A trolley convertible into a rocking chair

Abstract

A rocking chair or trolley with wheels, comprising a support frame with a seat frame, a mounting portion for setting wheels on the support frame, an electric drive mechanism for driving the wheels to rotate back and forth on the support frame, the electric drive mechanism comprising a driving motor fixed on the support frame, a rotating member fixedly connected to the output shaft of the driving motor, a driving member pivoted on the rotating member at a position deviating from its axis, a swinging member for driving the wheels to rotate back and forth pivoted on the other end of the driving member, the pivot point between the driving member and the swinging member deviates from the axis of the swinging member, the swinging member is pivoted on the mounting portion, and the electric drive mechanism also includes a clutch device arranged between the swinging member and the wheel or between the swinging member and the driving motor. The rocking chair or trolley with wheels adopting the above structure has the advantages of simple structure, safety, and fully automatic electric drive and control of the rocking chair function.

Description

Technical Field

[0001] The invention relates to a trolley which can be switched into a rocking chair. Background Art

[0002] As a game tool, rocking chairs bring leisure and entertainment experience to users, and are becoming more and more popular, especially in the field of childcare. Strollers can easily carry infants and young children for activities, and are becoming a must-have equipment for parents in the process of parenting. Some existing strollers do not have automatic rocking chair functions. When parents interact with their children, they can only give their children the experience of rocking chairs manually, which brings physical burden to parents. In addition, some existing rocking chairs have complex structures and are difficult to move, which cannot meet people's higher requirements. Summary of the invention

[0003] The purpose of the present invention is to overcome the shortcomings of the prior art and to provide a trolley which has a simple and effective structure and is automatically electrically driven during the rocking process and can be switched into a rocking chair.

[0004] The present invention is achieved through the following technical solutions:

[0005] A trolley switchable into a rocking chair comprises a support frame (1) with a seat frame, a mounting portion (11) for arranging wheels (2) is provided on the support frame, and is characterized in that: an electric drive mechanism (3) for driving the wheels (2) to rotate back and forth is provided on the support frame (1), the electric drive mechanism (3) comprising a driving motor (31) fixed on the support frame, a rotating member (4) fixedly connected to the output shaft of the driving motor (31), a driving member (5) pivotally connected to the rotating member (4) at a position deviating from the axis thereof, a swinging member (6) for driving the wheels to rotate back and forth is pivotally connected to the other end of the driving member (5), the pivot point between the driving member (5) and the swinging member (6) deviates from the axis of the swinging member, the swinging member (6) is pivotally connected to the mounting portion (11), and the electric drive mechanism (3) further comprises a clutch device (7) arranged between the swinging member (6) and the wheel (2) or between the swinging member (6) and the driving motor (31).

[0006] The invention is further defined as follows: the clutch device (7) comprises a locking portion (71) arranged on the wheel, a locking pin (72) arranged on the swinging member (6) or the support frame (1) for locking the swinging member (6) to the locking portion (71), the locking portion (71) is provided with a locking hole (710) for inserting the locking pin (72), the swinging member (6) is provided with a hole or a notch for matching with the locking pin (72), and the clutch device (7) further comprises a return spring for allowing the locking pin (72) to enter the locking hole (70) and a clutch switch (73) for allowing the locking pin (72) to exit the locking hole (710).

[0007] The invention is further defined as follows: the locking pin (72) is fixed in a circumferential position relative to the swing member (6) or the support frame (1); the clutch switch (73) is pivotally connected to the locking pin (72); the clutch switch (73) is provided with a protrusion (731) and a recessed portion (732); the locking pin (72) is provided with a protrusion (731) and a recessed portion (732) that cooperate with the protrusion (731) and the recessed portion (732) of the clutch switch (73); a transition surface is provided between the protrusion (731) and the recessed portion (732); the transition surface is an inclined surface or an arc surface.

[0008] The clutch device (7) is further defined as follows: the clutch device (7) comprises a locking portion (71) fixedly arranged relative to the wheel, a sliding locking core (74) arranged between the locking portion (71) and the swinging member (6), the sliding locking core (74) being fixed relative to the swinging member (6) in a circumferential direction, the sliding locking core (74) being provided with a locking pin (741) or a locking hole, the locking portion (71) being provided with a locking hole (710) or a locking pin mutually cooperating with the locking pin (741) or the locking hole on the sliding locking core (74), the clutch device (7) further comprising a return spring for causing the locking pin (741) or the locking hole on the sliding locking core (74) to enter a cooperating position with the locking hole (710) or the locking pin on the locking portion (71), and a clutch switch (73) for causing the locking pin (741) or the locking hole on the sliding locking core (74) to exit a cooperating position with the locking hole (710) or the locking pin on the locking portion (71).

[0009] It is further defined as: a track (61) is provided inside the swing member (6) for the sliding locking core (74) to slide back and forth, and a groove (740) or a protrusion is provided on the sliding locking core (74) to cooperate with the above track (61).

[0010] The invention is further defined as follows: the clutch switch (73) and the sliding locking core (74) are pivotally connected to each other, the clutch switch (73) is provided with a protrusion (731) and a recessed portion (732), the sliding locking core (74) is provided with a protrusion (731) and a recessed portion (732) that cooperate with the protrusion (731) and the recessed portion (732) of the clutch switch (73), a transition surface is provided between the protrusion (731) and the recessed portion (732), and the transition surface is an inclined surface or an arc surface.

[0011] It is further defined as follows: the clutch device (7) at least comprises a locking portion (71) for locking the wheel, a clutch switch (73), and a clutch member that can cooperate with or disengage from the locking portion (71) under the control of the clutch switch (73); when the clutch member cooperates with the locking portion (71), the swing member (6) can drive the wheel (2) to rotate back and forth; when the clutch member disengages from the locking portion (71), the wheel (2) can rotate freely; and the clutch member is arranged on the swing member (6) and rotates following the rotation of the swing member (6).

[0012] It is further defined as: the engagement point between the clutch member and the locking portion (71) deviates from the rotation axis of the wheel (2).

[0013] It is further defined as: a first installation box (13) is arranged on the support frame (1), a driving motor (31), a rotating member (4), a driving member (5), and a swinging member (6) are arranged in the first installation box (13), and the clutch member and the clutch switch (73) are arranged in the first installation box (13) at a location where they cooperate with each other, and the components in the first installation box (13) and the first installation box (13) can control at least one wheel to rotate back and forth.

[0014] The invention is further defined as follows: a second mounting box (132) is arranged on the support frame (1), a brake device is arranged in the second mounting box (132), the brake device comprises a second brake pin (81) matched with the locking portion (71), and a second brake driving member (82) for controlling the lateral movement of the brake pin (81), the brake driving member (82) is arranged in the second mounting box (132), the matching part between the brake driving member (82) and the brake pin (81) is arranged in the second mounting box (132), the second mounting box (132) is provided with a hole for the brake pin (81) to extend out, the matching part between the brake pin (81) and the locking portion (71) deviates from the rotation axis of the wheel, and the mounting shell for installing the battery extends into the second mounting box (132).

[0015] It is further defined as: a second installation box (132) is arranged on the support frame (1), a support foot (12) is arranged on the support frame (1), the support foot (12) includes a front support foot and a rear support foot, the first installation box (13) and the second installation box (132) are respectively arranged on the rear support foot, and a shock absorbing mechanism (20) is respectively arranged on the upper part of the first installation box (13) and the upper part of the second installation box (132), and the shock absorbing mechanism (20) is connected to the support frame (1).

[0016] It is further defined as: the first installation box (13) is provided with a hole (9) for the wheel axle to pass through so as to allow the wheel axle to extend into the first installation box (13); the first installation box (13) is also provided with a hole (91) for the clutch member to pass through from the first installation box (13).

[0017] It is further defined as: the first installation box (13) is also provided with a hole or a groove (1314) for the clutch switch (73) to extend into the interior of the first installation box (13).

[0018] It is further defined as: the drive motor (31) comprises a reduction gear box (311) and a motor (310), the output shaft of the motor (310) is connected to the input end of the reduction gear box (311), and the output end of the reduction gear box (311) serves as the output shaft of the drive motor (31).

[0019] It is further defined as follows: the first installation box (13) includes a first installation shell body (131), the first installation shell body (131) is provided with a first installation groove (1310), the driving motor (31), the rotating member (4), the driving member (5), and the swinging member (6) are arranged in the first installation groove (1310), and the first installation shell (13) also includes an outer cover (1312) that closes the first installation groove (1310).

[0020] It is further defined as follows: the drive motor (31) comprises a reduction gear box (311) and a motor (310); the output shaft of the motor (310) is connected to the input end of the reduction gear box (311); the output end of the reduction gear box (311) serves as the output shaft of the drive motor (31); a second installation groove (1311) for installing the drive motor (31) is also provided in the first installation groove (1310) of the first installation box (13); the motor (310) and the reduction gear box (311) of the drive motor (31) are provided in the second installation groove (1311); and a sealing gasket and a sealing cover are provided at the opening of the second installation groove (1311).

