CN202152063U - Seat mechanism and child tricycle provided with same - Google Patents

Abstract

Disclosed are a seat mechanism and a child tricycle provided with the seat mechanism. The seat mechanism comprises a base frame and a seat arranged above the base frame, the seat and the base frame are connected rotationally by the aid of a first rotary shaft, a seat locking mechanism provided with a locking position and an unlocking position is arranged between the seat and the base frame, the seat is provided with a forward position and a backward position, and the seat mechanism further comprises an operating rod capable of controlling the seat locking mechanism to be switched between the locking position and the unlocking position after rotating. The lower portion of the operating rod is rotationally connected with the seat by the aid of a second rotary shaft, the second rotary shaft and the first rotary shaft are dimensionally perpendicular to each other, and an operating rod locking mechanism capable of leading the seat locking mechanism to be at the locking position stably is arranged between the operating rod and the seat. After the operating rod locking mechanism is unlocked, the operating rod rotates so that the seat locking mechanism can be switched to the unlocking position from the locking position and the seat can rotate relative to the base frame.

Description

Seat mechanism and children's tricycle with the seat mechanism

technical field

The utility model relates to a seat mechanism and a children's tricycle with the seat mechanism.

Background technique

The seat mechanism in the prior art includes a pedestal, a seat arranged on the pedestal, the seat is located above the pedestal, and the seat and the pedestal pass through a first rotating shaft Rotately connected, the axis line of the first rotating shaft extends along the up and down direction, the seat has a forward position facing forward and a backward position facing backward, the seat and the base frame A seat locking mechanism with a locked position and an unlocked position is arranged between them. The seat locking mechanism is usually a locking handle with a deadbolt that slides along the direction perpendicular to the first rotating shaft at the bottom of the seat, and two opposite lock grooves are opened on the base frame, and the deadbolt is inserted into the corresponding lock when locking. In the groove, between the locking handle and the bottom of the seat, a locking elastic member is arranged so that the deadbolt can be stably inserted in the locking groove. Pulling the locking handle unlocks the seat locking mechanism, transitioning the seat between the forward and rearward positions.

Utility model content

A technical problem to be solved by the utility model is to provide a seat mechanism.

In order to solve the above technical problems, a technical solution adopted by the utility model is: a seat mechanism, including a base frame, a seat arranged on the base frame, the seat is located above the base frame, The seat and the base frame are rotatably connected through a first rotating shaft, the axis line of the first rotating shaft extends along the up and down direction, and there is a device between the seat and the base frame a seat locking mechanism in a locked position and an unlocked position, said seat having a forward position facing forward and a rearward position facing backward,

The seat mechanism also includes a joystick that can control the transition of the seat locking mechanism between the locked position and the unlocked position after rotation, and the lower part of the joystick is rotationally connected with the seat through a second rotating shaft , the second axis of rotation is perpendicular to the space of the first axis of rotation,

A joystick locking mechanism is arranged between the joystick and the seat so that the seat locking mechanism is stably in a locked position.

In some embodiments, the seat locking mechanism includes a locking member slidably arranged on the lower part of the seat along the axial direction of the first rotating shaft, and a second locking element set on the base frame. A lock slot and a second lock slot, the locking member has a first lock tongue protruding downward, when the seat locking mechanism is in the locked position, the first lock tongue is inserted into the In the first lock slot or the second lock slot, when the seat locking mechanism is in the unlocked position, the first lock tongue is disengaged from the first lock slot or the second lock slot.

In some further embodiments, the lower part of the joystick and the locking piece are provided with a control mechanism for controlling the sliding of the locking piece relative to the seat.

In some still further embodiments, the control mechanism includes a groove opened on the upper part of the locking member, a guide pin fixed on the lower part of the joystick, and the guide pin is located on the Below the second rotating shaft, when the seat locking mechanism is in the unlocked position, the guide pin is located at the deepest part of the groove, and when the seat locking mechanism is in the locked position, the guide pin Breaking away from the deepest part of the groove, a first elastic member is provided between the seat and the locking member to make the seat locking mechanism stably in the unlocked position.

In certain further embodiments, the upper part of the locking member is also provided with a first depression and a second depression, the first depression is located above one side of the groove, and the second depression is Located above the other side of the groove, when the seat is in the forward position, the guide pin is inserted into the first depression, when the seat is in the backward position, the The guide pin is inserted into the second recess.

