Movable joint for sitting and treading trainer and sitting and treading trainer

Abstract

The invention provides a movable joint for a sitting and treading trainer, the movable joint is used for connecting a rocker arm to a supporting column, the movable joint comprises a supporting column connecting piece, a rocker arm connecting piece and a middle swinging piece, and the supporting column connecting piece is used for being connected with the supporting column; the rocker connecting piece is connected with a rocker; the middle swing piece is rotationally connected with the supporting column connecting piece and the rocker arm connecting piece, and the rotating axis, rotating relative to the middle swing piece, of the rocker arm connecting piece is perpendicular to the rotating axis, rotating relative to the supporting column connecting piece, of the middle swing piece. According to the movable joint for the sitting and treading trainer, the rocker arm can swing front and back and left and right relative to the supporting column, and more use modes can be achieved to meet different requirements of users. The invention further provides a sitting and treading trainer.

Description

Technical Field

[0001] The invention relates to the field of training equipment, in particular to an active joint for a sit-and-step trainer and the sit-and-step trainer. Background Art

[0002] The seated pedal trainer is a piece of fitness equipment where the user can sit on a chair and place their hands and / or feet on the swing arms of the seated pedal trainer to swing back and forth, thereby exercising their arms and / or legs.

[0003] However, the current seated pedal trainer, as a home fitness equipment, can only perform a forward and backward swinging mode, has a single function, and cannot meet the needs of users. Summary of the invention

[0004] In order to overcome the shortcomings of the prior art, the present invention provides a movable joint for a sit-and-sit trainer, which enables the rocker arm to swing forward and backward and left and right relative to the support column, and can achieve more usage modes to meet the different needs of users. The present invention also provides a sit-and-sit trainer.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A movable joint for a sit-and-step trainer, used for connecting a rocker arm to a support column, comprising:

[0007] A support column connector, the support column connector is used to connect to the support column;

[0008] A rocker arm connecting piece, the rocker arm connecting piece is used to be connected to the rocker arm;

[0009] And an intermediate swinging member, which is rotatably connected to the support column connecting member and the rocker arm connecting member respectively, and the rotation axis of the rocker arm connecting member relative to the intermediate swinging member is perpendicular to the rotation axis of the intermediate swinging member relative to the support column connecting member.

[0010] With the above technical solution, since the rocker arm connecting member can rotate relative to the intermediate swing member, the intermediate swing member can rotate relative to the support column connecting member, and the rotation axis of the rocker arm connecting member relative to the intermediate swing member is perpendicular to the rotation axis of the intermediate swing member relative to the support column connecting member, the rocker arm connecting member can move forward and backward, left and right, and in a combined direction relative to the support column connecting member, that is, the rocker arm installed on the rocker arm connecting member can move in the forward and backward, left and right, and in a combined direction relative to the support column;

[0011] The above technical solution enables users to use the seated training device in more situations. For example, when the rocker arm connector is provided with an upper swing arm, the user can sit on a chair and then hold the hand on the gripping part of the upper swing arm to swing forward and backward to perform arm swing training, or swing left and right to train the arms and chest expansion. Of course, the user can also perform a combination of forward and backward and left and right movements, that is, swing forward and backward while swinging left and right to present an arc-drawing action, so as to achieve training similar to rowing.

[0012] When a lower swing arm is provided on the rocker arm connecting member, the user can sit on a chair and then step on the stepping part of the lower swing arm to swing forward and backward to perform seated stepping training, or swing left and right to train the legs and related joints. Of course, a combination of forward and backward and left and right movements can also be performed, that is, swinging forward and backward while swinging left and right to present an arc-drawing action, which can better train the legs;

[0013] When both an upper swing arm and a lower swing arm are provided on the rocker arm connecting member, the upper swing arm and the lower swing arm provided on the same rocker arm connecting member move in opposite directions, that is, when the upper swing arm moves forward, the lower swing arm moves backward; when the upper swing arm moves backward, the lower swing arm moves forward; when the upper swing arm moves to the left, the lower swing arm moves to the right; when the upper swing arm moves to the right, the lower swing arm moves to the left; this allows the user to train the arms and legs at the same time.

[0014] Further, the support column connecting member is configured as a movable joint shaft, the intermediate swinging member is configured as a connecting sleeve, the intermediate swinging member is sleeved outside the support column connecting member and can rotate with the support column as the rotation axis; or the support column connecting member is configured as a connecting sleeve, the intermediate swinging member is configured as a movable joint shaft, the intermediate swinging member is inserted into the support column connecting member and can rotate with the axis of the intermediate swinging member as the rotation axis.

[0015] The adoption of the above technical solution makes the support column connecting member and the intermediate swinging member more reasonable, and facilitates the installation between the support column connecting member and the intermediate swinging member in actual production, and also facilitates the rotation activity of the intermediate swinging member relative to the support column connecting member after the two are installed.

[0016] Further, the side wall of the intermediate swinging member is provided with a first connecting rotating portion, the rocker arm connecting member is provided with a second connecting rotating portion matching the first connecting rotating portion, and the rocker arm connecting member is rotatably connected with the first connecting rotating portion through the second connecting rotating portion;

[0017] Specifically, one of the first connecting rotating part and the second connecting rotating part is configured as a connecting shaft part, and correspondingly, the other of the first connecting rotating part and the second connecting rotating part is configured as a connecting shaft hole that cooperates with the connecting shaft part, and the connecting shaft part is extended along a direction perpendicular to the rotation axis of the intermediate swinging part relative to the support column connecting part, and the axis of the connecting shaft hole is consistent with the direction perpendicular to the rotation axis of the intermediate swinging part relative to the support column connecting part.

[0018] The adoption of the above technical solution makes the intermediate swing part and the rocker arm connecting part more reasonable, and facilitates the installation between the intermediate swing part and the rocker arm connecting part in actual production, and also facilitates the rotation activity of the rocker arm connecting part and the intermediate swing part after the two are installed.

