Shifting machine

Abstract

The utility model relates to the technical field of auxiliary displacement instruments and equipment, in particular to a displacement machine. A shifting machine comprises a base, a supporting frame, a knee leaning assembly, a holding arm assembly and a first power mechanism, the supporting frame is fixed to the base, a first through groove is formed in the supporting frame, the knee leaning assembly comprises knee leaning plates located on the two sides of the supporting frame and a fixing rod connected with the knee leaning plates on the two sides, and the fixing rod penetrates through the first through groove; a gap for the fixing rod to act exists between the side wall of the first through groove and the fixing rod, a supporting plate is slidably arranged on the supporting frame, the end of the supporting plate is fixedly connected with the embracing arm assembly, and the first power mechanism drives the driving rod to rotate around the rotating shaft and drives the supporting plate to slide on the supporting frame. The first power mechanism drives the supporting plate to slide on the supporting frame to achieve up-and-down movement of the embracing arm assembly and drives the driving rod to rotate around the rotating shaft to achieve front-and-back movement of the knee backup plate at the same time, actions of the two are linked, and operation is easier and more convenient.

Description

Technical Field

[0001] This utility model relates to the field of auxiliary displacement equipment technology, and in particular to a displacement machine. Background Technology

[0002] With the rapid pace of social development, the number of elderly people and those with mobility impairments is increasing. Their daily lives often require assistance, such as standing up, walking, using the toilet, or bathing, where they need support to maintain balance. To help people with mobility impairments walk normally, assistive devices such as mobility aids are often used. However, the arm and knee support components on existing mobility aids usually require separate adjustments. Adjusting the height of the arm support component first, and then adjusting the fore-and-aft position of the knee support component, is quite cumbersome. Summary of the Invention

[0003] To address the issues of existing transfer machines where the arm and knee support components often require separate adjustments, have poor linkage, and are cumbersome to operate, this invention proposes a transfer machine that uses a first power mechanism to drive a support plate to slide on a support frame, thereby moving the arm and knee support components up and down while simultaneously driving a drive rod to rotate around a rotation axis, thus moving the knee support plate forward and backward. This linkage of the two actions makes operation simpler.

[0004] To achieve the above objectives, the technical solution of this utility model is as follows:

[0005] A transfer machine includes a base, a support frame, a knee rest assembly, a grab arm assembly, and a first power mechanism;

[0006] The support frame is fixed to the base, and a first through slot is provided on the support frame. The knee rest assembly includes knee rest plates located on both sides of the support frame and a fixing rod connecting the two knee rest plates. The fixing rod passes through the first through slot, and there is a gap between the side wall of the first through slot and the fixing rod to allow the fixing rod to move. The drive rod rotates around the rotation axis, so the fixing rod also moves in an arc inside the first through slot. Therefore, there is a gap between the outer side wall of the fixing rod and the first through slot, leaving space for the movement of the fixing rod.

[0007] A mounting base is fixed to the fixed rod, a second connecting rod is fixed to the mounting base, a rotating shaft is fixed to the support frame, and a drive rod is rotatably connected to the rotating shaft. The second connecting rod passes through the end of the drive rod, and a first spring is fixed to the end of the drive rod near the end of the second connecting rod. The end of the first spring is connected and fixed to the support frame, so that the mounting base moves in tandem with the drive rod.

[0008] A support plate is slidably mounted on the support frame, and the end of the support plate is fixedly connected to the arm assembly. The first power mechanism drives the drive rod to rotate around the rotation axis and causes the support plate to slide on the support frame.

[0009] Furthermore, the first power mechanism includes an electric push rod and a jacking shaft. The electric push rod seat is hinged to the support frame, and the telescopic end of the electric push rod is hinged to the jacking shaft. The support frame is provided with a first sliding groove, within which the jacking shaft can slide. The support plate is fixed to the jacking shaft. When the jacking shaft moves upward under the drive of the electric push rod, it contacts the lower side of the end of the drive rod away from the second connecting rod. The support plate is fixed to the jacking shaft, and the jacking shaft can slide within the first sliding groove, enabling the support plate to slide on the support frame.