In some still further embodiments, the groove is V-shaped.

In some embodiments, the joystick locking mechanism includes a first positioning member that is slidably arranged on the joystick along a direction perpendicular to the extension direction of the second rotating shaft, and is set on the The first positioning groove and the second positioning groove on the seat, the first positioning groove and the second positioning groove are respectively located on both sides of the first rotating shaft, when the seat is in the forward position Next, the first positioning piece is inserted into the first positioning slot, and when the seat is in the rearward position, the first positioning piece is inserted into the second positioning slot.

In some further embodiments, a limiting mechanism for limiting the sliding range of the first positioning member is provided between the first positioning member and the joystick.

In some still further embodiments, the upper part of the joystick is provided with a traction cable control mechanism for controlling the movement of the first positioning member, and the traction cable control mechanism is connected with the first positioning component A traction cable is connected between them, and a device is provided between the first positioning member and the operating lever so that the first positioning member can be stably inserted into the first positioning hole or the second positioning hole. The second elastic piece in the hole.

Another technical problem to be solved by the utility model is to provide a children's tricycle.

In order to solve the above technical problems, a technical solution adopted by the utility model is: a children's tricycle including the seat mechanism described in any one of the above technical solutions, the children's tricycle also includes a front fork, which is arranged on the front The front wheel at the lower part of the fork, the handlebar used to control the steering of the front wheel, the rear bracket that is rotatably connected to the front fork at the front, and two groups are respectively arranged on the two rear parts of the rear bracket. The rear wheel on the side, the base frame is fixed on the rear support frame.

The scope of the present utility model is not limited to technical solutions formed by a specific combination of the above technical features, but also covers other technical solutions formed by any combination of the above technical features or equivalent features. For example, a technical solution formed by replacing the above-mentioned features with (but not limited to) technical features with similar functions disclosed in this application.

Due to the application of the above-mentioned technical solutions, the utility model has the following advantages compared with the prior art: after the joystick locking mechanism is unlocked, the joystick is rotated so that the seat locking mechanism is converted from the locked position to the unlocked position, and then the seat can be rotated relative to the base frame .

Description of drawings

Accompanying drawing 1 is the perspective view of the utility model (the seat is positioned at forward position);

Accompanying drawing 2 is the perspective view of the utility model (the joystick locking mechanism is located in the unlocked position);

Accompanying drawing 3 is the perspective view of the utility model (the seat is positioned at the backward position);

Accompanying drawing 4 is a partial exploded view of the joint between the seat and the base frame;

Figure 5 is a partial cross-sectional view of the connection between the seat and the base frame (the joystick locking mechanism is in the locked position);

Figure 6 is a partial cross-sectional view of the connection between the seat and the base frame (the joystick locking mechanism is in the unlocked position);

Accompanying drawing 7 is the front view of the utility model (the seat is positioned at the forward position);

Accompanying drawing 8 is the front view of the utility model (the joystick locking mechanism is in the unlocked position);

Accompanying drawing 9 is the front view of the present utility model (seat is positioned at backward position).

Among them: 1. Front fork; 3. Front wheel; 4. Handlebar; 5. Rear support frame; 6. Rear wheel; 7. Seat; 8. Joystick; ; 11, the second positioning groove; 12, the locking piece; 13, the first slope; 14, the second slope; 15, the guide pin; 16, the first elastic member; 17, the chute; 18, the handle; Cable; 20, base frame; 21, the first rotating shaft; 22, the second rotating shaft; 23, the first dead bolt; 24, the second dead bolt; 25, the first lock groove; 26, the second lock groove; 27, the first lock tongue One depression; 28, the second depression.

Detailed ways

The seat mechanism can be a seat mechanism used on a baby stroller, a seat mechanism used on a dining chair, or a seat mechanism used on a children's tricycle as in this implementation. As shown in accompanying drawing 1-accompanying drawing 3, accompanying drawing 7-accompanying drawing 9. A children's tricycle, comprising a front fork 1, a front wheel 3 arranged at the bottom of the front fork 1, a handlebar 4 for controlling the steering of the front wheel 3, a rear bracket 5 which is rotatably connected to the front fork 1, and arranged on the The two groups of rear wheels 6 at the rear brace 5 rear portion, and the seat mechanism are arranged on the rear brace 5 .

As shown in the accompanying drawings, the above-mentioned seat mechanism includes a base frame 20, a seat 7 arranged on the base frame 20, the seat is located above the base frame 20, and the base frame 20 is fixedly connected with the rear support frame 5 to form a whole.

