TWI635012B - Link set for preventing swinging and locking device with two front wheel carriers - Google Patents

Abstract

The invention relates to a connecting rod set for preventing swinging and locking device with two front wheel carriers, which is controlled by a supporting rod of a carrier, the connecting rod set comprises a connecting rod unit, a locking device and a connecting rod The unit is driven by the locked plate, and the locking device is located above the front side of the connecting rod unit. The locking device adopts a pushing assembly controlled by the supporting rod and can generate axial movement, and pushes a movable plate to yaw and lock the driven member through the pushing assembly. The locking plate and the interlocking rod group are locked. Since the locking device and the locked plate are installed in an additional form, and the locking device is located above the front side of the connecting rod unit, the installation convenience and the occupied space can be improved, and the utility model can be applied to different The form has two front wheel carriers, and the locking structure is achieved by a compact structure, and the action path can be shortened to improve the reaction speed.

Description

Link set for preventing rocking and locking device with two front wheel carriers

The present invention is a linkage set, and more particularly a linkage set provided on a carrier having two front wheels and having a locking mechanism.

For example, in the national patent No. 094102972, the anti-sway device for a vehicle discloses a link set which is disposed on a vehicle having two front wheels, the link set including a link unit and an anti-sway device. The link unit is disposed on a vehicle having two front wheels, and the link unit has a parallelogram shape. The anti-sway device is disposed on a vehicle having two front wheels for locking the link unit, and the anti-sway device includes at least one stop. An element, at least one locking component, and a parking group, the stopping component is co-operating on a control shaft of the connecting rod unit, the control shaft connecting the faucet rod of the vehicle and the upper control arm of the connecting rod unit, And the stopping element is located between the faucet rod and the connecting rod unit, the locking element is disposed on the faucet rod of the vehicle and located above the stopping element, and the stopping element protrudes into the locking element The locking member is configured to position the stopping member, the parking group is disposed on the faucet rod and guided to control the locking member, the parking group is located at a lower rear of the connecting rod unit, wherein stop Group comprises a brake that acts to brake a pump is connected to a hydraulic system of a worm screw, which locks the hydraulic system control element.

During operation, the operator can control the parking group to control the locking component through the parking group, cause the locking component to actuate and position the stopping component, and the linkage component is positioned while the stopping component is positioned The control shaft is also positioned to be unable to rotate, and the link unit is positioned by controlling the positioning of the shaft to prevent the movement of the link unit and prevent the vehicle from swinging.

However, in the above link group, the anti-sway device has the following problems: 1. Inconvenient installation: the stop element is disposed on the control shaft and is located between the faucet rod and the link unit, so the link unit cannot be installed. In the upper case, the stopping element is installed. Therefore, when the anti-sway device is installed in the vehicle, the link unit needs to be removed to install the stopping element on the control shaft, and the connecting rod unit is installed after the component is to be stopped. Therefore, the installation is quite inconvenient and time consuming. 2. Space: the stop element is located between the faucet rod and the link unit, so there is a need to provide sufficient space between the link unit and the faucet rod to accommodate the stop element, resulting in a link between the link unit and the faucet rod. The increase in distance leads to the problem of occupying an increase in space, and the parking group is located in the lower rear of the link unit, which also takes up considerable space. In addition, the problem of space also affects the configuration of other components of the vehicle and the design of the vehicle body. . 3. The structure is complicated: the anti-sway device comprises a stopping element, a locking element and a parking group, and the locking device is driven by a hydraulic system that controls the parking group, and then the stopping element is locked by a locking element, wherein the parking group The composition of the components is large, so the structure is quite complicated. 4. The action response is not fast: during the operation, the operator controls the parking group located at the lower rear through the control rod provided at the handle, and then the parking group drives the locking component located in front of the parking group to position the locking component. The stopping element has a whole action path from the upper supporting rod to the rear lower parking group, and then to the locking component at the middle part of the leading rod, and the action path is tortuous and long, which causes the action to take a long time, so the prevention occurs. The motion response of the rocking device is not fast.