[0010] Furthermore, the lower part of the first chute is vertically arranged, and the upper part is bent towards the side closer to the drive rod.

[0011] Furthermore, a first connecting rod is fixed on the mounting base, and a third connecting rod is fixed inside the support frame. The third connecting rod is located above the first connecting rod, and a connecting plate is hinged to the third connecting rod. The end of the connecting plate away from the third connecting rod is hinged to the first connecting rod. This ensures the stability of the mounting base during rotation.

[0012] Furthermore, a limiting rod is fixed within the support frame to limit the end of the drive rod away from the second connecting rod. The limiting rod is located below the drive rod and in contact with it, cooperating with the first spring to keep the drive rod and mounting base in this position.

[0013] Furthermore, the fixing rod includes two first rods fixedly connected to the knee rest plate and a second rod connecting the two first rods, the position of the first rods relative to the second rod being adjustable to accommodate different users.

[0014] Furthermore, the arm support assembly includes a chest rest base plate fixed to the end of the support plate away from the support frame and rotating arm support plates hinged to both ends of the chest rest base plate. The rotating arm support plates are located on the side of the chest rest base plate away from the support plate. Two sliding push plates are slidably arranged on the side of the chest rest base plate away from the support plate. The two sliding push plates are horizontally arranged on the chest rest base plate. The arm support assembly also includes a second power mechanism, which drives the two sliding push plates to move closer or further apart, causing the ends of the sliding push plates to move away from or contact the rotating arm support plates. A second spring is provided on the rotating arm support plate, with one end of the second spring connected to the chest rest base plate. The second spring is used to provide an inward retraction force to the rotating arm support plate, facilitating its retraction after unfolding.

[0015] Furthermore, both sliding push plates are provided with through holes, and the chest rest base plate is provided with a second sliding groove. A sliding rod is fixed in the through hole, with one end of the sliding rod extending out of the through hole and into the second sliding groove, allowing it to slide within the second sliding groove. This ensures the stability of the sliding push plates during the sliding process.

[0016] Furthermore, the second power mechanism includes a motor, two racks and a gear. The motor is fixed to the base plate of the chest rest by a mounting plate. The two racks are respectively fixed to two sliding push plates. The gear is connected and fixed to the output end of the motor. The gear is located between the two racks and meshes with the two racks.

[0017] Furthermore, both the mounting plate and the second power mechanism are located on the side of the base plate away from the support plate. The mounting plate is positioned between the motor and the rack. A limiting plate is fixed to the side of the mounting plate near the rack. The limiting plate has limiting portions at both its upper and lower ends. The longitudinal section of the limiting plate is a transverse "U" shape, and the rack is located between the two limiting portions. The limiting portion at the upper end of the limiting plate contacts the upper side of the rack located above, and the limiting portion at the lower end of the limiting plate contacts the lower side of the rack located below.

[0018] The beneficial effects of this utility model through the above technical solution are as follows:

[0019] 1. In this utility model, the first power mechanism drives the support plate to slide on the support frame, thereby realizing the up-and-down movement of the armrest assembly. At the same time, it drives the drive rod to rotate around the rotation axis, causing the fixed rod, which is fixedly connected to the mounting base, to make arc movements in the first through groove. This causes the knee rest plate to move closer to the user's lower limbs, thereby realizing the forward and backward movement of the knee rest plate. This provides better support for the lower limbs and ensures the safety of the user when standing. The knee rest assembly and the armrest assembly are linked together without the need for multiple operations. The up-and-down position adjustment of the armrest assembly and the forward and backward position adjustment of the knee rest assembly can be completed with only one operation.

[0020] 2. In this utility model, the lower part of the first slide groove is vertically arranged and the upper part is bent towards the side close to the drive rod. During the process of the arm support assembly moving upward with the connecting plate, there will also be a movement towards the knee support assembly, which can better match the human body structure and improve the comfort of using this device.

[0021] 3. In this utility model, a first connecting rod is fixed on the mounting base of the knee rest assembly, and a third connecting rod is fixed inside the support frame. The two ends of the connecting plate are respectively hinged to the first connecting rod and the third connecting rod, so that the mounting base drives the connecting plate to rotate when it rotates, thereby ensuring the stability of the mounting base during the rotation process.