The seat 7 and the base frame 20 are rotatably connected through the first rotating shaft 21, the axis of the first rotating shaft 21 extends along the up and down direction, and a seat locking mechanism with a locking position and an unlocking position is arranged between the seat 7 and the base frame 20 , the seat 7 has a forward position facing forward and a rearward position facing backward.

The seat mechanism also includes a joystick 8 that can control the transition between the locked position and the unlocked position of the seat locking mechanism after rotation, that is, in this embodiment, the unlocking of the seat locking mechanism is realized by rotating the joystick 8 . In a children's tricycle, this joystick 8 also becomes a push rod. As shown in accompanying drawings 4-6, the lower part of the joystick 8 is rotationally connected with the seat 7 through the second rotating shaft 22, and the second rotating shaft 22 is perpendicular to the first rotating shaft 21 in space.

A joystick locking mechanism is provided between the joystick 8 and the seat 7 so that the seat locking mechanism is stably in a locked position. The joystick 8 can only be turned after the joystick locking mechanism is unlocked.

As shown in accompanying drawings 4-6, the joystick locking mechanism includes a first positioning member 9 slidably arranged on the joystick 8 along a space perpendicular to the direction of the second rotating shaft 22, and a first positioning member 9 set on the seat 7. The positioning groove 10 and the second positioning groove 11, the first positioning groove 10 and the second positioning groove 11 are respectively symmetrically located on both sides of the first rotating shaft 21, when the seat 7 is in the forward position, the first positioning member 9 is inserted in the In the first positioning groove 10, the joystick locking mechanism is in the locking position; when the seat 7 is in the backward position, the first positioning member 9 is inserted in the second positioning groove 11 so that the joystick locking mechanism is in the locking position, when the first positioning When the piece 9 is disengaged from the first positioning groove 10 and the second positioning groove 11, the joystick locking mechanism is in the unlocked position. The joystick locking mechanism can also be provided with a first tooth groove at the bottom of the joystick 8, a second tooth groove is provided on the seat 7, and a tooth block is slidably arranged between the first tooth groove and the second tooth groove. The axis lines of the two rotating shafts pass through the center of the first tooth slot, the second tooth slot and the tooth block. When locking, the tooth blocks are respectively inserted into the first tooth slot and the second tooth slot so that the joystick locking mechanism is in the locked position.

As shown in accompanying drawings 5 to 6 , a limiting mechanism for limiting the sliding range of the first positioning member 9 is provided between the first positioning member 9 and the joystick 8 . The limit mechanism includes a sliding slot 17 opened on the first positioning member 9 , and the guide pin 15 is slidably inserted in the sliding slot 17 .

The upper part of the joystick 8 is provided with a traction cable control mechanism for controlling the movement of the first positioning member 9, and a traction cable 19 is connected between the traction cable control mechanism and the first positioning component 9, and between the first positioning component 9 and the control lever 8 A second elastic member is provided to enable the first positioning member 9 to be stably inserted into the first positioning hole 10 or the second positioning hole 11 . The operator does not have to bend down, that is, he can stand and remotely control the first positioning member 9 so that the joystick locking mechanism is unlocked.

The concrete structure of the traction rope control mechanism is not the inventive point of the present utility model, as long as it can drive the traction rope 19 to make it move, it can be used here. Usually, a rotary handle 18 rotatably arranged on the joystick is used, and the rotary handle 18 is connected with one end of the traction cable 19 , and the other end of the traction cable 19 is connected with the first positioning member 9 .

As shown in accompanying drawings 4 to 6, the seat locking mechanism includes a locking member 12 slidably arranged on the lower part of the seat 7 along the axial direction of the first rotating shaft 21, and a first locking groove 25 opened on the base frame 20. With the second lock groove 26, the locking member 12 has a first lock tongue 23 and a second lock tongue 24 protruding downward. When the seat locking mechanism is in the locked position, the first lock tongue 23 is inserted into the first lock groove 25 , the second lock tongue 24 is inserted in the second lock groove 26, or the first lock tongue 23 is inserted in the second lock groove 26, and the second lock tongue 24 is inserted in the first lock groove 25; In the position, the first lock tongue 23 and the second lock tongue 24 are disengaged from the first lock groove 25 and the second lock groove 26 respectively.

