JP4696837B2 - Chair massage machine - Google Patents

Description

  The present invention relates to a chair type massage machine comprising a movable block having a treatment element in a backrest part so as to be movable up and down.

  2. Description of the Related Art Conventionally, there is known a chair type massage machine in which a movable block having a treatment element is vertically movable in a moving space formed by opening forward in a cover of a backrest portion. In the chair type massage machine configured as described above, if the body of the user falls excessively in the movement space of the backrest, there is a risk of damaging the user by the treatment element, In order to avoid this, a configuration has been adopted in which a drop prevention belt is stretched in front of the movable block in the moving space.

  However, the above-described drop prevention belt may bend in the left-right direction and be displaced to one side. In this case, there is a problem that the drop prevention belt is caught by the treatment element and causes a problem.

  In order to solve the above problem, for example, as disclosed in Patent Document 1, the drop prevention belt is formed to have a width that is approximately the same as the width of the opening of the moving space, and It is also conceivable to prevent contact with the treatment element projecting forward from the movable block by providing a mechanism that largely detours the rear side so as to avoid this at the position where it is located.

However, such a mechanism is very large, and there is a problem that the entire internal mechanism is increased in size and cost.
JP-A-9-262263

  The present invention has been invented in view of the above problems, and it is possible to reliably prevent a user from dropping by a simple and inexpensive configuration using a drop preventing belt, and the drop preventing belt is used as a treatment element. It is an object of the present invention to provide a chair type massage machine that can surely prevent the occurrence of problems such as being caught on the chair.

In order to solve the above-mentioned problem, the present invention is a movable block having two pairs of left and right treatment elements 20 in a moving space S formed by opening forward in the cover 5 of the backrest 2. 7 is a chair-type massage machine that is arranged so as to be movable up and down, and a drop-preventing belt 13 that is stretched in the vertical direction so as to straddle the front of the movable block 7 in the moving space S; And a guide portion 14 that is provided so as to protrude forward from the movable block 7 and has an insertion hole 16 through which the drop-preventing belt 13 is inserted in the up-down direction. Of these, it is installed between the pair of treatment elements 20 having a larger interval in the locus of the massage operation, and is also used as a stopper for preventing the user from excessively entering between the left and right treatment elements 20 And

  In the chair type massage machine configured as described above, the drop prevention belt 13 is always stretched in front of the movable block 7 to reliably prevent the user from dropping, and is stretched in the vertical direction. Since the fall prevention belt 13 is prevented from being displaced in the left-right direction by the guide portion 14, it is possible to surely prevent the occurrence of problems such as the fall prevention belt 13 being caught by the treatment element 20. And since the said guide part 14 should just be installed in the front side of the movable block 7, it is simple in structure, Therefore It can provide as a chair type massage machine of a simple and cheap structure.

In addition, even if the movable block 7 moves up and down , the drop prevention belt 13 smoothly slides on the inner surface of the insertion hole 16 penetrating in the vertical direction, and the head and neck of the user enter between the treatment elements 20. it the case, by the guide portion 14 projecting forwardly hit through the cover 5, the head and neck is prevented from excessively entering between massaging head 20. This safety is ensured by.

Further , the sagging prevention belt 13 in which the upper end portion 13a and the lower end portion 13b are connected to the frame portion 6 of the backrest portion 2 is pulled rearward by being inserted into the insertion hole 16 of the guide portion 14. Is preferred. By doing so, the drop prevention belt 13 is always held in a state having a constant tension regardless of the vertical position of the movable block 7 .

  Furthermore, it is also preferable that the inner surface of the insertion hole 16 of the guide portion 14 that is in sliding contact with the drop prevention belt 13 is formed in a circular arc shape along the curve of the drop prevention belt 13 pulled rearward. By doing in this way, troubles such as wear and abnormal noise generation at the sliding contact portion between the guide portion 14 and the drop prevention belt 13 generated when the movable block 7 is moved up and down, and breakage of the drop prevention belt 13 are caused. Can be prevented.

  It is also preferable to provide a rotatable roller 17 at a sliding contact portion of the guide portion 14 with the drop prevention belt 13. By doing in this way, troubles such as wear and abnormal noise generation at the sliding contact portion between the guide portion 14 and the drop prevention belt 13 generated when the movable block 7 is moved up and down, and breakage of the drop prevention belt 13 are caused. In addition, it is possible to obtain a massage effect by the roller 17 stimulating the user via the cover 5.

  Each configuration described above can be appropriately combined without departing from the gist of the present invention.

  The present invention reliably prevents the drop of the user by a simple and inexpensive configuration using the drop prevention belt, and also reliably prevents the occurrence of problems such as the fall prevention belt being caught by the treatment element. There is an effect that can be.

  Hereinafter, the present invention will be described based on embodiments shown in the accompanying drawings. 1 and 2 schematically show an example of a chair type massage machine according to an embodiment of the present invention. The chair type massage machine of this example has a seat part 1 on which a user sits, a backrest part 2 disposed behind the seat part 1 so that the user can lean, and a user holds both legs. Therefore, the ottoman 3 disposed in front of the seat portion 1 and the pair of armrest portions 4 disposed on both the left and right sides of the seat portion 1 for the user to place both elbows constitute a main body. In addition, the up-down direction, the left-right direction, and the front-rear direction used in the text are directions based on the user who is seated on the seat portion 1.

  The backrest portion 2 is entirely covered with a cover 5, and a frame portion 6 having a moving space S in the center and a moving space S of the frame portion 6 are arranged in the cover 5 so as to be movable up and down. The movable block 7 is provided. The moving space S is a space that opens forward in the cover 5, and the treatment element 20 that protrudes from the movable block 7 protrudes forward from the opening surface of the moving space S and comes into sliding contact with the inner surface of the cover 5. By applying stimulation to the user via 5, various massages such as massage, rubbing, and hitting are performed.