[0022] 4. In this utility model, the two ends of the chest rest base plate in the arm support assembly are hinged with rotating arm support plates. Two sliding push plates are slidably arranged on one side of the chest rest base plate. The second power mechanism drives the two sliding push plates to move closer or further apart, pushing the rotating arm support plates hinged at both ends of the chest rest base plate open. The second spring is used to provide the rotating arm support plates with an inward retraction force, which facilitates their retraction after unfolding. This arm support assembly can provide a more convenient unfolding angle and can accommodate more users.

[0023] 5. The sliding push plate of the arm assembly of this utility model has a through hole, and the chest-supporting bottom plate has a second sliding groove. A sliding rod is fixed in the through hole. One end of the sliding rod extends into the second sliding groove and can slide in the second sliding groove. At the same time, a limit plate is fixed on the side of the mounting plate near the rack to limit the movement of the rack, thereby ensuring the stability of the sliding push plate when it slides. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of a shifting machine according to the present invention;

[0025] Figure 2 This is a schematic diagram of the structure of a hidden housing for a transfer machine according to the present invention;

[0026] Figure 3 This utility model relates to a shifting machine. Figure 2 Enlarged view of the structure at point A in the middle;

[0027] Figure 4 This utility model relates to a shifting machine. Figure 2 A partial structural diagram showing the central support frame concealing one side of the vertical panel.

[0028] Figure 5 This utility model relates to a shifting machine. Figure 4 Enlarged view of the structure at point B;

[0029] Figure 6 This is a schematic diagram of the structure of a knee support assembly for a transfer machine according to the present invention;

[0030] Figure 7 This is a side view of the support frame of a shifting machine according to the present invention;

[0031] Figure 8 This is a schematic diagram of the structure of the arm assembly of a transfer machine according to the present invention;

[0032] Figure 9 This is a structural schematic diagram of the hidden chest cushion plate of the arm assembly of a transfer machine according to the present invention.

[0033] Figure 10 This utility model relates to a shifting machine. Figure 9 Enlarged view of the structure at point A in the middle;

[0034] Figure 11 This is a partial structural cross-sectional view of the mounting plate, limiting plate, and sliding push plate of the arm assembly of a transfer machine according to this utility model.

[0035] Figure 12 This is a schematic diagram of the gear and rack meshing structure of the arm assembly of a shifting machine according to the present invention.

[0036] Figure 13This is a schematic diagram of the chest support base plate of the arm assembly of a transfer machine according to the present invention.

[0037] Figure 14 This is a schematic diagram of the rotating arm plate of a transfer machine arm assembly according to the present invention.

[0038] In the attached diagram, the numbers are as follows: 1 is the transfer machine, 2 is the base, 3 is the caster wheel, 4 is the handrail, 6 is the outer shell, and 7 is the limiting plate.

[0039] 5 is the armrest assembly, 11 is the chest backrest base plate, 111 is the second slide groove, 112 is the hinge seat, 12 is the rotating armrest plate, 121 is the abutment part, 122 is the mounting part, 123 is the second hinge shaft, 13 is the sliding push plate, 131 is the through hole, 132 is the extension part, 133 is the connector, 14 is the second spring, 15 is the sliding rod, 16 is the mounting plate, 161 is the motor, 162 is the rack, 163 is the gear, 17 is the support column, 18 is the silent wheel, and 19 is the chest backrest cushion plate;

[0040] 20 is the support frame, 21 is the first through groove, 22 is the third connecting rod, 23 is the rotating shaft, 24 is the connecting plate, 25 is the fourth connecting rod, 26 is the first sliding groove, and 27 is the limiting rod;

[0041] 31 is a knee rest plate, 32 is a fixed rod, 321 is a first rod body, 322 is a second rod body, 323 is a first sleeve, 324 is a second sleeve, 33 is a mounting base, 34 is a first connecting rod, 35 is a second connecting rod, 36 is a drive rod, 361 is a second through groove, and 37 is a first spring.

