Leg assisting device

Abstract

The invention belongs to the technical field of rehabilitation auxiliary equipment, and provides a leg assisting device which comprises a knee assisting device, the knee assisting device is connected with a first base, the first base is fixedly connected with a first universal joint, the first universal joint is connected with an adjusting assembly, the adjusting assembly is connected with a second universal joint, and the second universal joint is fixedly connected with a second universal joint. The second universal joint is fixedly connected with a second base, and the second base is fixedly connected with an ankle assisting device; the adjusting assembly comprises a telescopic rod, the telescopic rod is in sliding connection with a telescopic cylinder, the telescopic cylinder is in sliding connection with a containing cylinder, the telescopic rod is fixedly connected with a toothed plate, the toothed plate is meshed with a gear, a mounting groove is formed in the peripheral side of the telescopic cylinder, the gear is rotationally connected with the mounting groove, and a tooth groove is formed in the containing cylinder. A rack is arranged in the tooth groove and engaged with the gear. The telescopic function is achieved by drawing the telescopic rod, and the problem that the prior art cannot adapt to leg lengths and body proportions of different users is solved.

Description

Technical Field

[0001] The invention belongs to the technical field of rehabilitation auxiliary equipment, in particular to a leg assist device. Background Art

[0002] A leg aid is a device that assists walking. For the elderly, people with lower limb weakness due to non-central disorders, people with lower limb spasticity and poor extension, and people with unbalanced center of gravity movement, a leg aid can help them maintain body balance, increase stability when standing and walking, and reduce the risk of falling. A leg aid can also be used as an auxiliary tool in rehabilitation training to help patients gradually recover their walking function.

[0003] Chinese patent publication number CN218792974U discloses a leg support device comprising a knee support device, a first universal joint, and a connecting rod. The bottom end of the connecting rod is connected to an ankle support device, and the top end of the connecting rod is movably connected to the bottom end of the knee support device via the first universal joint. The connecting rod can swing forward, backward, left, and right about the first universal joint toward the knee support device. Compared to existing technologies, this utility model not only facilitates walking for the wearer, but also provides sufficient support, achieving more significant knee and ankle support effects.

[0004] Regarding the above-mentioned related technologies, the inventors believe that the following defects exist: due to differences in leg length and body proportions among different users, the fixed-length connecting rod cannot adapt to such individual differences, which can easily affect the user's walking posture and result in the inability to provide effective support and assistance.

[0005] Therefore, those skilled in the art have proposed a leg aid to solve the problems raised in the background art. Summary of the Invention

[0006] In order to solve the above technical problems, the present invention provides a leg aid to solve the problem in the prior art that due to the differences in leg length and body proportions among different users, the fixed-length connecting rod cannot adapt to such individual differences, which easily affects the user's walking posture and leads to the inability to provide effective support and assistance.

[0007] A leg assist device includes a knee assist device, the knee assist device being connected to a first base, the first base being fixedly connected to a first universal joint, the first universal joint being connected to an adjustment assembly, the adjustment assembly being connected to a second universal joint, the second universal joint being fixedly connected to a second base, and the second base being fixedly connected to an ankle assist device;

[0008] The adjustment assembly includes a telescopic rod, which is slidably connected to a telescopic cylinder, which is slidably connected to a receiving cylinder, and the telescopic rod is fixedly connected to a toothed plate, which is engaged with a gear. A mounting groove is provided on the circumferential side of the telescopic cylinder, and the gear is rotatably connected to the mounting groove. The receiving cylinder is provided with a tooth groove, and a rack is provided in the tooth groove, which is engaged with the gear.

[0009] Preferably, the tooth plate is fixedly connected to a guide slide block, the accommodating cylinder is provided with a guide slot, and the guide slide block and the guide slot are slidably connected.

[0010] Preferably, the telescopic rod is fixedly connected to the first universal joint, and the accommodating cylinder is fixedly connected to the second universal joint.

[0011] Preferably, the telescopic rod and the telescopic cylinder are connected with a positioning assembly;

[0012] The positioning assembly includes a support base fixedly connected to the telescopic cylinder, the support base is rotatably connected to a rotating arm, the rotating arm is fixedly connected to a positioning rod, the telescopic rod is provided with a plurality of positioning slots, the positioning rod is slidably connected to the positioning slots, and the accommodating cylinder is fixedly installed with an elastic member, which abuts against the rotating arm.

