Shock-absorbing frame and electric unicycle

Abstract

The invention discloses a shock-absorbing frame, comprising a wheel frame, a support rod, an elastic member and a plurality of connecting rods. When a vehicle body travels on an uneven road surface, the wheels are in a vibrating state. Since the elastic member is arranged between any two parts of the connecting rod mechanism except between the wheel frame and the support rod, the elastic member and the parts for arranging and installing the elastic member are transferred to the outside of the space area between the wheel frame and the support rod, the wheel frame / support rod structure size is reduced, and the structure occupied space between the wheel frame and the support rod is reduced, so that the use / expansion space can be provided for other parts or functions on the vehicle body, thereby making the overall structure of the vehicle body more concise and compact.

Description

Technical Field

[0001] The invention relates to a shock-absorbing frame and an electric unicycle. Background Art

[0002] The frame is used to bear the weight of the vehicle body. In the existing frame, the wheels are assembled and connected to the vehicle body through the frame and the support rods. In order to achieve the shock-absorbing effect, a shock absorber is often arranged between the frame and the support rod. Since an installation space needs to be set between the frame and the support rod for installing the shock absorber and the components for connecting the shock absorber, this often increases the width of the vehicle body, which makes the existing frame not meet the requirements of the vehicle body with compact space structure (for example, lightweight electric bicycles and electric unicycles have the requirement of light and thin body width). It can be seen that since an installation space needs to be set between the existing frame and the support rod for installing the shock absorber and the components for connecting the shock absorber, the width of the vehicle body is increased, which limits the use / expansion space of other components or functions on the vehicle body. Summary of the invention

[0003] According to one aspect of the present invention, a shock-absorbing frame is provided, which includes: a wheel frame, a support rod, an elastic member and a plurality of connecting rods; the support rod is slidably arranged on the wheel frame; at least one connecting rod is pivotally connected to the support rod; at least one connecting rod is pivotally connected to the wheel frame; the wheel frame, the support rod and the plurality of connecting rods together constitute a connecting rod mechanism, in which the wheel frame is arranged as a fixed member, the support rod is arranged as an active member, and the plurality of connecting rods are arranged as driven members; the elastic member is arranged between any two components in the connecting rod mechanism except between the wheel frame and the support rod; and the degree of freedom of the connecting rod mechanism is equal to 1.

[0004] During manufacturing and assembly, the wheels of the vehicle body are mounted on the wheel frame of the shock-absorbing frame, and the load-bearing part of the vehicle body is mounted on the support rod of the shock-absorbing frame; when the vehicle body is traveling on an uneven road surface, the wheels are in a vibrating state and transmit the vibration state to the wheel frame. Since the support rod is slidably arranged on the wheel frame, relative sliding will occur between the support rod and the wheel frame at this time (that is, it can be understood that the wheel frame is relatively fixed and the support rod extends or contracts on the wheel frame). Since the wheel frame, the support rod and a plurality of connecting rods together constitute a connecting rod mechanism with a degree of freedom equal to 1, in the connecting rod mechanism, the wheel frame is set as a fixed component, the support rod is set as an active component, and the plurality of connecting rods are all set as driven components; since the degree of freedom of the connecting rod mechanism is 1, when the support rod moves horizontally on the wheel frame along the sliding direction, the plurality of connecting rods in the connecting rod mechanism can only generate movement (such as translation or plane rotation) from the initial position within a space with a degree of freedom of 1. At the same time, since the elastic member is arranged in the connecting rod mechanism Between any two components other than between the wheel frame and the support rod (for example, the elastic component is arranged between the connecting rod and the connecting rod / between the connecting rod and the wheel frame / between the connecting rod and the support rod), the elastic component will produce elastic deformation from the initial state, absorb impact vibration, reduce the vibration amplitude of the vehicle body, and generate accumulated force to restore the initial state. When the vehicle body leaves the uneven road surface, the accumulated force drives the entire connecting rod mechanism to return to its original state, that is, the support rod and the wheel frame return to their initial relative positions. In addition, since the elastic component is arranged between any two components other than between the wheel frame and the support rod in the connecting rod mechanism (that is, the elastic component is not arranged between the wheel frame and the support rod), the elastic component and the component used to set and install the elastic component are transferred outside the space area between the wheel frame and the support rod, the structural size of the wheel frame / support rod is reduced, and the structural space occupied by the wheel frame and the support rod is reduced, which can provide use / expansion space for other components or functions on the vehicle body, thereby making the overall structure of the vehicle body more simple and compact.