[0042] 41 is an electric push rod, 42 is a push shaft, 43 is the first hinge shaft, and 50 is a support plate. Detailed Implementation

[0043] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0044] Example 1

[0045] like Figures 1 to 7 As shown, this embodiment provides a transfer machine, including a base 2, a support frame 20, a knee rest assembly, a cradle arm assembly 5, and a first power mechanism;

[0046] The support frame 20 is fixed on the base 2. The support frame 20 includes two opposing upright plates. The lower part of the base 2 is provided with multiple casters 3. The knee rest assembly, the armrest assembly 5 and the first power mechanism are all mounted on the support frame 20.

[0047] refer to Figures 2-7The knee support assembly includes knee support plates 31 located on both sides of the support frame 20 and a fixing rod 32 connecting the two knee support plates 31. Each of the two upright plates of the support frame 20 has a first through groove 21 for the fixing rod 32 to pass through. There is a gap between the side wall of the first through groove 21 and the fixing rod 32 to allow the fixing rod 32 to move. There is a gap between the outer side wall of the fixing rod 32 and the side wall of the first through groove 21 to allow space for the movement of the fixing rod 32.

[0048] A mounting base 33 is fixed to the fixing rod 32. The longitudinal section of the mounting base 33 is U-shaped. The fixing rod 32 is fixedly connected to the mounting base 33 by bolts. The mounting base 33 is located between the two upright plates of the support frame 20. A horizontal second connecting rod 35 is fixed to the mounting base 33. A horizontal rotating shaft 23 is fixed to the support frame 20. A driving rod 36 is rotatably connected to the rotating shaft 23. The second connecting rod 35 passes through the end of the driving rod 36. A second through groove 361 is opened at the end of the driving rod 36. The second connecting rod 35 passes through the second through groove 361 and is fixed to the mounting base 33.

[0049] A first spring 37 is fixed to the end of the drive rod 36 near the second connecting rod 35, and the end of the first spring 37 is connected and fixed to the support frame 20. Specifically, a horizontal fourth connecting rod 25 is fixed on the support frame 20, and the fourth connecting rod 25 is located above the mounting base 33. The end of the first spring 37 is connected and fixed to the fourth connecting rod 25. The first spring 37 pulls one end of the drive rod 36.

[0050] A limiting rod 27 is also fixed within the support frame 20. The limiting rod 27 is used to limit the end of the drive rod 36 away from the second connecting rod 35. (Reference) Figure 5 The limiting rod 27 is located below the driving rod 36 and in contact with the driving rod 36. The first spring 37 pulls one end of the driving rod 36, and the limiting rod 27 abuts against the lower side of the other end of the driving rod 36, so that the driving rod 36 can remain in this position.

[0051] refer to Figure 5 The mounting base 33 is fixed with a first connecting rod 34, and the support frame 20 is fixed with a third connecting rod 22. The third connecting rod 22 is located above the first connecting rod 34. A connecting plate 24 is hinged to the third connecting rod 22, and the end of the connecting plate 24 away from the third connecting rod 22 is hinged to the first connecting rod 34.

[0052] In this embodiment, there are two first connecting rods 34 and two third connecting rods 22, and four connecting plates 24. The connecting plates 24 also rotate when the drive rod 36 rotates. The rotation center of the connecting plates 24 is the third connecting rod 22, so that the mounting base 33 and the fixing rod 32 remain stable during rotation.

[0053] refer to Figure 6 The fixing rod 32 includes two first rods 321 fixedly connected to the knee rest plate 31 and a second rod 322 connecting the two first rods 321. The position of the first rod 321 relative to the second rod 322 is adjustable.

[0054] Specifically, a first sleeve 323 is fitted onto the first rod 321, and a second sleeve 324 is fitted onto the second rod 322. The end of the second sleeve 324 away from the second rod 322 is fixedly connected to the first sleeve 323. The first rod 321 has multiple first through holes, and the first sleeve 323 has a second through hole that matches the first through holes. Bolts are inserted through the first and second through holes to connect and fix the first rod 321 and the first sleeve 323. The second rod 322 has multiple third through holes, and the second sleeve 324 has a fourth through hole that matches the third through holes. Bolts are inserted through the third and fourth through holes to connect and fix the second rod 322 and the second sleeve 324.