As shown in accompanying drawings 4-6, the lower part of the joystick 8 and the locking member 12 are provided with a control mechanism for controlling the sliding of the locking member 12 relative to the seat 7 . The control mechanism includes a groove provided on the upper part of the locking member 12 and a guide pin 15 fixed on the lower part of the joystick 8 . The groove is V-shaped, the guide pin 15 is located below the second rotating shaft 22, and the first elastic member 16 is arranged between the seat 7 and the locking member 12 to make the seat locking mechanism stably in the unlocked position. When the seat locking mechanism is in the unlocked position, the guide pin 15 is located at the deepest part of the groove, and the first elastic member 16 pushes the locking member 12 upwards, so that the first locking tongue 23 and the second locking tongue 24 can be stably disengaged from the first locking tongue 24 respectively. Lock groove 25 and second lock groove 26; when the seat locking mechanism is in the locked position, the guide pin breaks away from the deepest part of the groove, so that the guide pin 15 overcomes the elastic force of the first elastic member 16, and the lock member 12 is pressed downward. When the first lock tongue 23 and the second lock tongue 24 are respectively inserted into the first lock groove 25 and the second lock groove 26 . The first elastic member 16 is a compression spring. When the seat locking mechanism is converted from the unlocked position to the locked position, if the first dead bolt 23 and the second dead bolt 24 are not aligned with the corresponding first lock groove 25 and the second lock Groove 26, now the first elastic member 16 is in a further compressed state, the seat 7 can be rotated around the first rotating shaft 21, when the first lock tongue 23 and the second lock tongue 24 are aligned with the corresponding first lock groove 25 and the second lock tongue respectively Just can insert when two locking grooves 26.

The two side walls of the groove have a first slope 13 and a second slope 14, and the guide pin 15 is in conflict with the first slope 13 or the second slope 14 when the seat 7 is converted from a forward position to a rearward position.

The upper part of the locking member 12 is also provided with a first recess 27 and a second recess 28, the first recess 27 is located above one side of the groove, and the second recess 28 is located above the other side of the recess, when the seat 7 is in the forward position Next, when the seat locking mechanism is in the locked position, the guide pin 15 is located in the first recess 27 , and when the seat 7 is in the rearward position, the guide pin 15 is located in the second recess 28 .

Operation process:

Convert the seat 7 from the forward position to the backward position: when the seat 7 is in the forward position, as shown in accompanying drawing 1, accompanying drawing 5 and accompanying drawing 7, overcome the described first positioning member 9 and the described The elastic force of the second elastic member between the joystick 8 operates the knob 18 on the joystick 8, and under the action of the traction rope 19, the first positioning member 9 is driven to move upward so as to break away from the first positioning hole 10, and then the joystick 8. Rotate around the second rotating shaft 22. During the rotation, the positioning pin 15 breaks away from the first recess 27 and slides along the first slope 13 in the groove. When the positioning pin 15 slides to the bottom of the groove, the first locking tongue 23 Under the action of the first elastic member 16, it is disengaged from the first lock groove 25, and the seat 7 can be rotated around the first rotation axis relative to the base frame 20, and the seat 7 can be turned to the backward position, and the user can rotate the joystick 8 around the The second rotating shaft 22 rotates backwards. At this time, the positioning pin 15 slides in the second depression 28 along the second slope 14 from the bottom of the groove, that is, the seat locking mechanism locks the seat 7 in the backward position, and releases the knob 18. , the first positioning member 9 is inserted into the second positioning hole 11 .

The seat 7 is converted to the forward position by the backward position, and the operation is also the same.

Regarding the orientation words such as front, back, up and down mentioned above, usually the position of the push rod is behind. In this embodiment, the joystick 8 is the push rod. As shown in Figure 7, when the backrest of the seat 7 and the push rod Being on the same side means that the seat is forward, and as shown in Figure 9, when the backrest of the seat 7 and the push rod are on opposite sides, the seat is backward.

As mentioned above, we have fully described according to the purpose of the utility model, but the utility model is not limited to the above-mentioned embodiment and implementation method. Practitioners in the relevant technical fields can make different changes and implementations within the scope permitted by the technical ideas of the present utility model.

