Leg support mechanism and automobile seat

Abstract

The leg supporting mechanism comprises an unfolding mechanism and a telescopic mechanism, the unfolding mechanism comprises a multi-connecting-rod mechanism and a driving device, the driving device is used for driving the multi-connecting-rod mechanism to conduct unfolding and retracting actions, and a force transmission sliding rail installation part is fixed to a target connecting rod of the multi-connecting-rod mechanism; the telescopic mechanism comprises a guide sliding rail, a leg supporting plate and a force transmission sliding rail, a guide fixing part of the guide sliding rail is arranged at the output end of the multi-connecting-rod mechanism so as to do spatial motion, the spatial motion at least comprises swinging relative to the target connecting rod, and the leg supporting plate is arranged on a guide sliding part of the guide sliding rail so as to do force transmission. The force transmission fixing part of the force transmission sliding rail is arranged on the force transmission sliding rail installation part, and the force transmission sliding part of the force transmission sliding rail is directly or indirectly hinged to the guiding sliding part. According to the leg supporting mechanism, only one driving device is arranged, the leg supporting plate can be unfolded, folded and slide inwards and outwards, and due to the fact that one driving device is omitted, the cost, the weight and the occupied space of the leg supporting mechanism are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile seats, and more specifically to a leg support mechanism and an automobile seat. Background Art

[0002] At present, the requirements for riding comfort of cars on the market are getting higher and higher, and the leg support device has become an indispensable mechanism for car seats. At present, there are generally two types of leg support devices according to different adjustment directions, one is a two-way leg support, and the other is a four-way leg support.

[0003] Among them, the two-way leg rest can only realize the rotation adjustment function or the telescopic adjustment function. That is, one part of the two-way leg rest can realize the front and back adjustment, and the other part of the leg rest can realize the swing adjustment. Whether it is the front and back adjustment or the swing adjustment, it can only be adjusted in one direction. Passengers can adjust the leg rest to the appropriate position according to their needs.

[0004] The four-way leg rest can realize both rotation and extension at the same time. Compared with the two-way leg rest, the four-way leg rest has more adjustment directions, so it is easier to adjust the leg rest to a comfortable position for the passenger. At present, the rotation and extension of the four-way leg rest are driven by two driving devices respectively, that is, one of the driving devices is used to control the leg rest plate of the leg rest mechanism to perform extension and extension, and the other driving device is used to drive the leg rest plate to perform rotation. Since two driving devices are required, the cost of the leg rest mechanism in the prior art is relatively high, and the weight and space occupied are relatively large.

[0005] Therefore, how to reduce cost, weight and space occupancy has become a technical problem that needs to be urgently solved by technical personnel in this field. Utility Model Content

[0006] In view of this, the purpose of the present invention is to provide a leg support mechanism to reduce cost, weight and space occupation;

[0007] Another object of the utility model is to provide a car seat with the above-mentioned leg support mechanism.

[0008] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0009] A leg support mechanism comprises an unfolding mechanism and a telescopic mechanism, wherein the unfolding mechanism comprises a multi-link mechanism and a driving device, wherein the driving device is used to drive the multi-link mechanism to unfold and retract, and a force transmission slide rail mounting portion is fixed on a target link of the multi-link mechanism;

[0010] The telescopic mechanism includes a guide slide rail, a leg support plate and a force transmission slide rail. The guide fixed portion of the guide slide rail is arranged at the output end of the multi-link mechanism so as to be driven by the multi-link mechanism to perform spatial movement. The spatial movement at least includes swinging relative to the target link. The leg support plate is arranged on the guide sliding portion of the guide slide rail. The force transmission fixed portion of the force transmission slide rail is arranged on the force transmission slide rail mounting portion. The force transmission sliding portion of the force transmission slide rail is directly or indirectly hinged to the guide sliding portion of the guide slide rail.

[0011] Optionally, in the above-mentioned leg support mechanism, the multi-link mechanisms are two symmetrically arranged, and the force transmission slide rail is arranged between the two multi-link mechanisms;

[0012] There are two guide rails corresponding to the two multi-link mechanisms one by one, and the leg support plate is fixed on the guide sliding parts of the two guide rails.

[0013] Optionally, in the above-mentioned leg rest mechanism, the driving device is supported on a leg rest bracket, and one end of the multi-link mechanism is hinged to the leg rest bracket.