[0055] The first sleeve 323 and the second sleeve 324 are fixedly connected, forming a "T" shape after connection. The second sleeve 324 is sleeved on both ends of the second rod 322. The position of the first sleeve 323 on the first rod 321 is adjustable and used to adjust the front and back position of the knee rest plate 31. The position of the second sleeve 324 on the second rod 322 is adjustable and used to adjust the left and right position of the knee rest plate 31.

[0056] refer to Figures 2-5 A support plate 50 is slidably disposed on the support frame 20, and the end of the support plate 50 is fixedly connected to the arm assembly 5; the first power mechanism drives the drive rod 36 to rotate around the rotating shaft 23 and drives the support plate 50 to slide on the support frame 20.

[0057] Specifically, the first power mechanism includes an electric push rod 41 and a push shaft 42. The electric push rod seat of the electric push rod 41 is hinged to the support frame 20 via a first hinge shaft 43 fixed to the two upright plates. The telescopic end of the electric push rod 41 is hinged to the push shaft 42 (see reference). Figure 4 The support frame 20 is provided with a first sliding groove 26, and the push shaft 42 can slide within the first sliding groove 26; the lower part of the first sliding groove 26 is vertically arranged, and the upper part is bent towards the side close to the drive rod 36. In this state, when the push shaft 42 moves from bottom to top along the first sliding groove 26, it first moves vertically upward, and then tilts upward to contact the drive rod 36;

[0058] In this embodiment, two first slide grooves 26 are provided on a vertical plate. A push shaft 42 is slidably arranged in each of the two first slide grooves 26. Both push shafts 42 pass through the support plate 50. One of the push shafts 42 is hinged to the telescopic end of the electric push rod 41. When the push shaft 42 moves upward under the drive of the electric push rod 41, it contacts the lower side of the end of the drive rod 36 away from the second connecting rod 35.

[0059] The end of the support plate 50 is fixedly connected to the arm assembly 5. When the support plate 50 moves, it drives the arm assembly to move, so that the first power mechanism drives the support plate 50 to slide on the support frame 20 to realize the up and down movement of the arm assembly 5, while driving the drive rod 36 to rotate around the rotating shaft 23 to realize the back and forth movement of the knee rest plate 31.

[0060] In this embodiment, the drive rod 36 rotates around the rotation axis 23, so the fixed rod 32 moves in an arc inside the first through groove 21. In the design requirements of this solution, when the drive rod 36 rotates around the rotation axis 23 at a certain angle, the distance that the end of the drive rod 36 away from the support plate 50 moves laterally in the arc motion trajectory is much greater than the distance that it moves vertically. This is due to the circular motion itself. In this solution, what is required is more the lateral movement of the knee rest plate 31.

[0061] When not in use, this device is in a state of... Figure 1 In the indicated state, when the user stands on the base 2 of the transfer machine 1, the user's chest rests against the chest support pad 19 of the armrest assembly 5. At this time, the operator activates the electric push rod 41, and the push shaft 42 hinged to the telescopic end of the electric push rod 41 moves upward along the first slide groove 26. During this process, the push shaft 42 contacts the lower side of the drive rod 36, causing the drive rod 36 to rotate around the rotation axis 23. At this time, the second connecting rod 35 connected to the end of the drive rod 36 causes the mounting base 33 and the fixed rod 32 to rotate counterclockwise around the rotation axis 23 (e.g., Figure 5 This causes the knee support plate 31, which is fixed to the end of the fixed rod 32, to move towards the lower limbs of the human body. When the knee support assembly and the arm support assembly reach the appropriate position at the same time, the electric push rod 41 stops moving. The user holds the handrail 4 on the arm support assembly 5, and the knees of the human body rest on the knee support plate 31 and remain in this position. At this time, the operator can push the handrail 4 on the support frame 20 to transfer the transfer machine 1 and the user to another position.

