JPS61502202A - linear motion resistance cell - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] name of invention linear motion resistance cell Technical field The present invention relates to a linear motion resistance cell, particularly for a multi-section muscle training machine. However, it is not limited to this.

Background technology In many different machines, the resistance to linear motion can be adjusted and the user can It may be necessary to be able to select the resistance mode. typical mode A bar provides resistance to linear movement in the opposite direction or resists movement in one direction. exerts an adjusted resistance force against motion, and relatively weak resistance against motion in the opposite direction This is a case where force is applied. Typical applications for such linear motion resistance cells include a variety of Muscle training that requires applying resistance to exercise when performing various types of muscle training It is a kneading machine. In the past, various types of strength training machines used a large number of hydraulic resistance cylinders in various types. This multi-functionality can be achieved by changing and attaching it to the machine for different purposes. Attempts were made to For example, using one cylinder piston/cylinder assembly The design provides resistance to movement in two directions and also provides a separate hydraulic piston/series. It is also possible to provide a ring assembly that provides resistance to movement in only one direction. There is.

In such a configuration, the user must inspect the inside of the machine each time he or she wishes to change the functionality of the machine. It is inconvenient to use because the hydraulic piston/cylinder cylinder has to be replaced. Yes, it takes time.

Disclosure of invention Therefore, it is an object of the present invention to meet at least the above-mentioned needs or to simplify the Eliminate or minimize the above drawbacks in simple but effective ways. or at least a linear motion resistance cell that allows the general public to make useful choices. It is to provide.

Therefore, the present invention relates to a linear motion resistance cell, which consists of a cylinder , a piston actuated by a starting rond and capable of linear movement within the cylinder, and a cylinder Located at both ends of the cylinder, the inside of the cylinder is divided into two chambers, one on each side of the piston. one or more passageways leading from one of said chambers to the other of said chambers; , through the passage, by the movement of the piston in the cylinder, from one side of the two chambers upwards. The working fluid within the chamber is allowed to flow, and the passage is connected to the and valve means for regulating the amount of fluid passing through the passage, said valve means being actuated by a control means. at least three selectable modes of operation of the piston within the cylinder. Special clothes Showa 61-502202 (3) The feature is that a predetermined resistance force can be applied to two movements. It is said that

(i) Adjusted resistance to movement in two directions (ii) Movement in one given direction Adjusted resistance to movement and relatively weak resistance to movement in the opposite direction (iii) Adjusted resistance and reaction to movement in the opposite direction to (ii) relatively weak resistance to movement in the opposite direction The valve means and control means can select any one of the above three modes of operation. It is desirable to configure it as follows.

The above three passages are provided, and each of the above two passages has two built-in check valves. The above valve means is provided, one of the check valves being closed during movement of the piston in one direction, and the other being closed during movement of the piston in one direction. One check valve is oriented closed while the piston moves in the opposite direction. This is desirable.

One end of the passageway extends all the way to the surface, and the valve means includes a cover plate that engages this surface. and a frontage, the control means moving the cover along the surface so that the control means moves the cover along the surface. , by aligning and separating the opening from the passage in a prescribed manner to open the passage. , it is desirable to have a selected mode of operation available.

At least one opening in the cover plate gradually opens and closes a passage aligned with the opening. the adjusted resistance to movement may be varied by operation of the control means; It is desirable to form it as follows.

When the user moves the actuation means, the force is transmitted to the actuation rond, which causes , comprising actuating means arranged to move the piston in a linear direction within the cylinder. It is desirable to incorporate this linear motion resistance cell into a strength training machine.

Brief description of the drawing Although other embodiments are within the scope of the invention, by way of example only and with reference to the accompanying drawings: , preferred embodiments of the present invention will be described below.