[0021] It is further defined as: the clutch member is a locking pin (72), the swing member (6) is a shell, the locking pin (72) is transversely arranged in the swing member (6) and can move transversely relative to the swing member (6) and extend out of the swing member (6), a return spring (721) is arranged in the swing member (6) to move the locking pin (72), and the clutch switch (73) extends into the swing member (6) to drive or allow the locking pin (72) to move transversely so that the locking pin (72) is engaged with or disengaged from the locking portion (71).

[0022] It is further defined as: the clutch switch (73) is also fixedly provided with a clutch drive member (75), the clutch drive member (75) is provided with a mounting cavity (751), the mounting cavity (751) is provided with a matching inclined surface (7511), the locking pin (72) is clamped on the matching inclined surface (7511), and the return spring (721) is provided at one end of the locking pin (72).

[0023] It is further defined as: the trolley that can be switched into a rocking chair also includes a brake device for limiting the rotation of the wheels, the brake device includes a first brake pin (81) that cooperates with the locking portion (71), and a first brake drive member (82) that controls the lateral movement of the brake pin (81), the brake drive member (82) is arranged in the first installation box (13), the matching part between the brake drive member (82) and the brake pin (81) is arranged in the first installation shell (13), and the first installation box (13) is provided with a hole for the brake pin (81) to extend out.

[0024] It is further defined as: a transverse member (121) which can also serve as a mounting portion (11) is connected between the two wheels of the two supporting legs (12); the wheel axle is laterally pivoted on the transverse member (121); the brake device also includes a brake switch (83); the brake switch (83) is fixedly connected to the transverse member (121) which can also serve as the mounting portion (11); and a brake drive member (82) is fixedly connected to the transverse member (121) which can also serve as the mounting portion (11).

[0025] It is further defined as: the brake drive member (82) is provided with an installation cavity, the installation cavity is provided with a matching inclined surface, the first brake pin (81) is clamped on the matching inclined surface, and a return spring is provided at one end of the first brake pin (81) close to the brake switch (83).

[0026] It is further defined as follows: the clutch switch (73) is pivotally connected to the mounting portion (11) and when the clutch member cooperates with the locking portion (71), the clutch switch (73) can rotate back and forth as the wheel rotates back and forth.

[0027] The invention is further defined as follows: an electric drive mechanism (3) for driving the wheel (2) to rotate back and forth is provided on the support frame (1), the electric drive mechanism (3) comprises a drive motor (31) fixed on the support frame, a rotating member (4) is fixedly connected to the output shaft of the drive motor (31), a drive member (5) is pivoted on the rotating member (4) at a position deviated from its axis, the other end of the drive member (5) is pivoted on the wheel, the pivot point between the drive member (5) and the wheel is offset from the axis of the wheel, the support frame (1) is provided with a first installation box (13), the lower part of the support frame (1) is provided with at least three support legs (12) with wheels, the drive motor (31), the rotating member (4), the drive member (5), and the swing member (6) are arranged in the first installation box (13) on any one of the support legs (12) and control at least one wheel to rotate back and forth. The back-and-forth rotation of one wheel on the supporting foot (12) drives the other wheels to rotate back and forth, the first mounting box (13) at least comprises a hole for the wheel axle to pass through so as to allow the wheel axle to extend into the first mounting box (13), and a hole or a groove on the first mounting box (13) for the driving member (5) to extend out of the first mounting box and be pivotally connected to the wheel, and the wheel is pivotally arranged on the mounting portion (11).

[0028] The invention is further defined as follows: an electric drive mechanism (3) for driving the wheel (2) to rotate back and forth is provided on the support frame (1), the electric drive mechanism (3) comprises a drive motor (31) fixed on the support frame, a rotating member (4) is fixedly connected to the output shaft of the drive motor (31), a drive member (5) is pivotally connected to the rotating member (4) at a position deviating from the axis thereof, the other end of the drive member (5) is pivotally connected to a swing member (6), the swing member (6) is pivotally connected to the mounting portion (11), and the swing member (6) is provided with a locking portion (71) ), the swinging member (6) is provided with a locking pin (72) pivotally connected to the locking part (71), the connection point between the connecting member and the locking part (71) is offset from the wheel axis, the supporting frame (1) is provided with a first installation box (13), the lower part of the supporting frame (1) is provided with at least three supporting feet (12) with wheels, the driving motor (31), the rotating member (4), the driving member (5), and the swinging member (6) are arranged in the first installation box (13) on any one of the supporting feet (12) and control at least one wheel to rotate back and forth. The back and forth rotation of one wheel on the supporting foot (12) drives the other wheels to rotate back and forth, the first installation box (13) at least includes a hole for the wheel axle to pass through so as to allow the wheel axle to extend into the first installation box (13) and a hole and a groove on the first installation box (13) for the locking pin (72) to extend and pivotally connected to the locking part (71). The wheel is pivotally arranged on the installation part (11).

[0029] The invention is further defined as follows: an electric drive mechanism (3) for driving the wheel (2) to rotate back and forth is provided on the support frame (1), the electric drive mechanism (3) comprises a drive motor (31) fixed on the support frame, a rotating member (4) is fixedly connected to the output shaft of the drive motor (31), a drive member (5) is pivotally connected to the rotating member (4) at a position deviating from its axis, the other end of the drive member (5) is pivotally connected to a swing member (6), the swing member (6) is fixedly connected to the wheel axle, the pivot point between the drive member (5) and the swing member (6) deviates from the axis of the swing member (6), the support frame (1) is provided with a first installation box (13), the lower part of the support frame (1) is provided with at least three support legs (12) with wheels, the drive motor (31), the rotating member (4), the drive member (5) and the swing member (6) are arranged in the first installation box (13) on any one of the support legs (12) and control at least one wheel to rotate back and forth. The back-and-forth rotation of one wheel on the supporting foot (12) drives the other wheels to rotate back and forth, and the first mounting box (13) at least includes a hole for the wheel axle to pass through so as to allow the wheel axle to extend into the first mounting box (13), and the wheel is pivotally arranged on the mounting portion (11).

[0030] It is further defined as follows: the rotating member (4) and the driving member (5) are in the shape of waist-shaped thin sheets, and their shapes are adapted to the shape of the first installation box (13).

[0031] The invention is further defined as follows: an electric drive mechanism (3) for driving the wheel (2) to rotate back and forth is provided on the support frame (1), the electric drive mechanism (3) comprises a drive motor (31) fixed on the support frame, a rotating member (4) is fixedly connected to the output shaft of the drive motor (31), a drive member (5) is pivotally connected to the rotating member (4) at a position deviating from its axis, a swing member (6) for driving the wheel to rotate back and forth is pivotally connected to the other end of the drive member (5), the pivot point between the drive member (5) and the swing member (6) deviates from the axis of the swing member, the swing member (6) is connected to a mounting rod (122), and the mounting rod is connected to the support frame (1), and the electric drive mechanism (3) also comprises a clutch device (7) arranged between the swing member (6) and the wheel (2) or between the swing member (6) and the drive motor (31).

[0032] It is further defined as follows: the clutch device (7) at least comprises two locking parts (71) for locking the two wheels, a clutch switch (73), and two clutch members that can cooperate with or disengage from the locking parts (71) under the control of the clutch switch (73); when the clutch members cooperate with the locking parts (71), the swing member (6) can drive the wheel (2) to rotate back and forth; when the clutch members disengage from the locking parts (71), the two wheels (2) can rotate freely; and the two clutch members are arranged on the swing member (6) and rotate along with the swing member (6).

[0033] It is further defined as: the engagement point between the clutch member and the locking portion (71) deviates from the rotation axis of the wheel (2).

[0034] The invention is further defined as follows: a transverse member (121) is arranged between the two mounting parts (11) of the rocking chair or trolley, the mounting rod (122) is connected to the transverse member (121), a mounting box (14) is arranged in the middle of the transverse member (121), and a driving motor (31), a rotating member (4), a driving member (5), and a swinging member (6) are arranged in the mounting box (14).

[0035] It is further defined as: the installation box (14) is fixedly connected to the transverse member (121), and the transverse member (121) is fixed on the support frame (1) and connected to the installation portion (11).

[0036] It is further defined as: a shock absorbing mechanism (20) is provided above the mounting portion (11).

[0037] It is further defined as: the support frame (1) is provided with a mounting box (14) and a transverse member (121); the clutch device (7) comprises a clutch switch (73), a clutch drive member (75), and a locking pin (72); the clutch drive member (75) and the locking pin (72) are partially or completely arranged in an installation space formed by the mounting box (14), the mounting portion (11) and the transverse member (121); the clutch switch (73) drives the locking pin (72) to move laterally and extend out of or enter the installation space.