[0062] Example 2

[0063] refer to Figures 8 to 14This embodiment provides a lifting arm assembly for a transfer machine. The lifting arm assembly 5 includes a chest support base plate 11 fixed to one end of the support plate 50 away from the support frame 20 and a rotating lifting arm plate 12 hinged to both ends of the chest support base plate 11. The rotating lifting arm plate 12 is located on the side of the chest support base plate 11 away from the support plate 50. The two ends of the chest support base plate 11 are fixed with hinge seats 112. The mounting part 122 at the end of the rotating lifting arm plate 12 is connected to the hinge seat 112 through a second hinge shaft 123.

[0064] Two sliding push plates 13 are slidably arranged on the side of the chest rest base plate 11 away from the support plate 50, and the two sliding push plates 13 are horizontally arranged on the chest rest base plate 11.

[0065] refer to Figure 9 and Figure 10 Both sliding push plates 13 are provided with through holes 131, and the chest rest base plate 11 is provided with a second sliding groove 111. A sliding rod 15 is fixed in the through hole 131. One end of the sliding rod 15 extends out of the through hole 131 and into the second sliding groove 111 and can slide in the second sliding groove 111.

[0066] Each sliding push plate 13 has two through holes 131, and the second sliding groove 111 on the chest rest base plate 11 has four grooves, two at the top and two at the bottom (see reference). Figure 7 In this embodiment, the sliding rod 15 is a screw, which is fixed in the through hole 131 by a nut. The other end of the sliding rod 15 enters the second slide groove 111 and extends out of the second slide groove 111. Its end is also fixed with a nut, so as to realize the stable sliding of the sliding push plate 13 on the chest base plate 11.

[0067] The arm-mounted assembly 5 also includes a second power mechanism, which drives the two sliding push plates 13 to move closer or further apart, causing the ends of the sliding push plates 13 to move away from or contact the rotating arm-mounted plate 12. (Refer to...) Figure 9 , Figure 10 and Figure 12 The second power mechanism includes a motor 161, two racks 162 and a gear 163. The motor 161 is fixed to the chest base plate 11 by a mounting plate 16. There is a gap between the two sliding push plates 13. The two racks 162 are respectively fixed on the two sliding push plates 13. The gear 163 is connected and fixed to the output end of the motor 161. The gear 163 is located between the two racks 162 and meshes with the two racks 162.

[0068] In this embodiment, the mounting plate 16 and the second power mechanism are both located on the side of the chest rest base plate 11 near the rotating arm plate 12. The mounting plate 16 is located between the motor 161 and the rack 162. The mounting plate 16 is fixed to the chest rest base plate 11 by bolts. The output end of the motor 161 passes through the mounting plate 16 and a gear 163 is fixed at its end. The two racks 162 are arranged horizontally up and down.

[0069] The rack 162 is fixed to the side of the sliding push plate 13 near the chest rest base plate 11. The sliding rod 15 passes through the sliding push plate 13 and the rack 162 in sequence and then extends into the second sliding groove 111. The other side of the rack 162 contacts the chest rest base plate 11.

[0070] refer to Figure 9 , Figure 10 and Figure 11 A limiting plate 7 is fixed to the side of the mounting plate 16 near the rack 162. The limiting plate 7 has limiting portions at both its upper and lower ends. The longitudinal section of the limiting plate 7 is a transverse "U" shape, with the rack 162 located between the two limiting portions. The upper limiting portion of the limiting plate 7 contacts the upper side of the rack 162 located above, and the lower limiting portion of the limiting plate 7 contacts the lower side of the rack 162 located below. The limiting plate 7 cooperates with the sliding rod 15 to ensure the stable sliding of the sliding push plate 13.

[0071] refer to Figure 9 The rotating armrest plate 12 is equipped with a second spring 14, one end of which is connected to the chest rest base plate 11. Specifically, both the chest rest base plate 11 and the rotating armrest plate 12 are fixed with support columns 17, and support columns 17 are provided on both sides of the rotating armrest plate 12. The ends of the second spring 14 are fixed to the support columns 17. The second spring 14 pulls the rotating armrest plate 12 to the retracted position (e.g., Figure 9 (This prevents it from opening when not in use.)

