Gear adjusting mechanism and seat with same

Abstract

The utility model discloses a gear adjusting mechanism which comprises a gear adjusting body, a gear clamping body and an outer sleeve body. A containing cavity extending in the length direction of the outer sleeve body is formed in the outer sleeve body, an avoiding through groove extending in the length direction of the outer sleeve body is formed in the first side cavity wall of the containing cavity, and the avoiding through groove communicates with the containing cavity; the gear shifting body is located in the containing cavity and provided with a plurality of gear structures arranged in the length direction of the gear shifting body at intervals. The blocking body is arranged in the avoiding through groove in a penetrating mode, the first end of the blocking body is located outside the outer sleeve body, the second end of the blocking body is located in the containing cavity, and a blocking structure clamped with the gear structure is arranged at the second end of the blocking body. According to the gear adjusting mechanism, the positions, used for being clamped with the gear shifting body, of the gear shifting body and the gear clamping body are hidden through the outer sleeve body, and therefore the risk of finger clamping is avoided. In addition, the utility model further discloses a folding chair with the gear adjusting mechanism.

Description

Technical Field

[0001] The utility model relates to a piece of furniture, in particular to a gear adjusting mechanism and a seat with the mechanism. Background Art

[0002] As is well known, seats can be seen everywhere in different scenarios such as courtyards, indoors, balconies, and outdoor camping.

[0003] Among them, for a seat, in order to obtain a better sitting angle, the use of a gear adjusting device is indispensable, so as to change the included angle between the seat part and the backrest in the seat through the adjustment of the gear adjusting device.

[0004] However, in the existing gear adjusting devices, they are arranged in an exposed manner on the seat; precisely because the gear adjusting devices are arranged in an exposed manner, during the adjustment process of the operator to the gear adjusting devices, there is a risk of finger pinching for the gear adjusting devices.

[0005] Therefore, there is an urgent need for a gear adjusting mechanism and a seat with the mechanism to overcome the above defects. Summary of the Utility Model

[0006] An object of the utility model is to provide a gear adjusting mechanism that avoids finger pinching.

[0007] Another object of the utility model is to provide a seat that avoids finger pinching.

[0008] To achieve the above object, the gear adjusting mechanism of the utility model includes a gear adjusting body, a gear locking body, and an outer casing. An accommodation cavity extending along the length direction of the outer casing is formed on the outer casing. An avoidance through groove extending along the length direction of the outer casing is formed on the first side cavity wall of the accommodation cavity, and the avoidance through groove is communicated with the accommodation cavity. The gear adjusting body and the gear locking body can move relatively. The gear adjusting body is located in the accommodation cavity, and a plurality of gear structures arranged at intervals along the length direction of the gear adjusting body are provided on the gear adjusting body. A gear locking structure engaged with the gear structure is provided on the gear locking body, and the gear locking structure can be engaged with different gear structures during the relative movement of the gear locking body with respect to the gear adjusting body; the gear locking body passes through the avoidance through groove, the first end of the gear locking body is located outside the outer casing, the second end of the gear locking body is located in the accommodation cavity, and the gear locking structure is located on the second end of the gear locking body.

[0009] Compared with the prior art, by means of the outer casing, the shifting body and the engaging position of the latching body for engaging with the shifting body (i.e., the latching structure) are hidden, preventing the operator from accidentally contacting the latching structure and the gear position structure during the gear shifting process, thus avoiding the risk of pinching fingers. At the same time, since the outer casing can hide the latching structure of the shifting body and the latching body by means of the accommodating cavity and the avoiding through groove it opens, the structure of the gear shifting mechanism of the present utility model is simplified.

[0010] Preferably, the accommodating cavity also penetrates the outer casing in the length direction of the outer casing, and the avoiding through groove also penetrates the first side cavity wall in the length direction of the outer casing; the groove width of the avoiding through groove is smaller than the cavity width of the accommodating cavity.

[0011] Preferably, the shifting body includes a substrate arranged in a stacked manner with the second side cavity wall of the accommodating cavity, a first side plate and a second side plate connected to the substrate. The first side plate and the second side plate are arranged side by side in a separated manner. The first side plate and the second side plate extend towards the first side cavity wall, and each of the first side plate and the second side plate is provided with the gear position structure; the gear position structures of the first side plate and the second side plate are aligned with each other; the second side cavity wall is arranged opposite to the first side cavity wall.

[0012] Preferably, a plurality of first through holes are arranged on the substrate at intervals in the length direction of the shifting body, and a plurality of second through holes are arranged on the second side cavity wall and are aligned with the first through holes.