The main object of the present invention is to provide a link set for preventing swinging and locking device with two front wheel carriers, thereby improving the installation of the anti-sway device of the existing link set, which is inconvenient, occupying space, complicated structure and action response. Not a quick question.

In order to achieve the foregoing object, the present invention is applied to a swing preventing and locking device set with two front wheel carriers, which is disposed on a carrier having two front wheels and controlled by a supporting rod of the carrier. The link group for preventing swinging and locking device with two front wheel carriers comprises: a link unit which is disposed on the front side of the carrier and located on the leading pole of the carrier; and a locking device attached to the carrier The faucet rod is located above the front side of the connecting rod unit, the locking device comprises a base, the base is provided with a supporting shaft, and a fixing plate, a yawable movable plate and a resetting member are disposed on the supporting shaft The fixing plate is adjacent to the rear end of the supporting shaft, the movable plate faces the fixing plate, the resetting member is connected to the movable plate, and the locking device is provided with a pushing component on the base, and the pushing component is connected and controlled Having a dominating rod that converts a rotational motion generated by the control of the rod to an axial movement to selectively urge the movable plate to yaw toward the fixed plate; and a locked plate that is co-operating For the link unit, the When the locking between the locking plate extending into the plate fixing means movable plate, the movable plate means in the locking plate towards the stationary yaw, the movable plate is pressed against the locking plate is locked position.

The above-mentioned link group for preventing rocking and locking device with two front wheel carriers, the pushing assembly comprising a rotating unit, a tension spring and an axial moving unit, the rotating unit is rotatably provided The rotating unit has an externally threaded portion, and the two ends of the tensioning spring are respectively connected to the rotating unit and the base, and the axially moving unit is axially movably sleeved on the rotating unit and Located in the base, and the axial movement unit has an internal thread portion that meshes with the external thread portion of the rotation unit, and a rear end surface of the axial movement unit faces the movable plate, wherein the rotation The unit includes a shaft, an inner sleeve, a positioning sleeve and a driving piece, the shaft is disposed on the base, and a front end of the shaft extends from the base, and a rear end of the shaft extends into the base And facing the movable plate, the inner sleeve is sleeved on the shaft and extends into the base, the external threaded portion is formed on an outer circumferential surface of the inner sleeve, and the positioning sleeve is sleeved on the inner sleeve And fastening the base and the inner sleeve, and the driving piece is sleeved in the same manner The inner sleeve and exposed to the base, a tension spring connected to the drive plate.

The above-mentioned link group for preventing swinging and locking device with two front wheel carriers, the axial movement unit comprising an outer sleeve, a locking sleeve and a disc spring, the outer sleeve The inner threaded portion is axially movably sleeved on the inner circumferential surface of the outer sleeve, and the locking sleeve is sleeved on the shaft, and the front end surface of the locking sleeve abuts the outer sleeve a sleeve having a rear end surface facing the movable plate, the disc spring being sleeved on the shaft and abutting the locking sleeve.

The link group for preventing swinging and locking device with two front wheel carriers as described above, the link unit comprises an upper control arm, two lower control arms and two side bars, wherein the upper control arm is pivoted a faucet rod of the vehicle, the upper control arm has a first upper pivot point and two second upper pivot points, the first upper pivot point is located at a pivotal connection between the upper control arm and the faucet rod, the second The second upper pivot joint is located at two sides of the first upper pivot joint, the two lower control arms are located below the upper control arm and are pivoted on the faucet rod of the carrier, and each lower control arm has a first lower pivot a contact point and a second lower pivot point, the first lower pivot point is located at a pivotal connection between the lower control arm and the faucet rod, and the two ends of the two side rods are respectively pivotally connected to the upper control arm and the corresponding lower a control arm, the two ends of the two side bars are respectively connected to the corresponding second upper pivot point and the corresponding second lower pivot point, and wherein the second upper pivot point and the bottom center of the carrier corresponding to the front wheel The angle between the point connection and the lead line is 0° to 3°, wherein the distance between the second and second upper pivot points is smaller than the second and second lower pivot points Distance, and the two second upper pivot pin and the pivot point connecting the second lower two form a narrow width of the upper trapezoid.