[0072] In this embodiment, when the motor 161 starts, it drives the gear 163 to rotate, which in turn drives the rack 162 to move away from each other. When it reaches the appropriate position, the motor 161 stops working, and its output shaft will not continue to rotate, so that the rack 162 can always stay in this appropriate position. This motor 161 can be made using existing technology, so it will not be described in detail.

[0073] To ensure the stable rotation of the rotating arm plate 12, an abutment portion 121 is provided on the side of the rotating arm plate 12 near the chest-bottom plate 11 (e.g., Figure 14 A silent wheel 18 is rotatably mounted on one end of the sliding push plate 13 near the rotating arm plate 12. The silent wheel 18 contacts the abutment portion 121 of the rotating arm plate 12 when the two sliding push plates 13 move away from each other. A connector 133 is fixed to each of the two sliding push plates 13 at their far ends, and a silent wheel 18 is rotatably mounted on the connector 133. The silent wheel 18 is made of PU polyurethane material, which effectively reduces noise.

[0074] The two rotating arm plates 12 are located on the same side of the chest-support base plate 11 and are on the same horizontal line. One end of the upper sliding push plate 13 is on the same horizontal line as the other rotating arm plate 12. The lower sliding push plate 13 has an extension 132 on one end, which is on the same horizontal line as the other rotating arm plate 12. To ensure that the lower sliding push plate 13 can contact the abutment part 121 on the rotating arm plate 12, an upwardly extending extension 132 is provided on one end of the lower sliding push plate 13. The extension 132 is fixed with a connector 133. A preset gap is provided between the extension 132 of the lower sliding push plate 13 and one end of the upper sliding push plate 13 to avoid positional interference when they are close to each other.

[0075] A chest cushion 19 is provided on the side of the chest support base plate 11 near the rotating armrest plate 12. The chest cushion 19 is used for the human chest to rest against, covering the other parts on the chest support base plate 11.

[0076] When using this arm-mounted assembly, the gear 163 fixed on the output shaft of the motor 161 drives the upper and lower racks 162 to move away from each other, thereby causing the sliding rod 15 on the sliding push plate 13 to slide in the second slide groove 111. At this time, the silent wheel 18 on the end connector 133 of the sliding push plate 13 contacts the side of the abutment part 121, thereby causing the rotating arm plate 12 hinged to both ends of the chest rest base plate 11 to open outward. After opening to a certain angle, the motor 161 is turned off, and the rotating arm plate 12 remains in this position. In this state, the output shaft of the motor 161 no longer rotates, and the second spring 14 pulls the rotating arm plate 12 to prevent it from opening outward again, thus completing the opening of the rotating arm plate 12. This allows for a more convenient unfolding angle, accommodating more users.

[0077] The embodiments described above are merely preferred embodiments of this utility model and are not intended to limit the scope of implementation of this utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the patent claims of this utility model should be included within the scope of the patent application of this utility model.

Claims

1. A shift machine characterized by, It comprises a base (2), a support frame (20), a knee leaning assembly, an arm embracing assembly (5) and a first power mechanism; The support frame (20) is fixed on the base (2), and a first through slot (21) is formed in the support frame (20); The knee leaning assembly comprises knee leaning plates (31) located on both sides of the support frame (20) and a fixing rod (32) connecting the knee leaning plates (31) on both sides, the fixing rod (32) penetrating through the first through slot (21), and a gap for the action of the fixing rod (32) being formed between the side wall of the first through slot (21) and the fixing rod (32). A mounting seat (33) is fixed on the fixing rod (32), a second connecting rod (35) is fixed on the mounting seat (33), a rotating shaft (23) is fixed on the support frame (20), a driving rod (36) is rotatably connected to the rotating shaft (23), and the second connecting rod (35) penetrates through the end of the driving rod (36). A first spring (37) is fixed to the end of the driving rod (36) close to the second connecting rod (35), and the end of the first spring (37) is fixedly connected with the support frame (20). A support plate (50) is slidably arranged on the support frame (20), and the end of the support plate (50) is fixedly connected with the arm embracing assembly (5). The first power mechanism drives the driving rod (36) to rotate around the rotating shaft (23) and drives the support plate (50) to slide on the support frame (20).