[0013] Preferably, the positioning rod is an arc-shaped rod, the positioning groove is an arc-shaped groove, the first and second bending joints are respectively provided at both ends of the rotating arm, the positioning rod is fixedly connected to the first bending joint, and the elastic member is against the second bending joint.

[0014] Preferably, the knee aid includes an upper guard plate, the upper guard plate is fixedly connected to a third base, the third base is fixedly connected to an upper support rod, the upper support rod is connected to a lower support rod, the lower support rod is connected to a fourth base, the fourth base is fixedly connected to a lower guard plate, and the lower guard plate is fixedly connected to the first base.

[0015] Preferably, the lower support rod is provided with a side groove, and the upper support rod is rotatably connected to the side groove.

[0016] Preferably, an energy absorbing component is provided between the lower support rod and the fourth base;

[0017] The energy absorption assembly includes an insertion rod, which is fixedly connected to the lower support rod. An energy absorption spring is sleeved on the circumference of the insertion rod, and one end of the energy absorption spring is fixedly connected to the lower support rod. The fourth base is provided with a receiving groove, and the insertion rod and the energy absorption spring extend into the receiving groove.

[0018] Preferably, the energy absorption assembly also includes a threaded rod, which is threadedly connected to the fourth base and extends into the accommodating groove. One end of the threaded rod extending into the accommodating groove is fixedly connected to a lifting plate, and the lifting plate is slidably connected to the accommodating groove. A through groove is provided on the threaded rod and the lifting plate, and the insertion rod is slidably connected to the through groove. The other end of the energy absorption spring is fixedly connected to the lifting plate.

[0019] Preferably, the upper guard plate and the lower guard plate are respectively provided with through grooves.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The present invention realizes the telescopic function by pulling out the telescopic rod. When the telescopic rod is pulled upward, the telescopic rod drives the tooth plate to move upward together. Since the tooth plate is engaged with the gear, the gear rotates at this time. At the same time, since the gear is engaged with the rack, the rotating gear pushes the telescopic cylinder to move upward. The multi-stage telescopic structure enables the total length of the adjustment component to be quickly adjusted, solving the problem that the existing technology cannot adapt to the leg lengths and body proportions of different users. It can better fit the user's body structure, play a supporting and auxiliary role, ensure the user's walking posture is correct, and improve the wearing comfort and adaptability. Moreover, when the adjustment component is in a fully retracted state, the volume is small, which provides convenience for use and storage and improves portability.

[0022] 2. The present invention provides thrust to the second flexure joint through the elasticity of the elastic part, thereby rotating the rotating plate. The first flexure joint drives the positioning rod to be inserted into the positioning groove. At this time, the total length of the adjustment assembly is fixed, preventing the total length of the adjustment assembly from changing when the user is moving. The positioning rod can be inserted into different positioning grooves as needed to fix the total length of the adjustment assembly within an appropriate range.

[0023] 3. The present invention provides an energy-absorbing spring. When the user moves, the energy-absorbing spring is squeezed by the lower support rod due to the movement. The energy-absorbing spring deforms to absorb the impact force, relieves the pressure on the lower limb joints, reduces the risk of injury, and improves the comfort and safety of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is an overall schematic diagram of a leg assist device;

[0025] Figure 2 A schematic diagram of an adjustment component of a leg assist device;

[0026] Figure 3 A cross-sectional view of an adjustment assembly of a leg assist device;

[0027] Figure 4 for Figure 3 An enlarged schematic diagram of point B in FIG.

[0028] Figure 5 for Figure 3 The enlarged schematic diagram of point C in FIG.

[0029] Figure 6 for Figure 1 A is an enlarged schematic diagram;

[0030] Figure 7 A schematic diagram of an energy-absorbing component of a leg assist device.