[0038] It is further defined as: the brake device includes a brake switch (83), a brake drive member (82), and a brake pin (81); the brake drive member (82) and the brake pin (81) are arranged in an installation space formed by the installation box (14), the installation portion (11) and the transverse member (121); the brake switch (83) drives the brake pin (81) to move laterally and extend out of or enter the installation space.

[0039] The invention is further defined as follows: the clutch switch (73) is configured to engage with the clutch drive member (75); the clutch drive member (75) comprises a transmission ring (755) and a transmission bar (756); a matching inclined surface (7511) is provided on the transmission ring (755); the transmission bar (756) is fixedly connected to the transmission ring (755); the transmission bar (756) is fixedly connected to the locking pin (72); the reset spring (721) is provided at one end of the locking pin (72) close to the transmission bar (756); and the clutch switch (73) is provided with a driving inclined surface (731) for driving the matching inclined surface (7511) to move.

[0040] It is further defined as: the brake switch (83) is configured to be engaged with the brake drive member (82), the brake drive member (82) includes a rotating inclined surface (821) and a drive strip (822), one end of the drive strip (822) that cooperates with the rotating inclined surface (821) is provided with a guide circle, one end of the drive strip (822) that cooperates with the brake pin (81) is provided with an installation cavity for the brake pin (81) to move, and the peripheral wall of the installation cavity is provided with a moving range groove (811) and a strain groove (812) of the drive strip (822).

[0041] The invention is further defined as follows: the installation box (14), the installation portion (11) and the transverse member (121) constitute an installation space; the transverse member (121) is fixed on the support frame (1) and is fixedly connected to the installation portion (11); a mounting position for supporting the installation rod (122) is provided inside the transverse member (121) or the installation box (14); a swinging tube (123) swinging therewith is provided on the swinging member (6); the swinging tube (123) is used for the clutch member to move inside the swinging tube (123); and the swinging tube (123) is provided in the installation space.

[0042] It is further defined as: the clutch member is a locking pin (72), the mounting portion (11) is provided with a hole or a groove for the locking pin (72) to extend into or withdraw from, thereby locking or separating from the locking portion (71), and the clutch switch (73) is connected to the mounting rod (122).

[0043] It is further defined as: the transmission ring (755) is sleeved on the swing tube (123) and can move laterally a certain distance relative to the swing tube (123); the transmission bar (756) is arranged in the swing tube (123) and can move laterally a certain distance relative to the swing tube (123).

[0044] The following is an independent technical solution:

[0045] A trolley that can be switched into a rocking chair comprises a support frame (1) with a seat frame, a mounting portion (11) for arranging wheels (2) is provided on the support frame, and is characterized in that: an electric drive mechanism (3) for driving the wheels (2) to rotate back and forth is provided on the support frame (1), the electric drive mechanism (3) comprises a drive motor (31) fixed on the support frame, a rotating member (4) is fixedly connected to the output shaft of the drive motor (31), a drive member (5) is pivotally connected to the rotating member (4) at a position deviating from its axis, the other end of the drive member (5) is pivotally connected to the wheel (2) at a position deviating from its wheel axis or pivotally connected to a swing member (6), when When the driving member (5) is pivotally connected to the swinging member (6), the swinging member (6) is fixedly connected to the wheel axle, and the pivot point between the driving member (5) and the swinging member (6) deviates from the axis of the swinging member (6). A first installation box (13) is arranged on the installation portion, and the driving motor (31), the rotating member (4), the driving member (5), and the swinging member (6) are arranged in the first installation box (13), or the driving motor (31), the rotating member (4), and the driving member (5) are arranged in the first installation box (13). The first installation box (13) and the driving motor (31), the rotating member (4), the driving member (5), and the swinging member (6) drive at least one wheel to rotate.

[0046] It is further defined as: a second installation box is also provided on the installation portion, the battery and the second brake driver are installed in the second installation box, and the first brake driver is installed in the first installation box.

[0047] The following is an independent technical solution:

[0048] A trolley that can be switched into a rocking chair, comprising a support frame (1) with a seat frame, a mounting portion (11) for arranging wheels (2) on the support frame, characterized in that: an electric drive mechanism (3) for driving the wheels (2) to rotate back and forth is provided on the support frame (1), the electric drive mechanism (3) comprising a drive motor (31) fixed on the support frame, a rotating member (4) fixedly connected to the output shaft of the drive motor (31), a drive member (5) pivotally connected to the rotating member (4) at a position deviating from the axis thereof, and the other end of the drive member (5) pivotally connected to the rotating member (4) The wheel (2) is at a position deviated from its wheel axis or is pivoted to the swing member (6). When the driving member (5) is pivoted to the swing member (6), the swing member (6) is fixedly connected to the wheel axle. The pivot point between the driving member (5) and the swing member (6) deviates from the axis of the swing member (6). A transverse member (121) is arranged between the two mounting parts (11) of the rocking chair or trolley. An installation box (14) is arranged in the middle of the transverse member (121). The driving motor (31), the rotating member (4), the driving member (5) and the swing member (6) are arranged in the installation box (14).

[0049] It is further defined as: the installation box (14) is fixedly connected to the transverse member (121), and the transverse member (121) is fixed on the support frame (1) and connected to the installation portion (11).

[0050] Compared with the prior art, the advantages of the present invention are:

[0051] 1. The present invention discloses a trolley that can be switched into a rocking chair. The electric drive mechanism outputs power to the driving member through the rotating member. The driving member drives the rocking member to make a rocking motion. The rocking member drives the wheels to rotate back and forth, thereby realizing the function of an automatic rocking chair. The above has a simple structure, frees the hands of parents or operators, and reduces the burden.

[0052] 2. A clutch device is provided between the swinging member and the wheel or between the swinging member and the driving motor. Only when the clutch is switched to a suitable state can the rocking chair of the present invention continue to function, thus having the advantage of safety.

[0053] 3. The support frame is equipped with an electric drive mechanism, which can realize fully automatic electric drive and control. Through electric control, it can automatically realize various swing frequencies or amplitudes, which has the advantages of convenient control and fully automatic operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] Figure 1 It is a schematic structural diagram of embodiment 1 of the present invention.

[0055] Figure 2 It is a schematic diagram of the explosion structure of Example 1 of the present invention.

[0056] Figure 3 yes Figure 2 Schematic diagram of the enlarged structure at A1.

[0057] Figure 4 It is a schematic diagram of the clutch switch structure of the present invention.

[0058] Figure 5 It is a structural schematic diagram of the locking pin of the present invention.

[0059] Figure 6 It is a structural schematic diagram of the rocking chair mode when the clutch device of Example 1 of the present invention is in the "closed" state.

[0060] Figure 7 yes Figure 6 Schematic diagram of the enlarged structure at A2.

[0061] Figure 8 It is a structural schematic diagram of the trolley mode when the clutch device of Example 1 is in the "off" state.

[0062] Fig. 9It is a schematic structural diagram of embodiment 2 of the present invention.

[0063] Fig.10 yes Fig. 9 Schematic diagram of the enlarged structure at B1.

[0064] Fig.11 It is a structural schematic diagram of an angle of embodiment 2 of the present invention.

[0065] Fig.12 yes Fig.11 Schematic diagram of the enlarged structure at B2.

[0066] Fig.13 It is a schematic structural diagram of another angle of embodiment 2 of the present invention.

[0067] Fig.14 yes Fig.13 Schematic diagram of the enlarged structure at B3.

[0068] Fig.15 It is a structural schematic diagram of the rocking chair mode when the clutch device of Example 2 of the present invention is in the "closed" state.

[0069] Fig.16 yes Fig.15 Schematic diagram of the enlarged structure at B4.

[0070] Fig.17 It is a structural schematic diagram of the trolley mode when the clutch device of Example 2 of the present invention is in the "off" state.

[0071] Fig.18 It is a schematic structural diagram of embodiment 3 of the present invention.

[0072] Fig.19 It is a schematic diagram of the internal structure of the first installation box of Example 3 of the present invention.

[0073] Fig. 20 It is a schematic diagram of the internal structure of the first installation box of Example 3 of the present invention.

[0074] Fig.21 It is a schematic structural diagram of the clutch device of Example 3 of the present invention.

[0075] Fig. 22 It is a schematic structural diagram of the clutch device of Example 3 of the present invention.

[0076] Fig.23 It is a schematic structural diagram of a brake device according to Embodiment 3 of the present invention.

[0077] Fig.24 It is a schematic structural diagram of embodiment 4 of the present invention.

[0078] Fig.25It is a schematic diagram of the internal structure of the installation box of Example 4 of the present invention.