[0014] Optionally, in the above-mentioned leg support mechanism, the multi-link mechanism includes:

[0015] a first connecting rod, a first end of the first connecting rod being hinged to a first hinge point of the leg support bracket;

[0016] a second connecting rod, a first end of the second connecting rod being hinged to a second hinge point of the leg support bracket;

[0017] a third connecting rod, wherein a first end of the third connecting rod is hinged to a second end of the second connecting rod;

[0018] A fourth link, wherein the first end of the fourth link is hinged to the second end of the first link, the second link and the fourth link intersect and are hinged at the intersection, the second end of the third link and the second end of the fourth link are output ends of the multi-link mechanism, and the fourth link is the target link.

[0019] Optionally, in the above-mentioned leg support mechanism, the guide fixing portion of the guide rail is arranged at the output end of the multi-link mechanism through a guide rail mounting bracket;

[0020] The second end of the third connecting rod is hinged to the first hinge point of the guide rail mounting bracket, and the second end of the fourth connecting rod is hinged to the second hinge point of the guide rail mounting bracket;

[0021] The guide fixing portion of the guide slide rail is fixed on the guide rail mounting bracket.

[0022] Optionally, in the above-mentioned leg support mechanism, the second connecting rod and the fourth connecting rod are hinged in the middle area therebetween.

[0023] Optionally, in the above-mentioned leg support mechanism, one of the first connecting rod and the second connecting rod is connected to a driving cross bar, and the driving device is used to drive the driving cross bar to move.

[0024] Optionally, in the above-mentioned leg support mechanism, a hinged ear plate is provided on the driving cross bar, and the telescopic rod of the driving device is hinged to the hinged ear plate.

[0025] A flat panel mounting frame is provided on one side surface of the leg support plate facing the guide rail, and the flat panel mounting frame is fixed on the guide sliding portion of the guide rail.

[0026] The leg support mechanism provided by the utility model, when the leg support function is needed, drives the multi-link mechanism to perform an expansion action through a driving device, and as the multi-link mechanism gradually expands, the angle of the guide rail relative to the force transmission rail mounting portion gradually increases. Since the leg support plate is arranged on the guide sliding portion of the guide rail, the angle between the leg support plate and the guide rail is constant, and the force transmission fixing portion of the force transmission rail is arranged on the force transmission rail mounting portion, the angle between the force transmission rail and the force transmission rail mounting portion is constant. As the angle of the guide rail relative to the force transmission rail mounting portion gradually increases, the angle between the force transmission rail and the leg support plate will also change accordingly, and in addition, the guide rail limits the freedom of the leg support plate in other directions. In order to meet the increase in the angle between the force transmission rail and the leg support plate, the leg support plate will slide outward along the guide rail. When the leg support function is not used, the multi-link mechanism is driven by the driving device to perform a retraction action, and accordingly, the leg support plate will be retracted inward along the guide rail.

[0027] The leg support mechanism provided by the utility model utilizes a multi-link mechanism to perform the expansion and retraction action, and the angle between the force transmission slide rail and the leg support plate changes. At the same time, the force transmission slide rail and the leg support plate are respectively fixed on corresponding components, so that both have no freedom of swinging, and can only adapt to the change in the angle between the force transmission slide rail and the leg support plate by sliding the leg support plate along the guide slide rail. Therefore, only one driving device is required to complete the expansion and retraction action and the inward and outward sliding action of the leg support plate. Since one driving device is reduced, the cost and weight of the leg support mechanism and the occupation of the car seat space are reduced.

[0028] A car seat comprises the leg support mechanism as described in any one of the above items.

[0029] The automobile seat provided by the utility model has the above-mentioned leg support mechanism, and thus has all the technical effects of the above-mentioned leg support mechanism, which will not be described in detail herein. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0031] Figure 1 It is a structural schematic diagram of the leg support mechanism disclosed in the embodiment of the utility model when it is in a retracted state;

[0032] Figure 2 It is a structural schematic diagram of the unfolding mechanism disclosed in the embodiment of the utility model;

[0033] Figure 3 A detailed diagram of the parts of the unfolding mechanism disclosed in the embodiment of the utility model;

[0034] Figure 4 It is a structural schematic diagram of the telescopic mechanism disclosed in the embodiment of the utility model;

[0035] Figure 5 It is a detailed diagram of the parts of the telescopic mechanism disclosed in the embodiment of the utility model;

[0036] Figure 6 It is a structural schematic diagram of the leg support mechanism disclosed in the embodiment of the utility model when it is in the unfolded state.