[0019] Further, the first connecting rotating portion is configured as the connecting rotating shaft portion, and correspondingly, the second connecting rotating portion is configured as the connecting rotating shaft hole;

[0020] The intermediate swing member includes an intermediate swing member body and a connecting shaft, and the intermediate swing member body is rotatably connected to the support column connecting member; the connecting shaft penetrates the intermediate swing member body along a direction perpendicular to the rotation axis of the intermediate swing member relative to the support column connecting member, and at least one of the two ends of the connecting shaft protrudes from the outer wall of the intermediate swing member body to form the connecting shaft portion.

[0021] The adoption of the above technical scheme makes the intermediate swinging member more reasonable, so as to facilitate actual production and installation; specifically, the intermediate swinging member body can be first installed on the support column connecting member; then the rocker arm connecting member can be pre-installed on the intermediate swinging member, so that the connecting shaft hole on the rocker arm connecting member is aligned with the intermediate swinging member for installing the connecting shaft; then the connecting shaft is inserted into the intermediate swinging member body after passing through the connecting shaft hole; preferably, both ends of the connecting shaft protrude from the outer wall of the intermediate swinging member body to form the connecting shaft part.

[0022] Further, the inner hole diameter of the connecting sleeve is larger than the diameter of the movable joint shaft, a first joint bearing is arranged between the connecting sleeve and the movable joint shaft, the diameter of the movable joint shaft matches the inner hole of the inner ring of the first joint bearing so as to be inserted into the inner hole of the inner ring of the first joint bearing, and the inner hole diameter of the connecting sleeve matches the outer diameter of the outer ring of the first joint bearing so as to be sleeved outside the first joint bearing;

[0023] The hole diameter of the connecting shaft hole is larger than the diameter of the connecting shaft part. A second joint bearing is arranged between the connecting shaft hole and the connecting shaft part. The diameter of the connecting shaft part matches the inner hole of the inner ring of the second joint bearing so that it can be inserted into the inner hole of the inner ring of the second joint bearing. The hole diameter of the connecting shaft hole matches the outer diameter of the outer ring of the second joint bearing so that it can be sleeved outside the second joint bearing.

[0024] By adopting the above technical solution, the movable joint is more reasonable, the movement of the connecting sleeve relative to the movable joint shaft is smoother, and the movement of the connecting shaft hole relative to the connecting shaft part is smoother; that is, the movement of the intermediate swinging part relative to the support column connecting part is smoother, and the movement of the rocker arm connecting part relative to the intermediate swinging part is smoother.

[0025] Furthermore, a plurality of the first joint bearings are provided, and the plurality of the first joint bearings are arranged at intervals along the axis direction of the movable joint shaft.

[0026] The adoption of the above technical solution makes the installation between the support column connecting member and the intermediate swinging member more reasonable, and the provision of multiple first joint bearings can make the movement of the intermediate swinging member relative to the support column connecting member smoother; preferably, two first joint bearings are provided.

[0027] Furthermore, the rocker arm connecting piece is provided with a swing hole, and the rocker arm connecting piece is sleeved on the outside of the intermediate swing piece through the swing hole, and the rocker arm connecting piece is provided with the second connecting rotating part at the corresponding position of the swing hole on the side walls on both sides in the direction of its rotation axis, and when the second connecting rotating part is configured as a connecting shaft hole, the connecting shaft hole is communicated with the swing hole, and when the second connecting rotating part is configured as a connecting shaft part, the connecting shaft part extends toward the swing hole side.

[0028] By adopting the above technical solution, the rocker arm connecting member is more reasonable, and it is convenient for the rocker arm connecting member to be installed on the intermediate swinging member; and when the rocker arm connecting member is installed on the intermediate swinging member, the second connecting rotating parts of the rocker arm connecting member on both sides of the swing hole can cooperate with the first connecting rotating parts on both sides of the intermediate swinging member, so that the rotation connection between the rocker arm connecting member and the intermediate swinging member can be more stable and reliable;

[0029] When the rocker arm connecting piece is sleeved outside the intermediate rocker arm through the rocker hole, the rocker arm connecting piece can also be moved in a direction perpendicular to its rotation axis, thereby ensuring the stability of the installation of the rocker arm connecting piece and the intermediate rocker arm.

[0030] Furthermore, the intermediate swinging member is restricted from moving along its axis relative to the supporting column connecting member.

[0031] The adoption of the above technical solution makes the movable joint more reasonable and the operation more reliable and stable.

[0032] Furthermore, the connecting shaft is restricted in movement in its axial direction and in movement perpendicular to its axial direction.

[0033] The adoption of the above technical solution makes the movable joint more reasonable, and the operation is more reliable and stable. Moreover, since the connecting shaft passes through the intermediate swinging member body, it is also possible to limit the movement of the intermediate swinging member body in a direction perpendicular to the axial direction of the connecting shaft, that is, to limit the movement of the intermediate swinging member body on the axis of the support column connecting member.

[0034] Further, the movable joint includes a connecting shaft limiting member, the support column connecting member is configured as a movable joint shaft, and correspondingly, the intermediate swing member body is configured as a connecting sleeve, the connecting shaft is arranged on the outside of the support column connecting member, and a connecting shaft through-hole is arranged at the corresponding position of the support column connecting member, and the connecting shaft through-hole is arranged along the axis perpendicular to the connecting shaft, one end of the connecting shaft limiting member is provided with a limiting member limiting cap with a diameter larger than the connecting shaft through-hole, and the other end is formed as a limiting member fixed end, and the limiting member fixed end of the connecting shaft limiting member is connected to the support column connecting member after passing through the connecting shaft through-hole.

[0035] By adopting the above technical solution, the connection shaft limiting member cooperates with the connection shaft through-hole, and the limiting member limiting cap limits the connection shaft so that the connection shaft can be limited in its axial movement and in its movement perpendicular to its axial direction.

[0036] Furthermore, a cushion block is provided between the support column connecting member and the connecting shaft, and two sides of the cushion block are respectively abutted against the support column connecting member and the connecting shaft.

[0037] The adoption of the above technical solution makes the movable joint more reasonable; the provision of the pad can make the movable joint more stable as a whole and avoid shaking between the parts in the movable joint, so the operation of the movable joint is more reliable, stable and silent.

[0038] Furthermore, a cushion block groove matching the connecting shaft is provided on one side of the cushion block facing the connecting shaft.