[0079] Fig.26 It is a schematic structural diagram of a clutch device according to embodiment 4 of the present invention.

[0080] Fig. 27 It is a schematic structural diagram of a clutch device according to embodiment 4 of the present invention.

[0081] Fig.28 It is a schematic structural diagram of a brake device according to embodiment 4 of the present invention. DETAILED DESCRIPTION

[0082] The following is combined with Figures 1 to 17 The present invention is further described:

[0083] A trolley that can be switched into a rocking chair, includes a support frame 1 with a seat frame, and a mounting portion 11 for setting wheels 2 is provided on the support frame. The characteristic is that: an electric drive mechanism 3 for driving the wheels 2 to rotate back and forth is provided on the support frame 1, and the electric drive mechanism 3 includes a driving motor 31 fixed to the support frame, a rotating member 4 is fixedly connected to the output shaft of the driving motor 31, a driving member 5 is pivoted on the rotating member 4 at a position deviated from its axis, and a swinging member 6 for driving the wheels to rotate back and forth is pivoted on the other end of the driving member 5, the pivot point between the driving member 5 and the swinging member 6 deviates from the axis of the swinging member, and the swinging member 6 is pivoted on the mounting portion 11, and the electric drive mechanism 3 also includes a clutch device 7 arranged between the swinging member 6 and the wheel 2 or between the swinging member 6 and the driving motor 31.

[0084] The power of the driving motor on the electric drive mechanism is output to the rotating part. The motor on the driving motor can be connected to a reduction gear set to output power to the rotating part or to a worm gear to output power to the rotating part, and drive the rotating part to rotate around the output shaft of the driving motor. The rotating part is pivoted to one end of the driving part, and the pivot point deviates from the axis of the rotating part. The other end of the driving part is pivoted to the swinging part, and the pivot point deviates from the axis of the swinging part. Here, the rotating part is equivalent to a crank, and the swinging part is equivalent to a rocker. The driving part converts the rotational motion of the rotating part into the back-and-forth rotational motion of the swinging part. The swinging part drives the wheel to roll back and forth through its swinging motion. The support frame moves back and forth on the ground under the action of the wheel, thereby realizing the rocking chair function. For safety reasons, a clutch device is provided between the swinging part and the wheel, or between the driving motor and the swinging part. Only when the clutch device is in a suitable state can the present invention perform the function of a rocking chair. The clutch also serves to switch the product mode-rocking chair mode and cart mode. The electric drive mechanism enables the present invention to automatically realize the function of the rocking chair, thereby freeing the operator's hands and reducing the burden of use. The function conversion between the trolley mode and the rocking chair mode of the rocking chair or trolley is realized by the clutch device. When the motor on the drive motor is connected to the reduction gear set to output power to the crank mechanism, it is ensured that when in the rocking chair mode, even if the drive motor fails, the rocking chair or trolley will not continue to move, that is, when the drive motor fails, the crank mechanism will move to the dead point at most, and the drive mechanism will stop moving, thereby ensuring the safety of the user. Or the motor on the drive motor is connected to the worm gear to output power to the crank mechanism. When the drive motor fails, the drive motor stops rotating and the wheels also stop rotating at the same time, thereby ensuring that the rocking chair or trolley only moves in a very small range or does not move.

[0085] The rocking chair or trolley of the present invention realizes the rocking chair function of the support frame moving back and forth on the ground under the action of wheels, and the functional conversion between the trolley mode and the rocking chair mode of the rocking chair or trolley through the combination of the above-mentioned clutch device and the crank structure. At the same time, it has high safety, simple structure and easy operation.

[0086] Embodiment 1:

[0087] See also Figures 1 to 8The clutch device 7 includes a locking portion 71 arranged on the wheel, a locking pin 72 arranged on the swinging member 6 or the support frame 1 for locking the swinging member 6 in the locking portion 71, a locking hole 710 for inserting the locking pin 72 is provided on the locking portion 71, a hole or notch matching with the locking pin 72 is provided on the swinging member 6, and the clutch device 7 also includes a reset spring for allowing the locking pin 72 to enter the locking hole 70 and a clutch switch 73 for allowing the locking pin 72 to exit the locking hole 710. When the locking pin locks the swinging member in the locking hole on the locking portion of the wheel through the action of the reset spring and matches with the hole or notch on the swinging member, the clutch device is in a "closed" state at this time, that is, the present invention is in a rocking chair mode, the relative positions of the swinging member and the wheel in the circumferential direction are fixed, and when the driving member drives the swinging member to make a back-and-forth rotational motion, the wheel makes the same back-and-forth rotational motion together with the swinging member. The clutch switch is operated to make the locking pin disengage from the locking hole on the locking part. At this time, the clutch device is in the "off" state, that is, the present invention is in the trolley mode. The relative positions of the swinging member and the wheel in the circumferential direction are no longer fixed, and the power of the electric drive mechanism will not be transmitted to the wheel. The function of the trolley can be realized alone through the freely rotating wheels.

[0088] The locking pin 72 is fixed in a circumferential position relative to the swing member 6 or the support frame 1, the clutch switch 73 is pivotally connected to the locking pin 72, the clutch switch 73 is provided with a protrusion 731 and a recessed portion 732, the locking pin 72 is provided with a protrusion 731 and a recessed portion 732 that cooperate with the protrusion 731 and the recessed portion 732 of the clutch switch 73, a transition surface is provided between the protrusion 731 and the recessed portion 732, and the transition surface is an inclined surface or an arc surface. When the clutch device is in the "closed" state, the protrusion or recessed portion on the clutch switch cooperates with the recessed portion or protrusion on the locking pin, the locking pin is in the locking hole on the locking portion of the wheel, and the present invention is in the rocking chair mode. When the clutch switch is turned, and the protrusion on the clutch switch is close enough to the protrusion on the locking pin or the protrusions of the two are relatively matched, the locking pin is "squeezed out" from the original position and escapes from the locking hole on the locking part of the wheel. At this time, the clutch device is in the "off" state, and the power of the electric drive mechanism will not be transmitted to the wheel, that is, the present invention is in the trolley mode. In order to ensure that the position of the locking pin moves normally and smoothly, a transition surface is provided between the protrusion and the recessed portion, and the transition surface is an inclined surface or an arc surface.

[0089] Embodiment 2:

[0090] See also Figures 9 to 17The clutch device 7 includes a locking portion 71 fixedly arranged relative to the wheel, a sliding locking core 74 arranged between the locking portion 71 and the swinging member 6, the sliding locking core 74 is fixed relative to the swinging member 6 in a circumferential direction, a locking pin 741 or a locking hole is arranged on the sliding locking core 74, and a locking hole 710 or a locking pin that cooperates with the locking pin 741 or the locking hole on the sliding locking core 74 is arranged on the locking portion 71, the clutch device 7 also includes a return spring that allows the locking pin 741 or the locking hole on the sliding locking core 74 to enter a position that cooperates with the locking hole 710 or the locking pin on the locking portion 71, and a clutch switch 73 that allows the locking pin 741 or the locking hole on the sliding locking core 74 to exit a position that cooperates with the locking hole 710 or the locking pin on the locking portion 71. When the sliding locking core is engaged with the locking hole or locking pin on the locking part by the action of the return spring, the clutch device is in the "engaged" state, that is, the present invention is in the rocking chair mode, and the circumferential relative position between the swinging member fixed relative to the sliding locking core and the wheel is fixed. When the driving member drives the swinging member to rotate back and forth, the wheel and the swinging member perform the same back and forth rotational movement. Operate the clutch switch so that the locking pin or locking hole on the sliding locking core is disengaged from the locking hole or locking pin on the locking part. At this time, the clutch device is in the "disengaged" state, that is, the present invention is in the trolley mode, and the circumferential relative position between the swinging member fixed relative to the sliding locking core and the wheel is no longer fixed, and the power of the electric drive mechanism will not be transmitted to the wheel. The function of the trolley can be realized alone through the freely rotating wheel.

[0091] In order to realize the sliding of the sliding locking core in the swinging member, a track 61 is provided in the swinging member 6 for the sliding locking core 74 to slide back and forth, and a groove 740 or a protrusion cooperating with the above track 61 is provided on the sliding locking core 74.