In the above, the supporting rod at the handle of the carrier is connected to the locking device of the connecting rod group through a steel cable. When the user wants to lock the connecting rod unit, the supporting rod can be controlled to drive the steel cable, and the pushing component of the locking device is pulled through the steel cable. Causing the pusher assembly to move axially and push the movable plate such that the movable plate is biased to press and lock the locked plate such that the position of the locked plate is fixed, thereby locking the same as the locked plate Link unit.

According to the above, the locking device of the connecting rod set is attached to the faucet rod of the carrier and is located above the front side of the connecting rod unit. The locking device adopts an additional form of mounting, so that the connecting rod unit does not need to be removed during installation, so The installation is convenient, and the link set adopts the combination of the locking device and the locked plate. Compared with the existing anti-sway device, the stop device, the locking element and the parking group are matched, and the structure of the locking device and the locked plate is effective. The simplification and the additional form of the installation can reduce the occupied space without affecting the configuration in the vehicle, and thus can be applied to two front wheel carriers of different forms, so the applicability is good, and the locking device is located at the connection. Above the front side of the rod unit, the locked plate is disposed on the connecting rod unit, and the moving path is from the supporting rod to the locking device, thereby greatly shortening the movement path and improving the reaction speed. Further, the connecting rod group passes through the locking device and The locked plate can achieve the purpose of no segment locking.

Referring to FIG. 1 and FIG. 8 , a preferred embodiment of a link set for preventing swinging and locking devices with two front wheel carriers is provided on a carrier having two front wheels, and is controlled by The support rod 60 of the carrier includes a link unit 30, a locking device 10 and a locked plate 20.

As shown in FIG. 1 , the link unit 30 is disposed on the front side of the faucet rod 50 of the carrier, wherein the link unit 30 includes an upper control arm 31 , two lower control arms 32 , and two side bars 33 . The upper control arm 31 is pivotally disposed on the faucet rod 50 of the carrier. The upper control arm 31 has a first upper pivot point 311 and two second upper pivot points 312. The first upper pivot point 311 is located. The pivotal connection between the upper control arm 31 and the faucet rod 50 is located at two sides of the first upper pivot point 311, and the two lower control arms 32 are located below the upper control arm 31. And the lower control arm 32 has a first lower pivot point 321 and a second lower pivot point 322. The first lower pivot point 321 is located at the lower control arm 32. Two ends of the two side bars 33 are respectively pivotally connected to the upper control arm 31 and the corresponding lower control arm 32, and the two ends of the two side bars 33 are respectively connected to the corresponding second upper pivots. The contact point 312 and the corresponding second lower pivot point 322, wherein a second upper pivot point 312 and a corresponding center of the front wheel (not shown) of the carrier are connected with a lead line The distance between the two second upper pivot joints 312 is smaller than the distance between the two second lower pivot joints 322, and the two second upper pivot joints 312 and the two second lower pivots The contact 322 is connected in a trapezoidal shape with a narrow upper and a lower width.

As shown in FIG. 2 to FIG. 4 and FIG. 8 , the locking device 10 is attached to the faucet rod 50 of the carrier and located above the front side of the link unit 30. The locking device 10 includes a base 11 on which a base 11 is disposed. The support shaft 111 is provided with a fixing plate 112, a deflectable movable plate 113 and a resetting member 114. The fixing plate 112 is adjacent to the rear end of the supporting shaft 111, and the movable plate 113 faces the a fixing plate 112, the resetting member 114 is connected to the movable plate 113, and the locking device 10 is provided with a pushing assembly 12 on the base 11, and the pushing assembly 12 is connected and controlled by the supporting rod 60 at the handle of the carrier, and The rotational motion generated by the control of the lever 60 is converted into an axial movement to selectively urge the movable plate 113 to yaw toward the fixed plate 112.