[0039] By adopting the above technical solution, the abutment between the cushion block and the connecting shaft is made more stable.

[0040] A sit-and-step trainer comprises a support column, a rocker arm, and a movable joint, wherein the rocker arm is arranged on the side of the support column through the movable joint, and the rocker arm can swing forward and backward and left and right relative to the support column through the movable joint; the rocker arm comprises an upper rocker arm arranged above the movable joint and / or a lower rocker arm arranged below the movable joint, a gripping portion for hand gripping is arranged at one end of the upper rocker arm away from the movable joint, and a pedaling portion for foot pedaling is arranged at one end of the lower rocker arm away from the movable joint.

[0041] By adopting the above technical solution, since the rocker arm can swing forward and backward, left and right relative to the support column through the movable joint, that is, the rocker arm can swing forward and backward, left and right, and perform combined swinging; therefore, the seated training device can achieve more usage conditions to meet different usage conditions of users;

[0042] Specifically, when the swing arm only includes the upper swing arm, the user can sit on a chair and then hold the hand on the gripping portion of the upper swing arm to swing forward and backward to perform arm swing training, or swing left and right to train the arm and chest expansion. Of course, a combination of forward and backward and left and right movements can also be performed, that is, swinging forward and backward while swinging left and right to present an arc-drawing action, so as to achieve training similar to rowing;

[0043] When the swing arm only includes the lower swing arm, the user can sit on the chair and then step on the stepping part of the lower swing arm to swing forward and backward to perform sitting stepping training, or swing left and right to train the legs and related joints. Of course, the user can also perform a combination of forward and backward and left and right movements, that is, swing forward and backward while swinging left and right to present an arc-drawing action, which can better train the legs;

[0044] When the rocker arm includes the upper rocker arm and the lower rocker arm, the upper rocker arm and the lower rocker arm arranged on the same rocker arm connecting member move in opposite directions, that is, when the upper rocker arm moves forward, the lower rocker arm moves backward; when the upper rocker arm moves backward, the lower rocker arm moves forward; when the upper rocker arm moves to the left, the lower rocker arm moves to the right; when the upper rocker arm moves to the right, the lower rocker arm moves to the left; this allows the user to train the arms and legs at the same time.

[0045] Furthermore, the movable joint adopts the above-mentioned movable joint for the sit-and-step trainer, and the rotation axis of the intermediate swinging part relative to the support column connecting part in the movable joint is arranged along the front-to-back direction, and the rotation axis of the rocker arm connecting part relative to the intermediate swinging part is arranged along the left-right direction; the upper rocker arm is arranged above the rocker arm connecting part, and the lower rocker arm is arranged below the rocker arm connecting part.

[0046] The adoption of the above technical solution makes the arrangement of the movable joint more reasonable.

[0047] Furthermore, the rocker arms are provided with two groups, and correspondingly, the movable joints are provided with two groups, and the two groups of rocker arms are respectively provided on opposite sides of the support column through the two movable joints.

[0048] The adoption of the technical solution makes the seated training device more reasonable, and the arrangement of the two sets of rocker arms can train both hands and feet at the same time.

[0049] Furthermore, the upper rocker arm is detachably connected to the movable joint.

[0050] By adopting the above technical solution, when the user is not in use, the upper rocker arm can be removed from the movable joint for easy storage, thereby reducing the space required for storage; when it needs to be used, the upper rocker arm can be installed on the movable joint.

[0051] Furthermore, the support column has a storage cavity along its height direction, and the top of the support column is provided with an upper opening connected to the storage cavity, and the upper rocker arm can be inserted into the storage cavity through the upper opening.

[0052] The adoption of the above technical solution makes the sit-and-sit trainer more reasonable. When the user does not need to use it, the user can insert the disassembled upper rocker arm into the storage cavity; when the user needs to use it, the user can take out the upper rocker arm from the storage cavity and then install it on the movable joint; the above technical solution can make the sit-and-sit trainer occupy a smaller space when stored, which is convenient for storage; and can avoid the loss of the disassembled upper rocker arm.

[0053] Furthermore, the upper end of the movable joint is provided with a first disassembly structure, and correspondingly, one end of the upper rocker arm used for connecting with the movable joint is provided with a second disassembly structure, and the first disassembly structure and the second disassembly structure can be disassembled and matched;

[0054] Specifically, one of the first disassembly structure and the second disassembly structure is configured as a disassembly column, and correspondingly, the other of the first disassembly structure and the second disassembly structure is configured as a disassembly slot that can be plugged into and cooperate with the disassembly column.

[0055] The adoption of the technical solution facilitates the disassembly and installation of the upper rocker arm and the movable joint.

[0056] Furthermore, the gripping portion is rotatably arranged between the upper rocker arm, and the rotation axis of the gripping portion relative to the upper rocker arm is extended along the front-rear direction.

[0057] By adopting the above technical solution, the gripping part can be rotated inward and outward in the left and right directions relative to the upper rocker arm; so that it can be adjusted according to the user's usage and better meet the actual usage needs; for example, the gripping part can be rotated to a vertical state, a horizontal state facing inward or outward, 45 degrees inward or outward, etc.

[0058] Further, the pedal portion is rotatably arranged with the lower rocker arm, and the pedal portion is extended along the left-right direction relative to the rotation axis of the lower rocker arm.

[0059] By adopting the above technical solution, the pedal part is made more reasonable, and the user can step on the pedal part very stably when the swing arm swings.

[0060] Compared with the prior art, the present invention has the following beneficial effects:

[0061] (1) The movable joint for the sit-and-step trainer of the present invention enables the rocker arm to swing forward and backward and left and right relative to the support column, and can realize more usage modes to meet the different needs of users.

[0062] (2) The rocker arm of the seated training device of the present invention can swing forward and backward and left and right relative to the support column, and can realize more usage modes to meet the different needs of users.