[0037] The meanings of the reference numerals in the figures are as follows:

[0038] 000-Leg support mechanism;

[0039] 100-unfolding mechanism; 110-driving device; 111-telescopic rod; 120-leg support bracket; 130-multi-link mechanism; 131-first link; 132-second link; 133-third link; 134-fourth link; 140-guide rail mounting bracket; 150-driving cross bar; 151-hinged ear plate; 160-force transmission slide rail mounting portion;

[0040] 200- telescopic mechanism; 210- leg support plate; 211- flat panel mounting frame; 220- guide rail; 221- guide fixing part; 222- guide sliding part; 230- force transmission rail; 231- force transmission sliding part; 232- force transmission fixing part. DETAILED DESCRIPTION

[0041] The core of the utility model is to provide a leg support mechanism to reduce the cost, weight and space occupation;

[0042] Another core of the utility model is to provide a car seat with the above-mentioned leg support mechanism.

[0043] The following is an explanation of the embodiments with reference to the accompanying drawings. In addition, the embodiments shown below do not limit the contents of the utility model described in the claims. In addition, the entire contents of the structures represented by the following embodiments are not limited to those necessary as solutions of the utility model described in the claims. It should be noted that, for ease of description, only the parts related to the utility model are shown in the accompanying drawings. In the absence of conflict, the embodiments in the utility model and the features in the embodiments can be combined with each other.

[0044] The four-way leg rest in the prior art usually needs to be equipped with two driving devices to realize the movement in two directions respectively, which leads to high cost, large space occupation and heavy weight. How to use only one driving device to complete the movement in two directions (from the perspective of round trip, it should be four directions) to reduce the cost, weight and space occupation.

[0045] like Figure 1 As shown, the leg support mechanism disclosed in the embodiment of the utility model includes an unfolding mechanism 100 and a telescopic mechanism 200. The unfolding mechanism 100 is used to output unfolding and retracting actions, and the telescopic mechanism 200 is used to output telescopic actions.

[0046] like Figure 2 and Figure 3 As shown, in this embodiment, the deployment mechanism 100 includes a multi-link mechanism 130 and a driving device 110, and the driving device 110 is used to drive the multi-link mechanism 130 to perform deployment and retraction actions. The specific structure of the multi-link mechanism 130 can be designed according to the desired output motion trajectory. Generally, when the multi-link mechanism 130 performs the deployment action, the telescopic mechanism 200 can be pushed forward and swung upward at the same time to push the telescopic mechanism 200 to a position that can support the passenger's legs; on the contrary, when the multi-link mechanism 130 performs the retraction action, the telescopic mechanism 200 can be pulled back and swung downward at the same time to compress and store the telescopic mechanism 200 to the rear, thereby reducing the occupation of the passenger's leg space.

[0047] A force transmission slide rail mounting portion 160 is fixed to the target link of the multi-link mechanism 130 , and the force transmission slide rail mounting portion 160 is used to realize the installation of the telescopic mechanism 200 , so that the telescopic mechanism 200 can be driven to move when the multi-link mechanism 130 is extended or retracted.

[0048] like Figure 4 and Figure 5As shown, in this embodiment, the telescopic mechanism 200 includes a guide rail 220, a leg support plate 210 and a force transmission rail 230. The leg support plate 210 is a plate body that supports the legs of passengers. Usually, in order to improve comfort, the leg support plate 210 should be wrapped with a flexible body, for example, the leg support plate 210 is wrapped with leather, fabric and other materials, and the leather and fabric are filled with sponge, silicone and other materials to improve the comfort of support.

[0049] The guide rail 220 includes a guide fixing portion 221 and a guide sliding portion 222 that are slidably matched. It should be noted that the present embodiment does not limit the specific structure of the guide fixing portion 221 and the guide sliding portion 222, as long as the two can slide relative to each other. The guide fixing portion 221 is arranged at the output end of the multi-link mechanism 130, so as to be driven by the multi-link mechanism 130 to perform spatial motion, and the spatial motion at least includes swinging relative to the target link.