[0092] The clutch switch 73 and the sliding lock core 74 are pivotally connected to each other. The clutch switch 73 is provided with a protrusion 731 and a recessed portion 732. The sliding lock core 74 is provided with a protrusion 731 and a recessed portion 732 that cooperate with the protrusion 731 and the recessed portion 732 of the clutch switch 73. A transition surface is provided between the protrusion 731 and the recessed portion 732, and the transition surface is an inclined surface or an arc surface. When the clutch device is in the "closed" state, the protrusion or recessed portion on the clutch switch cooperates with the recessed portion or protrusion on the sliding lock core, and the locking pin or locking hole on the sliding lock core cooperates with the locking hole or locking pin on the locking portion, and the present invention is in the rocking chair mode. When the clutch switch is turned, and the protrusion on the clutch switch is close enough to the protrusion on the sliding lock core or the protrusions of the two are relatively matched, the sliding lock core is "squeezed out" of the original position, and the locking pin or locking hole on it is separated from the matching position with the locking hole or locking pin on the locking part. At this time, the clutch device is in the "off" state, and the power of the electric drive mechanism will not be transmitted to the wheel, that is, the present invention is in the trolley mode. In order to ensure the normal and smooth movement of the position of the sliding lock core, a transition surface is provided between the protrusion and the recessed portion, and the transition surface is an inclined surface or an arc surface.

[0093] Embodiment 3:

[0094] See also Figures 18 to 23 :

[0095] The clutch device 7 at least includes a locking part 71 fixedly arranged with the wheel, a clutch switch 73, and a clutch member that can be matched or disengaged with the locking part 71 under the control of the clutch switch 73. When the clutch member is matched with the locking part 71, the swing member 6 can drive the wheel 2 to rotate back and forth; when the clutch member is disengaged from the locking part 71, the wheel 2 can rotate freely; the clutch member is arranged on the swing member 6 and rotates with the swing member 6. The clutch member rotates with the swing member 6. When the clutch member is matched with the locking part 71, the wheel 2, the clutch member, and the swing member 6 rotate together, making the transmission structure easier to realize. The matching part of the clutch member and the locking part 71 is concentric with the rotation axis of the wheel 2. The matching part of the clutch member and the locking part 71 can also deviate from the rotation axis of the wheel 2. Preferably, the matching part of the clutch member and the locking part 71 deviates from the rotation axis of the wheel 2, and a force arm is generated by eccentricity, so that the driving device can more easily drive the rocking chair or cart to move back and forth.

[0096] In order to improve the reliability of the clutch device and the brake device of the rocking chair or the trolley and improve the assembly efficiency, it is preferred that the main components of the clutch device 7 and the main components of the brake device are integrated into the first installation box 13.

[0097] Preferably, the first mounting box 13 is arranged on the support frame 1, and the first mounting box 13 is provided with a hole 9 for the wheel axle to pass through so as to allow the wheel axle to extend into the first mounting box 13, and a hole or groove for the clutch switch 73 to extend to the outside of the first mounting shell 13, and a hole for the locking pin 72 and the brake pin 81 to extend. The outer shell of the first mounting box 13 is composed of a first mounting shell body 131 and an outer cover 1312, thereby forming an installation space for a first mounting groove 1310 and a second mounting groove 1311, and the driving motor 31, the rotating member 4, the driving member 5, the swinging member 6 and the brake device are arranged in the first mounting groove 1310, wherein the rotating member 4 and the driving member 5 are waist-shaped thin sheets and are connected to the first The shape of a mounting box is adapted to minimize the size of the first mounting box. The motor 310 and the reduction gear box 311 of the drive motor 31 are arranged in the second mounting groove 1311. A sealing gasket and a sealing cover are arranged at the opening of the second mounting groove 1311. The driving motor 31 is sealed in the accommodating cavity of the second mounting groove 1311 through the cooperation of the sealing gasket and the sealing cover, which greatly improves the waterproof performance of the driving motor 31. The second mounting groove 1311 is preferably arranged at an end of the first mounting box 13 away from the ground, which increases the upper limit of the wading depth allowed by the rocking chair or the cart, and further, the reduction gear box 311 is pressed against the opening edge of the second mounting groove 1311 through an elastic closed ring to form a waterproof gasket.

[0098] Preferably, the first installation box 13 is arranged on one rear supporting foot 12 of the support frame 1, and a second installation box 132 is also arranged on the other rear supporting foot 12, and a brake device and a battery installation shell are arranged in the second installation box.

[0099] Preferably, a shock absorbing mechanism 20 is respectively provided on the upper part of the first installation box 13 and the upper part of the second installation box 132, and the shock absorbing mechanism 20 is connected to the support frame 1. The shock absorbing mechanism 20 and the installation box are integrated and become a part of the support frame, making the overall structure more simple and compact, and also improving the assembly efficiency.

[0100] The clutch device 7 comprises a clutch switch 73, a clutch transmission member 75, and a clutch member. The clutch member is a locking pin 72, which is laterally arranged in the swing member 6 and can move laterally relative to the swing member 6 and extend out of the swing member 6 and is driven to rotate by the driving member 5. The clutch transmission member 75 is fixedly connected to the clutch switch 73. The clutch transmission member 75 is provided with a mounting cavity 751, and the mounting cavity 751 is provided with a matching inclined surface 7511. The locking pin 72 is clamped on the matching inclined surface 7511. A return spring 721 is provided at one end of the locking pin 72 close to the clutch switch 73. When the clutch switch 73 is stepped on, the clutch transmission member 75 rotates downward synchronously, and the matching inclined surface 7511 applies a force to the locking pin 72 to squeeze the return spring 721. The locking pin 72 moves in a direction away from the locking portion 71 and finally stops on the step of the matching inclined surface 7511. At this time, the clutch device is in a "disconnected" state, and the power of the electric drive mechanism will not be transmitted to the wheels, that is, the present invention is in a trolley mode. When the clutch switch 73 is rotated upward, the clutch transmission member 75 is rotated upward synchronously, and the locking pin 72 moves toward the locking portion 71 through the action of the return spring 721 and finally stops on the other step of the matching inclined surface 7511. At this time, the clutch device is in the "closed" state, that is, the present invention is in the rocking chair mode.

[0101] The brake device includes a brake switch 83, a brake drive member 82 and a brake pin 81. The brake switch 83 and the brake drive member 82 are fixedly connected to the transverse member 121. The brake drive member 82 is provided with a mounting cavity 821. The end of the mounting cavity 821 that engages with the brake pin 81 is provided with a matching inclined surface. The brake pin 81 is mounted on the matching inclined surface. A return spring is provided at the end of the brake pin 81 close to the brake switch 83. When the brake switch 83 is stepped on, the brake switch 83 drives the transverse member 121 to rotate synchronously, and the transverse member 121 drives the brake drive member 82 to rotate synchronously. At this time, the brake pin 81 moves in a direction close to the locking portion 71 under the action of the return spring and finally stops on the step of the matching inclined surface. At this time, the brake state is reached. When the brake switch 83 is released, the brake pin 81 is squeezed by the matching inclined surface of the brake drive member 82 so that it moves in a direction away from the locking portion 71 and finally stops on the other step of the matching inclined surface. At this time, the brake device is in a closed state.

[0102] Embodiment 4:

[0103] See also Figure 24 to Figure 28 :

[0104] A trolley switchable into a rocking chair, comprising a support frame 1 with a seat frame, a mounting portion 11 for setting wheels 2 is provided on the support frame, an electric drive mechanism 3 for driving the wheels 2 to rotate back and forth is provided on the support frame 1, the electric drive mechanism 3 comprises a driving motor 31 fixed on the support frame, a rotating member 4 is fixedly connected to the output shaft of the driving motor 31, a driving member 5 is pivoted on the rotating member 4 at a position deviated from its axis, a swinging member 6 for driving the wheels to rotate back and forth is pivoted on the other end of the driving member 5, the pivot point between the driving member 5 and the swinging member 6 deviates from the axis of the swinging member, the swinging member 6 is connected to a mounting rod 122, and the mounting rod is connected to the support frame 1, the electric drive mechanism 3 also comprises a clutch device 7 arranged between the swinging member 6 and the wheel 2 or between the swinging member 6 and the driving motor 31, the clutch device 7 at least comprises two locking portions 71 for locking two wheels, a clutch switch 73 and a clutch switch 73. 3, the locking part 71 can be fixedly arranged on the axle fixed to the wheel, or can be fixedly arranged on the wheel. When the clutch cooperates with the locking part 71, the swinging member 6 can drive the wheel 2 to rotate back and forth; when the clutch disengages from the locking part 71, the two wheels 2 can rotate freely; the two clutches are arranged on the swinging member 6 and rotate with the swinging member 6, and the matching part between the clutch and the locking part 71 deviates from the rotation axis of the wheel 2. A transverse member 121 is arranged between the two mounting parts 11, and a mounting rod 122 is connected to the transverse member 121. A mounting box 14 is arranged in the middle of the transverse member 121. The driving motor 31, the rotating member 4, the driving member 5, and the swinging member 6 are arranged in the mounting box 14. The mounting box 14 is fixedly connected to the transverse member 121, and the transverse member 121 is fixed on the support frame 1 and connected to the mounting part 11. A shock absorbing mechanism 20 is arranged above the mounting part 11.