[0005] In some embodiments, the elastic member is disposed between any two connecting rods.

[0006] In this way, by further limiting the setting position of the elastic member to between any two connecting rods (that is, the elastic member is not connected to any of the wheel frame and the support rod), the elastic member and the components used to set and install the elastic member are further transferred to components outside the wheel frame and the support rod, thereby further reducing the structural space occupied by the wheel frame and the support rod.

[0007] In some embodiments, the connecting rod mechanism includes a first connecting rod and a second connecting rod; the support rod, the first connecting rod, the second connecting rod, and the wheel frame are pivotally connected in sequence; and the elastic member is disposed between the first connecting rod and the second connecting rod.

[0008] In this way, since the support rod is slidably arranged on the wheel frame along the sliding direction, there is a low-pair constraint between the support rod and the wheel frame, and since the pivot connection method is also a low-pair constraint, then in this linkage mechanism, there are specifically 3 movable components, 4 low-pair constraints, and 0 high-pair constraints, then the degree of freedom of this linkage mechanism = 3*3-2*4-0=1, that is, the wheel frame, the support rod and multiple links form a linkage mechanism with a degree of freedom = 1. In other embodiments, the specific number of links, and the matching methods between the links and between the links and the support rod / wheel frame can also be adjusted according to the actual situation, that is, as long as it can form a linkage mechanism with a degree of freedom = 1.

[0009] In some embodiments, a wheel mounting portion is provided on the wheel frame; and the second connecting rod is pivotally connected to a position of the wheel frame away from the wheel mounting portion.

[0010] In this way, by pivotally connecting the second connecting rod to a position on the wheel frame away from the wheel mounting portion, a wider use / expansion space can be provided for the space near the wheel on the vehicle body on which the shock-absorbing frame is installed.

[0011] In some embodiments, the second connecting rod includes a first section and a second section, the first section is bent and extended relative to the second section in a direction away from the wheel mounting portion, and the second section is pivotally connected to a position on the wheel frame away from the wheel mounting portion; the connection between the elastic member and the first connecting rod is a first point, the connection between the first section and the second section is a second point, the second point is offset in a direction away from the first point, and the connection between the elastic member and the second connecting rod is set at the second point.

[0012] In this way, by limiting the second connecting rod to include a first section and a second section, the first section is bent and extended relative to the second section in a direction away from the wheel mounting portion, and the second section is pivotally connected to a position on the wheel frame away from the wheel mounting portion, the second connecting rod is pivotally connected to a position on the wheel frame away from the wheel mounting portion; at the same time, since the connection between the elastic member and the first connecting rod is the first point, the connection between the first section and the second section is the second point, and the connection between the elastic member and the second connecting rod is arranged at the second point, by offsetting the second point in a direction away from the first point, the distance between the first point and the second point is increased, that is, an elastic member with a larger elastic deformation amplitude can be connected between the first point and the second point, thereby increasing the shock absorbing stroke of the shock absorbing frame.

[0013] In some embodiments, a bearing component is further included, and the bearing component is disposed on the support rod.

[0014] In this way, by arranging the bearing component on the support rod, the support rod plays the function of load bearing.

[0015] In some embodiments, the bearing component is a standing pedal; a through sleeve is provided on the wheel frame, and the support rod is sleeved in the through sleeve; the connecting rod is pivotally connected to one end of the support rod, and the standing pedal is provided on the other end of the support rod.