[0063] (3) The movable joint for the sitting and pedaling training device and the sitting and pedaling training device of the present invention are reasonably designed. BRIEF DESCRIPTION OF THE DRAWINGS

[0064] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0065] Figure 1 It is a schematic diagram of the three-dimensional structure of the movable joint of the sitting and pedaling training device of the present invention;

[0066] Figure 2 It is a schematic diagram of the exploded structure of the movable joint of the sitting and pedaling training device of the present invention;

[0067] Figure 3 It is a schematic diagram of the three-dimensional structure of the sitting and pedaling training device of the present invention;

[0068] Figure 4It is a schematic diagram of the three-dimensional structure of the sitting and pedaling training device of the present invention in the storage state;

[0069] Figure 5 It is a schematic diagram of the rotation state of the gripping part of the sitting and pedaling training device of the present invention;

[0070] The names of the components corresponding to the various reference numerals in the figure are: 1. Support column connecting member; 2. Rocker arm connecting member; 201. Second connecting rotating part; 202. Swing hole; 3. Intermediate swing member; 301. First connecting rotating part; 302. Intermediate swing member body; 303. Connecting shaft; 303-1. Connecting shaft through hole; 4. Active joint shaft; 5. Connecting sleeve; 6. Connecting shaft part; 7. Connecting shaft hole; 8. First joint bearing; 9. Second joint bearing; 10. Connecting shaft limiting member; 1001. Limiting member limiting cap; 1002. Limiting member fixed end; 11. Pad; 1101. Pad groove;

[0071] 100, support column; 100-1, storage cavity; 100-2, upper opening; 200, rocker arm; 200-1, upper rocker arm; 200-11, second disassembly and assembly structure; 200-2, lower rocker arm; 300, movable joint; 300-1, first disassembly and assembly structure; 400, gripping part; 500, pedaling part; 600, disassembly and assembly column; 700, disassembly and assembly groove. DETAILED DESCRIPTION

[0072] The present application is described in detail below with reference to the accompanying drawings and specific embodiments.

[0073] The following describes the implementation methods of the present application through specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The present application can also be implemented or applied through other different specific implementation methods, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that, in the absence of conflict, the following embodiments and the features in the embodiments can be combined with each other. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work belong to the scope of protection of the present application.

[0074] It should be noted that various aspects of the embodiments within the scope of the appended claims are described below. It should be apparent that the aspects described herein can be embodied in a wide variety of forms, and any specific structure and / or function described herein is merely illustrative. Based on the present application, it should be understood by those skilled in the art that an aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspect described herein can be used to implement the device and / or practice the method. In addition, other structures and / or functionalities other than one or more of the aspects described herein can be used to implement this device and / or practice this method.

[0075] It should also be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present application. The drawings only show components related to the present application rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0076] Additionally, in the following description, specific details are provided to facilitate a thorough understanding of the examples. However, it will be understood by those skilled in the art that the examples can be practiced without these specific details.

[0077] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0078] The technical solutions provided by various embodiments of the present application are described below in conjunction with the accompanying drawings.

[0079] See also Figure 1 to Figure 2 The present invention provides a movable joint 300 for a seat-pedal training device, which is used to connect a rocker arm 200 to a support column 100, comprising:

[0080] A support column connector 1, the support column connector 1 is used to connect with the support column 100;

[0081] A rocker arm connector 2, the rocker arm connector 2 being used to connect with the rocker arm 200;

[0082] And an intermediate swing member 3, which is rotatably connected to the support column connecting member 1 and the rocker arm connecting member 2 respectively, and the rotation axis of the rocker arm connecting member 2 relative to the intermediate swing member 3 is perpendicular to the rotation axis of the intermediate swing member 3 relative to the support column connecting member 1.

[0083] By adopting the above technical solution, since the rocker arm connecting member 2 can rotate relative to the intermediate swing member 3, the intermediate swing member 3 can rotate relative to the support column connecting member 1, and the rotation axis of the rocker arm connecting member 2 relative to the intermediate swing member 3 is perpendicular to the rotation axis of the intermediate swing member 3 relative to the support column connecting member 1, the rocker arm connecting member 2 can move forward and backward, left and right, and in a combined direction relative to the support column connecting member 1, that is, the rocker arm 200 installed on the rocker arm connecting member 2 can move in the forward and backward, left and right, and in a combined direction relative to the support column 100;

[0084] The above technical solution allows users to use the sit-and-sit training device in more situations. For example, when the rocker arm connector 2 is provided with an upper swing arm, the user can sit on a chair and then hold the hand on the gripping portion 400 of the upper swing arm to swing forward and backward to perform arm swing training, or swing left and right to train the arms and chest expansion. Of course, a combination of forward and backward and left and right movements can also be performed, that is, swinging forward and backward while swinging left and right to present an arc-drawing action to achieve training similar to rowing.

[0085] When the rocker arm connector 2 is provided with a lower swing arm, the user can sit on a chair and then step on the pedal part 500 of the lower swing arm to swing forward and backward to perform sitting stepping training, or swing left and right to train the legs and related joints. Of course, a combination of forward and backward and left and right movements can also be performed, that is, swinging forward and backward while swinging left and right to present an arc-drawing action, which can better train the legs;

[0086] When both an upper swing arm and a lower swing arm are provided on the rocker arm connecting member 2, the upper swing arm and the lower swing arm provided on the same rocker arm connecting member 2 move in opposite directions, that is, when the upper swing arm moves forward, the lower swing arm moves backward; when the upper swing arm moves backward, the lower swing arm moves forward; when the upper swing arm moves to the left, the lower swing arm moves to the right; when the upper swing arm moves to the right, the lower swing arm moves to the left; this allows the user to train the arms and legs at the same time.

[0087] Further, the support column connecting member 1 is configured as a movable joint shaft 4, the intermediate swinging member 3 is configured as a connecting sleeve 5, the intermediate swinging member 3 is sleeved outside the support column connecting member 1 and can rotate with the support column as the rotation axis; or the support column connecting member 1 is configured as a connecting sleeve 5, the intermediate swinging member 3 is configured as a movable joint shaft 4, the intermediate swinging member 3 is inserted into the support column connecting member 1 and can rotate with the axis of the intermediate swinging member 3 as the rotation axis.

[0088] The adoption of the above technical scheme makes the support column connecting member 1 and the intermediate swinging member 3 more reasonable, and facilitates the installation between the support column connecting member 1 and the intermediate swinging member 3 in actual production, and also facilitates the rotation of the intermediate swinging member 3 relative to the support column connecting member 1 after the two are installed.