FIG. 1 shows a multi-part muscle training machine incorporating a linear motion resistance cell according to the present invention. An exploded perspective view, Figure 2 shows the muscle training machine shown in Figure 1, which has a built-in linear motion resistance cell. Figure 3 is a side view of the components of the machine; Figure 3 is a plan view of the components shown in Figure 2; Figure 4 is a side view of the components shown in Figure 2; , longitudinal section of a linear motion resistance cell according to the invention, FIG. 5 is a plan view of a cover plate used for the valve means of the linear motion resistance cell shown in FIG. figure, Figure 6 incorporates fluid transfer passages for use with the linear motion resistance cell shown in Figure 4. A plan view of the disk, FIG. 7, a longitudinal cross-sectional view of another form of linear motion resistance cell according to the invention. , FIG. 8 is a plan view of the linear motion resistance cell shown in FIG. 7; Figure 9 shows a motion transmission system used in the muscle training machine shown in Figure 1, which has multiple parts. Figure 10 is a perspective view of the machine used in the muscle training machine with multiple parts shown in Figure 1. FIG. 11 is a block circuit diagram of an electronic monitoring device, and a perspective view of the electronic monitoring device. and FIG. 12 show the pressure reducing system for use with the electronic monitoring equipment shown in FIGS. 10 and 11. FIG.

Embodiment of the invention In a preferred embodiment of the invention, the linear motion resistance cell is a multi-section strength training cell. Although built into the machine, this type of linear motion resistance cell can be installed in different types of machines. However, it is used for many other purposes.

Referring to Figure 1, the multi-part strength training machine includes a standing platform (2) at one end and It has a base (1) with a standing column (9). This strength training machine has a There is a seat (3) mounted on the seat support rail (4). The wheel (4) is supported within the seat bracket roller cage (5) and is mounted on the base (1). The cage (5) is configured to be slidable in a direction parallel to the cage (5). B The cage (5) can be expanded and contracted to adjust its height, and can be positioned with a stopper (8). It is supported by the sheet support column (6〉) that performs positioning.The sheet roller case The linear movement of the sheet relative to the gear (5) can be locked with a stop pin (7). Ru.

The linear motion resistance cell is mounted on the actuating column (9) by means of a clamp (20). within a housing (10) that is adjustable to provide the desired position along the actuating column. can be as high as . Linear motion resistance cells are and is connected to a spline coupling shaft (11), which is connected to the housing. It protrudes from one side of the handle (1o), and the handle (12) can be fitted on that side. can.

This strength training machine also has an attachment for lateral training and a stop. Assembly of the footrest, described further below, which can be attached to the actuating column (9) via the screws The body (13) is provided.

Referring to FIGS. 2 and 3, the linear motion resistance cell housing (10) The moving column (9) is surrounded and tightened by the device (20) at the desired position along the operating column (9). It should be noted that it is equipped with a sleeve part (5o) which can be fixed at a height of cormorant.

The other part of the housing includes a pivot pin (17) near the top of the cylinder. A hydraulic piston/cylinder assembly mounted within the housing is the locator.

A starting rod (28) projects from the lower end of the cylinder and connects to the splined coupling shaft (11). The rotatable block (1) is pivotally supported between both outer ends of the crank arm (15) attached to the 6) It has reached the inside. On the other hand, the spline coupling shaft (11) is attached to the housing (10). Since the shaft (11) is supported internally, when the shaft (11) rotates, the crank arm ( 15> rotates, and the starting iron (28) engages and disengages from the cylinder (51). Nothing When under load, the starting iron is connected to the rotatable block (16) and the anchor at the upper end of the housing. Retracts into the cylinder via a tension spring (18) that extends between one point (19) .

The spline connection shaft (11) also has a An elongated quarter-circular plate (40) is provided near the periphery of the quarter-circular plate. A plurality of horizontal bins (39) arranged at intervals are provided.

The quarter plate (39) and the bin (39) are arranged as follows in more detail: Used with the lateral exercise attachment and footrest assembly shown in FIG.

The linear motion resistance cell is controlled and actuated by the actuation rod (28) to A cylinder (51) with a built-in piston (23) that performs linear motion inside the cylinder ( (Fig. 4). This piston has an O-ring between the piston and the cylinder wall. a ring seal (35) and a knife that acts as a sliding wheel holder between the piston and cylinder (4). It is equipped with a long wear ring (34). The piston/cylinder assembly further includes: There are two chambers (52) in the cylinder, one empty on each side of the piston (23). end caps (24) and (2) with seals (39) defining 5).

The piston further includes a passage (3) extending from the top to the bottom through the piston. 1), (32) and (33) are provided. This cylinder contains hydraulic fluid. The cylinder is filled with a working fluid, so that the movement of the piston inside the cylinder Thus, fluid is forced from one chamber to the other via at least one passageway. sent to. Passages (54) and (55) are provided with check valves oriented in opposite directions. (54) and <55) are provided, and by moving the piston in one direction, 1 One check valve closes and the piston moves in the opposite direction, causing the other check valve to close. Close, and the previous check valve opens.