[0031] In the picture:

[0032] 1. Knee support; 101. Upper guard plate; 102. Third base; 103. Upper support rod; 104. Lower support rod; 105. Fourth base; 106. Lower guard plate; 107. Side groove; 2. First base; 3. First universal joint; 4. Adjustment assembly; 401. Telescopic rod; 402. Telescopic cylinder; 403. Accommodating cylinder; 404. Tooth plate; 405. Gear; 406. Mounting groove; 407. Tooth groove; 408. Rack; 409. Guide slider; 4 10. Guide slide; 5. Second universal joint; 6. Second base; 7. Ankle aid; 8. Positioning assembly; 801. Support seat; 802. Rotating arm; 803. Positioning rod; 804. Positioning slot; 805. Elastic member; 806. First bending joint; 807. Second bending joint; 9. Energy absorbing assembly; 901. Insert rod; 902. Energy absorbing spring; 903. Accommodating slot; 904. Threaded rod; 905. Lifting plate; 906. Through slot; 10. Through slot. DETAILED DESCRIPTION

[0033] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0034] Example 1

[0035] As attached Figure 1 To the attached Figure 4As shown, this embodiment provides a leg aid, including a knee aid 1, wherein the knee aid 1 is used to fix and support the knee, protect the knee joint, share the pressure of the knee joint, and improve walking stability. The knee aid 1 is connected to a first base 2, the first base 2 is fixedly connected to a first universal joint 3, the first universal joint 3 is connected to an adjustment component 4, by setting the adjustment component 4 to adjust the length of the leg aid according to the user's leg length and body proportion, it can better fit the user's body structure, play a supporting and auxiliary role, ensure the user's walking posture is correct, and improve wearing comfort and adaptability. The adjustment component 4 is connected to a second universal joint 5. By setting the first universal joint 3 and the second universal joint 5, the angle between the knee aid 1 and the ankle aid 7 can change with movement, thereby improving wearing comfort. The second universal joint 5 is fixedly connected to a second base 6, the second base 6 is fixedly connected to the ankle aid 7, wherein the ankle aid 7 is worn at the ankle, can provide stable support for the ankle joint, and assist the user in walking;

[0036] The adjusting assembly 4 includes a telescopic rod 401, which is slidably connected to a telescopic cylinder 402, which is slidably connected to a receiving cylinder 403, and a toothed plate 404 fixedly connected to the telescopic rod 401. When the telescopic rod 401 is pulled, the toothed plate 404 and the telescopic rod 401 move together, and the toothed plate 404 is engaged with a gear 405. The geared plate 404 drives the gear 405 to rotate during the movement. A mounting groove 406 is provided on the circumference of the telescopic cylinder 402, and the gear 405 is rotatably connected to the mounting groove 406. The mounting groove 406 provides space for the gear 405 to be installed. The receiving cylinder 403 is provided with a toothed groove 407. One side of the gear 405 is engaged with the toothed plate 407. Part of it extends into the tooth groove 407, and the tooth groove 407 and the gear 405 cooperate to prevent the telescopic cylinder 402 and the accommodating cylinder 403 from rotating and misaligning. A rack 408 is provided in the tooth groove 407, and the rack 408 is engaged with the gear 405. Since the rack 408 is engaged with the gear 405, the rotating gear 405 pushes the telescopic cylinder 402 to move upward. The multi-stage telescopic adjustment component 4 can quickly adjust the distance between the knee aid 1 and the ankle aid 7 to adapt to the leg length and body proportions of different users, and can better fit the user's body structure. When the adjustment component 4 is in a fully retracted state, the volume is small, which provides convenience for use and storage.

[0037] Specifically, the tooth plate 404 is fixedly connected to a guide slider 409, and the accommodating tube 403 is provided with a guide slot 410. The guide slider 409 and the guide slot 410 are slidably connected. Through the cooperation of the guide slider 409 and the guide slot 410, the telescopic rod 401 can be assisted to move stably to avoid dislocation. At the same time, the wire slider slides in the guide slot 410. Since the length of the guide slot 410 is limited, the telescopic rod 401 can also be prevented from separating from the accommodating tube 403.

[0038] Furthermore, the telescopic rod 401 is fixedly connected to the first universal joint 3 , and the accommodating tube 403 is fixedly connected to the second universal joint 5 .