Claims (10)

1. seat mechanism; Comprise pedestal (20), be arranged on the seat (7) on the described pedestal (20); Described seat is positioned at the top of described pedestal (20); Described seat (7) is connected through first rotating shaft (21) with described pedestal (20) rotatedly, and the axial line of described first rotating shaft (21) extends along above-below direction, and described seat (7) have forward facing position and backwards position backward forward; Be provided with seat lockout mechanism between described seat (7) and the described pedestal (20), it is characterized in that with latched position and unlocked position:

After also comprising rotation, described seat mechanism can control the joystick (8) that described seat lockout mechanism is changed between latched position and unlocked position; The bottom of described joystick (8) is connected with described seat (7) through second rotating shaft (22) rotatedly; Described second rotating shaft (22) is vertical with described first rotating shaft (21) phase space

Be provided with between described joystick (8) and described seat (7) and make described seat locking mechanism stable ground be in the lever locked mechanism under the latched position.

2. seat according to claim 1 mechanism; It is characterized in that: described seat lockout mechanism comprise along the direction of axis line of described first rotating shaft (21) be slidingly arranged in bottom, described seat (7) locking piece (12), be opened in first locked groove (25) and second locked groove (26) on the described pedestal (20); Has first dead bolt (23) that stretches out on the described locking piece (12) downwards; Lockout mechanism is positioned under the latched position when described seat; Described first dead bolt (23) is inserted in described first locked groove (25) or second locked groove (26); Lockout mechanism is positioned under the unlocked position when described seat, and described first dead bolt (23) is separated with described first locked groove (25) or described second locked groove (26).

3. seat according to claim 2 mechanism is characterized in that: the bottom of described joystick (8) and described locking piece (12) are provided with and are used to control the control mechanism that the described relatively seat of described locking piece (12) (7) slides.

4. seat according to claim 3 mechanism; It is characterized in that: described control mechanism comprise the top that is opened in described locking piece (12) groove, be fixed on the guide finger (15) of the bottom of described joystick (8); Described guide finger (15) is positioned at the below of described second rotating shaft (22); Lockout mechanism is in the unlocked position down when described seat; Described guide finger (15) is positioned at the innermost of described groove; Lockout mechanism is under the latched position when described seat, and described guide finger breaks away from the innermost of described groove, is provided with between described seat (7) and the described locking piece (12) to make described seat locking mechanism stable ground be in first elastic component (16) under the unlocked position.

5. seat according to claim 4 mechanism; It is characterized in that: the top of described locking piece (12) also offers first depression (27) and second depression (28); Described first depression (27) is positioned at the top of described groove one side; Described second depression (28) is positioned at the top of described groove opposite side, and when described seat (7) are under the front position, described guide finger (15) is inserted in described first depression (27); Under described seat (7) were in backwards the position, described guide finger (15) was inserted in described second depression (28).

6. seat according to claim 4 mechanism, it is characterized in that: described groove is V-shaped.

7. seat according to claim 1 mechanism; It is characterized in that: described lever locked mechanism comprises that the direction along spatial vertical in described second rotating shaft (22) bearing of trend is slidingly arranged in first locations (9) on the described joystick (8), is opened in first positioning groove (10) and second positioning groove (11) on the described seat (7); Described first positioning groove (10) and described second positioning groove (11) lay respectively at the both sides of described first rotating shaft (21); When described seat (7) are under the front position; Described first locations (9) is inserted in described first positioning groove (10); Under described seat (7) were in backwards the position, described first locations (9) was inserted in described second positioning groove (11).

8. seat according to claim 7 mechanism is characterized in that: be provided with the stop gear that is used to limit described first locations (9) sliding scale between described first locations (9) and the described joystick (8).

9. seat according to claim 7 mechanism; It is characterized in that: the top of described joystick (8) is provided with and is used to control the trailing cable operating-controlling mechanism that described first locations (9) moves; Be connected with trailing cable (19) between described trailing cable operating-controlling mechanism and described first locations (9), be provided with between described first locations (9) and the described joystick (8) and make described first locations (9) stably be inserted in second elastic component in described first knock hole (10) or described second knock hole (11).

10. child's tricycle that includes any described seat mechanism among the above claim 1-9; It is characterized in that: this child's tricycle also comprises front fork (1), be arranged at the front-wheel (3) of described front fork (1) bottom, be used to control handlebar (4) that described front-wheel (3) turns to, anterior and described front fork (1) bonded assembly back pole-bracket (5), two groups of trailing wheels (6) that are arranged at described back pole-bracket (5) both sides, rear portion respectively rotatedly, and described pedestal (20) is fixed on the described back pole-bracket (5).

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