[0016] In this way, by setting the load-bearing component as a standing pedal that is convenient for the user to stand (for example, in usage scenarios such as standing balance patrol cars, electric bicycles, unicycles, etc.), a standing space is provided for the user; in addition, by providing sleeves at both ends of the wheel frame that penetrate each other, the support rod is sleeved in the through sleeve, and the connecting rod and the standing pedal are respectively arranged on the two ends of the support rod, so that the connecting rod is arranged away from the standing pedal, thereby avoiding the connecting rod from rotating and scraping the user's legs during shock absorption and buffering, thereby improving the safety performance of the shock-absorbing frame.

[0017] In some embodiments, two sets of connecting rod mechanisms are included, the two sets of connecting rod mechanisms are arranged opposite to each other, and a wheel installation space is provided between the two sets of connecting rod mechanisms.

[0018] In this way, by arranging the two sets of connecting rod mechanisms relatively, the wheels can be installed in the wheel installation space between the two sets of connecting rod mechanisms during assembly, so that the center of gravity of the shock-absorbing frame coincides with the wheel in the direction of gravity, making the vehicle body equipped with the shock-absorbing frame more stable when driving.

[0019] In some embodiments, the two sets of link mechanisms are symmetrically arranged with respect to the wheel installation space; an intermediate pivot member is also included; and the first links in the two sets of link mechanisms are both pivotally arranged on the support rod via the intermediate pivot member.

[0020] In this way, by arranging the two sets of connecting rod mechanisms symmetrically about the wheel installation space, and connecting the first connecting rods in the two sets of connecting rod mechanisms together to the intermediate pivot member pivotally arranged on the support rod, the two sets of connecting rod mechanisms move synchronously and consistently during the buffering and shock absorbing operation, thereby further enhancing the stability performance of the shock absorbing frame.

[0021] In some embodiments, the elastic member includes a telescopic rod, a spring and a cylinder, the telescopic rod is sleeved in the cylinder, and the spring is arranged between the telescopic rod and the cylinder; it also includes a first rotating shaft and a second rotating shaft; the telescopic rod is pivotally connected to the first connecting rod in the two sets of connecting rod mechanisms through the first rotating shaft; the cylinder is pivotally connected to the second connecting rod in the two sets of connecting rod mechanisms through the second rotating shaft.

[0022] In this way, when the shock-absorbing frame performs shock-absorbing and buffering work, the support rod drives the first connecting rod and the second connecting rod to rotate closer, the elastic member is compressed, the telescopic rod is compressed into the cylinder, and the spring is compressed. The spring absorbs the impact load and has a shock-absorbing effect.

[0023] In some embodiments, two standing pedals are included, and the support rods in the two sets of connecting rod mechanisms are both provided with standing pedals, and the two standing pedals are symmetrically arranged with respect to the wheel installation space.

[0024] In this way, by arranging the two standing pedals symmetrically on the support rods in the two sets of connecting rod mechanisms with respect to the wheel installation space, the user can stand with both legs astride the vehicle body on which the shock-absorbing frame is installed, and the user's center of gravity coincides with the wheel in the direction of gravity, so that the user can stand more balanced and stable.

[0025] In some embodiments, the standing pedal is pivotally disposed on the support rod, and the rotation direction of the standing pedal is arranged to be close to or away from the wheel installation space.

[0026] In this way, by pivoting the standing pedal on the support rod, when not in use, the user twists the standing pedal to rotate it in a direction close to the wheel, saving space and facilitating storage; when it is needed, the user twists the standing pedal to rotate it in a direction away from the wheel to open it.

[0027] According to another aspect of the present invention, there is also provided an electric unicycle, comprising a shock-absorbing frame, an electric wheel, a battery and a control main board; the electric wheel is mounted on a wheel mounting portion, the battery is electrically connected to the control main board, and the control main board is electrically connected to the electric wheel.

