JPH03275080A - Training apparatus for abdominal muscle - Google Patents

Abstract

PURPOSE: To prevent deterioration of appearance and the dangers of a user being injured or solid by providing an adjustment handle on the side of a control element which is different from an operating part along the direction of upward movement. CONSTITUTION: A control element 9 has a cylindrical wall part 51, which can be displaced in the direction of an axis inside a cylindrical guide bush 53 which is coaxial with a spring 5 and guide tubes 27, 33. The control element 9 can be operated by a handle 55 which can be touched from outside a wall 29. Two cams 57 project from the periphery of the wall part 51 and work in conjunction with an axial thrust passage 59 extending in the direction of the axis from the edge of the guide bush 53 located on the front 19. When the control element 9 is rotated, the axial thrust passage 59 moves the control element in the direction of the axis, changing the preload of the compression spring 5.

Description

DETAILED DESCRIPTION OF THE INVENTION C. INDUSTRIAL APPLICATION The present invention relates to an abdominal muscle 111g device, in particular a body element and an actuating part guided to move between two end positions with respect to the body element; a compression spring (in particular a compression coil spring) clamped between the body part and the actuating part; a lift counting mechanism actuated by the lifting movement of the actuating part with respect to the body part; a flexible body belt secured to the body element by at least two spaced apart connecting members, the actuating part being adapted to rest on the belly of the body on the side remote from the body element. The present invention relates to an abdominal exercise device having a substantially flat support surface, the support surface extending in a direction perpendicular to the direction of movement of the working part.

[Prior Art] Abdominal muscle training devices of this type are known, for example, by Dr. Otto Greith, published in 1961,
``Gesand Dalch Dich Selbst'' by Samlung Natter Land Pissen, Verlag Tart Dessier, Munich, Beach, Bath - (``Gesand Darch Dich Selbst'' by
5nnd duechDichselbs1Samm
lu+g Natur and Wissen, Ve
rlggKart Desch, Manich, V
ie++++a, Bs51e), pages 101 to 103. The purpose of this exercise tool is to strengthen your abdominal muscles and stimulate your side muscles. This exercise tool is attached to the body using a body belt with the operating part resting on the abdomen of the body, and when the abdomen is stretched taut, the loosened compression spring is compressed by the outward arching movement of the abdomen. Ru. The rise counting mechanism operates when the spring is fully compressed and counts the number of compression cycles.

The known abdominal muscle exerciser comprises two plates, one of which has a connecting hole for the body belt and whose displacement is guided by a stud projecting from the other plate, which is located at right angles to the one plate. . A compression coil spring clamped between two plates bears against a nut threaded onto the stud via a plate that surrounds the stud and moves in relation to the stud.

[Problems to be Solved by the Invention] In the case of the known abdominal muscle training device, the two plates have a slope that tends to be inclined relative to each other, making it difficult to operate. Also,
Since the spring and counting mechanism are exposed, this not only spoils the aesthetic appearance but also poses a risk of injury to the user or dirt. In known ab exercisers, by removing the nut the spring can be replaced with one of a different strength in order to adjust the pressure exerted by the exerciser; however, due to the relatively small size of the nut, replacing the spring requires some effort. Requires skill. Additionally, known exercise devices do not provide means for substantially altering the preload provided by the combined spring.

[Means for Solving the Problems and Effects] The present invention is an improvement on the above-mentioned known abdominal muscle training device, and allows the preload of the compression springs to be adjusted over a relatively wide range without difficulty. Provide abdominal muscle training equipment. Moreover, the compression spring can be replaced without difficulty and without requiring skill.

According to the invention, the abdominal muscle exerciser includes a body element, an actuating part, a compression spring, a control element and an axial thrust element, the actuating part moving between two end positions with respect to the body element. on the side farthest from the main body element.
having a substantially flat support surface adapted to rest on the belly of the body, the compression spring, preferably a helical compression spring, being located between the body element and the actuating part and connecting the actuating part and the control element. the control element is mounted within the opening of the body element so as to be rotatable and axially displaceable about an axis extending substantially along the direction of upward movement of the actuating part; The diameter of the control element is larger than the diameter of the compression spring, and the axial thrust elements are respectively provided on the control element and the body element in relation to each other in the support path of the compression spring; The thrust elements have the effect of changing the relative axial positions of the body element and the control element based on the relative movement of these elements, such that one thrust element has an axial groove inclined with respect to the other thrust element associated with it. , these axial grooves are adapted to pass through the other thrust element and open axially for the purpose of removing the control element from the opening in the body element, the control element being adapted to pass through the other thrust element, the control element On the side farthest from the operating part in the direction, adjust the
It is equipped with a handle.