[0050] The connecting rod on which the force transmission slide rail mounting part 160 is installed is defined as the target connecting rod, the part of the multi-link mechanism 130 that outputs the motion to the telescopic mechanism 200 is defined as the output end of the multi-link mechanism 130, and the guide fixing part 221 is arranged at the output end of the multi-link mechanism 130. Through the structural design of the multi-link mechanism 130, the multi-link mechanism 130 drives the spatial motion of the guide fixing part 221 to at least include swinging relative to the target connecting rod (that is, the force transmission slide rail mounting part 160). When the driving device 110 drives the multi-link mechanism 130 to perform the expansion and retraction action, the guide slide rail 220 will swing relative to the force transmission slide rail mounting part 160, that is, there will be an angle change between the two.

[0051] The leg support plate 210 is disposed on the guide sliding portion 222 of the guide rail 220 , so that the leg support plate 210 has the freedom to move along the guide rail 220 through the sliding cooperation between the guide sliding portion 222 and the guide fixing portion 221 .

[0052] The force transmission rail 230 includes a force transmission sliding portion 231 and a force transmission fixing portion 232 that are slidably matched. It should be noted that the present embodiment does not limit the specific structure of the force transmission sliding portion 231 and the force transmission fixing portion 232, as long as the two can slide relative to each other. Among them, the force transmission fixing portion 232 is arranged on the force transmission rail mounting portion 160, and the force transmission sliding portion 231 is directly or indirectly hinged to the guide sliding portion 222 of the guide rail 220. For example, the force transmission sliding portion 231 can be hinged to the leg support plate 210, that is, the force transmission sliding portion 231 is indirectly hinged to the guide sliding portion 222 of the guide rail 220 through the leg support plate 210. It should be noted that in addition to the leg support plate 210, the above-mentioned indirect hinge structure can also be realized by other components. Of course, the force transmission sliding portion 231 can also be directly hinged to the guide sliding portion 222. For ease of understanding, the following text will take the example in which the force transmission sliding part 231 is indirectly hinged to the guide sliding part 222 through the leg support plate 210 for introduction.

[0053] Since the leg support plate 210 is arranged on the guide sliding portion 222 of the guide slide rail 220, the force transmission fixing portion 232 of the force transmission slide rail 230 is arranged on the force transmission slide rail mounting portion 160, and the force transmission sliding portion 231 of the force transmission slide rail 230 is hinged to the leg support plate 210; and since when the driving device 110 drives the multi-link mechanism 130 to perform expansion and retraction actions, the angle of the guide slide rail 220 relative to the force transmission slide rail mounting portion 160 will change, the angle of the force transmission slide rail 230 relative to the leg support plate 210 will change.

[0054] like Figure 6 As shown, the leg rest mechanism disclosed in the embodiment of the utility model, when the leg rest function is needed, drives the multi-link mechanism 130 to expand through the driving device 110, and as the multi-link mechanism 130 gradually expands, the angle between the guide rail 220 and the force transmission rail mounting portion 160 gradually increases. Since the leg rest plate 210 is arranged on the guide sliding portion 222 of the guide rail 220, the angle between the leg rest plate 210 and the guide rail 220 is constant, and the force transmission fixing portion 232 of the force transmission rail 230 is arranged on the force transmission rail mounting portion 160, the angle between the force transmission rail 230 and the force transmission rail mounting portion 160 is constant. As the angle between the guide rail 220 and the force transmission rail mounting portion 160 gradually increases, the angle between the force transmission rail 230 and the leg support plate 210 will also change accordingly. In addition, the guide rail 220 restricts the freedom of the leg support plate 210 in other directions. In order to meet the increase in the angle between the force transmission rail 230 and the leg support plate 210, the leg support plate 210 will slide outward along the guide rail 220. When the leg support function is not in use, the multi-link mechanism 130 is driven by the driving device 110 to retract, and accordingly, the leg support plate 210 will retract inward along the guide rail 220.

[0055] The leg support mechanism disclosed in the embodiment of the utility model utilizes the multi-link mechanism 130 to perform the expansion and retraction action, and the angle between the force transmission slide rail 230 and the leg support plate 210 changes. At the same time, the force transmission slide rail 230 and the leg support plate 210 are respectively fixed on corresponding components, so that neither of them has the freedom to swing. The leg support plate 210 can only adapt to the change in the angle between the force transmission slide rail 230 and the leg support plate 210 by sliding along the guide slide rail 220. Therefore, only one driving device is required to complete the expansion and retraction action and the inward and outward sliding action of the leg support plate 210. Since one driving device is reduced, the cost and weight of the leg support mechanism and the occupation of the car seat space are reduced.