[0089] Further, the side wall of the intermediate swinging member 3 is provided with a first connecting rotating portion 301, the rocker arm connecting member 2 is provided with a second connecting rotating portion 201 matching the first connecting rotating portion 301, and the rocker arm connecting member 2 is rotatably connected with the first connecting rotating portion 301 through the second connecting rotating portion 201;

[0090] Specifically, one of the first connecting rotating part 301 and the second connecting rotating part 201 is configured as a connecting shaft part 6, and correspondingly, the other of the first connecting rotating part 301 and the second connecting rotating part 201 is configured as a connecting shaft hole 7 that cooperates with the connecting shaft part 6, and the connecting shaft part 6 is extended along a direction perpendicular to the rotation axis of the intermediate swinging part 3 relative to the support column connecting part 1, and the axis of the connecting shaft hole 7 is consistent with the direction perpendicular to the rotation axis of the intermediate swinging part 3 relative to the support column connecting part 1.

[0091] The adoption of the above technical scheme makes the intermediate swing member 3 and the rocker arm connecting member 2 more reasonable, and facilitates the installation between the intermediate swing member 3 and the rocker arm connecting member 2 in actual production, and also facilitates the rotation activity of the rocker arm connecting member 2 and the intermediate swing member 3 after the two are installed.

[0092] Further, the first connecting rotating portion 301 is configured as the connecting rotating shaft portion 6, and correspondingly, the second connecting rotating portion 201 is configured as the connecting rotating shaft hole 7;

[0093] The intermediate swing member 3 includes an intermediate swing member body 302 and a connecting shaft 303, and the intermediate swing member body 302 is rotatably connected to the support column connecting member 1; the connecting shaft 303 penetrates the intermediate swing member body 302 along a direction perpendicular to the rotation axis of the intermediate swing member 3 relative to the support column connecting member 1, and at least one of the two ends of the connecting shaft 303 protrudes from the outer wall of the intermediate swing member body 302 to form the connecting shaft portion 6.

[0094] The above-mentioned technical scheme is adopted to make the intermediate swing member 3 more reasonable, so as to facilitate actual production and installation; specifically, the intermediate swing member body 302 can be first installed on the support column connector 1; then the rocker arm connector 2 can be pre-installed on the intermediate swing member 3, so that the connecting shaft hole 7 on the rocker arm connector 2 is aligned with the intermediate swing member 3 for installing the connecting shaft 303; then the connecting shaft 303 is passed through the connecting shaft hole 7 and plugged into the intermediate swing member body 302; preferably, both ends of the connecting shaft 303 protrude from the outer wall of the intermediate swing member body 302 to form the connecting shaft part 6.

[0095] Further, the inner hole diameter of the connecting sleeve 5 is larger than the diameter of the movable joint shaft 4, a first joint bearing 8 is arranged between the connecting sleeve 5 and the movable joint shaft 4, the diameter of the movable joint shaft 4 matches the inner hole of the inner ring of the first joint bearing 8 so as to be inserted into the inner hole of the inner ring of the first joint bearing 8, and the inner hole diameter of the connecting sleeve 5 matches the outer diameter of the outer ring of the first joint bearing 8 so as to be sleeved outside the first joint bearing 8;

[0096] The hole diameter of the connecting shaft hole 7 is larger than the diameter of the connecting shaft part 6. A second joint bearing 9 is arranged between the connecting shaft hole 7 and the connecting shaft part 6. The diameter of the connecting shaft part 6 matches the inner hole of the inner ring of the second joint bearing 9 so as to be inserted into the inner hole of the inner ring of the second joint bearing 9. The hole diameter of the connecting shaft hole 7 matches the outer diameter of the outer ring of the second joint bearing 9 so as to be sleeved outside the second joint bearing 9.

[0097] By adopting the above technical scheme, the movable joint 300 is more reasonable, the movement of the connecting sleeve 5 relative to the movable joint shaft 4 is smoother, and the movement of the connecting shaft hole 7 relative to the connecting shaft part 6 is smoother; that is, the movement of the intermediate swinging member 3 relative to the support column connecting member 1 is smoother, and the movement of the rocker arm connecting member 2 relative to the intermediate swinging member 3 is smoother.

[0098] Furthermore, a plurality of the first joint bearings 8 are provided, and the plurality of the first joint bearings 8 are arranged at intervals along the axial direction of the movable joint shaft 4 .

[0099] The adoption of the above technical solution makes the installation between the support column connecting member 1 and the intermediate swinging member 3 more reasonable, and the provision of multiple first joint bearings 8 can make the movement of the intermediate swinging member 3 relative to the support column connecting member 1 smoother; preferably, two first joint bearings 8 are provided.

[0100] Furthermore, the rocker arm connecting member 2 is provided with a swing hole 202, and the rocker arm connecting member 2 is sleeved on the outside of the intermediate swing member 3 through the swing hole 202. The rocker arm connecting member 2 is provided with the second connecting rotating part 201 at the corresponding position of the swing hole 202 on the side walls on both sides in the direction of its rotation axis, and when the second connecting rotating part 201 is configured as the connecting shaft hole 7, the connecting shaft hole 7 is communicated with the swing hole 202, and when the second connecting rotating part 201 is configured as the connecting shaft part 6, the connecting shaft part 6 extends toward the side of the swing hole 202.

[0101] By adopting the above technical solution, the rocker arm connecting member 2 is more reasonable, and it is convenient for the rocker arm connecting member 2 to be installed on the intermediate swing member 3; and when the rocker arm connecting member 2 is installed on the intermediate swing member 3, the second connecting rotating parts 201 of the rocker arm connecting member 2 on both sides of the swing hole 202 can cooperate with the first connecting rotating parts 301 on both sides of the intermediate swing member 3, so that the rotation connection between the rocker arm connecting member 2 and the intermediate swing member 3 can be more stable and reliable;

[0102] When the rocker arm connector 2 is sleeved outside the intermediate rocker arm 3 through the rocker hole 202, the rocker arm connector 2 can also move in a direction perpendicular to its rotation axis, thereby ensuring the stability of the installation of the rocker arm connector 2 and the intermediate rocker arm 3.