In particular, the flat support surface extends perpendicularly to the direction of movement of the actuating part, and the anal muscle exerciser comprises a lift counting mechanism actuated by an upward movement of the actuating part with respect to the body element;
and a flexible body belt fixed to the body element by at least two connecting members.

According to the invention, unlike known exercise tools, the compression spring does not rest directly on the body element, but on a control element remote from the body element and the stroke-limiting stop of the working part. There is. The four control elements are removably attached to the main body element using bayonet connections, and when the control element is removed, the compression spring can be removed and replaced with a spring of a different strength without complete disassembly. As such, it is a dimensional method. The control element, which is axially movable and rotatable within the opening for the bayonet connection,
The axial thrust element allows for axial adjustment within the range of rotational locking in the bayonet connection by rotation with respect to the body element, thereby allowing fine adjustment of the preload of the compression spring.

The angle of adjustment of the rotation of the locking or control element by the bayonet connection is limited to less than 3600 degrees, ensuring constant and reproducible adjustment. Adjustments can be made even more easily by using optical landmarks.

According to a preferred embodiment, the control element has a cylindrical shape and is guided so as to be rotatable and axially displaceable in a control bushing which projects from the body element. For this type of guidance, the axial thrust element of one of the two elements is in the form of a radially projecting cam that follows the axial thrust path of the other element. In this case, the axial thrust element must not absorb radial guiding forces.

Preferably, the control element is provided with diametrically opposed cams, each of which follows an axial thrust path defined by the leading edge of the control bush. Axial thrust elements of this type are extremely easy to manufacture, especially in the form of injection-molded plastic parts. Another advantage of this construction of the axial thrust element is that the groove for locking the control element can be placed at a predetermined rotational position in the axial thrust path for each cam. These grooves not only determine the specific spring preload value, but also prevent accidental rotation of the control element during use of the exercise tool, even when using a relatively steep axial thrust path. do.

The axial thrust path may be directly connected to the cam passage groove for removing the control block, but in this case, the control element may be accidentally disengaged, so the connection between the cam passage groove and the axial thrust path is Preferably, the control bushing is provided with a front projection between the two. In this way, in order to rotate the control element into the removal position, the control element must be manually moved over the protrusion by pushing the control element into the control bushing.

In the case of the known abdominal line, the stud guiding the body element has a relatively small diameter. According to a practical example of the invention, the body element and the actuating part carry coaxially extending guide tubes one within the other, which guide tubes coaxially surround the compression spring. In this regard, the body element and the working part have a relatively large diameter, which improves the stability of the guidance. The guide tube, one of which can be displaced inside the other, protects not only the compression spring but also the rising number counting mechanism, and the count of the counting mechanism is
In particular, it can be read through a window provided in the guide tube on the side of the main body element.

The lift or travel of the body element and the working part is limited by at least one radial stop that can be elastically deformed radially relative to the guide tube and can be secured in a guide slot extending in the direction of the upward movement. . In addition to this lift limitation, there is the advantage that the actuating part does not rotate with respect to the body element.

Embodiment E Figures 1 and 2 show an abdominal muscle training device having a main body element 1 substantially in the shape of a pot and an operating part 3 attached to the open end side of this main body element 1. . The actuating part 3 can be moved up and down relative to the body element 1 between two end positions. The body element l and the actuating part 3 surround a compression helical spring 5 acting in the direction of the upward movement, one end of which is housed in a centering guide 7 of the actuating part 3, and the other end connected to the body via a control element 9. It is in contact with element 1. A centering guide 11 of the control element 9 accommodates and guides the other end of the compression coil spring 5.

In the direction perpendicular to the direction of rise, the body element l is provided with belt hole connections 13 (FIG. 2) on both sides thereof, so that both ends of the longitudinally adjustable flexible body belt 15 can be connected to the belt hole connections 13. join to.

The working part 3 has a slightly convexly curved, substantially flat surface 19, which surface is formed of a layer of natural rubber 17 and is adapted to rest on the abdomen of the user.

The body belt 15 is worn on the user's body in such a way that when the user's stomach is depressed, the spring 5 is stretched and assumes the end position shown in FIG. 1.2. When the belly arches outward (inflates the belly), the operating part 3
Against the force of the spring 5, the body element l, which is fixed to the body by the body belt 15, is raised and reaches its other end position. A counting mechanism 23 actuated by the rib 21 of the working part 3 counts the number of rises of the working part that occur during the exercise. Counting mechanism 23 (second
(not shown) counts only in the vicinity of the other end position (the position in which the spring is fully compressed) and therefore only counts the number in which the actuating part is fully raised. The count value of the rise number counting mechanism 23 can be read through a window 25 provided in the main body element 1 in a direction perpendicular to the rise direction.