The piston also has a cover plate rotatably mounted on the upper surface of the piston. 3), and this cover plate (3) is provided with a hollow shaft (3) coaxial with the starting shaft (28). 0A>, it can be rotated. On the other hand, the control axis (30A) It can be rotated by the eel (21). The top of this wheel (21) On the surface (Fig. 3), there is a mark that can be read against the needle (22) attached to the starting rond (28). Attached is an indication that it can be done.

The plan view of the piston (23) shows passages (31) and (32) (check valve (54)). and (55)) and a third passage (33) which is an open passage without a valve. ) is shown in FIG. The shape of the cover plate (30) includes an opening (36) and Equipped with an edge whose distance from the center A of the starting rond passing through the center hole of the disk (30) changes. The resulting cutout is shown in FIG. 5, which shows section (37).

The opening (36) and the notch (37) allow the cover plate (30) to connect to the piston (23). When positioned in place on the top surface, the aperture (36) defines the passageway (31) or is aligned with one of the passages (32), and the edge of the notch (37) is a part of the other passage. is positioned so as to cover the For this purpose, both passages (31) and (32) ) are arranged directly opposite each other in the piston disk (23), and the third passage (33) is Diagonally and spaced from the diameter where both previous passages (31) and (32) are located. diameter - preferably 9 for the diameter encompassing passages (31) and (32) Position on diameter 0'.

Adjust the operation of the linear motion resistance cell to select any of the following three modes of operation: A predetermined resistance force is applied to the movement of the piston within the cylinder. be able to.

(i) Adjusted resistance to movement in both directions; movement in one given direction adjusted resistance to and relatively weak resistance to movement in the opposite direction (iii) Adjusted resistance to movement in a given direction opposite to (ii) and a relatively weak resistance to movement in the opposite direction. Selection of the desired mode is made by rotating the adjustment wheel (21) according to the support of the hands (22). At position 1 (the position shown in Figure 3), the resistance force against the downward movement of the piston is It can be adjusted by making it only work. adjustment wheel When rotated to this position, the frontage of the cover plate (30) is aligned with the passage (31). and the cutout portion (37) is aligned with the passageway (32).

The passageway (33) is completely covered by a cover plate (30).

The downward movement of the piston also closes the check valve (54), allowing fluid to flow through the passageway (32). It is possible to flow from chamber (53) to chamber (52) only through the chamber. Numbered in Figure 3. Adjust the adjustment hole along the predetermined arc indicated by the + and - symbols on both sides of position 1 indicated by the symbol. When the eel is rotated, the notch where the radius from the center of the cover plate (30) changes is located at the part (3). 7) by covering and exposing the passageway (32). The passage (32) was opened and closed in 1961-502202 (5). This allows the resistance to downward movement to be finely adjusted. For example, edge When the cover plate is rotated so that the portion (56) is aligned with the passageway (32), the passageway (32) is relatively unobstructed and the fluid flows relatively freely within the passageway (32). The resistance force acts almost exclusively against the movement of the piston in the cylinder. do not have. The cutout is such that the edge 8IS (57) of the portion (37) is aligned with the passageway (32). When the sea urchin cover plate (30) is rotated, this passage is completely covered and the passage of fluid is prevented. However, a relatively large resistance force is applied to the piston in the cylinder. exerts a large resistance force against motion. The piston is activated by the actuation of the starting rod (28). When the ton is moved upward within the piston, the check valve (55) closes and the check valve (55) closes. 54) opens, closing passageway (32) and opening passageway (31). Passage (31) are aligned with the openings in the cover plate (30), so that the movement of the fluid through the passages is A relatively weak resistance force acts against the upward movement of the piston in the cylinder. The resistance to this will also be relatively weak.

In the second operating mode, the adjusting wheel is turned until the display (3) coincides with the hand (22). When (21) is rotated, the opening (36) is aligned with the passageway (32) and the notch is The portion (37) is aligned with the passage (37). Linear motion resistance cell in this mode The operation is the same as in the mode described above, but the positions of both check valves are opposite. The upward movement of the piston in the cylinder is subject to a controlled resistance force and A relatively weak resistance force acts against the downward movement of the piston within the cylinder.