[0056] The sliding range of the guide rail 220 should be able to ensure that the guide fixing portion 221 and the guide sliding portion 222 will not separate from each other when the multi-link mechanism 130 is fully extended and fully retracted. Of course, a limiter can also be provided for the guide fixing portion 221 and the guide sliding portion 222 to prevent the two from separating. Similarly, the force transmission sliding portion 231 and the force transmission fixing portion 232 of the force transmission rail 230 should also meet this requirement.

[0057] In order to ensure the stability of the spatial movement of the leg support 210, in this embodiment, the multi-link mechanism 130 is symmetrically arranged in two, and the force transmission slide rail 230 is arranged between the two multi-link mechanisms 130. The force transmission slide rail 230 can be arranged between the two multi-link mechanisms 130, or it can be biased towards one of the multi-link mechanisms 130. The specific position of the force transmission slide rail 230 is not limited in this embodiment.

[0058] There are two guide rails 220 corresponding to the two multi-link mechanisms 130, and the leg support plate 210 is fixed on the guide sliding parts 222 of the two guide rails 220. Correspondingly, the force transmission rail mounting part 160 is also fixed between the target links of the two multi-link mechanisms 130. The two multi-link mechanisms 130 have the same structure and are symmetrically arranged, and can move synchronously under the drive of the driving device 110. It should be noted that the number of multi-link mechanisms 130 can also exceed two, and the specific design can be based on the actual application scenario.

[0059] Furthermore, the driving device 110 is supported on the leg support bracket 120, and one end of the multi-link mechanism 130 is hinged to the leg support bracket 120, that is, in addition to providing an installation basis for the driving device 110, the leg support bracket 120 also provides an installation basis for the multi-link mechanism 130.

[0060] When there are two multi-link mechanisms 130 , there should also be two leg rest brackets 120 , and the driving device 110 can be arranged between the two leg rest brackets 120 .

[0061] like Figure 3 and Figure 6 As shown, in a specific embodiment of the present invention, the multi-link mechanism 130 may be a four-link mechanism, specifically including a first link 131, a second link 132, a third link 133 and a fourth link 134. For ease of understanding, the two ends of each link are defined as a first end and a second end, respectively.

[0062] The first end of the first connecting rod 131 is hinged to the first hinge point of the leg support bracket 120, and the first end of the second connecting rod 132 is hinged to the second hinge point of the leg support bracket 120. It should be noted that the first hinge point and the second hinge point of the leg support bracket 120 are different hinge points, that is, the first connecting rod 131 and the second connecting rod 132 should be hinged at different positions of the leg support bracket 120.

[0063] The first end of the third link 133 is hinged to the second end of the second link 132, the first end of the fourth link 134 is hinged to the second end of the first link 131, the second link 132 and the fourth link 134 intersect and are hinged at the intersection, the second end of the third link 133 and the second end of the fourth link 134 are output ends of the multi-link mechanism 130, and the fourth link 134 is the target link.

[0064] When the driving device 110 drives the multi-link mechanism 130 to perform the unfolding action, the first link 131 and the second link 132 swing around the first hinge point and the second hinge point of the leg support bracket 120 respectively. Figure 6 In the illustrated solution, the first link 131 and the second link 132 both swing counterclockwise. It should be noted that those skilled in the art can set the swinging direction of the first link 131 and the second link 132 when the multi-link mechanism 130 is deployed according to needs. The second link 132 and the fourth link 134 perform a scissor-crossing action, and the third link 133 and the fourth link 134 are in a parallel state, jointly driving the guide rail 220 to move. When the driving device 110 drives the multi-link mechanism 130 to perform a retracting action, it is opposite to the deploying action, and the process of the deploying action can be referred to, which will not be repeated in this article.

[0065] like Figure 3 As shown, in order to facilitate the connection between the guide rail 220 and the multi-link mechanism 130, a guide rail mounting bracket 140 is provided at the output end of the multi-link mechanism 130, and the guide fixing portion 221 of the guide rail 220 is arranged at the output end of the multi-link mechanism 130 through the guide rail mounting bracket 140.