[0028] When in use, the user's legs straddle the two sides of the electric wheels, and the control board drives the electric wheels to move forward or backward according to the user's posture. Since the electric unicycle is used with the user's legs straddling the two sides of the electric wheels, if the body size on both sides of the electric wheels is too wide, the user's legs will be in an unnatural standing state, which will reduce the user's comfort experience. In this way, since the shock-absorbing frame transfers the elastic parts and the parts used to set and install the elastic parts outside the space area between the wheel frame and the support rod, the wheel frame / support rod structure size is reduced, and the space occupied by the structure between the wheel frame and the support rod is reduced, and the body size on both sides of the electric wheels can be reduced, providing the user with space to keep his legs in a natural standing state; that is, it provides expansion space for the electric unicycle to achieve a more spacious standing space function.

[0029] In some embodiments, a housing is further included, wherein the housing is disposed on the wheel frame and covers the electric wheel.

[0030] In this way, by arranging the shell on the wheel frame and covering the electric wheel with the shell, the shell can prevent the user's legs or trouser legs from being entangled in the electric wheel, thereby enhancing the safety performance of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1It is a schematic structural diagram of a shock-absorbing frame according to an embodiment of the present invention;

[0032] Figure 2 for Figure 1 The schematic diagram of the structure of the shock-absorbing frame after the electric wheel of the electric unicycle is installed;

[0033] Figure 3 for Figure 2 A schematic diagram of the state of the shock-absorbing frame in the shock-absorbing and buffering operation;

[0034] Figure 4 for Figure 2 A schematic diagram of the three-dimensional structure of the shock-absorbing frame shown;

[0035] Figure 5 for Figure 4 A schematic diagram of a three-dimensional structure from another perspective;

[0036] Figure 6 for Figure 2 Left view of .

[0037] Figure symbols: 100 - shock-absorbing frame, 1 - wheel frame, 11 - wheel mounting portion, 2 - support rod, 21 - standing pedal, 3 - elastic member, 41 - first connecting rod, 411 - first point, 42 - second connecting rod, 421 - first section, 422 - second section, 423 - second point, 5 - intermediate pivot member, 6 - electric wheel DETAILED DESCRIPTION

[0038] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0039] like Figure 1 As shown, the shock-absorbing frame includes: a wheel frame 1, a support rod 2, an elastic member 3 and a plurality of connecting rods; the support rod 2 is slidably arranged on the wheel frame 1; at least one connecting rod is pivotally connected to the support rod 2; at least one connecting rod is pivotally connected to the wheel frame 1; the wheel frame 1, the support rod 2 and the plurality of connecting rods together constitute a connecting rod mechanism, in which the wheel frame 1 is set as a fixed component, the support rod 2 is set as an active component, and the plurality of connecting rods are all set as driven components; the elastic member 3 is set between any two components in the connecting rod mechanism except between the wheel frame 1 and the support rod 2; and the degree of freedom of the connecting rod mechanism is equal to 1, that is, the support rod 2 moves in a sliding direction on the wheel frame 1. Specifically, let the number of connecting rods be n, in this connecting rod mechanism, let the number of low-pair constraints be PL, and the number of high-pair constraints be PH. Since the wheel frame 1 is set as a fixed component and the support rod 2 is set as an active component, then in a specific embodiment, the connection mode of the wheel frame 1, the support rod 2 and the plurality of connecting rods can satisfy the degree of freedom = 3*(n+1)-2PL-Ph=1.