Again, the resistance to upward movement is indicated by number 3 on the adjustment wheel. The adjustment wheel moves the cover along the arc marked with the symbols 10 and - on either side of the position. Adjustment can be made by rotating the plate (30).

In the third operating mode, the display (2) of the adjusting wheel 21) is set to the hand (22). Once aligned, the notch is moved to align with the passageway (33). Passage (33) and The opposite piston (23) side is not cut out, so there is no opening in the cover plate (30). (36) is completely opened. In this mode, the piston in the cylinder Adjusted resistance to movement in both directions acts.

The preferred operation of the linear motion resistance cell allows the selection of three different modes of operation: In addition, there is a lifting platform that allows you to adjust the resistance and fine-tune the resistance to exercise. However, it is clear that this device can be simplified to perform other functions. Let it be understood. For example, omitting one of the passages (31), (32) or (33) Alternatively, only one of the two operating modes may be selected. Also, the notch is Part (37) is provided with an edge with a constant radius from the center of the cover plate, and It is also possible to make the resistance to movement in the direction constant and not adjustable. stomach. However, by selecting three possible modes of operation, It is desirable to be able to adjust the resistance force.

One embodiment of a linear motion resistance cell is described with reference to Figure @4; It will be appreciated that the file can be configured in other forms. Regarding this form, see Figure 7 and This will be explained with reference to FIG. In these drawings, the corresponding reference numbers are , depicting parts similar to those described with respect to FIG.

In the form shown in FIG. 7, the starting rod (28) touches the upper end of the cylinder (51). The piston (58) is a simple piston with no through passage.

Instead, it is built into the upper end of the cylinder (51) and has a compartment near the upper end of the cylinder. A passage is provided in the disc (59) forming the (6o). This disk (59) is It has a very similar shape to the piston (23) in the form shown in Fig. 4, and is shown in Fig. 6. It has passages (31), (32) and (33) with similar arrangement, and has passages (31) and (33). and (32) respectively have built-in check valves (54) and (55). mosquito The bar plate (61) also has the same shape as the cover plate (30) shown in FIG. Rotatable via adjustment rod (62) actuated by adjustment wheel (63) It is. This adjustment wheel (63) has a readable position relative to the hand (64). A similar display (Figure 8) is attached.

A sleeve (64) is connected between the compartment (60) and the lower end of the cylinder (51). A fluid conduit is provided.

This sleeve (64) is arranged coaxially with and spaced from the cylinder. and sealed to the cylinder via the end (65) cooperating with the seal (29). There is. An opening (66) is provided in the cylinder wall and separates the compartment "!" (60) and the cylinder wall. The sleeve (64) passes near the upper end of the sleeve (64) and extends to the inside (67) of the sleeve (64). Ru.

The operation of the linear motion resistance cell shown in FIGS. 7 and 8 is similar to that of the embodiment shown in FIG. However, due to the upward movement of the piston in the cylinder, the fluid is Forcibly sent through the selected passage of the disc (59), compartment? (60) reach within and then passes through the opening 66) to reach the inner part (67) of the sleeve (64). , flows down along the outside of the cylinder and inside through the opening (66) in the lower end of the cylinder. It flows into the chamber (53). The downward movement of the piston inside the cylinder causes the flow to The direction of body flow is reversed.

However, by the same method as described in detail, the cover plate (61) on the disc (59) is rotated. The opening (36) and the notch move the part (37) to open the passageway (31) (3). 2) and (33) by aligning and separating with the selected one. , the flow rate of the fluid can be adjusted.

When the starting rod (28) engages and disengages the cylinder (51), the cylinder Since the volume inside the cylinder (51) changes, an air pocket (or Other means of compensating for volume changes) need to be provided.

Referring to Figure 1, when a muscle training motion is applied to the handlebar 12), the spatter The in-coupling shaft (11) rotates so that the activation rod (28) is attached to the needle (22). On the other hand, the same method as adjusting by rotating the adjustment wheel (21) This makes it possible to engage and disengage the piston (51). some muscle training In some cases, the resistance force is applied only to movement in one direction, and another strength training exercise is applied. In some cases, the resistance force can be applied only to movements in the opposite direction. desirable. The user rotates the adjustment wheel (21) and the marked table Rotate the adjustment wheel in the direction indicated by + and - on both sides of the figure to reduce the resistance. By making fine adjustments, the desired mode can be easily selected.