The locked plate 20 is disposed in the same manner on the link unit 30. The locked plate 20 extends between the fixing plate 112 of the locking device 10 and the movable plate 113, and the movable plate 113 of the locking device 10 is fixed toward the fixed plate 113. When the plate 112 is yawed, the movable plate 113 is pressed against the position at which the locked plate 20 is locked.

As shown in FIG. 5 to FIG. 8 , the pushing unit 12 includes a rotating unit 13 , a tension spring 14 and an axial moving unit 15 . The rotating unit 13 is rotatably disposed on the base 11 , and the rotating unit 13 An external thread portion 131 is provided. The two ends of the tension spring 14 are respectively connected to the rotating unit 13 and the base 11. The axial moving unit 15 is axially movably sleeved on the rotating unit 13 and located at the base. In the seat 11, the axial movement unit 15 has an internal thread portion 151 that meshes with the external thread portion 131 of the rotation unit 13, and a rear end surface of the axial movement unit 15 faces the movable plate 113. .

The rotating unit 13 includes a shaft 132, an inner sleeve 133, a positioning sleeve 134 and a driving piece 135. The shaft 132 is disposed on the base 11, and the front end of the shaft 132 extends from the base. The rear end of the shaft 132 extends into the base 11 and faces the movable plate 113. The inner sleeve 133 is sleeved on the shaft 132 and extends into the base 11. The external thread portion 131 is formed. On the outer circumferential surface of the inner sleeve 133, the positioning sleeve 134 is sleeved on the inner sleeve 133 and the base 11 and the inner sleeve 133 are buckled. The transmission piece 135 is sleeved in the same manner. The sleeve 133 is exposed to the base 11, and the tension spring 14 is connected to the transmission piece 135. The transmission piece 135 has a zigzag assembly hole, and the front end of the inner sleeve 133 forms a non-circular shape. a set of joints that extend into the set of holes and engage the drive piece 135.

As shown in FIG. 5 to FIG. 8 , the axial movement unit 15 includes an outer sleeve 152 , a locking sleeve 153 and a disc spring 154 . The outer sleeve 152 is axially movably sleeved on the rotating unit 13 . The inner sleeve portion 133 is formed on the inner circumferential surface of the outer sleeve 152. The locking sleeve 153 is sleeved on the shaft 132 of the rotating unit 13, and the front end surface of the locking sleeve 153 is abutted. The outer sleeve 152 is disposed, and the rear end surface of the locking sleeve 153 faces the movable plate 113. The disc spring 154 is sleeved on the shaft 132 of the rotating unit 13 and abuts the locking sleeve 153.

As shown in FIG. 1 and FIG. 2, the locking device 10 includes a support frame 16 that connects the base 11 and the faucet rod 50 of the carrier. As shown in FIG. 7, the base 11 is provided with a support member. The auxiliary shaft 115 is spaced apart from the support shaft 111. The auxiliary shaft 115 is coupled to the movable plate 113 and can improve the stability of the movable plate 113.

As shown in FIG. 1 and FIG. 3, the locking device 10 and the locked plate 20 of the link set adopt an additional mounting means, that is, the locked plate 20 of the link set is additionally attached to the upper portion of the front side of the link unit 30. The locking device 10 of the linkage assembly is additionally mounted on the faucet rod 50 of the carrier, the locking device 10 being located above the front side of the linkage unit 30, rather than between the linkage unit 30 and the faucet rod 50 of the carrier. Therefore, the locking device 10 does not need to be removed from the connecting rod unit 30 when the connecting rod assembly is installed. After the connecting rod set is installed, the supporting rod 60 is connected to the locking device 10 of the connecting rod set through a cable 40, two of the cable 40 The end of the support rod 60 and the drive piece 135 of the locking device 10 are respectively connected.