[0066] The second end of the third connecting rod 133 is hinged to the first hinge point of the guide rail mounting bracket 140, and the second end of the fourth connecting rod 134 is hinged to the second hinge point of the guide rail mounting bracket 140. The guide fixing portion 221 of the guide rail 220 is fixed to the guide rail mounting bracket 140, and specifically, the guide fixing portion 221 and the guide rail mounting bracket 140 can be fixed by fasteners.

[0067] The second link 132 and the fourth link 134 are hinged in the middle area therebetween. Specifically, the middle area of ​​the second link 132 refers to any position between the two end points of the second link 132, and the middle area of ​​the fourth link 134 refers to any position between the two end points of the fourth link 134; that is, the cross-hinged position of the second link 132 and the fourth link 134 can be any position as long as it is not set at the end points of the two. The specific cross-hinged position can be reasonably arranged according to the movement requirements of the leg rest.

[0068] In order to facilitate the driving device 110 to exert the force on the multi-link mechanism 130, as shown in FIG. Figure 6As shown, one of the first connecting rod 131 and the second connecting rod 132 is connected to the driving cross rod 150. Since the first connecting rod 131 and the second connecting rod 132 are both connected to the leg support bracket 120, and the driving device 110 is also arranged on the leg support bracket 120, the driving device 110 is closer to the first connecting rod 131 and the second connecting rod 132. The driving cross rod 150 is arranged on the first connecting rod 131 or the second connecting rod 132, and the driving device 110 is used to drive the driving cross rod 150 to move, that is, the force of the driving device 110 acts on the driving cross rod 150, which facilitates the transmission of force.

[0069] When there are two multi-link mechanisms 130, the driving cross bar 150 can be arranged between the two multi-link mechanisms 130. For example, the driving cross bar 150 is connected to the second link 132, and one end of the driving cross bar 150 can be connected to the second link 132 of one multi-link mechanism 130, and the other end of the driving cross bar 150 can be connected to the second link 132 of another multi-link mechanism 130. The driving device 110 can drive the second link 132 to swing by pushing the driving cross bar 150 forward and backward, and then drive the other links of the multi-link mechanism 130 to move synchronously, and finally complete the extension and retraction action of the multi-link mechanism 130.

[0070] Furthermore, a hinged lug plate 151 is provided on the driving crossbar 150, and the telescopic rod 111 of the driving device 110 is hinged to the hinged lug plate 151. The driving device 110 may be a linear motor to drive the telescopic rod 111 to output a linear displacement, and since the hinged lug plate 151 is fixed to the driving crossbar 150, and the telescopic rod 111 is hinged to the hinged lug plate 151, when the telescopic rod 111 outputs a linear displacement in the front-rear direction, the telescopic rod 111 can exert a force on the driving crossbar 150 through the hinged lug plate 151 to complete the extension and retraction of the multi-link mechanism 130. When the telescopic rod 111 can exert a force on the driving crossbar 150 through the hinged lug plate 151, since the driving crossbar 150 does not move along the straight line of the telescopic rod 111, but moves in space, the freedom of movement in other directions is provided by the hinge between the telescopic rod 111 and the hinged lug plate 151.

[0071] In addition, when the multi-link mechanism 130 extends and retracts, the force transmission sliding portion 231 and the force transmission fixed portion 232 of the force transmission slide rail 230 will undergo relative sliding displacement, and the force transmission slide rail 230 and the telescopic rod 111 of the driving device 110 are both arranged between the two multi-link mechanisms 130. In order to avoid interference between the two, the two should be staggered between the two multi-link mechanisms 130.

[0072] like Figure 6As shown, a flat panel mounting frame 211 is provided on one side of the leg support plate 210 facing the guide rail 220, and the flat panel mounting frame 211 is fixed on the guide sliding portion 222 of the guide rail 220. That is, in this embodiment, the leg support plate 210 is connected to the guide rail 220 through the flat panel mounting frame 211 thereon, and the flat panel mounting frame 211 and the guide sliding portion 222 can be fixed by fasteners.

[0073] like Figure 1 As shown, the embodiment of the utility model further discloses a car seat, including the leg support mechanism 000 disclosed in the above embodiment. The car seat provided by the utility model has all the technical effects of the leg support mechanism 000, which will not be described in detail herein.