[0040] like Figures 1 to 5As shown, during manufacturing and assembly, the wheels of the vehicle body are mounted on the wheel frame 1 of the shock-absorbing frame 100, and the load-bearing part of the vehicle body is mounted on the support rod 2 of the shock-absorbing frame 100; when the vehicle body is traveling on an uneven road surface, the wheels are in a vibrating state, and the vibration state is transmitted to the wheel frame 1. Since the support rod 2 is slidably arranged on the wheel frame 1, relative sliding occurs between the support rod 2 and the wheel frame 1 (that is, it can be understood that the wheel frame 1 is relatively fixed and the support rod 2 extends or retracts on the wheel frame 1). Since the wheel frame 1, the support rod 2 and the multiple connecting rods together constitute a connecting rod mechanism with a degree of freedom equal to 1, in this connecting rod mechanism, the wheel frame 1 is set as a fixed component, the support rod 2 is set as an active component, and the multiple connecting rods are set as driven components; since the degree of freedom of the connecting rod mechanism is 1, when the support rod 2 moves in a sliding direction on the wheel frame 1, the multiple connecting rods in the connecting rod mechanism can only move from the initial position in a space with a degree of freedom of 1 (such as translation or plane rotation). At the same time, since the elastic member 3 is set in the connecting rod mechanism Between any two parts of the structure except between the wheel frame 1 and the support rod 2 (for example, the elastic member 3 is arranged between the connecting rod and the connecting rod / between the connecting rod and the wheel frame 1 / between the connecting rod and the support rod 2), the elastic member 3 will produce elastic deformation from the initial state, absorb impact vibration, reduce the vibration amplitude of the vehicle body, and generate accumulated force to restore the initial state. When the vehicle body leaves the uneven road surface, the accumulated force drives the entire connecting rod mechanism to return to its original state, that is, the support rod 2 and the wheel frame 1 return to their initial relative positions; in addition, since the elastic member 3 is arranged between any two parts of the connecting rod mechanism except between the wheel frame 1 and the support rod 2 (that is, the elastic member 3 is not arranged between the wheel frame 1 and the support rod 2), the elastic member 3 and the parts for setting and installing the elastic member 3 are transferred to the outside of the space area between the wheel frame 1 and the support rod 2, the structural size of the wheel frame 1 / support rod 2 is reduced, and the structural space occupied by the wheel frame 1 and the support rod 2 is reduced, which can provide use / expansion space for other parts or functions on the vehicle body, thereby making the overall structure of the vehicle body more concise and compact.

[0041] In detail, in this embodiment, the elastic member 3 is arranged between any two connecting rods. In this way, by further limiting the arrangement position of the elastic member 3 to between any two connecting rods (i.e., the elastic member 3 is not connected to any one of the wheel frame 1 and the support rod 2), the elastic member 3 and the components for arranging and installing the elastic member 3 are further transferred to components outside the wheel frame 1 and the support rod 2, thereby further reducing the structural space occupied by the wheel frame 1 and the support rod 2.

[0042] In detail, in this embodiment, the connecting rod mechanism includes a first connecting rod 41 and a second connecting rod 42; the support rod 2, the first connecting rod 41, the second connecting rod 42, and the wheel frame 1 are pivotally connected in sequence; and the elastic member 3 is arranged between the first connecting rod 41 and the second connecting rod 42. In this way, since the support rod 2 is slidingly arranged on the wheel frame 1 along the sliding direction, there is a low-pair constraint between the support rod 2 and the wheel frame 1, and since the pivot connection mode is also a low-pair constraint, then in this connecting rod mechanism, there are specifically 3 movable components, 4 low-pair constraints, and 0 high-pair constraints. Then the degree of freedom of this connecting rod mechanism = 3*3-2*4-0=1, that is, the wheel frame 1, the support rod 2 and a plurality of connecting rods are formed into a connecting rod mechanism with a degree of freedom = 1. In other embodiments, the specific number of connecting rods, and the matching mode between the connecting rods and between the connecting rods and the support rod 2 / wheel frame 1 can also be adjusted appropriately according to actual conditions, that is, as long as it can form a connecting rod mechanism with a degree of freedom = 1.