As shown in FIG. 1 , FIG. 6 and FIG. 7 , when the user wants to lock the link unit 30 of the carrier, the user can control the support rod 60 to pull the cable 40 , and the cable 40 pulls the transmission piece 135 to rotate. The driving piece 135 drives the inner sleeve 133 to rotate in place, and the external thread portion 131 of the inner sleeve 133 is engaged with the female thread portion 151 of the outer sleeve 152, so that the externally threaded external thread portion 131 can be The outer sleeve 152 is axially moved by the internal thread portion 151, and the axially moving outer sleeve 152 further pushes the positioning sleeve 134 toward the movable plate 113, and the positioning sleeve 134 further pushes the movable plate 113 to yaw. The movable plate 113 is pressed down and locked to the locked plate 20, so that the locking device 10 can securely fix the position of the locked plate 20. Since the position of the locked plate 20 is fixed, the same as the locked plate 20 is moved. The link unit 30 is also fixed together to achieve the purpose of locking the link unit 30. In addition, when the lock is released, the cable 40 stops pulling the drive piece 135, and the drive piece 135 is reset by the tension spring 14, and simultaneously The inner sleeve 133, the outer sleeve 152 are reset, and the disc Spring 154 drives the locking sleeve 153 is reset, and then reset the support member on shaft 111 114 drive the movable plate 113 is reset, thereby releasing the locking plate 20 is locked and unlocked link unit 30.

In summary, the link set with two front wheel carriers has the following advantages: 1. Installation convenience: the locked plate 20 of the link set is disposed at an upper portion of the front side of the link unit 30, and the link set The locking device 10 is disposed on the faucet rod 50 and located above the front side of the link unit 30. Therefore, the link group adopts an additional form of mounting, so that it is not necessary to remove the link unit 30 during installation, and the carrier is subjected to The number of components affected is small, so the installation is convenient and fast. 2. Reducing the occupied space: the locking device 10 is located above the front side of the link unit 30, rather than between the link unit 30 and the faucet rod 50 of the carrier, so between the link unit 30 and the faucet rod 50 The device does not need to be enlarged to provide accommodation, so the locking device 10 can reduce the space occupied. 3. Simplified structure: the link set adopts the matching of the locking device 10 and the locked plate 20, and the locking device 10 converts the moving direction through the pushing assembly 12 to smoothly move axially and push the movable plate 113 to lock the locked plate. 20, and when the lock is released, the movable plate 113 is reset by the reset member 114, so the structure of the link set is effectively simplified. 4. The action response is fast: the locked plate 20 is disposed on the link unit 30, and the locking device 10 is located above the front side of the link unit 30, that is, the locking device 10 is located at the middle portion of the front side of the carrier, and in addition, the locking is controlled. The control rod 60 in which the device 10 operates is located at the upper portion of the front side of the carrier, so that the action path from the control rod 60 to the locking device 10 is greatly shortened, so that the action of the locking device 10 is fast. 5. Applicability is good: the connecting rod group adopts an additional form of installation, so the influence on the existing components and configuration of the carrier is small during the installation, so that the carrier does not need to be changed too much, so the connecting rod group can Applicable to different forms of two front wheel carriers, so the applicability is good. 6. No-segment locking: the connecting rod group cooperates with the locked plate through the locking device, so that the locking device can lock the locked plate in a stepless locking manner. 7. The operation stability is improved: the distance between the two second upper pivot points 312 is smaller than the distance between the two second lower pivot points 322, so that the wheel fronts of the two front wheels can be increased without changing the frame. Increases driving stability and improves operational stability. 8. The stability is good: the second upper pivotal joint 312 and the second lower pivotal joint 322 are connected in a trapezoidal shape with a narrow upper and a lower width, that is, the two lateral rods 33 are inclined outwardly to provide Appropriate internal inclination and increase the stability of driving.