[0103] Furthermore, the intermediate swinging member 3 is restricted from moving along its axis relative to the supporting column connecting member 1 .

[0104] The adoption of the above technical solution makes the movable joint 300 more reasonable and the operation more reliable and stable.

[0105] Furthermore, the connecting shaft 303 is restricted in movement in its axial direction and in movement perpendicular to its axial direction.

[0106] The adoption of the above technical solution makes the movable joint 300 more reasonable, and the operation is more reliable and stable. Moreover, since the connecting shaft 303 passes through the intermediate swing member body 302, it is also possible to limit the movement of the intermediate swing member body 302 in a direction perpendicular to the axial direction of the connecting shaft 303, that is, to limit the movement of the intermediate swing member body 302 on the axis of the support column connector 1.

[0107] Furthermore, the movable joint 300 includes a connecting shaft limiting member 10, the support column connecting member 1 is configured as a movable joint shaft 4, and correspondingly, the intermediate swing member body 302 is configured as a connecting sleeve 5, the connecting shaft 303 is arranged on the outside of the support column connecting member 1, and a connecting shaft through-hole 303-1 is arranged at the corresponding position of the support column connecting member 1, and the connecting shaft through-hole 303-1 is arranged along the axis perpendicular to the connecting shaft 303, one end of the connecting shaft limiting member 10 is provided with a limiting member limiting cap 1001 with a diameter larger than the connecting shaft through-hole 303-1, and the other end is formed as a limiting member fixed end 1002, and the limiting member fixed end 1002 of the connecting shaft limiting member 10 is connected to the support column connecting member 1 after passing through the connecting shaft through-hole 303-1.

[0108] By adopting the above technical solution, the connection shaft limiting member 10 cooperates with the connection shaft through hole 303-1, and the limiting member limiting cap 1001 limits the connection shaft 303, so that the connection shaft 303 can be limited to its axial movement and its movement perpendicular to its axial direction.

[0109] Furthermore, a cushion block 11 is provided between the support column connector 1 and the connecting shaft 303 , and two sides of the cushion block 11 are respectively in contact with the support column connector 1 and the connecting shaft 303 .

[0110] The above technical solution makes the movable joint 300 more reasonable; the setting of the pad 11 can make the movable joint 300 more stable as a whole and avoid shaking between the parts of the movable joint 300, so the operation of the movable joint 300 is more reliable, stable and quiet.

[0111] Furthermore, a cushion block groove 1101 matching the connecting shaft 303 is provided on one side of the cushion block 11 facing the connecting shaft 303 .

[0112] By adopting the above technical solution, the abutment between the cushion block 11 and the connecting shaft 303 is made more stable.

[0113] See also Figures 1 to 5A sit-and-step trainer comprises a support column 100, a rocker arm 200, and an active joint 300, wherein the rocker arm 200 is arranged on the side of the support column 100 through the active joint 300, and the rocker arm 200 can swing forward and backward and left and right relative to the support column 100 through the active joint 300; the rocker arm 200 comprises an upper rocker arm 200-1 arranged above the active joint 300 and / or a lower rocker arm 200-2 arranged below the active joint 300, a gripping portion 400 for hand gripping is arranged at one end of the upper rocker arm 200-1 away from the active joint 300, and a pedaling portion 500 for foot pedaling is arranged at one end of the lower rocker arm 200-2 away from the active joint 300.

[0114] With the above technical solution, since the rocker arm 200 can swing forward and backward, left and right relative to the support column 100 through the movable joint 300, that is, the rocker arm 200 can swing forward and backward, left and right, and in combination; therefore, the seated training device can achieve more usage conditions to meet different usage conditions of users;

[0115] Specifically, when the swing arm 200 only includes the upper swing arm 200-1, the user can sit on a chair and then hold the hand on the grip portion 400 of the upper swing arm to swing forward and backward to perform arm swing training, or swing left and right to train the arm and chest expansion. Of course, the user can also perform a combination of forward and backward and left and right movements, that is, swing forward and backward while swinging left and right to present an arc-drawing action, so as to achieve training similar to rowing;

[0116] When the swing arm 200 only includes the lower swing arm 200-2, the user can sit on the chair and then step on the stepping part 500 of the lower swing arm to swing forward and backward to perform sitting stepping training, or swing left and right to train the legs and related joints. Of course, the user can also perform a combination of forward and backward and left and right movements, that is, swing forward and backward while swinging left and right to present an arc-drawing action, which can better train the legs;

[0117] When the rocker arm 200 includes the upper rocker arm 200-1 and the lower rocker arm 200-2, the upper rocker arm and the lower rocker arm arranged on the same rocker arm connecting member 2 move in opposite directions, that is, when the upper rocker arm moves forward, the lower rocker arm moves backward; when the upper rocker arm moves backward, the lower rocker arm moves forward; when the upper rocker arm moves to the left, the lower rocker arm moves to the right; when the upper rocker arm moves to the right, the lower rocker arm moves to the left; this allows the user to train the arms and legs at the same time.

[0118] Furthermore, the movable joint 300 adopts the above-mentioned movable joint 300 for the sit-and-sit trainer, and the rotation axis of the middle swinging member 3 in the movable joint 300 relative to the support column connecting member 1 is arranged along the front-to-back direction, and the rotation axis of the rocker arm connecting member 2 relative to the middle swinging member 3 is arranged along the left-right direction; the upper rocker arm 200-1 is arranged above the rocker arm connecting member 2, and the lower rocker arm 200-2 is arranged below the rocker arm connecting member 2.

[0119] The adoption of the above technical solution makes the arrangement of the movable joint 300 more reasonable.

[0120] Furthermore, the rocker arms 200 are provided with two groups, and correspondingly, the movable joints 300 are provided with two groups, and the two groups of rocker arms 200 are respectively provided on the opposite sides of the support column 100 through the two movable joints 300.

[0121] The adoption of the above technical solution makes the sit-and-sit training device more reasonable, and the arrangement of the two sets of rocker arms 200 can train both hands and feet at the same time.

[0122] Furthermore, the upper rocker arm 200 - 1 is detachably connected to the movable joint 300 .