For some strength exercises, the user synchronizes two components such as a grip so that they interact with each other. Desirable to move in either direction or in the opposite direction. In order to provide such convenience, this The muscle strength training machine includes an attachment for lateral strength training, which will be explained below with reference to Fig. 9. The seat is equipped with a footrest (13) assembly. This device is mounted on a bracket (68 ), from which the user can sit on the seat (3). The footrest (70) to be used protrudes.In this installation, the bracket (68) is It is fixed to the pillar (19) via a bottle passing through (71). support flange are provided to protrude outward from the bracket (68) and extend upwardly. A splined pivot shaft spigot (14) is provided. Each spigot is , rotatable within the plate (72) by mounting in suitable bearings (not shown). becomes.

At the end of each handle there is a splined spigot that connects the handle (12). a crown wheel portion (14) having a plurality of teeth extending upwardly when engaged with the tooth (14); 38) is a provision. (This crown wheel part is permanently attached to the handle (12). However, for the sake of clarity, the handle in Figure 1 is not shown. ).

If lateral strength training is to be performed, the handle (12) should be fitted with a spline connection. Remove it from the mating shaft (11), and as shown in Figure 9, attach the spline-coupled rotating shaft Position it on the got (14). Next, operate the clamp (20) to attach the column ( 9), lower the linear motion resistance cell housing until the quadrant plate (4o) It is located between the two crown wheel parts (38), and the bottle (39) is located between the two crown wheel parts (38). Make sure it meshes with your teeth.

Next, tighten the clamp (20), and also attach the handle (12) to the spigot (1). 4) Securely position the handle on these spigots so that it does not come off accidentally. By doing so, the housing (1o) is locked in place. Han Due to the synchronized counter-rotating action of the buckles (12), the crown wheel (38) It rotates on the got (14), and the teeth of the crown wheel (38) engage with the bottle (38). and thus the quarter-circle plate (4o) rotates about the axis <11). this In this way, the crank arm (15) is rotated and attached to the pivot block (16). The connected activation rod (28) performs a disengagement movement with respect to the cylinder (51). .

Select the operating mode of the linear motion resistance cell as before and operate the handle (12). can provide the desired form of resistance to corrosion.

In addition, the strength training machine is equipped with an electronic monitoring device, so that the user can determine the amount of training he or she does. It is desirable to be able to See Figures 10 and 11. Then, this monitoring device is attached to the cylinder (51) and monitors the inside of the cylinder during operation. Equipped with an electric pressure transducer to monitor oil pressure. Hydraulic pressure in the cylinder is directly proportional to the force exerted on the handle (12).

This transducer is connected to an electronic circuit via a flexible electrical guru (48). .

Since this circuit is housed in a case (41) with a magnetic back surface (42), The monitoring device can be mounted at any convenient location on the metal part of the muscle training machine. be able to.

The supervisory circuit performs two basic functions. In the first function, which mode However, the force exerted by the user on the handle (12) is displayed on the digital display (43). will be displayed. In the second function - C, the user can calculate the total energy consumption of the digital can be read.

During operation, the circuit automatically monitors the user's applied force and sums the value S1.

The summed values are sent to the display device (44) at regular intervals.

Referring to Figure 10, it can be seen that the basic operation of electronic elements takes place as follows. Ru. The pressure converter converts the hydraulic pressure inside the cylinder (51) into voltage at the point (45). do. Some resistance buffering and linear amplification is done and the increased voltage is at point (46 ), where it is shunted in two directions.

First, the operation of one circuit will be explained regarding the first function. The voltage at point (46) is , appears at the input of an analog-to-digital converter (ADC), which A corresponding binary coded decimal (BCD) output is generated.

This BCD value then appears at the entrance of the 7-segment display decoder, and its output is displayed on the LCD Pass through the display (LCD) exciter and reach the 3.5 digit LCD (43) after - .

The operation of the circuit in the second function is as follows.