10‧‧‧Locking device
11‧‧‧Base
111‧‧‧Support shaft
112‧‧‧ fixed board
113‧‧‧ activity board
114‧‧‧Reset parts
115‧‧‧Auxiliary shaft
12‧‧‧Promoting components
13‧‧‧Rotating unit
131‧‧‧External thread
132‧‧‧ shaft
133‧‧‧Inner sleeve
134‧‧‧ Positioning sleeve
135‧‧‧ drive piece
14‧‧‧ stretching spring
15‧‧‧Axial mobile unit
151‧‧‧Threaded Department
152‧‧‧Outer sleeve
153‧‧‧Locking sleeve
154‧‧‧ disc spring
16‧‧‧Support frame
20‧‧‧Locked board
30‧‧‧ linkage unit
31‧‧‧Upper control arm
311‧‧‧The first upper pivot joint
312‧‧‧Second upper pivot joint
32‧‧‧ Lower control arm
321‧‧‧The first lower pivot joint
322‧‧‧Second lower pivot joint
33‧‧‧ sidebar
40‧‧‧Steel cable
50‧‧‧ Leading rod
60‧‧‧ Dominating rod

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a front plan view showing a preferred embodiment of a link set for preventing rocking and locking device with two front wheel carriers. 2 is a partial front perspective view of a preferred embodiment of a link set for preventing rocking and locking device with two front wheel carriers. 3 is a partial front perspective exploded view of a preferred embodiment of a link set for preventing rocking and locking device with two front wheel carriers. 4 is a partial rear perspective exploded view of a preferred embodiment of a link set for preventing rocking and locking device with two front wheel carriers. Fig. 5 is a partial front plan view showing a preferred embodiment of a link set for preventing rocking and locking device with two front wheel carriers. Fig. 6 is a schematic cross-sectional view taken along line A-A of Fig. 5. Figure 7 is a partial enlarged view of Figure 6. Fig. 8 is a schematic cross-sectional view taken along line B-B of Fig. 5.

Claims (10)