[0043] In this embodiment, a wheel mounting portion 11 is provided on the wheel frame 1; the second connecting rod 42 is pivotally connected to a position of the wheel frame 1 away from the wheel mounting portion 11. In this way, by pivotally connecting the second connecting rod 42 to a position of the wheel frame 1 away from the wheel mounting portion 11, a wider use / expansion space can be provided for the space near the wheel on the vehicle body on which the shock-absorbing frame 100 is installed.

[0044] like Figure 1 As shown, in the present embodiment, the second connecting rod 42 includes a first section 421 and a second section 422, the first section 421 is bent and extended relative to the second section 422 in a direction away from the wheel mounting portion 11, and the second section 422 is pivotally connected to the wheel frame 1 at a position away from the wheel mounting portion 11; the connection between the elastic member 3 and the first connecting rod 41 is the first point 411, the connection between the first section 421 and the second section 422 is the second point 423, the second point 423 is offset in a direction away from the first point 411, and the connection between the elastic member 3 and the second connecting rod 42 is arranged at the second point 423. In this way, by limiting the second connecting rod 42 to include a first section 421 and a second section 422, the first section 421 is bent and extended relative to the second section 422 in a direction away from the wheel mounting portion 11, and the second section 422 is pivotally connected to the wheel frame 1 at a position away from the wheel mounting portion 11, the second connecting rod 42 is pivotally connected to the wheel frame 1 at a position away from the wheel mounting portion 11; at the same time, since the connection between the elastic member 3 and the first connecting rod 41 is the first point 411, the connection between the first section 421 and the second section 422 is the second point 423, and the connection between the elastic member 3 and the second connecting rod 42 is arranged at the second point 423, by offsetting the second point 423 in a direction away from the first point 411, the distance between the first point 411 and the second point 423 is increased, that is, the elastic member 3 with a larger elastic deformation amplitude can be connected between the first point 411 and the second point 423, thereby increasing the shock absorbing stroke of the shock absorbing frame 100.

[0045] In detail, in this embodiment, a bearing component is also included, and the bearing component is arranged on the support rod 2. In this way, by arranging the bearing component on the support rod 2, the support rod 2 plays the function of load bearing.

[0046] like Figure 1 to Figure 6 As shown, in more detail, in this embodiment, the bearing component is a standing pedal 21; a through sleeve is provided on the wheel frame 1, and the support rod 2 is sleeved in the through sleeve; the connecting rod is pivotally connected to one end of the support rod 2, and the standing pedal 21 is provided on the other end of the support rod 2. In this way, by setting the bearing component as a standing pedal 21 that is convenient for the user to stand (for example, in the use scenarios of a standing balance patrol car, an electric bicycle, a unicycle, etc.), a standing space is provided for the user; in addition, by providing sleeves that penetrate each other at both ends on the wheel frame 1, the support rod 2 is sleeved in the through sleeve, and the connecting rod and the standing pedal 21 are respectively provided on the two ends of the support rod 2, so that the connecting rod is arranged away from the standing pedal 21, so as to avoid the connecting rod rotating and scraping the user's legs during shock absorption and buffering, thereby improving the safety performance of the shock-absorbing frame 100.

[0047] Furthermore, in this embodiment, two sets of connecting rod mechanisms are included, the two sets of connecting rod mechanisms are arranged opposite to each other, and a wheel installation space is arranged between the two sets of connecting rod mechanisms. In this way, by arranging the two sets of connecting rod mechanisms opposite to each other, the wheel can be installed in the wheel installation space between the two sets of connecting rod mechanisms during assembly, so that the center of gravity of the shock-absorbing frame 100 coincides with the wheel in the direction of gravity, so that the vehicle body equipped with the shock-absorbing frame 100 is more stable when traveling.