The voltage at point (46) appears as the input voltage to the frequency converter and The converter generates a linearity-related frequency output at point (47). first, Press the reset button shown to reset the meter (therefore the acting force value display (44). )) to zero. In addition, when the pressure inside the cylinder (51) is zero, at the point (47) Note that the frequency output at is also zero. This frequency is sent to the BCD counter. Therefore, they are summed and the output is stored in storage. Every second, the pulse generator records A short pulse is sent to the memory circuit, and the latest BCD value of the counter is stored in the next Sunagawa (and (and display).

The output of the storage device passes through the BCD, reaches the 7-section display decoder, and then the LCD exciter. After that, it is turned on. The final value is displayed on the 4.5 digit LCD (44).

In some cases the pressure from the cylinder (51) is quite high and to cope with this high pressure Therefore, it may be necessary to use an expensive pressure transducer1, thus reducing the The pressure from the converter (51) is balanced and reduced using an inexpensive pressure transducer. It is desirable to be able to use it. This pressure reduction is carried out using the apparatus shown in Figure 12. Therefore, it can be done. The pressure dividing device includes a main body (73), the main body ( 73) contains a large end (75) movable within the cylinder (76) and a smaller diameter cylinder. A floating screw (74) with a movable small end (77) is positioned within the cylinder (78). 60 ring seals (79) and (80) are provided, and a pin is installed in each cylinder. This allows the stone to be sealed. The cylinder (76) is secured by a retaining ring (81). One end is closed with an adapter (80) fixed inside the main body.

When used, pressure from the linear motion resistance cell is applied to the cylinder (78) and the piston. acts on the small end (77) of the pin (74). This pressure is applied to the cylinder through the piston. to another hydraulic fluid within a chamber (82) defined within the chamber (76); The pressure is applied to the cylinder (78) due to the large surface area of the piston at point (75). ) is reduced to balance the pressure inside. The outlet of the chamber (82) is connected to a pressure transducer and calibrate this pressure transducer to compensate for the pressure drop in the device shown in Figure 12. can do.

In this way, the strength training machine allows the user to perform a number of different strength exercises. It's sea urchin. While sitting on the seat (3) or standing on the stand (2) In either case, the user uses his or her hands or feet to operate the handle, thereby You can do strength training. The angle of the handle can be adjusted as desired, and The position of the seat can also be adjusted as necessary. However, this muscle training machine The main feature is that users can easily and quickly adjust and select among three operating modes. Linear motion resistance cell that can obtain the desired resistance force in any mode This is the function of

However, this linear motion resistance cell is particularly suitable for use in strength training machines. , adjustable resistance to exercise in different modes that can be selected by the user. Can be used on any other type of machine that needs to exert drag .

se,it % Procedure amendment writing method) %formula% 2゜Name of invention　Linear motion resistance cell 3. The one who sharpens the correction Relationship to the case: Applicant Address: 2370 Glen, Ninny South Wales, Commonwealth of Australia 328 Gray Street, Inns 0 parts and Moro - Notice (Shipping date: June 10, 1986) 6. Subject of correction (1) Patent applicant column in the document pursuant to Article 184-5, Paragraph 1 of the Patent Act (2) Translation of the description and claims (3) Document proving authority of representation 7. Contents of correction (1) As per the revised attached document pursuant to Article 184-5, Paragraph 1 of the Patent Law.

(2) Submit a copy of the specification and claims as attached. However, the content has changed none.

(3) As per the attached power of attorney and translation.

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Claims (17)