[0105] The installation box 14 is arranged in the middle of the transverse member 121 and integrates relevant driving components, clutch device components and brake components, which greatly reduces the volume of the installation parts 11 arranged at both ends of the transverse member 121, making the overall structure of the product more reasonable and beautiful.

[0106] In addition, through the cooperation of an installation box 14 with a driving device and a clutch device, real-time control of the movement or stopping of the two wheels is achieved, thereby realizing the rocking chair function of the support frame moving back and forth on the ground under the action of the wheels, and the functional conversion between the trolley mode and the rocking chair mode of the rocking chair or trolley. This control structure has higher reliability and safety, and is simple in structure and easy to operate.

[0107] Safety and reliability are reflected in that when in the rocking chair mode, the rocking chair or cart will not continue to move even if the driving motor fails, that is, when the driving motor fails, the crank mechanism will stop moving when it moves to the dead point at most, thereby ensuring the safety of the user. Alternatively, the motor on the driving motor is connected to the worm gear to output power to the crank mechanism. When the driving motor fails, the driving motor stops rotating and the wheels also stop rotating at the same time, thereby ensuring that the rocking chair or cart only moves in a very small range or does not move. The present invention improves safety and reliability by controlling two wheels with one crank mechanism, and has a better rocking effect. When the rocking speed is fast, no turning will occur, further improving safety and reliability.

[0108] The support frame 1 is provided with an installation box 14 and a transverse member 121. The clutch device 7 includes a clutch switch 73, a clutch driving member 75, and a locking pin 72. The clutch driving member 75 and the locking pin 72 are partially or completely arranged in the installation space formed by the installation box 14, the installation part 11 and the transverse member 121. The clutch switch 73 drives the locking pin 72 to move laterally to extend out or enter the installation space. The brake device includes a brake switch 83, a brake driving member 82, and a brake pin 81. The brake driving member 82 and the brake pin 81 are arranged in the installation space formed by the installation box 14, the installation part 11 and the transverse member 121. The brake switch 83 drives the brake pin 81 to move laterally to extend out or enter the installation space. By installing the driving device, the clutch device, and the brake device in this installation space, the aesthetics of the product is improved. At the same time, the installation space is also used as a part of the fixed support frame, and the structure is more compact and reasonable.

[0109] The clutch switch 73 is engaged with the clutch driving member 75, and the clutch driving member 75 includes a transmission ring 755 and a transmission bar 756. The transmission ring 755 is provided with a matching inclined surface 7511, and the transmission bar 756 is fixedly connected to the transmission ring 755, and the transmission bar 756 is fixedly connected to the locking pin 72. The reset spring 721 is arranged at one end of the locking pin 72 close to the transmission bar 756. The clutch switch 73 is provided with a driving inclined surface 731 for driving the matching inclined surface 7511 to move. When the clutch switch 73 is stepped on, the driving inclined surface 731 squeezes the matching inclined surface 7511, thereby driving the transmission ring 755 to move in a direction away from the locking portion 71, and the transmission ring 755 drives the transmission bar 756 to move synchronously, and the transmission bar 756 drives the locking pin 72 to squeeze the reset spring 721 to move synchronously. When the transmission ring 755 moves to the step of the driving inclined surface 731, the clutch device is in the "off" state at this time, and the power of the electric drive mechanism will not be transmitted to the wheels, that is, the present invention is in the trolley mode. When the clutch switch 73 rotates in the other direction, the clutch transmission member 75 rotates synchronously, the transmission ring 755 moves toward the locking portion 71 and finally stops on the other step of the driving slope 731. At this time, the clutch device is in the "closed" state, that is, the present invention is in the rocking chair mode.

[0110] The two clutch members are controlled by a clutch switch to achieve the cooperation with the wheel. Since the clutch device swings along with the swing member 6, the structure is more reasonable and simple.

[0111] The brake switch 83 is engaged with the brake drive member 82, and the brake drive member 82 includes a rotating inclined surface 821 and a driving strip 822. The end of the driving strip 822 that cooperates with the rotating inclined surface 821 is provided with a guide circle, and the end of the driving strip 822 that cooperates with the brake pin 81 is provided with a mounting cavity for the brake pin 81 to move. The peripheral wall of the mounting cavity is provided with a moving range groove 811 and a strain groove 812 for the driving strip 822. The mounting box 14, the mounting portion 11 and the horizontal member 121 constitute an installation space. The horizontal member 121 is fixed on the support frame 1 and is fixedly connected to the mounting portion 11. The horizontal member 121 or the mounting box 14 is provided with a The mounting position of the supporting mounting rod 122 is provided with a swinging tube 123 on the swinging member 6 which swings with it, the swinging tube 123 is used for the clutch member to move in the swinging tube 123, the swinging tube 123 is arranged in the mounting space, the clutch member is a locking pin 72, the mounting portion 11 is provided with a hole or a groove for the locking pin 72 to extend into or withdraw from, so as to lock or separate from the locking portion 71, the clutch switch 73 is connected to the mounting rod 122, the transmission ring 755 is sleeved on the swinging tube 123 and can move laterally a certain distance relative to the swinging tube 123, and the transmission bar 756 is arranged in the swinging tube 123 and can move laterally a certain distance relative to the swinging tube 123.

[0112] The following is an embodiment formed by an independent technical solution:

[0113] In order to simplify the design and reduce the cost, a trolley that can be switched into a rocking chair of the present invention comprises a support frame 1 with a seat frame, a mounting portion 11 for setting a wheel 2 is provided on the support frame, and the characteristics are as follows: an electric drive mechanism 3 for driving the wheel 2 to rotate back and forth is provided on the support frame 1, and the electric drive mechanism 3 comprises a driving motor 31 fixed to the support frame, a rotating member 4 is fixedly connected to the output shaft of the driving motor 31, a driving member 5 is pivotally connected to the rotating member 4 at a position deviating from its axis, and the other end of the driving member 5 is pivotally connected to the wheel 2 at a position deviating from its wheel axis or pivotally connected to the swinging member 6, and when the driving member 5 is pivotally connected to the swinging member 6 When connected, the swinging member 6 is fixedly connected to the wheel axle, the pivot point of the driving member 5 and the swinging member 6 deviates from the axis center of the swinging member 6, and a first installation box 13 is arranged on the installation part, the driving motor 31, the rotating member 4, the driving member 5, and the swinging member 6 are arranged in the first installation box 13, or the driving motor 31, the rotating member 4, and the driving member 5 are arranged in the first installation box 13, the first installation box 13 and the driving motor 31, the rotating member 4, the driving member 5, and the swinging member 6 drive at least one wheel to rotate, and a second installation box is arranged on the other installation part, the battery and the second brake driving member are installed in the second installation box, and the first brake driving member is installed in the first installation box.

[0114] This embodiment removes the clutch device, simplifies the design, and helps reduce costs.

[0115] The following is an embodiment formed by an independent technical solution:

[0116] In order to simplify the design and reduce the cost, a trolley that can be switched into a rocking chair of the present invention comprises a support frame 1 with a seat frame, a mounting portion 11 for setting a wheel 2 is provided on the support frame, and the characteristics are as follows: an electric drive mechanism 3 for driving the wheel 2 to rotate back and forth is provided on the support frame 1, and the electric drive mechanism 3 comprises a drive motor 31 fixed to the support frame, a rotating member 4 is fixedly connected to the output shaft of the drive motor 31, a drive member 5 is pivotally connected to the rotating member 4 at a position deviating from its axis, and the other end of the drive member 5 is pivotally connected to the wheel 2 at a position deviating from its axis. The driving member 5 is pivoted to the swinging member 6, and the swinging member 6 is fixedly connected to the wheel axle. The pivot point of the driving member 5 and the swinging member 6 deviates from the axis of the swinging member 6. A transverse member 121 is arranged between the two mounting parts 11 of the rocking chair or trolley. A mounting box 14 is arranged in the middle of the transverse member 121. The driving motor 31, the rotating member 4, the driving member 5, and the swinging member 6 are arranged in the mounting box 14. The mounting box 14 is fixedly connected to the transverse member 121. The transverse member 121 is fixed on the support frame 1 and connected to the mounting part 11.