The body element 1 has a cylindrical guide tube 27 whose upper end, ie the end axially remote from the riding surface 19, is closed by a wall 29. The belt hole connecting portions 13 are located near the wall 29 on both sides of the guide tube 27 diametrically opposed to each other. The working part 3 has a closed annular wall section 31 , the peripheral edge of which is remote from the riding surface 19 includes a guide coaxially surrounding the guide tube 27 and projecting axially from the surface 19 . It is coupled to tube 33. The surface 19 is a substantially rectangular cover 35 that is substantially flat and slightly convexly curved.
, which is placed on the periphery of the wall section 31 facing towards the surface 19 symmetrically to the guide tube 27.33.

The entire circumferential surface of the wall portion 31 smoothly transitions from a circular cross section at its upper end to a substantially rectangular cross section at its other end (lower end). Attachment is achieved by holding the cover 35 to the wall portion 31 by means of pins 37.

The guide tube 27.33 is located coaxially with the helical compression spring 5 and is interconnected by snap-type coupling means in such a way that it cannot rotate relative to each other but can be displaced axially relative to it. In the end region of the tube 27 remote from the wall 29, two radially deflectable elastic tongues 41 are formed in diametrically opposed positions. The tongues are circumferentially separated from the tube 27 by axial slots 39, and each tongue has an outwardly projecting catch 43 at its free end. These locking portions 43 engage diametrically opposed axial slots 45 in the guide tube 27 to allow the guide tube 27 to be displaced axially but not in relative rotation.
I will guide you within 3.

In the terminal position shown in Figure 1.2, the locking part 43 is in the slot 4.
defined by stopping in contact with the edge 47 of 5,
The other end position is the main body element l installed near the wall 29.
It is defined by the abutment of the upper end of the wall portion 31 against the upper annular shoulder 49 . The elastic tongue 41 can snap-connect the body element 1 and the actuating part 3 together.

The control element 9 has a cylindrical wall section 51, which
1 includes a spring 5 and a guide tube 27.3, which will be described later.
3 and is axially displaceable within a cylindrical guide bushing 53 coaxial with the guide bushing 53. The control element 9 can be actuated by means of a handle 55 which is accessible from the outside of the wall 29. two cams 5
7 protrudes from the periphery of the wall portion 51 and cooperates with an axial thrust g59 extending axially from the edge 8 ('#i edge) of the control bushing 53 on the surface 19 side. When the control element 9 is rotated, the axial thrust path 59 moves the control element axially and changes the preload of the compression bar, f, 5. FIG. 3, which is a developed view of the control bushing 53, shows the cam 5.
7 shows details of two axial thrust paths 59 cooperating with 7. The circumferential ends of each axial thrust path 59 are defined by axial projections 61 , 63 which limit the rotation angle of the control element 9 as two end positions. The two end positions are provided with locking grooves 65,67 for locking the control element 9 in the end position. These locking grooves 65, 67 therefore have two limited spring preloads v
Establish I4 alignment.

As shown in FIG. 3, axial grooves 69 are provided between adjacent protrusions 61 and 63. These grooves 69 allow passage of the cams 69 and enable removal of the control element 9. Labyrinth bent portion 71 provided at the inner end of the multi-groove 69
prevents accidental disengagement of control element 9. The labyrinth bend 71 bends around a projection 61 at the end of the axial thrust path 59 that is axially remote from the working part 3 . In order to remove the control element 9, the spring 5 is pressed into the interior of the main body element l against the force of this spring and the protrusion 6
The cam 57 of the control element 9 must be introduced into the groove 69 by more than 1.

The inner diameter of the control bushing 53 is larger than the outer diameter of the compression coil spring 5. Therefore, when the control element 9 is removed, the spring 5
can be removed from the training tool and replaced with a spring of a different strength.

The body belt 15 may be provided with any type of fastener, but Velcro type fasteners are particularly suitable.