[0039] As can be seen from the above, the total length of the adjustment assembly 4 is adjusted according to the user's leg length and body proportions. When adjusting, the telescopic rod 401 is pulled upward, and the telescopic rod 401 drives the tooth plate 404 to move upward together. Since the tooth plate 404 is engaged with the gear 405, the gear 405 rotates at this time. At the same time, since the gear 405 is engaged with the rack 408, the rotating gear 405 pushes the telescopic cylinder 402 to move upward along the tooth groove 407. The multi-stage telescopic structure allows the total length of the adjustment assembly 4 to be quickly adjusted, and the distance between the knee assist device 1 and the ankle assist device 7 is adjusted to match the user's It adapts to the body and can better fit the user's body structure, play a supporting and auxiliary role, ensure the user's walking posture is correct, and improve the comfort and adaptability of wearing. During the user's walking, the first universal joint 3 and the second universal joint 5 adaptively change the angle between the knee aid 1 and the ankle aid 7 to improve the comfort of wearing. The knee aid 1 and the ankle aid 7 protect the knee joint and ankle joint respectively during the user's walking. When the leg aid is not needed, the adjustment component 4 is completely retracted to reduce the volume of the leg aid, which provides convenience for storage.

[0040] Example 2

[0041] As attached Figure 1 To the attached Figure 5 As shown, this embodiment is basically the same as the previous embodiment, except that the telescopic rod 401 and the telescopic cylinder 402 are connected with a positioning assembly 8;

[0042] The positioning assembly 8 includes a support base 801 fixedly connected to the telescopic cylinder 402, and the support base 801 is rotatably connected to the rotating arm 802, and the rotating arm 802 is fixedly connected to the positioning rod 803. The telescopic rod 401 is provided with a plurality of positioning grooves 804. The positioning rod 803 is inserted into the positioning groove 804 to fix the telescopic rod 401 and the telescopic cylinder 402 together. By inserting the positioning rod 803 into different positioning grooves 804, the total length of the adjustment assembly 4 can be fixed within a suitable range as needed. The positioning rod 803 is slidably connected to the positioning groove 804, and the accommodating cylinder 403 is fixedly installed with an elastic member 805, wherein the elastic member 805 can be an airbag or a spring, and the elastic member 805 provides thrust for the second flexure 807 to rotate the rotating arm 802, thereby keeping the positioning rod 803 inserted in the positioning groove 804, which can prevent the positioning rod 803 from separating from the positioning groove 804 during movement, and the elastic member 805 is against the rotating arm 802.

[0043] Specifically, the positioning rod 803 is an arc-shaped rod, and the positioning groove 804 is an arc-shaped groove. The shapes of the positioning rod 803 and the positioning groove 804 can be well adapted to the rotation of the rotating arm 802. The first bending joint 806 and the second bending joint 807 are respectively provided at both ends of the rotating arm 802. By providing the first bending joint 806, the positioning rod 803 is closer to the positioning groove 804, thereby improving the compactness of the structure. By providing the second bending joint 807, the necessary space is provided for the installation of the elastic member 805. The positioning rod 803 is fixedly connected to the first bending joint 806, and the elastic member 805 is offset against the second bending joint 807.

[0044] As can be seen from the above, by pressing the second bending joint 807, the second bending joint 807 squeezes the elastic part 805. At this time, the rotating arm 802 rotates, and the positioning rod 803 rotates from the positioning slot 804. The telescopic rod 401 can be pulled upward to adjust the total length of the adjustment component 4. When the total length of the adjustment component 4 is adjusted, the second bending joint 807 is released. At this time, the elastic part 805 returns to its original state and applies external force to the second bending joint 807, and drives the rotating arm 802 to reverse. The first bending joint 806 drives the positioning rod 803 to be inserted into the positioning slot 804 to fix the total length of the adjustment component 4. The elastic part 805 continues to apply external force to the second bending joint 807 to prevent the positioning rod 803 from separating from the positioning slot 804 during movement. By inserting the positioning rod 803 into different positioning slots 804, the total length of the adjustment component 4 can be fixed in different ranges as needed.

[0045] Example 3

[0046] As attached Figure 1 To the attached Figure 7 As shown, this embodiment is basically the same as the previous embodiment, except that the knee aid 1 includes an upper guard plate 101, wherein the upper guard plate 101 is fixed to the thigh by a strap, the upper guard plate 101 is fixedly connected to the third base 102, the third base 102 is fixedly connected to the upper support rod 103, the upper support rod 103 is connected to the lower support rod 104, the lower support rod 104 is connected to the fourth base 105, the fourth base 105 is fixedly connected to the lower guard plate 106, wherein the lower guard plate 106 is fixed to the calf by a strap, and the lower guard plate 106 is fixedly connected to the first base 2.