Claims

1. A trolley that can be switched into a rocking chair, comprising a support frame (1) with a seat frame, a mounting portion (11) for arranging wheels (2) on the support frame, characterized in that: An electric drive mechanism (3) for driving the wheel (2) to rotate back and forth is provided on the support frame (1). The electric drive mechanism (3) comprises a drive motor (31) fixed on the support frame. A rotating member (4) is fixedly connected to the output shaft of the drive motor (31). A drive member (5) is pivotally connected to the rotating member (4) at a position deviating from its axis. A swing member (6) for driving the wheel to rotate back and forth is pivotally connected to the other end of the drive member (5). The pivot point between the drive member (5) and the swing member (6) is deviated from the axis of the swing member. The swing member (6) is pivotally connected to the mounting portion (11). The electric drive mechanism (3) also comprises a clutch device (7) arranged between the swing member (6) and the drive motor (31). The clutch device is used to realize the functional conversion between the rocking chair mode and the trolley mode of the rocking chair or trolley. The clutch device (7) comprises a locking portion (71) arranged on the wheel, a locking portion (72) arranged on the swing member (6) and a locking portion (73) for locking the swing member (6) in the locking portion (74). The locking portion (71) is provided with a locking hole (710) for inserting the locking pin (72), the swing member (6) is provided with a hole or a notch for matching with the locking pin (72), the clutch device (7) further comprises a return spring for allowing the locking pin (72) to enter the locking hole (710) and a clutch switch (73) for allowing the locking pin (72) to exit the locking hole (710), the circumferential position of the locking pin (72) relative to the swing member (6) ) or a support frame (1), the clutch switch (73) is pivotally connected to the locking pin (72), the clutch switch (73) is provided with a protruding portion (731) and a recessed portion (732), the locking pin (72) is provided with a protruding portion (731) and a recessed portion (732) that cooperate with the protruding portion (731) and the recessed portion (732) of the clutch switch (73), a transition surface is provided between the protruding portion (731) and the recessed portion (732), and the transition surface is an inclined surface or an arc surface.

2. A trolley that can be switched into a rocking chair, comprising a support frame (1) with a seat frame, a mounting portion (11) for arranging wheels (2) on the support frame, characterized in that: An electric drive mechanism (3) for driving the wheel (2) to rotate back and forth is provided on the support frame (1), the electric drive mechanism (3) comprising a drive motor (31) fixed on the support frame, a rotating member (4) fixedly connected to the output shaft of the drive motor (31), a drive member (5) pivotally connected to the rotating member (4) at a position deviating from its axis, a swing member (6) for driving the wheel to rotate back and forth is pivotally connected to the other end of the drive member (5), the pivot point between the drive member (5) and the swing member (6) deviates from the axis of the swing member, the swing member (6) is pivotally connected to the mounting portion (11), and the function conversion between the rocking chair mode and the trolley mode of the rocking chair or trolley is realized by a clutch device, the clutch device (7) comprising a locking portion (71) fixedly arranged at a relative position to the wheel, and a locking member (71) arranged between the locking portion (71) and the swing member (6). ), the sliding locking core (74) and the swinging member (6) are fixed in relative circumferential position, the sliding locking core (74) is provided with a locking pin (741) or a locking hole (710), the locking portion (71) is provided with a locking hole (710) or a locking pin that cooperates with the locking pin (741) or the locking hole (710) on the sliding locking core (74), the clutch device (7) also includes a return spring that allows the locking pin (741) or the locking hole (710) on the sliding locking core (74) to enter a position that cooperates with the locking hole (710) or the locking pin on the locking portion (71), and a clutch switch (73) that allows the locking pin (741) or the locking hole (710) on the sliding locking core (74) to exit a position that cooperates with the locking hole (710) or the locking pin on the locking portion (71).

3. A trolley that can be switched into a rocking chair according to claim 2, characterized in that The swinging member (6) is provided with a track (61) for the sliding locking core (74) to slide back and forth, and the sliding locking core (74) is provided with a groove (740) or a protrusion that cooperates with the track (61).

4. A trolley that can be switched into a rocking chair according to claim 2, characterized in that The clutch switch (73) and the sliding locking core (74) are pivotally connected to each other. The clutch switch (73) is provided with a protruding portion (731) and a recessed portion (732). The sliding locking core (74) is provided with a protruding portion (731) and a recessed portion (732) that cooperate with the protruding portion (731) and the recessed portion (732) of the clutch switch (73). A transition surface is provided between the protruding portion (731) and the recessed portion (732), and the transition surface is an inclined surface or an arc surface.

5. A trolley that can be switched into a rocking chair, comprising a support frame (1) with a seat frame, a mounting portion (11) for arranging wheels (2) on the support frame, characterized in that: An electric drive mechanism (3) for driving the wheel (2) to rotate back and forth is provided on the support frame (1), the electric drive mechanism (3) comprising a drive motor (31) fixed on the support frame, a rotating member (4) fixedly connected to the output shaft of the drive motor (31), a drive member (5) pivotally connected to the rotating member (4) at a position deviating from the axis thereof, a swing member (6) for driving the wheel to rotate back and forth is pivotally connected to the other end of the drive member (5), a pivot point between the drive member (5) and the swing member (6) deviating from the axis of the swing member, and the swing member (6) is pivotally connected to the rotating member (4) at a position deviating from the axis thereof. On the mounting portion (11), a clutch device is used to realize the functional conversion between the rocking chair mode and the trolley mode of the rocking chair or trolley, wherein the clutch device (7) at least comprises a locking portion (71) for locking the wheel, a clutch switch (73), and a clutch member that can cooperate with or disengage from the locking portion (71) under the control of the clutch switch (73); when the clutch member cooperates with the locking portion (71), the swing member (6) can drive the wheel (2) to rotate back and forth; when the clutch member disengages from the locking portion (71), the wheel (2) can rotate freely;The clutch member is arranged on the swing member (6) and rotates along with the swing member (6); a first installation box (13) is arranged on the support frame (1); a driving motor (31), a rotating member (4), a driving member (5) and a swing member (6) are arranged in the first installation box (13); a portion where the clutch member and a clutch switch (73) cooperate with each other is arranged in the first installation box (13); components in the first installation box (13) and the first installation box (13) can control at least one wheel to rotate back and forth; the first installation box (13) is arranged on a rear support foot (12) of the support frame (1); a second installation box (132) is also arranged on the other rear support foot (12); the second installation box (132) ) is provided with a brake device, the brake device comprises a brake pin (81) matched with the locking portion (71), and a brake driving member (82) for controlling the lateral movement of the brake pin (81), the brake driving member (82) is arranged in the second installation box (132), the matching part between the brake driving member (82) and the brake pin (81) is arranged in the second installation box (132), the second installation box (132) is provided with a hole for the brake pin (81) to extend out, the matching part between the brake pin (81) and the locking portion (71) deviates from the rotation axis of the wheel, the installation shell for installing the battery extends into the second installation box (132), and the first installation box (13) is provided with a hole for the wheel axle to pass through so as to allow The wheel axle extends into the hole (9) in the first installation box (13), the first installation box (13) is also provided with a hole for the clutch member to pass through the first installation box (13), the first installation box (13) is also provided with a hole or a groove (1314) for the clutch switch (73) to extend into the first installation box (13), the first installation box (13) includes a first installation shell body (131), the first installation shell body (131) is provided with a first installation groove (1310), the driving motor (31), the rotating member (4), the driving member (5), and the swinging member (6) are arranged in the first installation groove (1310), and the first installation box (13) also includes a sealing member for closing the first installation The outer cover (1312) of the groove (1310) is provided, the driving motor (31) comprises a reduction gear box (311) and a motor (310), the output shaft of the motor (310) is connected to the input end of the reduction gear box (311), the output end of the reduction gear box (311) serves as the output shaft of the driving motor (31), a second mounting groove (1311) for mounting the driving motor (31) is further provided in the first mounting groove (1310) of the first mounting box (13), the motor (310) and the reduction gear box (311) of the driving motor (31) are provided in the second mounting groove (1311), and a sealing gasket and a sealing cover are provided at the opening of the second mounting groove (1311). ; 6. A trolley convertible into a rocking chair according to claim 5, characterized in that The mating point between the clutch member and the locking portion (71) deviates from the rotation axis of the wheel (2).

7. The trolley convertible into a rocking chair according to claim 5, characterized in that A shock absorbing mechanism (20) is provided on the upper part of the first installation box (13) and the upper part of the second installation box (132), respectively, and the shock absorbing mechanism (20) is connected to the support frame (1).

8. The trolley convertible into a rocking chair according to claim 5, characterized in that The clutch member is a locking pin (72), the swing member (6) is a shell, the locking pin (72) is transversely arranged in the swing member (6) and can move transversely relative to the swing member (6) and extend out of the swing member (6), a return spring (721) is arranged in the swing member (6) to enable the locking pin (72) to move, and the clutch switch (73) extends into the swing member (6) to drive or allow the locking pin (72) to move transversely so that the locking pin (72) is engaged with or disengaged from the locking portion (71).

9. A trolley convertible into a rocking chair according to claim 8, characterized in that The clutch switch (73) is also fixedly provided with a clutch drive member (75) and a return spring (721); the clutch drive member (75) is provided with a mounting cavity (751); the mounting cavity (751) is provided with a matching inclined surface (7511); the locking pin (72) is clamped on the matching inclined surface (7511); and the return spring (721) is provided at one end of the locking pin (72).