[0013] Preferably, the gear position structure is an engaging groove, and the latching structure is a latching tooth; the shifting body is provided with a first inclined surface and a second inclined surface arranged at intervals in the length direction of the shifting body. The first inclined surface and the second inclined surface approach each other towards the direction close to the first side cavity wall. The first inclined surface is connected to the outer side wall surface of one engaging groove at the outermost position, and the second inclined surface is connected to the outer side wall surface of another engaging groove at the outermost position.

[0014] Preferably, the first inclined surface and the second inclined surface are arranged in an inverted "V" shape.

[0015] Preferably, a convex structure is further provided on the second end of the latching body, and the convex structure is arranged at a distance from the latching structure in the length direction of the shifting body.

[0016] To achieve the above object, the seat of the present utility model includes the aforementioned gear shifting mechanism.

[0017] Preferably, the seat of the present utility model further includes a front foot, a rear foot, a seat frame, a backrest frame, armrests and a connecting rod. The first end of the blocking body is fixed to the upper end of the front foot. The upper end of the rear foot is hinged to the first end of the blocking body. The front end of the seat frame is hinged to the position of the front foot away from the blocking body. The rear end of the seat frame is hinged to one end of the connecting rod. The other end of the connecting rod is hinged to the position of the rear foot away from the blocking body. The lower end of the backrest frame is hinged to the rear end of the seat frame. The rear end of the armrest is hinged to the position of the backrest frame away from the seat frame. An installation cavity for embedding and installing the outer sleeve is formed at the front end of the armrest. The outer sleeve is installed in the installation cavity from below. By adjusting the gear adjustment mechanism, the included angle between the backrest frame and the seat frame ranges from 110° to 140°.

[0018] Preferably, the front foot, the rear foot, the seat frame and the backrest frame are all U-shaped frames.

[0019] Compared with the prior art, by means of the outer sleeve, the shifting body and the position where the blocking body engages with the shifting body (i.e., the blocking structure) are hidden, preventing the operator from accidentally contacting the blocking structure and the gear structure during the gear adjustment process, thus avoiding the risk of pinching fingers. At the same time, since the outer sleeve can hide the blocking structure of the shifting body and the blocking body by means of the accommodation cavity and the avoidance through groove formed therein, the structure of the gear adjustment mechanism is simplified. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a perspective view of the seat of the present utility model.

[0021] Figure 2 is Figure 1 a perspective exploded view of the seat shown.

[0022] Figure 3 is Figure 1 a perspective view of the seat shown at another angle.

[0023] Figure 4 is Figure 3 a perspective exploded view of the seat shown.

[0024] Figure 5 is a perspective view of the gear adjustment mechanism of the present utility model.

[0025] Figure 6 is Figure 5 a plan view of the gear adjustment mechanism shown as viewed in the direction indicated by the arrow on the outer sleeve.

[0026] Figure 7 is Figure 5 a perspective exploded view of the gear adjustment mechanism shown.

[0027] Figure 8 is Figure 7 A plan view of hiding the outer casing and viewing in the direction indicated by arrow B.

[0028] Figure 9 A perspective view of the gear shifting body in the gear shifting mechanism of the present utility model.

[0029] Figure 10 A perspective view of the gear locking body in the gear shifting mechanism of the present utility model.

[0030] Figure 11 A perspective view of the outer casing in the gear shifting mechanism of the present utility model.

[0031] Figure 12 A plan view of the seat of the present utility model when viewed from left to right and the angle between the backrest frame and the seat frame is 100 degrees through the gear shifting mechanism.

[0032] Figure 13 A plan view of the seat of the present utility model when viewed from left to right and the angle between the backrest frame and the seat frame is 115 degrees through the gear shifting mechanism.

[0033] Figure 14 A plan view of the seat of the present utility model when viewed from left to right and the angle between the backrest frame and the seat frame is 126 degrees through the gear shifting mechanism.

[0034] Figure 15 A plan view of the seat of the present utility model when viewed from left to right and the angle between the backrest frame and the seat frame is 138 degrees through the gear shifting mechanism. Detailed implementation manners

[0035] In order to elaborate in detail the technical content and structural features of the present utility model, the following further explanations are made in conjunction with the implementation manners and accompanied by the drawings.