[0047] Specifically, the lower support rod 104 is provided with a side groove 107, and the upper support rod 103 is rotatably connected to the side groove 107, wherein the lower support rod 104 and the upper support rod 103 can rotate according to the movement state, and the side groove 107 can limit the rotation range of the lower support rod 104 and the upper support rod 103.

[0048] Furthermore, an energy absorbing assembly 9 is provided between the lower support rod 104 and the fourth base 105;

[0049] The energy absorption component 9 includes an insertion rod 901, which is fixedly connected to the lower support rod 104. An energy absorption spring 902 is provided on the circumferential side of the insertion rod 901. By providing the energy absorption spring 902, the impact force can be absorbed when the user walks or exercises, the pressure on the lower limb joints is reduced, the risk of injury is reduced, and the comfort and safety of use are improved. One end of the energy absorption spring 902 is fixedly connected to the lower support rod 104, and the fourth base 105 is provided with a receiving groove 903. The insertion rod 901 and the energy absorption spring 902 extend into the receiving groove 903. During exercise, the insertion rod 901 will move downward due to the influence of movement. At this time, the energy absorption spring 902 will deform, absorb energy, provide buffering, and reduce the pressure on the lower limb joints.

[0050] Furthermore, the energy absorption component 9 also includes a threaded rod 904, which is threadedly connected to the fourth base 105 and extends into the accommodating groove 903. One end of the threaded rod 904 extending into the accommodating groove 903 is fixedly connected to a lifting plate 905. Rotating the threaded rod 904 can adjust the height of the lifting plate 905 in the accommodating groove 903. The lifting plate 905 is slidingly connected to the accommodating groove 903. The threaded rod 904 and the lifting plate 905 are provided with a through groove 906, and the insertion rod 901 is slidingly connected to the through groove 906. The other end of the energy absorption spring 902 is fixedly connected to the lifting plate 905. The position of the lifting plate 905 can be adjusted by rotating the threaded rod 904, thereby adjusting the compression degree of the energy absorption spring 902, and then adjusting the energy absorption effect of the energy absorption spring 902, thereby realizing personalized adjustment of the buffering effect.

[0051] Furthermore, the upper guard plate 101 and the lower guard plate 106 are respectively provided with through slots 10 , wherein the provision of the through slots 10 can reduce the weight of the leg aid and improve the air permeability of the knee joint area.

[0052] As can be seen from the above, when the user wears this leg aid and walks, the angle between the upper support rod 103 and the lower support rod 104 changes with the change of the movement state. When the legs are bent, the distance between the upper guard plate 101 and the lower guard plate 106 is reduced, and the insertion rod 901 slides to the depth of the through groove 906. At this time, the energy absorption spring 902 deforms, absorbs energy, provides buffering, and reduces the pressure on the lower limb joints. The user can rotate the threaded rod 904 as needed to adjust the position of the lifting plate 905, thereby adjusting the compression degree of the energy absorption spring 902, and then adjust the energy absorption effect of the energy absorption spring 902, to achieve personalized adjustment of the buffering effect.

[0053] In this leg aid, the knee aid 1 adopts a bionic structure design, and the energy-absorbing spring 902 provides an upward thrust to the lower support rod 104, so that the knee aid 1 first supports the gravity of the upper body of the knee, reduces the pressure on the knee meniscus, and realizes advance support and elastic assistance. It can effectively reduce the pressure of body weight on the lower limbs. On the premise of fully protecting the lower limbs, it helps muscle groups to exercise through the principle of resistance exercise to achieve exercise. It can fully protect the knee joints, calves, ankles and feet. While providing 95 kg of resistance and decompression, it ensures the naturalness and comfort of exercise and improves the user experience.

[0054] In the drawings of the embodiments disclosed in the present invention, only the structures involved in the embodiments disclosed in the present invention are involved. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other.

