove and is inserted into the positioning groove. The positioning column and the locking block are fixed together by screws.

7. The locking mechanism of the seat roller according to claim 1, wherein: Two clamping grooves arranged up and down are provided on the two opposite side walls of the sliding groove, and two elastic buckles respectively facing the two opposite side walls of the sliding groove are installed on the locking block.

8. The locking mechanism of the seat roller according to claim 1 or 7, characterized in that: The elastic buckle includes a shell with an opening at one end, a spring located inside the shell, and a steel ball located at the shell opening. The spring is used to provide an elastic stress to push the steel ball toward the outside of the opening of the shell. A mounting hole is provided on the lock block, and the shell is fixed in the mounting hole so that a part of the steel ball protrudes from the surface of the lock block and then embeds into the locking groove.

9. The locking mechanism of the seat roller according to claim 1, wherein: The width of the latch gradually decreases from top to bottom, and the width of the engaging groove gradually decreases from the edge of the roller toward the center of the roller.

10. A seat, characterized in that A locking mechanism for a seat roller comprising the seat roller according to any one of claims 1 to 9.

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