[0123] By adopting the above technical solution, when the user is not in use, the upper rocker arm 200-1 can be removed from the movable joint 300 for easy storage, thereby reducing the space required for storage; when it is needed, the upper rocker arm 200-1 can be installed on the movable joint 300.

[0124] Furthermore, the support column 100 has a storage cavity 100-1 along its height direction, and the top of the support column 100 is provided with an upper opening 100-2 connected to the storage cavity 100-1, and the upper rocker arm 200-1 can be inserted into the storage cavity 100-1 through the upper opening 100-2.

[0125] The adoption of the above-mentioned technical solution makes the sit-and-sit trainer more reasonable. When the user does not need to use it, the user can insert the disassembled upper rocker arm 200-1 into the storage cavity 100-1; when the user needs to use it, the user can take out the upper rocker arm 200-1 from the storage cavity 100-1 and then install it on the movable joint 300; the above-mentioned technical solution can make the sit-and-sit trainer occupy a smaller space when stored, which is convenient for storage; and can avoid the loss of the disassembled upper rocker arm 200-1.

[0126] Further, the upper end of the movable joint 300 is provided with a first disassembly structure 300-1, and correspondingly, one end of the upper rocker arm 200-1 for connecting with the movable joint 300 is provided with a second disassembly structure 200-11, and the first disassembly structure 300-1 and the second disassembly structure 200-11 can be disassembled and matched;

[0127] Specifically, one of the first disassembly structure 300 - 1 and the second disassembly structure 200 - 11 is configured as a disassembly column 600 , and correspondingly, the other of the first disassembly structure 300 - 1 and the second disassembly structure 200 - 11 is configured as a disassembly slot 700 that can be plugged into and matched with the disassembly column 600 .

[0128] The above technical solution is adopted to facilitate the disassembly and installation of the upper rocker arm 200 - 1 and the movable joint 300 .

[0129] See also Figure 5 Furthermore, the holding portion 400 is rotatably arranged between the upper rocker arm 200-1, and the rotation axis of the holding portion 400 relative to the upper rocker arm 200-1 extends along the front-rear direction.

[0130] By adopting the above technical solution, the holding portion 400 can be rotated inward and outward in the left and right directions relative to the upper rocker arm 200-1, so that it can be adjusted according to the user's usage and better meet the actual usage needs; for example, the holding portion 400 is rotated to a vertical state, a horizontal state facing inward or outward, 45 degrees inward or outward, etc.

[0131] Furthermore, the pedal portion 500 is rotatably disposed with the lower rocker arm 200 - 2 , and the pedal portion 500 is extended along the left-right direction relative to the rotation axis of the lower rocker arm 200 - 2 .

[0132] The above technical solution makes the pedal part 500 more reasonable, and the user can step on the pedal part 500 very stably when the swing arm swings.

[0133] The same and similar parts between the various embodiments in this specification can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0134] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A movable joint (300) for a sit-and-sit trainer, used to connect a rocker arm (200) to a support column (100), characterized in that: include: A support column connecting piece (1), the support column connecting piece (1) being used to be connected to the support column (100); A rocker arm connecting member (2), wherein the rocker arm connecting member (2) is used to be connected to the rocker arm (200); And an intermediate swing member (3), wherein the intermediate swing member (3) is rotatably connected to the support column connecting member (1) and the rocker arm connecting member (2) respectively, and the rotation axis of the rocker arm connecting member (2) relative to the intermediate swing member (3) is perpendicular to the rotation axis of the intermediate swing member (3) relative to the support column connecting member (1).

2. The movable joint (300) for the sit-and-step trainer according to claim 1, characterized in that: The support column connecting member (1) is configured as a movable joint shaft (4), and the intermediate swing member (3) is configured as a connecting sleeve (5). The intermediate swing member (3) is sleeved outside the support column connecting member (1) and can rotate with the support column as the rotation axis; or the support column connecting member (1) is configured as a connecting sleeve (5), and the intermediate swing member (3) is configured as a movable joint shaft (4), and the intermediate swing member (3) is inserted into the support column connecting member (1) and can rotate with the axis of the intermediate swing member (3) as the rotation axis.

3. The movable joint (300) for the sit-and-step trainer according to claim 2, characterized in that: The side wall of the intermediate swinging member (3) is provided with a first connecting rotating portion (301), the rocker arm connecting member (2) is provided with a second connecting rotating portion (201) matching the first connecting rotating portion (301), and the rocker arm connecting member (2) is rotatably connected with the first connecting rotating portion (301) via the second connecting rotating portion (201); One of the first connecting rotating part (301) and the second connecting rotating part (201) is configured as a connecting shaft part (6), and correspondingly, the other of the first connecting rotating part (301) and the second connecting rotating part (201) is configured as a connecting shaft hole (7) that cooperates with the connecting shaft part (6), and the connecting shaft part (6) extends along a direction perpendicular to the rotation axis of the intermediate swinging member (3) relative to the support column connecting member (1), and the axis of the connecting shaft hole (7) is consistent with the direction perpendicular to the rotation axis of the intermediate swinging member (3) relative to the support column connecting member (1).

4. The movable joint (300) for the sit-and-step trainer according to claim 3, characterized in that: The first connecting rotating portion (301) is configured as the connecting rotating shaft portion (6), and correspondingly, the second connecting rotating portion (201) is configured as the connecting rotating shaft hole (7); The intermediate swing member (3) comprises an intermediate swing member body (302) and a connecting shaft (303), wherein the intermediate swing member body (302) is rotatably connected to the support column connecting member (1); the connecting shaft (303) penetrates the intermediate swing member body (302) along a direction perpendicular to the rotation axis of the intermediate swing member (3) relative to the support column connecting member (1), and at least one of the two ends of the connecting shaft (303) protrudes from the outer wall of the intermediate swing member body (302) to form the connecting shaft portion (6).