[0048] Furthermore, in the present embodiment, the two sets of link mechanisms are symmetrically arranged with respect to the wheel installation space; and an intermediate pivoting member 5 is further included; the first links 41 in the two sets of link mechanisms are both pivotally arranged on the support rod 2 through the intermediate pivoting member 5. In detail, in the present embodiment, the intermediate pivoting member 5 is connected to the ends of the two first links 41, and the intermediate pivoting member 5 is pivotally arranged on the support rod 2 through a bearing and a pin. In this way, by symmetrically arranging the two sets of link mechanisms with respect to the wheel installation space, and the first links 41 in the two sets of link mechanisms are commonly connected to the intermediate pivoting member 5 pivotally arranged on the support rod 2 with a rotating shaft, the two sets of link mechanisms move synchronously and consistently during the buffering and shock absorbing operation, and the stability performance of the shock absorbing frame 100 is further enhanced.

[0049] In detail, in this embodiment, the elastic member 3 includes a telescopic rod, a spring and a cylinder, the telescopic rod is sleeved in the cylinder, and the spring is arranged between the telescopic rod and the cylinder; it also includes a first rotating shaft and a second rotating shaft; the telescopic rod is pivotally connected to the first connecting rod 41 in the two sets of connecting rod mechanisms through the first rotating shaft; the cylinder is pivotally connected to the second connecting rod 42 in the two sets of connecting rod mechanisms through the second rotating shaft. In this way, when the shock-absorbing frame 100 performs shock-absorbing and buffering work, the support rod 2 drives the first connecting rod 41 and the second connecting rod 42 to rotate closer, the elastic member 3 is compressed, the telescopic rod is compressed into the cylinder, and the spring is compressed, the spring absorbs the impact load, and has a shock-absorbing effect.

[0050] In this embodiment, two standing pedals 21 are included, and the standing pedals 21 are provided on the support rods 2 in the two sets of connecting rod mechanisms, and the two standing pedals 21 are symmetrically arranged with respect to the wheel installation space. In this way, by symmetrically arranging the two standing pedals 21 on the support rods 2 in the two sets of connecting rod mechanisms with respect to the wheel installation space, the user can stand with both legs astride the vehicle body on which the shock-absorbing frame 100 is installed, and the center of gravity of the user coincides with the wheel in the direction of gravity, so that the user can stand more balanced and stable.

[0051] In this embodiment, the standing pedal 21 is pivotally mounted on the support rod 2, and the rotation direction of the standing pedal 21 is set to be close to or away from the wheel installation space. In this way, by pivotally mounting the standing pedal 21 on the support rod 2, when not in use, the user twists the standing pedal 21 to rotate in the direction close to the wheel, saving space and facilitating storage; when in need of use, the user twists the standing pedal 21 to rotate in the direction away from the wheel, so that the standing pedal 21 is opened.

[0052] like Figure 2 to Figure 6As shown, in the present embodiment, an electric unicycle is also provided, comprising a shock-absorbing frame 100, an electric wheel 6, a battery (not shown) and a control main board (not shown); the electric wheel 6 is mounted on the wheel mounting portion 11 and accommodated in the wheel mounting space between two sets of symmetrically arranged connecting rod mechanisms, the battery is electrically connected to the control main board, and the control main board is electrically connected to the electric wheel 6. When in use, the user's legs straddle the two sides of the electric wheel 6, and the control main board drives the electric wheel 6 to move forward or backward according to the user's tendency posture. Since the electric unicycle is used in a way that the user's legs straddle the two sides of the electric wheel 6, if the body size on both sides of the electric wheel 6 is too wide, the user's legs will be in an unnatural standing state, which will reduce the user's comfort experience. In this way, since the shock-absorbing frame 100 transfers the elastic member 3 and the components used to set and install the elastic member 3 to outside the space area between the wheel frame 1 and the support rod 2, the structural size of the wheel frame 1 / support rod 2 is reduced, and the structural space occupied by the wheel frame 1 and the support rod 2 is reduced, and the body size on both sides of the electric wheel 6 can be reduced, providing the user with space to keep his legs in a natural standing state; that is, it provides expansion space for the electric unicycle to achieve a more spacious standing space function.