[0074] As shown in this application and claims, unless the context clearly indicates an exception, the words "a", "an", "a kind" and / or "the" do not refer to the singular, but also include the plural. Generally speaking, the terms "include" and "comprise" only indicate the inclusion of clearly identified steps and elements, and these steps and elements do not constitute an exclusive list. The method or device may also include other steps or elements. The elements defined by the sentence "includes a..." do not exclude the existence of other identical elements in the process, method, commodity or device that includes the elements.

[0075] In the description of this application, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in this application based on the specific content of the technical solution.

[0076] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0077] This article uses specific examples to illustrate the principles and implementation methods of the utility model. The above examples are only used to help understand the method and core ideas of the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A leg support mechanism, characterized in that: The invention comprises an unfolding mechanism (100) and a telescopic mechanism (200), wherein the unfolding mechanism (100) comprises a multi-link mechanism (130) and a driving device (110), wherein the driving device (110) is used to drive the multi-link mechanism (130) to perform unfolding and retracting actions, and a force transmission slide rail mounting portion (160) is fixed to a target link of the multi-link mechanism (130); The telescopic mechanism (200) comprises a guide rail (220), a leg support plate (210) and a force transmission rail (230); the guide fixing portion (221) of the guide rail (220) is arranged at the output end of the multi-link mechanism (130) so as to be driven by the multi-link mechanism (130) to perform spatial movement, wherein the spatial movement at least comprises swinging relative to the target link; the leg support plate (210) is arranged on the guide sliding portion (222) of the guide rail (220); the force transmission fixing portion (232) of the force transmission rail (230) is arranged on the force transmission rail mounting portion (160); and the force transmission sliding portion (231) of the force transmission rail (230) is directly or indirectly hinged to the guide sliding portion (222) of the guide rail (220).

2. The leg support mechanism according to claim 1, characterized in that: The multi-link mechanisms (130) are two symmetrically arranged, and the force transmission slide rail (230) is arranged between the two multi-link mechanisms (130); The two guide rails (220) correspond one to one to the two multi-link mechanisms (130), and the leg support plate (210) is fixed on the guide sliding parts (222) of the two guide rails (220).

3. The leg support mechanism according to claim 1, characterized in that: The driving device (110) is supported on a leg support bracket (120), and one end of the multi-link mechanism (130) is hinged to the leg support bracket (120).

4. The leg support mechanism according to claim 3, characterized in that: The multi-link mechanism (130) comprises: A first connecting rod (131), wherein a first end of the first connecting rod (131) is hinged to a first hinge point of the leg support bracket (120); A second connecting rod (132), a first end of the second connecting rod (132) being hinged to a second hinge point of the leg support bracket (120); a third connecting rod (133), wherein a first end of the third connecting rod (133) is hinged to a second end of the second connecting rod (132); A fourth link (134), wherein the first end of the fourth link (134) is hinged to the second end of the first link (131), the second link (132) and the fourth link (134) intersect and are hinged at the intersection, the second end of the third link (133) and the second end of the fourth link (134) are output ends of the multi-link mechanism (130), and the fourth link (134) is the target link.

5. The leg support mechanism according to claim 4, characterized in that: The guide fixing portion (221) of the guide slide rail (220) is arranged at the output end of the multi-link mechanism (130) via a guide rail mounting bracket (140); The second end of the third connecting rod (133) is hinged to a first hinge point of the guide rail mounting bracket (140), and the second end of the fourth connecting rod (134) is hinged to a second hinge point of the guide rail mounting bracket (140); The guide fixing portion (221) of the guide slide rail (220) is fixed on the guide rail mounting bracket (140).

6. The leg support mechanism according to claim 4, characterized in that: The second connecting rod (132) and the fourth connecting rod (134) are hinged at a middle area therebetween.

7. The leg support mechanism according to claim 4, characterized in that: One of the first connecting rod (131) and the second connecting rod (132) is connected to a driving cross rod (150), and the driving device (110) is used to drive the driving cross rod (150) to move.

8. The leg support mechanism according to claim 7, characterized in that: The driving crossbar (150) is provided with a hinged ear plate (151), and the telescopic rod (111) of the driving device (110) is hinged to the hinged ear plate (151).

9. The leg support mechanism according to any one of claims 1 to 8, characterized in that: A flat panel mounting frame (211) is provided on a surface of the leg support plate (210) facing the guide rail (220), and the flat panel mounting frame (211) is fixed on the guide sliding portion (222) of the guide rail (220).

10. A car seat, characterized in that: It comprises a leg support mechanism (000) as described in any one of claims 1 to 9.

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