A connecting rod set for preventing swinging with two front wheel carriers, which is provided on a carrier with two front wheels and controlled by a supporting rod of the carrier, which is used for two front wheel carriers The link group for preventing rocking and locking device comprises: a link unit which is disposed on the front side of the faucet rod of the carrier and a locking device attached to the faucet rod of the carrier and located at the link unit Above the front side, the locking device comprises a base, a support shaft is disposed on the base, and a fixing plate, a deflectable movable plate and a resetting member are disposed on the supporting shaft, and the fixing plate is adjacent to the supporting plate a rear end of the shaft facing the fixed plate, the resetting member is connected to the movable plate, the locking device is provided with a pushing component on the base, and the pushing component is connected and controlled by the supporting rod of the carrier, and a rotation action controlled by the control rod is converted into an axial movement to selectively urge the movable plate to yaw toward the fixed plate; and a locked plate is provided in the link unit in a same manner, the The locking plate extends into the fixing plate of the locking device Between the movable plate, the movable plate in the locking device toward the fixing plate upon deflection, the movable plate is pressed against the locking plate is locked position. The link group for preventing rocking and locking device with two front wheel carriers according to claim 1, wherein the pushing assembly comprises a rotating unit, a tension spring and an axial moving unit, the rotating unit The rotation unit is rotatably disposed on the base, and the rotation unit has an external thread portion, and the two ends of the tension spring are respectively connected to the rotation unit and the base, and the axial movement unit is axially movably sleeved And the rotating unit is located in the base, and the axial moving unit has an internal thread portion that meshes with the external thread portion of the rotating unit, and a rear end surface of the axial moving unit faces the movable plate . The link set for preventing rocking and locking device with two front wheel carriers according to claim 2, wherein the rotating unit comprises a shaft, an inner sleeve, a positioning sleeve and a transmission piece, the shaft a rod is disposed on the base, and a front end of the shaft extends from the base, a rear end of the shaft extends into the base and faces the movable plate, and the inner sleeve is sleeved on the shaft and extends into the rod The pedestal, the externally threaded portion is formed on an outer circumferential surface of the inner sleeve, the positioning sleeve is sleeved on the inner sleeve and the base and the inner sleeve are buckled, and the transmission piece is coupled with the sleeve The inner sleeve is disposed on the base and exposed to the base, and the tension spring is coupled to the transmission piece. The link set for preventing rocking and locking device with two front wheel carriers according to claim 2, wherein the axial moving unit comprises an outer sleeve, a locking sleeve and a disc spring, The outer sleeve is axially movably sleeved on the rotating unit, and the internal threaded portion is formed on the inner end surface of the outer sleeve, and the locking sleeve is sleeved on the rotating unit, and the front end surface of the locking sleeve is abutted The outer sleeve is connected to the rear end surface of the locking sleeve facing the movable plate, and the disc spring is sleeved on the rotating unit and abuts the locking sleeve. The link set for preventing rocking and locking device with two front wheel carriers according to claim 3, wherein the axial moving unit comprises an outer sleeve, a locking sleeve and a disc spring, An outer sleeve is axially movably sleeved on the inner sleeve, the inner threaded portion is formed on an inner circumferential surface of the outer sleeve, and the locking sleeve is sleeved on the shaft, and the front end of the locking sleeve The outer sleeve is abutted against the outer sleeve, and the rear end surface of the locking sleeve faces the movable plate, and the disc spring is sleeved on the shaft and abuts the locking sleeve. The link group for preventing rocking and locking device with two front wheel carriers according to any one of claims 1 to 5, wherein the locking device comprises a support frame, the support frame connecting the base and the base The leading pole of the vehicle. The link group for preventing rocking and locking device with two front wheel carriers according to any one of claims 1 to 5, wherein the link unit comprises an upper control arm, two lower control arms and two a side lever, the upper control arm is pivotally disposed on the faucet rod of the carrier, the upper control arm has a first upper pivot joint and two second upper pivot joints, and the first upper pivot joint is located at the upper control arm a pivotal connection with the faucet rod, the two second upper pivot joints are located at two sides of the first upper pivot joint, and the two lower control arms are located below the upper control arm and pivoted to the faucet rod of the carrier Each lower control arm has a first lower pivot point and a second lower pivot point, and the first lower pivot point is located at a pivotal connection between the lower control arm and the faucet rod, and both ends of the two side rods The upper control arm and the corresponding lower control arm are respectively pivotally connected, and the two ends of the two side rods are respectively connected with the corresponding second upper pivot point and the corresponding second lower pivot point, wherein one of the second upper pivotal links The angle between the point and the center point of the bottom wheel corresponding to the front wheel of the vehicle and the lead line is 0° to 3°. The link set for preventing rocking and locking device with two front wheel carriers according to claim 6, wherein the link unit comprises an upper control arm, two lower control arms and two side bars, the upper control The arm is pivotally disposed on the faucet rod of the carrier, the upper control arm has a first upper pivot joint and two second upper pivot joints, and the first upper pivot joint is located at a pivot of the upper control arm and the faucet rod The second upper pivotal joint is located at two sides of the first upper pivotal joint, and the two lower control arms are located below the upper control arm and are pivotally disposed on the leading pole of the carrier, and each lower control arm has a first lower pivot point and a second lower pivot point, the first lower pivot point is located at a pivotal connection between the lower control arm and the faucet rod, and the two ends of the two side rods are respectively pivotally connected to the upper control The arm and the corresponding lower control arm, the two ends of the two side rods are respectively connected with the corresponding second upper pivot point and the corresponding second lower pivot point, wherein one of the second upper pivot points and the corresponding one of the carriers The angle between the center point of the front wheel and the lead line is 0° to 3°. The link group for preventing rocking and locking device with two front wheel carriers according to claim 7, wherein the distance between the two second upper pivot points is smaller than the distance between the two second lower pivot points, And the two second upper pivot joints and the second lower pivot joints are in a trapezoidal shape with a narrow upper and a lower width. The link group for preventing rocking and locking device with two front wheel carriers according to claim 8, wherein the distance between the two second upper pivot points is smaller than the distance between the two second lower pivot points, And the two second upper pivot joints and the second lower pivot joints are in a trapezoidal shape with a narrow upper and a lower width.