5. The movable joint (300) for the sit-and-step trainer according to claim 3, characterized in that: The inner hole diameter of the connecting sleeve (5) is larger than the diameter of the movable joint shaft (4); a first joint bearing (8) is arranged between the connecting sleeve (5) and the movable joint shaft (4); the diameter of the movable joint shaft (4) matches the inner hole of the inner ring of the first joint bearing (8) so as to be inserted into the inner hole of the inner ring of the first joint bearing (8); the inner hole diameter of the connecting sleeve (5) matches the outer diameter of the outer ring of the first joint bearing (8) so as to be sleeved outside the first joint bearing (8); The hole diameter of the connecting shaft hole (7) is larger than the diameter of the connecting shaft portion (6); a second joint bearing (9) is arranged between the connecting shaft hole (7) and the connecting shaft portion (6); the diameter of the connecting shaft portion (6) matches the inner hole of the inner ring of the second joint bearing (9) so as to be inserted into the inner hole of the inner ring of the second joint bearing (9); the hole diameter of the connecting shaft hole (7) matches the outer diameter of the outer ring of the second joint bearing (9) so as to be sleeved outside the second joint bearing (9); A plurality of the first joint bearings (8) are provided, and the plurality of the first joint bearings (8) are arranged at intervals in the axial direction extending from the movable joint shaft (4).

6. The movable joint (300) for the sit-and-step trainer according to claim 3, characterized in that: The rocker arm connecting member (2) is provided with a swing hole (202), and the rocker arm connecting member (2) is sleeved on the outside of the intermediate swing member (3) through the swing hole (202). The side walls of the rocker arm connecting member (2) on both sides in the direction of its rotation axis are provided with the second connecting rotating part (201) at the corresponding position of the swing hole (202), and when the second connecting rotating part (201) is configured as a connecting shaft hole (7), the connecting shaft hole (7) is connected to the swing hole (202), and when the second connecting rotating part (201) is configured as a connecting shaft part (6), the connecting shaft part (6) extends toward the side of the swing hole (202).

7. The movable joint (300) for the sit-and-step training device according to claim 4, characterized in that: The intermediate swinging member (3) is restricted from moving along its axis relative to the supporting column connecting member (1); The connecting shaft (303) is restricted in movement in its axial direction and in movement perpendicular to its axial direction; The movable joint (300) includes a connecting shaft limiting member (10), the supporting column connecting member (1) is configured as a movable joint shaft (4), and correspondingly, the intermediate swing member body (302) is configured as a connecting sleeve (5), the connecting shaft (303) is arranged on the outer side of the supporting column connecting member (1), and a connecting shaft through hole (303-1) is arranged at a corresponding position of the supporting column connecting member (1), and the connecting shaft through hole (303-1) is arranged along the axis perpendicular to the connecting shaft (303), one end of the connecting shaft limiting member (10) is provided with a limiting member limiting cap (1001) having a diameter larger than the connecting shaft through hole (303-1), and the other end is formed as a limiting member fixed end (1002), and the limiting member fixed end (1002) of the connecting shaft limiting member (10) passes through the connecting shaft through hole (303-1) and is connected to the supporting column connecting member (1); A cushion block (11) is provided between the support column connecting member (1) and the connecting rotating shaft (303), and two sides of the cushion block (11) are respectively in contact with the support column connecting member (1) and the connecting rotating shaft (303); A cushion block groove (1101) matching the connecting shaft (303) is provided on one side of the cushion block (11) facing the connecting shaft (303).

8. A sit-and-step training device, characterized in that: The invention comprises a support column (100), a rocker arm (200), and a movable joint (300); the rocker arm (200) is arranged on the side of the support column (100) through the movable joint (300), and the rocker arm (200) can swing forward and backward and left and right relative to the support column (100) through the movable joint (300); the rocker arm (200) comprises an upper rocker arm (200-1) arranged above the movable joint (300) and / or a lower rocker arm (200-2) arranged below the movable joint (300); a gripping portion (400) for hand gripping is arranged at one end of the upper rocker arm (200-1) away from the movable joint (300), and a pedaling portion (500) for foot pedaling is arranged at one end of the lower rocker arm (200-2) away from the movable joint (300).

9. The seated training device according to claim 8, characterized in that: The movable joint (300) adopts the movable joint (300) for the sitting and pedaling training device according to any one of claims 1 to 7, wherein the rotation axis of the intermediate swinging member (3) relative to the support column connecting member (1) in the movable joint (300) is arranged along the front-to-back direction, and the rotation axis of the rocker arm connecting member (2) relative to the intermediate swinging member (3) is arranged along the left-to-right direction; the upper rocker arm (200-1) is arranged above the rocker arm connecting member (2), and the lower rocker arm (200-2) is arranged below the rocker arm connecting member (2); The rocker arms (200) are provided in two groups, and correspondingly, the movable joints (300) are provided in two groups. The two groups of rocker arms (200) are respectively provided on opposite sides of the support column (100) through the two movable joints (300); the support column connectors (1) in the two movable joints (300) are connected together.

10. The sitting and pedaling training device according to claim 8, characterized in that: The upper rocker arm (200-1) is detachably connected to the movable joint (300); The support column (100) has a storage cavity (100-1) along its height direction, and the top of the support column (100) is provided with an upper opening (100-2) connected to the storage cavity (100-1), and the upper rocker arm (200-1) can be inserted into the storage cavity (100-1) through the upper opening (100-2); The upper end of the movable joint (300) is provided with a first disassembly structure (300-1), and correspondingly, one end of the upper rocker arm (200-1) used for connecting with the movable joint (300) is provided with a second disassembly structure (200-11), and the first disassembly structure (300-1) and the second disassembly structure (200-11) can be disassembled and matched; One of the first assembling and disassembling structure (300-1) and the second assembling and disassembling structure (200-11) is configured as a assembling and disassembling column (600), and correspondingly, the other of the first assembling and disassembling structure (300-1) and the second assembling and disassembling structure (200-11) is configured as a assembling and disassembling groove (700) capable of being plugged and matched with the assembling and disassembling column (600); The gripping portion (400) is rotatably arranged between the upper rocker arm (200-1), and the rotation axis of the gripping portion (400) relative to the upper rocker arm (200-1) extends along the front-rear direction; The pedal part (500) is rotatably arranged with the lower rocker arm (200-2), and the pedal part (500) is arranged to extend along the left-right direction relative to the rotation axis of the lower rocker arm (200-2).

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