10. The trolley convertible into a rocking chair according to claim 5, characterized in that The rotating member (4) and the driving member (5) are in the shape of waist-shaped thin sheets, and their shapes are adapted to the shape of the first installation box (13).

11. A trolley that can be switched into a rocking chair, comprising a support frame (1) with a seat frame, a mounting portion (11) for arranging wheels (2) on the support frame, characterized in that: An electric drive mechanism (3) for driving the wheel (2) to rotate back and forth is provided on the support frame (1), the electric drive mechanism (3) comprising a drive motor (31) fixed on the support frame, a rotating member (4) fixedly connected to the output shaft of the drive motor (31), a drive member (5) pivotally connected to the rotating member (4) at a position deviating from the axis thereof, a swing member (6) for driving the wheel to rotate back and forth is pivotally connected to the other end of the drive member (5), a pivot point between the drive member (5) and the swing member (6) deviating from the axis of the swing member, and the swing member (6) is pivotally connected to the rotating member (4) at a position deviating from the axis thereof. On the mounting portion (11), a clutch device is used to realize the functional conversion between the rocking chair mode and the trolley mode of the rocking chair or trolley, wherein the clutch device (7) at least comprises a locking portion (71) for locking the wheel, a clutch switch (73), and a clutch member that can cooperate with or disengage from the locking portion (71) under the control of the clutch switch (73); when the clutch member cooperates with the locking portion (71), the swing member (6) can drive the wheel (2) to rotate back and forth; when the clutch member disengages from the locking portion (71), the wheel (2) can rotate freely;The clutch member is arranged on the swing member (6) and rotates along with the swing member (6); the mounting box (14) is arranged on a rear support foot (12) of the support frame (1); the drive motor (31), the rotating member (4), the driving member (5) and the swing member (6) are arranged in the mounting box (14); the clutch member and the clutch switch (73) are arranged in the mounting box (14); the components in the mounting box (14) and the mounting box (14) can control at least one wheel to rotate back and forth, and also include a brake device for limiting the rotation of the wheel; The brake device comprises a brake pin (81) matched with the locking portion (71), and a brake driving member (82) for controlling the lateral movement of the brake pin (81); the brake driving member (82) is arranged in the installation box (14); the matching position between the brake driving member (82) and the brake pin (81) is arranged in the installation box (14); the installation box (14) is provided with a hole for the brake pin (81) to extend out; a lateral member (121) which can also serve as the installation portion (11) is connected between the two wheels of the two rear supporting legs (12); the wheel axle is lateral The brake device is pivotally connected to the transverse member (121), and further comprises a brake switch (83). The brake switch (83) is fixedly connected to the transverse member (121) which can also serve as the mounting portion (11). The brake drive member (82) is fixedly connected to the transverse member (121) which can also serve as the mounting portion (11). The brake drive member (82) is provided with a mounting cavity, and the mounting cavity is provided with a matching inclined surface. The brake pin (81) is clamped on the matching inclined surface, and a reset spring is provided at one end of the brake pin (81) close to the brake switch (83). The clutch device (7) at least comprises two locking parts (71) for locking the wheels, a clutch switch (73), and two clutch members that can cooperate with or disengage from the locking parts (71) under the control of the clutch switch (73); when the clutch members cooperate with the locking parts (71), the swing member (6) can drive the wheels (2) to rotate back and forth; when the clutch members disengage from the locking parts (71), the two wheels (2) can rotate freely; the two clutch members are arranged on the swing member (6) and rotate along with the swing member (6).

12. A trolley that can be converted into a rocking chair, comprising a support frame (1) with a seat frame, a mounting portion (11) for mounting wheels (2) on the support frame, characterized in that: An electric drive mechanism (3) for driving the wheel (2) to rotate back and forth is provided on the support frame (1), the electric drive mechanism (3) comprising a drive motor (31) fixed on the support frame, a rotating member (4) fixedly connected to the output shaft of the drive motor (31), a drive member (5) pivotally connected to the rotating member (4) at a position deviating from its axis, a swing member (6) for driving the wheel to rotate back and forth is pivotally connected to the other end of the drive member (5), the pivot point between the drive member (5) and the swing member (6) deviates from the axis of the swing member, the swing member (6) is connected to a mounting rod (122), the mounting rod (122) is connected to the support frame (1), and a rocking chair or a trolley is realized through a clutch device. The invention relates to a rocking chair or a trolley for converting a function between a rocking chair mode and a trolley mode. A transverse member (121) is arranged between two mounting parts (11) of the rocking chair or the trolley. The mounting rod (122) is connected to the transverse member (121). A mounting box (14) is arranged in the middle of the transverse member (121). A driving motor (31), a rotating member (4), a driving member (5) and a swinging member (6) are arranged in the mounting box (14). The mounting box (14) is fixedly connected to the transverse member (121). The transverse member (121) is fixedly connected to the support frame (1) and connected to the mounting part (11). The clutch device (7) comprises a clutch switch (73), a clutch driving member (75) and a locking pin (72). The clutch switch (73), the clutch drive member (75), and the locking pin (72) are partially or completely arranged in an installation space formed by the installation box (14), the installation portion (11), and the transverse member (121); the clutch switch (73) drives the locking pin (72) to move transversely and extend out of or enter the installation space; the clutch switch (73) and the clutch drive member (75) are engaged with each other; the clutch drive member (75) comprises a transmission ring (755) and a transmission bar (756); a matching inclined surface (7551) is provided on the transmission ring (755); the transmission bar (756) is fixedly connected to the transmission ring (755); and the transmission bar (756) is fixedly connected to the locking pin (72). The locking pin (72) is fixedly connected to the transmission bar (756), a return spring (721) is arranged at one end of the locking pin (72) close to the transmission bar (756), the clutch switch (73) is provided with a driving inclined surface (731) for driving the matching inclined surface (7551) to move, the clutch device (7) at least comprises two locking parts (71) for locking the two wheels, the clutch switch (73) and two clutch members that can be matched or disengaged with the locking parts (71) under the control of the clutch switch (73), when the clutch members are matched with the locking parts (71), the swing member (6) can drive the wheel (2) to rotate back and forth; when the clutch members are disengaged from the locking parts (71), the two wheels (2) can rotate freely;The two clutch members are arranged on the swing member (6) and rotate along with the swing member (6), and the matching part between the clutch member and the locking part (71) deviates from the rotation axis of the wheel (2).

13. A trolley convertible into a rocking chair according to claim 12, characterized in that A shock absorbing mechanism (20) is arranged above the mounting portion (11).

14. The trolley convertible into a rocking chair according to claim 12, characterized in that : It also includes a brake device for limiting the rotation of the wheel, the brake device includes a brake switch (83), a brake drive member (82), and a brake pin (81), the brake drive member (82) and the brake pin (81) are arranged in an installation space formed by the installation box (14), the installation portion (11) and the transverse member (121), and the brake switch (83) drives the brake pin (81) to move laterally out of or into the installation space.

15. A trolley convertible into a rocking chair according to claim 14, characterized in that The brake switch (83) is configured to be engaged with the brake drive member (82), and the brake drive member (82) includes a rotating inclined surface (821) and a drive strip (822), and a guide circle is provided at one end of the drive strip (822) that cooperates with the rotating inclined surface (821), and a mounting cavity for the brake pin (81) to move is provided at one end of the drive strip (822) that cooperates with the brake pin (81), and a moving range groove (811) and a strain groove (812) of the drive strip (822) are provided on the peripheral wall of the mounting cavity.

16. The trolley convertible into a rocking chair according to claim 12, characterized in that The installation box (14), the installation portion (11) and the transverse member (121) constitute an installation space; the transverse member (121) is fixed on the support frame (1) and is fixedly connected to the installation portion (11); a mounting position for supporting the installation rod (122) is provided inside the transverse member (121) or the installation box (14); a swinging tube (123) swinging therewith is provided on the swinging member (6); the swinging tube (123) is used for the clutch member to move inside the swinging tube (123); and the swinging tube (123) is arranged in the installation space.

17. A trolley that can be switched into a rocking chair according to claim 16, characterized in that: the clutch member is a locking pin (72), the mounting portion (11) is provided with a hole or a groove for the locking pin (72) to extend into or withdraw from, so as to lock or separate from the locking portion (71), and the clutch switch (73) is connected to the mounting rod (122).

18. A trolley convertible into a rocking chair according to claim 17, characterized in that The transmission ring (755) is sleeved on the swing tube (123) and can move laterally a certain distance relative to the swing tube (123); the transmission bar (756) is arranged in the swing tube (123) and can move laterally a certain distance relative to the swing tube (123).

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