[0036] Please refer to Figures 1 to 4, the seat 100 of the present utility model includes a gear adjustment mechanism 10, a front foot 20, a rear foot 30, a seat frame 40, a backrest frame 50, an armrest 60 and a connecting rod 70. The first end 12a of the catch body 12 mentioned below is fixed to the upper end 21 of the front foot 20, and the upper end 21 of the front foot 20 provides a supporting function for the catch body 12 and maintains a relatively stationary relationship with the front foot 20. The upper end 31 of the rear foot 30 is hinged to the first end 12a of the catch body 12 to meet the need for relative rotation between the rear foot 30 and the catch body 12. The front end 41 of the seat frame 40 is hinged to a position of the front foot 20 away from the catch body 12, the rear end 42 of the seat frame 40 is hinged to one end of the connecting rod 70, and the other end of the connecting rod 70 is hinged to a position of the rear foot 30 away from the catch body 12. The lower end of the backrest frame 50 is hinged to the rear end 42 of the seat frame 40. The rear end 61 of the armrest 60 is hinged to a position of the backrest frame 50 away from the seat frame 40, and an installation cavity 63 for embedding and installing the outer sleeve body 13 mentioned below is provided at the front end 62 of the armrest 60, and the outer sleeve body 13 is installed in the installation cavity 63 from below. Therefore, the seat 100 of the present utility model has a folding function, which is convenient for the collection and outdoor carrying of the seat 100 of the present utility model. Specifically, in Figures 1 to 4 , as an example, the front foot 20, the rear foot 30, the seat frame 40 and the backrest frame 50 are all U-shaped frames to simplify their usage quantity. Correspondingly, the armrest 60 and the gear adjustment mechanism 10 are each two arranged in a left-right spaced manner, and the state is shown in Figure 2 ; In addition, in Figure 3 and Figure 4 , as an example, the outer sleeve body 13 is flush with the armrest 60 after being installed in the installation cavity 63 to make the whole seat 100 of the present utility model more beautiful; in addition, by adjusting the gear adjustment mechanism 10, the included angle range between the backrest frame 50 and the seat frame 40 is 110 - 140 degrees. For example, in Figure 12 , the included angle between the backrest frame 50 and the seat frame 40 is 110 degrees, in Figure 13 , the included angle between the backrest frame 50 and the seat frame 40 is 115 degrees, in Figure 14 , the included angle between the backrest frame 50 and the seat frame 40 is 126 degrees, in Figure 15 , the included angle between the backrest frame 50 and the seat frame 40 is 138 degrees.

[0037] Combined with Figure 5 , Figure 6 and Figure 7 shown, as an example, the gear adjustment mechanism 10 includes a gear adjustment body 11, a catch body 12 and an outer sleeve body 13. An accommodation cavity 13a extending along the length direction of the outer sleeve body 13 (as indicated by the double arrow A) is provided on the outer sleeve body 13, and an avoidance through groove 13b extending along the length direction of the outer sleeve body 13 is provided on the first side cavity wall 131 of the accommodation cavity 13a, and the avoidance through groove 13b is communicated with the accommodation cavity 13a; alternatively, inFigure 11 Among them, as an example, the accommodation cavity 13a also penetrates through the outer sleeve 13 in the length direction of the outer sleeve 13, and the avoidance through groove 13b also penetrates through the first side cavity wall 131 in the length direction of the outer sleeve 13. Such a design can reduce the structure of the gear shifting mechanism 10, making it more conducive to embedding the gear shifting mechanism 10 in the armrest 60. Additionally, the width of the avoidance through groove 13b is smaller than the width of the accommodation cavity 13a to ensure that the outer sleeve 13 and the gear shifting body 11 and the outer sleeve 13 and the gear locking body 12 can be made more compact.

[0038] At the same time, the gear shifting body 11 and the gear locking body 12 can move relative to each other. The gear shifting body 11 is located in the accommodation cavity 13a, and four gear structures 111 are arranged at intervals along the length direction of the gear shifting body 11 to meet the need for four-stage adjustment of the seat 100 of the present utility model. Obviously, according to actual needs, the number of the gear structures 111 can also be other values, so it is not limited Figures 7 to 9 as shown.

[0039] Furthermore, the gear locking body 12 is provided with a gear locking structure 121 that engages with the gear structure 111. The gear locking structure 121 can engage with different gear structures 111 during the relative movement of the gear locking body 12 relative to the gear shifting body 11, thereby changing the angle between the seat frame 40 and the backrest frame 50. The state is shown in Figures 12 to 15 as shown. The gear locking body 12 passes through the avoidance through groove 13b. The first end 12a of the gear locking body 12 is located outside the outer sleeve 13 to meet the need for fixedly connecting the first end 12a of the gear locking body 12 to the upper end 21 of the front foot 20. The second end 12b of the gear locking body 12 is located in the accommodation cavity 13a, and the gear locking structure 121 is located on the second end 12b of the gear locking body 12. More specifically, as follows:

[0040] As Figure 5 , Figure 6 , Figure 7 and Figure 9 shown, as an example, the gear shifting body 11 includes a base plate 11a arranged in a stacked manner with the second side cavity wall 132 of the accommodation cavity 13a, and a first side plate 11b and a second side plate 11c connected to the base plate 11a. The first side plate 11b and the second side plate 11c are arranged side by side and separated. The first side plate 11b and the second side plate 11c extend towards the first side cavity wall 131. The state is shown in Figure 5 and Figure 6 shown. Each of the first side plate 11b and the second side plate 11c is provided with a gear structure 111, and the gear structures 111 of the first side plate 11b and the second side plate 11c are aligned with each other. Such a design enables the gear locking structure 121 of the gear locking body 12 to engage with the gear structures 111 on both the first side plate 11b and the second side plate 11c each time, effectively improving the stability of the engagement. Specifically, in Figure 7Among them, as an example, a plurality of first through holes 112 are formed in the substrate 11a and arranged at intervals along the length direction of the gear adjustment body 11. A plurality of second through holes 1321 are formed in the second side cavity wall 132 and aligned with the first through holes 112. By means of the first through holes 112 and the second through holes 1321, and in cooperation with the accommodation cavity 13a and the avoidance through groove 13b, it is convenient for the operator to fix the gear adjustment body 11 and the outer sleeve body 13 embedded in the armrest 60 to the armrest 60 with screws. It should be noted that in Figure 6 , Figure 7 and Figure 11 , the first side cavity wall 131 and the second side cavity wall 132 are arranged opposite to each other.

[0041] As Figure 8 and Figure 9 shown, as an example, the gear position structure 111 is a clamping groove, and the gear engaging structure 112 is a tooth, so as to simplify the structures of both the gear position structure 111 and the gear engaging structure 112. Specifically, in Figure 7 and Figure 9 , as an example, the gear adjustment body 11 is provided with a first inclined surface 113 and a second inclined surface 114 arranged at intervals along the length direction of the gear adjustment body 11; the first inclined surface 113 and the second inclined surface 114 approach each other in the direction close to the first side cavity wall 131; the first inclined surface 113 is connected to the outer side wall surface 111 of a clamping groove at the outermost position (that is, connected to the outer side wall 111 of the left clamping groove in Figure 9 ), and the second inclined surface 114 is connected to the outer side wall surface 111 of another clamping groove at the outermost position (that is, connected to the outer side wall 111 of the right clamping groove in Figure 9 ); by means of the cooperation of the first inclined surface 113 and the second inclined surface 114, it is effectively prevented that the gear engaging structure 112 accidentally slides out of the gear adjustment body 11 during the gear position adjustment process, so as to ensure that the backrest will not easily shift gears and cause the backward sliding of the backrest frame 50. More specifically, in Figure 9 , as an example, the first inclined surface 113 and the second inclined surface 114 are arranged in an inverted "V" shape, and such a design makes Figure 9 the left and right clamping grooves have the same barb structure effect, so as to further ensure that the gears will not easily shift during the gear position adjustment process.

[0042] As Figure 6 , Figure 7 , Figure 8 and Figure 10As shown, as an example, a protruding structure 122 is further provided on the second end 12b of the card retaining body 12. The protruding structure 122 is arranged at a distance from the card retaining structure 111 in the length direction of the shift adjusting body 11. By means of the protruding structure 122, it is effectively ensured that the card retaining structure 121 does not engage with the gear position structure 111 after the seat 100 of the present invention is retracted. It should be noted that when the shift adjusting body 11 includes a base plate 11a, a first side plate 11b, and a second side plate 11c, the protruding structure 122 is located in the space 115 surrounded by the base plate 11a, the first side plate 11b, and the second side plate 11c at this time (see Figure 6 ), and faces the base plate 11a, and the state is shown in Figure 6 ; therefore, when the card retaining structure 121 engages with any gear position structure 111, a gap is formed between the protruding structure 122 and the base plate 11a at this time, and the state is shown in Figure 6 to avoid interference of the protruding structure 122 with the engagement between the card retaining structure 121 and any gear position structure 111.

[0043] Compared with the prior art, by means of the outer casing 13, the shift adjusting body 11 and the position where the card retaining body 12 is engaged with the shift adjusting body 11 (i.e., the card retaining structure 121) are hidden, preventing the operator from accidentally touching the card retaining structure 121 and the gear position structure 111 during the gear adjustment process, thus avoiding the risk of pinching fingers. At the same time, since the outer casing 13 can hide the card retaining structure 121 of the shift adjusting body 11 and the card retaining body 12 by means of the accommodating cavity 13a and the avoiding through groove 13b provided therein, the structure of the gear adjustment mechanism 10 is simplified. Since the seat 100 of the present invention includes the gear adjustment mechanism 10, correspondingly, the seat 100 of the present invention also has the above-mentioned effects.