2. The shifting machine of claim 1, wherein, The first power mechanism comprises an electric push rod (41) and a pushing shaft (42), the electric push rod seat of the electric push rod (41) is hinged to the support frame (20), the telescopic end of the electric push rod (41) is hinged to the pushing shaft (42), a first sliding groove (26) is arranged on the support frame (20), the pushing shaft (42) can slide in the first sliding groove (26), the support plate (50) is fixed on the pushing shaft (42), and when the pushing shaft (42) is driven by the electric push rod (41) to move upward, the pushing shaft (42) contacts the lower side of the end of the driving rod (36) away from the second connecting rod (35).

3. A shifting machine according to claim 2, wherein, The lower part of the first sliding groove (26) is vertically arranged, and the upper part is arranged to be curved towards the side close to the driving rod (36).

4. The shifting machine of claim 1, wherein, A first connecting rod (34) is fixed on the mounting seat (33), a third connecting rod (22) is fixed in the support frame (20), the third connecting rod (22) is located above the first connecting rod (34), a connecting plate (24) is hinged to the third connecting rod (22), and the end of the connecting plate (24) away from the third connecting rod (22) is hinged to the first connecting rod (34).

5. The shifting machine of claim 1, wherein, A limiting rod (27) is further fixed in the support frame (20), and the limiting rod (27) is used for limiting the end of the driving rod (36) away from the second connecting rod (35).

6. The shifting machine of claim 1, wherein, The fixing rod (32) comprises two first rod bodies (321) fixedly connected with the knee leaning plates (31) and a second rod body (322) connecting the two first rod bodies (321), and the positions of the first rod bodies (321) relative to the second rod body (322) are adjustable.

7. The shifting machine of claim 1, wherein, The arm embracing assembly (5) comprises a chest rest bottom plate (11) fixed at one end of the support plate (50) away from the support frame (20) and a rotating arm embracing plate (12) hinged at two ends of the chest rest bottom plate (11), and the rotating arm embracing plate (12) is located at the side of the chest rest bottom plate (11) away from the support plate (50); Two sliding push plates (13) are slidingly arranged at the side of the chest rest bottom plate (11) away from the support plate (50), and the two sliding push plates (13) are horizontally arranged on the chest rest bottom plate (11), the arm embracing assembly (5) further comprises a second power mechanism, the second power mechanism drives the two sliding push plates (13) to move towards or away from each other, so that the end of the sliding push plate (13) is away from or contacts the rotating arm embracing plate (12), and the rotating arm embracing plate (12) is provided with a second spring (14), one end of the second spring (14) is connected to the chest rest bottom plate (11).

8. A shifting machine according to claim 7, wherein, Two sliding push plates (13) are slidingly arranged at the side of the chest rest bottom plate (11) away from the support plate (50), and the two sliding push plates (13) are horizontally arranged on the chest rest bottom plate (11), the arm embracing assembly (5) further comprises a second power mechanism, the second power mechanism drives the two sliding push plates (13) to move towards or away from each other, so that the end of the sliding push plate (13) is away from or contacts the rotating arm embracing plate (12), and the rotating arm embracing plate (12) is provided with a second spring (14), one end of the second spring (14) is connected to the chest rest bottom plate (11).

9. The shifting machine of claim 7, wherein, The second power mechanism comprises a motor (161), two racks (162) and a gear (163), the motor (161) is fixed on the chest rest bottom plate (11) through a mounting plate (16), the two racks (162) are fixed on the two sliding push plates (13) respectively, the gear (163) is connected and fixed with the output end of the motor (161), and the gear (163) is located between the two racks (162) and meshes with the two racks (162).

10. The shifting machine of claim 9, wherein, The mounting plate (16) and the second power mechanism are located at the side of the chest rest bottom plate (11) away from the support plate (50), the mounting plate (16) is located between the motor (161) and the rack (162), one side of the mounting plate (16) close to the rack (162) is fixed with a limiting plate (7), the limiting plate (7) is provided with limiting portions at the upper and lower ends, the longitudinal section of the limiting plate (7) is in the shape of a horizontally arranged "U", and the rack (162) is located between the two limiting portions.

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