[Brief explanation of drawings]

Figure 1 is a cross-sectional view of the abdominal muscle training tool taken along line II in Figure 2, Figure 2 is a cross-sectional view of the abdominal muscle training tool taken along line ■-■ in Figure 1, and Figure 3 is the cylinder of the abdominal tfI training tool. It is an expanded view of the shape control bushing. Main body element 3: Working part 5: Compression spring 9: Control element 13: Connection hole member 15: Body belt 17: Natural rubber layer 19: Support surface 23: Rising number counting mechanism 27.33 Ni guide tube 41: Elastic tongue piece 43: Locking part 45: Guide slot 53: Control block 55: Handle 57: Cam
59: Axial thrust path 61: Projection 65.
67: Locking groove 69: Axial groove agent Patent attorney Kyo Asa Yu Sangai 4 people

Claims (1)

Claims: 1. a body element and an actuating part guided to move between two end positions with respect to the body element; a compression spring clamped between the body element and the actuating part; a lift counting mechanism actuated by the upward movement of the actuating part with respect to the body part, and fixed to the body element by at least two connecting members spaced apart from each other in a direction perpendicular to the direction of the upward movement; a flexible body belt, the actuating portion having on a side remote from the body element a substantially flat support surface adapted to rest on the abdomen of the body, the support surface comprising: a flexible body belt; an abdominal muscle exerciser extending in a direction perpendicular to the direction of movement of the working portion, the body being rotatable about an axis extending substantially along the direction of the upward movement and axially displaceable; a control element mounted in an aperture of the element, the compression spring being clamped between the actuating part and the control element, the diameter of the control element being larger than the diameter of the compression spring; and an interrelated axial thrust element disposed on the control element and the body element in the support path of the compression spring, the thrust element being responsive to relative movement of the body element and the control element; operative to change the relative axial positions of the body element and the control element, one thrust element having an axial groove inclined with respect to its associated other thrust element; and an axial opening for removing a control element from the opening in the body element, the control element having an adjustment handle on the side remote from the actuating part in the direction of the upward movement. An abdominal muscle training device characterized by: 2. The abdominal muscle training device according to claim 1, wherein the control element has a cylindrical shape and is guided so as to be rotatable and movable in the axial direction within a control bush protruding from the main body element. 3. Abdominal muscle training device according to claim 2, wherein the control element carries at least one radially projecting cam, the leading edge of the control bushing facing the working part being associated with the cam. An abdominal muscle training tool that forms an axial thrust path. 4. The abdominal muscle training tool according to claim 3, wherein the axial thrust path has a locking groove for locking the control element at a predetermined rotational position. 5. The abdominal muscle training device according to claim 3 or 4, wherein the axial groove provided in the control bush and through which the cam passes is formed by an axial protrusion, so that the axial thrust path associated with the cam is An abdominal muscle training tool that is separated from the body. 6. The abdominal muscle training tool according to claim 3 or 4, wherein the control element carries two cams facing each other in the diametrical direction. 7. Abdominal muscle training device according to claim 1, wherein the body element and the working part each carry a guide tube, one of which is guided coaxially within the other and which is connected to the compression spring. An abdominal muscle training tool that coaxially surrounds the 8. The abdominal muscle training device according to claim 7, wherein one of the guide tubes carries at least one locking portion that is radially deflectable and protrudes in the radial direction with respect to the other guide tube. , the other guide tube is provided with a guide slot extending in the direction of the upward movement for each of the locking portions, the locking portions radially engaging the guide slots; restricts the upward movement of the locking portion in the direction of the force of the compression spring. 9. The abdominal muscle training device according to claim 8, wherein the locking portion is provided on an elastic tongue piece formed on the one guide tube and protruding in the axial direction. 10. The abdominal muscle training device according to claim 8, wherein the other guide tube is provided in the operating portion and surrounds the one guide tube on the outside in the radial direction. 11. The abdominal muscle training device according to claim 9, wherein the other guide tube is provided in the operating portion and surrounds the one guide tube on the outside in the radial direction. 12. Abdominal muscle training device according to claim 10 or 11, wherein the working part has the shape of a pot, the bottom of the working part constitutes the flat support surface, and the side walls of the working part constitute the flat support surface. An abdominal muscle training device connected to the other guide tube near the edge farthest from the bottom. 13. The abdominal muscle training device according to claim 7, 8 or 9, wherein the rise number counting mechanism is disposed within the guide tube of the main body portion, and the guide tube is disposed in the guide tube at a substantially intermediate position between the two connecting members. An abdominal muscle training device that allows you to read the measured values through a window in the tube. 14. The abdominal muscle training device according to claim 10 or 11, wherein the rise number counting mechanism is disposed within the guide tube of the main body portion, and is attached to the guide tube at a substantially intermediate position between the two connecting members. An abdominal muscle training tool that allows you to read the counted values through a window. 15. The abdominal muscle training device according to claim 1, wherein the support surface is covered with an elastic material. 16. The abdominal muscle training tool according to claim 15, wherein the elastic material is natural rubber. 17. The abdominal muscle training device according to claim 1, 2 or 3, wherein the spring is a compression coil spring.