[0055] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

[0056] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0057] In the description of this specification, the reference terms "one embodiment", "some embodiments", "examples", "specific examples" or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

Claims

1. A leg aid, characterized in that: The invention comprises a knee support device (1), wherein the knee support device (1) is connected to a first base (2), the first base (2) is fixedly connected to a first universal joint (3), the first universal joint (3) is connected to an adjustment component (4), the adjustment component (4) is connected to a second universal joint (5), the second universal joint (5) is fixedly connected to a second base (6), and the second base (6) is fixedly connected to an ankle support device (7); The adjustment assembly (4) comprises a telescopic rod (401), wherein the telescopic rod (401) is slidably connected to a telescopic cylinder (402), wherein the telescopic cylinder (402) is slidably connected to a receiving cylinder (403), wherein the telescopic rod (401) is fixedly connected to a tooth plate (404), wherein the tooth plate (404) is engaged with a gear (405), wherein a mounting groove (406) is provided on a circumferential side of the telescopic cylinder (402), wherein the gear (405) is rotatably connected to the mounting groove (406), wherein the receiving cylinder (403) is provided with a tooth groove (407), wherein a rack (408) is provided in the tooth groove (407), and wherein the rack (408) is engaged with the gear (405).

2. A leg support device according to claim 1, characterized in that: The tooth plate (404) is fixedly connected to a guide slide block (409), the accommodating cylinder (403) is provided with a guide slide groove (410), and the guide slide block (409) and the guide slide groove (410) are slidably connected.

3. A leg support device according to claim 2, characterized in that: The telescopic rod (401) is fixedly connected to the first universal joint (3), and the accommodating cylinder (403) is fixedly connected to the second universal joint (5).

4. A leg support device according to claim 3, characterized in that: The telescopic rod (401) and the telescopic cylinder (402) are connected with a positioning assembly (8); The positioning assembly (8) comprises a support base (801) fixedly connected to the telescopic cylinder (402); the support base (801) is rotatably connected to a rotating arm (802); the rotating arm (802) is fixedly connected to a positioning rod (803); the telescopic rod (401) is provided with a plurality of positioning grooves (804); the positioning rod (803) is slidably connected to the positioning grooves (804); an elastic member (805) is fixedly installed on the accommodating cylinder (403); and the elastic member (805) abuts against the rotating arm (802).

5. A leg support device according to claim 4, characterized in that: The positioning rod (803) is an arc-shaped rod, the positioning groove (804) is an arc-shaped groove, and the two ends of the rotating arm (802) are respectively provided with a first bending joint (806) and a second bending joint (807), the positioning rod (803) is fixedly connected to the first bending joint (806), and the elastic member (805) is against the second bending joint (807).

6. A leg support device according to claim 1 or 5, characterized in that: The knee assist device (1) comprises an upper guard plate (101), wherein the upper guard plate (101) is fixedly connected to a third base (102), wherein the third base (102) is fixedly connected to an upper support rod (103), wherein the upper support rod (103) is connected to a lower support rod (104), wherein the lower support rod (104) is connected to a fourth base (105), wherein the fourth base (105) is fixedly connected to a lower guard plate (106), and wherein the lower guard plate (106) is fixedly connected to the first base (2).

7. A leg support device according to claim 6, characterized in that: The lower support rod (104) is provided with a side groove (107), and the upper support rod (103) is rotatably connected to the side groove (107).

8. The leg support device according to claim 7, characterized in that: An energy absorbing component (9) is provided between the lower support rod (104) and the fourth base (105); The energy absorption assembly (9) includes an insertion rod (901), the insertion rod (901) is fixedly connected to the lower support rod (104), an energy absorption spring (902) is sleeved on the circumference of the insertion rod (901), one end of the energy absorption spring (902) is fixedly connected to the lower support rod (104), and the fourth base (105) is provided with a receiving groove (903), and the insertion rod (901) and the energy absorption spring (902) extend into the receiving groove (903).

9. The leg support device according to claim 8, characterized in that: The energy absorbing assembly (9) further comprises a threaded rod (904), wherein the threaded rod (904) is threadedly connected to the fourth base (105) and extends into the receiving groove (903), and one end of the threaded rod (904) extending into the receiving groove (903) is fixedly connected to a lifting plate (905), and the lifting plate (905) is slidably connected to the receiving groove (903), and a through groove (906) is provided on the threaded rod (904) and the lifting plate (905), and the insertion rod (901) is slidably connected to the through groove (906), and the other end of the energy absorbing spring (902) is fixedly connected to the lifting plate (905).

10. The leg support device according to claim 9, characterized in that: The upper guard plate (101) and the lower guard plate (106) are respectively provided with through slots (10).

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