[Claims] 1. actuated by a cylinder and actuating rod to perform linear motion within the cylinder Provided at both ends of the piston and cylinder, one chamber on one side of the piston within the cylinder. a sealing means defining two chambers and a piston moving within the cylinder; The front of the chamber is forced to flow from one side of the chamber to the other side of the chamber. It is arranged so that the flow rate of the working fluid in both the recording chambers and the fluid passing through can be adjusted. , a passageway and associated valve means, said valve means being actuated by control means; i) Adjusted resistance to movement in both directions (ii) Adjusted resistance to movement in one given direction only and in the opposite direction. relatively weak resistance to movement of (iii) Adjusted resistance to movement in a given direction opposite to (ii) and relatively weak resistance to movement in the opposite direction Selectable between at least two of three operating modes characterized by providing a predetermined resistance to the movement of the piston within the cylinder. linear motion resistance cell. 2. said two passages are provided, said valve means being incorporated in at least one of said passages; The linear motion resistor according to claim 1, characterized in that the linear motion resistor is provided with a check valve that is anti cell. 3. The valve means and the control means select any one of the three operating modes. As set forth in claim 1, the method is arranged so as to be selectable. Linear motion resistance cell. 4. said three passages are provided, said valve means being incorporated in each of said two passages; While the piston moves in one direction, one side closes and the piston moves in the opposite direction. characterized in that it comprises two check valves oriented such that the other closes during the A linear motion resistance cell according to claim 3, characterized in that 5. one end of said passageway all reaches the surface and said valve means engages the surface to define an opening. a cover plate with a cross section, the control means moving the cover plate along the surface; Then, the opening aligns with and separates from the passage in a predetermined manner, opening and closing the passage. , a selected mode of operation. The linear motion resistance cell described in Sec. 6. At least one opening in the cover plate gradually opens and closes a passage aligned with the opening. the adjusted resistance to movement is varied by operation of a control means; A linear motion resistance cell according to claim 5, characterized in that: 7. a passageway is axially aligned within the disk oriented at right angles to the cylinder; and The cover plate is coaxial with the disc and rotatable on the surface of the disc by operation of the control means. The straight line according to claim 5 or 6, characterized by comprising a circular plate. Exercise resistance cell. 8. The two passages containing check valves are arranged directly opposite each other in the disc, and the third passage The channel is located on a diameter spaced diagonally from the diameter on which the previous two channels are located. with all three passages equally spaced from the center of the disk, and a cover plate. has a first opening, and the first opening is configured to rotate a predetermined arc of rotation of the cover plate relative to the disc. along the opening, the passage is arranged in alignment with the opening and can be opened freely. , and a second opening provided directly opposite the first opening extends along the predetermined circular arc of rotation. , arranged so that the passage aligned with the second opening can be gradually opened and closed; A linear motion resistance cell according to claim 7, characterized in that: 9. A disc is attached to or integral with the piston, and the passage is extending between the two chambers through the piston, and a cover plate coaxial with the actuating rod. Claim 7 or 8 is characterized in that it is rotatable by the axis of A linear motion resistance cell described in any of the following paragraphs. 10. A disk is attached to the cylinder wall near one end of the cylinder and has a section at said one end. forming a compartment and providing a fluid conduit between the compartment and the other end of the cylinder; The linear movement described in either claim 7 or 8, characterized in that dynamic resistance cell. 11. The fluid conduit is spaced apart from and coaxial with the cylinder. with one end facing toward the outer sleeve sealed to the cylinder and the other end of the cylinder. , an opening provided in the compartment and extending through the cylinder wall and into the inside of the sleeve. 11. A linear motion resistance cell according to claim 10, comprising: a linear motion resistance cell; 12. characterized by comprising a linear motion resistance cell according to any of the preceding claims. Muscle training machine. 13. It can be attached to a shaft and the shaft can be rotated by the applied force. The shaft is provided with an actuating handle that can be rotated, and the shaft is equipped with a starting rod for the linear motion resistance cell when the shaft rotates. Claim 12, characterized in that there is provided a crank arranged to move the The muscle training machine described in . 14. Attach the linear motion resistance cell to the column so that the handle extends to one side of the column. , and a claim characterized in that a seat is provided between the pillars and the standing front behind the pillars. Muscle training machines described in Scope Item 13. 15. The shaft is provided with downwardly directed gear means and the post is provided with a mounting bracket. Install the linear motion resistance cell along the column until it is above the bracket. An upwardly extending gear is provided which can mesh with the downwardly extending gear of the shaft when the shaft is lowered. an upwardly extending pivot shaft capable of rotatably supporting a handle; By synchronizing and rotating the handle in opposite directions around the pivot axis, Claim 1, characterized in that the gear means is rotated and thus the shaft is rotated. The muscle training machine described in Section 4. 16. Measures the fluid pressure in the linear motion resistance cell and displays the force acting on the handle. claim 1, characterized in that it comprises electronic measuring means activated by a transducer that The muscle training machine described in any one of Items 12 to 15. 17. Using a transducer in conjunction with a pressure reducer with a piston floating within the housing one end of the piston has a larger surface area than the other end, and a linear motion resistance cell fluid pressure from the piston acts on the small end of the piston and is exerted by the large end of the piston Claim characterized in that a balanced vacuum acting on a second fluid communicating with the transducer Muscle training machines listed in item 16.