[0044] It should be noted that the materials of the front legs 20, the rear legs 30, the seat frame 40, the backrest frame 50, and the gear adjustment mechanism 10 mentioned above can be aluminum alloy to improve the strength of the seat 100 of the present invention and also make the seat 100 of the present invention have the advantage of being lightweight; obviously, other materials can be used according to actual needs.

[0045] The above-disclosed are only the preferred examples of the present invention and cannot be used to limit the scope of the rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention all fall within the scope covered by the present invention.

Claims

1. A gear shifting mechanism, comprising a gear shifting body and a gear locking body that can move relative to each other. A plurality of gear structures are arranged at intervals along the length direction of the gear shifting body on the gear shifting body, and a gear locking structure that engages with the gear structure is provided on the gear locking body. The gear locking structure can engage with different gear structures during the process of the gear locking body moving relative to the gear shifting body; characterized in that, The gear shifting mechanism further includes an outer casing, on which there is a receiving cavity extending along the length direction of the outer casing. An avoidance through groove extending along the length direction of the outer casing is provided on the first side wall of the receiving cavity, and the avoidance through groove is communicated with the receiving cavity; the gear shifting body is located in the receiving cavity, the gear locking body is inserted into the avoidance through groove, the first end of the gear locking body is located outside the outer casing, the second end of the gear locking body is located in the receiving cavity, and the gear locking structure is located on the second end of the gear locking body.

2. The gear shifting adjustment mechanism according to claim 1, wherein The receiving cavity also penetrates through the outer casing in the length direction of the outer casing, and the avoidance through groove also penetrates through the first side wall in the length direction of the outer casing; the groove width of the avoidance through groove is smaller than the cavity width of the receiving cavity.

3. The gear shifting adjustment mechanism according to claim 1, wherein The gear shifting body includes a substrate stacked with the second side wall of the receiving cavity, a first side plate and a second side plate connected to the substrate. The first side plate and the second side plate are arranged side by side in a separated manner, the first side plate and the second side plate extend towards the first side wall, and the first side plate and the second side plate are each provided with the gear structure; the gear structures of the first side plate and the second side plate are aligned with each other; the second side wall is arranged opposite to the first side wall.

4. The gear shifting adjusting mechanism according to claim 3, wherein A plurality of first through holes arranged at intervals along the length direction of the gear shifting body are provided on the substrate, and a plurality of second through holes aligned with the first through holes are provided on the second side wall.

5. The gear shifting mechanism according to claim 1, characterized in that, The gear structure is a engaging groove, and the gear locking structure is a gear tooth; on the gear shifting body, there are a first inclined surface and a second inclined surface arranged at intervals along the length direction of the gear shifting body. The first inclined surface and the second inclined surface are close to each other in the direction towards the first side wall. The first inclined surface is in contact with the outer side wall surface of one engaging groove at the outermost position, and the second inclined surface is in contact with the outer side wall surface of the other engaging groove at the outermost position.

6. The gear shifting adjustment mechanism according to claim 5, characterized in that, The first inclined surface and the second inclined surface are arranged in an inverted "eight" shape.

7. The gear shifting adjustment mechanism according to claim 1, characterized in that, A protruding structure is further provided on the second end of the gear locking body, and the protruding structure is arranged at a distance from the gear locking structure in the length direction of the gear shifting body.

8. A seat, characterized in that, The seat includes the gear shifting mechanism according to any one of claims 1 to 7.

9. The seat according to claim 8, characterized in that, It further includes a front foot, a rear foot, a seat frame, a backrest frame, an armrest and a connecting rod. The first end of the gear locking body is fixed to the upper end of the front foot, the upper end of the rear foot is hinged to the first end of the gear locking body, the front end of the seat frame is hinged to the position of the front foot away from the gear locking body, the rear end of the seat frame is hinged to one end of the connecting rod, the other end of the connecting rod is hinged to the position of the rear foot away from the gear locking body, the lower end of the backrest frame is hinged to the rear end of the seat frame, the rear end of the armrest is hinged to the position of the backrest frame away from the seat frame, and an embedding cavity for embedding and installing the outer casing is provided at the front end of the armrest. The outer casing is installed in the embedding cavity from below; by adjusting the gear shifting mechanism, the included angle range between the backrest frame and the seat frame is 110 - 140 degrees.

10. The seat according to claim 9, characterized in that, The front foot, the rear foot, the seat frame and the backrest frame are all U-shaped frames.

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