[0053] In this embodiment, a housing (not shown) is further included, which is disposed on the wheel frame 1 and covers the electric wheel 6. Thus, by disposing the housing on the wheel frame 1 and covering the electric wheel 6, the housing can prevent the user's legs or trouser legs from being entangled in the electric wheel 6, thereby enhancing the safety performance of use.

[0054] The above are only some embodiments of the present invention. For those skilled in the art, several modifications and improvements can be made without departing from the creative concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A shock-absorbing frame, characterized in that: include: A wheel frame, a support rod, an elastic member, a first connecting rod and a second connecting rod; The support rod is slidably arranged on the wheel frame; the support rod, the first connecting rod, the second connecting rod, and the wheel frame are pivotally connected in sequence, and the elastic member is arranged between the first connecting rod and the second connecting rod; The wheel frame, the support rod, the first connecting rod and the second connecting rod together constitute a connecting rod mechanism, in which the wheel frame is set as a fixed member, the support rod is set as an active member, and the first connecting rod and the second connecting rod are both set as driven members; a wheel mounting portion is provided on the wheel frame; The second connecting rod comprises a first section and a second section, the first section is bent and extended relative to the second section in a direction away from the wheel mounting portion, and the second section is pivotally connected to a position on the wheel frame away from the wheel mounting portion; The connection point between the elastic member and the first connecting rod is a first point, the connection point between the first section and the second section is a second point, the second point is offset in a direction away from the first point, and the connection point between the elastic member and the second connecting rod is arranged at the second point; And the degree of freedom of the connecting rod mechanism is equal to 1.

2. The shock-absorbing frame according to claim 1, characterized in that: It also includes a bearing component, which is arranged on the support rod.

3. The shock-absorbing frame according to claim 2, characterized in that: The bearing component is a standing pedal; The wheel frame is provided with a through sleeve, and the support rod is sleeved in the through sleeve; The first connecting rod is pivotally connected to one end of the support rod, and the standing pedal is arranged on the other end of the support rod.

4. The shock-absorbing frame according to claim 3, characterized in that: It comprises two sets of connecting rod mechanisms, which are arranged opposite to each other, and a wheel installation space is arranged between the two sets of connecting rod mechanisms.

5. The shock-absorbing frame according to claim 4, characterized in that: The two sets of connecting rod mechanisms are symmetrically arranged with respect to the wheel installation space; Also included is an intermediate pivot member; The first connecting rods in the two sets of connecting rod mechanisms are both pivotally arranged on the supporting rod through the intermediate pivoting member.

6. The shock-absorbing frame according to claim 5, characterized in that: The elastic member comprises a telescopic rod, a spring and a cylinder, the telescopic rod is sleeved in the cylinder, and the spring is arranged between the telescopic rod and the cylinder; Also includes a first rotating shaft and a second rotating shaft; The telescopic rod is pivotally connected to the first connecting rods in the two sets of connecting rod mechanisms respectively through the first rotating shaft; The cylinder is pivotally connected to the second connecting rods in the two sets of connecting rod mechanisms through the second rotating shaft.

7. The shock-absorbing frame according to claim 6, characterized in that: It comprises two standing pedals, the support rods in the two sets of connecting rod mechanisms are both provided with the standing pedals, and the two standing pedals are symmetrically arranged with respect to the wheel installation space.

8. The shock-absorbing frame according to claim 7, characterized in that: The standing pedal is pivotally arranged on the support rod, and the rotation direction of the standing pedal is arranged to be close to or away from the wheel installation space.

9. Electric unicycle, characterized in that: It comprises a shock-absorbing frame, an electric wheel, a battery and a control mainboard as described in any one of claims 1 to 8; The electric wheel is mounted on the wheel mounting portion, the battery is electrically connected to the control main board, and the control main board is electrically controlled to the electric wheel.

10. The electric unicycle according to claim 9, characterized in that: It also includes a shell, which is arranged on the wheel frame and covers the electric wheel.

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