  FIG. 3 shows the entire movable block 7. The movable block 7 is rotatably incorporated with a vertical drive shaft 8 having a horizontal direction as an axial direction, and gear-shaped vertical pinions 9 provided at both left and right ends of the vertical drive shaft 8 are arranged on the left and right sides of the frame portion 6. A worm shaft (which is engaged with a rack of a guide rail (not shown) mounted so that the vertical direction is the axial direction on both sides and is press-fitted into the output shaft of the vertical motor 10 mounted in the movable block 7) (Not shown) transmits the rotation to a worm wheel (not shown) press-fitted to the vertical drive shaft 8 so that the vertical drive shaft 8 and the upper and lower pinions 9 rotate integrally in the forward and reverse directions. The entire movable block 7 is moved up and down along the rack. Note that reference numeral 11 in the drawing denotes guide rollers that are installed at four positions on the movable block 7 in the vertical and horizontal directions and guide the vertical movement of the movable block 7 along the guide rail.

  The movable block 7 includes a pair of left and right support arms 12 formed by connecting the base ends of the upper arm 12a and the lower arm 12b in a side-view shape, and is provided at the distal ends of the upper and lower arms 12a and 12b of each support arm 12. Each has a roller-type treatment element 20 rotatably. That is, the movable block 7 has a structure in which the treatment elements 20 are provided at four locations on the top, bottom, left and right. In this example, the distance between the left and right support arms 12 in the left-right direction is changed to change the left and right positions of the treatment elements 20 and the posture of each support arm 12 is changed. Each treatment element 20 is provided with a strong and weak drive mechanism that makes the amount of protrusion to the front of each treatment element 20 variable, and by combining these mechanisms with the vertical drive mechanism including the vertical drive shaft 8 and the vertical motor 10 described above. It is a structure that can draw a three-dimensional trajectory.

  Next, the configuration of the drop prevention belt 13 which is a characteristic configuration of this example and the guide portion 14 installed on the front surface of the movable block 7 so as to be inserted will be described in detail. The drop-preventing belt 13 is an elongated belt whose longitudinal direction is the longitudinal direction. The upper end portion 13a and the lower end portion 13b are fixed to the frame portion 6 with screws or the like in a state where a predetermined tension is applied in the vertical direction. However, a predetermined tension may be applied in the vertical direction by fixing one of the upper end portion 13a and the lower end portion 13b and connecting the other to the frame portion 6 via a tension spring.

  The drop prevention belt 13 is stretched so as to straddle the front of the movable block 7 in the vertical direction at the center position in the left and right direction of the opening surface of the moving space S, and is intermediate between the support arms 12 paired on the left and right sides. The portion is formed to have a width that passes vertically without contacting the support arm 12 and the treatment element 20 supported by the support arm 12.

  The guide portion 14 is formed on the front plate 15 that vertically connects the central portions in the left-right direction on the front side of the upper and lower end portions of the movable block 7. In this example, only a pair of upper and lower portions are provided through the front plate 15. The guide portion 14 is formed by the slit-shaped insertion hole 16 to be formed. The insertion hole 16 has a length in the left-right direction that is slightly larger than the width in the left-right direction of the drop prevention belt 13 and penetrates in the front-rear direction. As shown in FIG. The drop-preventing belt 13 located at the front is inserted into the pair of upper and lower insertion holes 16, and a part of the drop-preventing belt 13 is provided so as to hang behind the front plate 15 at a portion sandwiched between the two insertion holes 16. In this way, the position of the drop prevention belt 13 in the left-right direction is constrained to the center position in the left-right direction of the opening surface of the moving space S.

  That is, the fall prevention belt 13 has its upper end portion 13a and lower end portion 13b constrained in the left-right direction by the connection with the frame portion 6, and in addition, is vertically inserted through the insertion hole 16 of the guide portion 14. Since the position in the left-right direction is also constrained at the intermediate portion, it does not shift to one side in the left-right direction, and therefore, the situation where the drop prevention belt 13 is caught by each treatment element 20 and a problem occurs is prevented. Is. In particular, as described above, the guide portion 14, that is, the insertion hole 16 is formed on the front side of the movable block 7 and an intermediate portion sandwiched between the pair of left and right support arms 12. The right and left displacement is effectively prevented at the portion that may come into contact with the child 20.

  Next, another chair type massage machine in the embodiment of the present invention will be described. In the configuration of this example, the configuration other than the guide portion 14 is the same as the configuration of the above-described example. Therefore, the same configuration as the example is denoted by the same reference numeral, and detailed description thereof is omitted. Only detailed below.

  As shown in FIGS. 5 to 8, the guide portion 14 of this example is a ring-shaped member having an insertion hole 16 penetrating in the vertical direction in the center, and the guide portion 14 having this ring shape is formed on the front surface of the front plate 15. In this structure, the fall prevention belt 13 is inserted into the insertion hole 16 in the vertical direction while being fixed, thereby effectively preventing the lateral fall of the fall prevention belt 13. Since the insertion hole 16 penetrates in the vertical direction, the drop prevention belt 13 slides smoothly in the insertion hole 16.

  In addition, the cylindrical guide portion 14 has a structure that protrudes forward from the front plate 15 disposed between the support arms 12 that are paired on the left and right sides. It also functions as a danger prevention stopper that prevents the head and neck of the patient from excessively entering between the left and right treatment elements 20 (see FIG. 7). Here, as described above, the support arms 12 are each provided with the treatment elements 20 on the upper and lower sides, and therefore, there are two pairs of left and right treatment elements 20 on the upper and lower sides. In consideration of the function as the stopper, it is preferable to install the portion between the pair of treatment elements 20 having a larger interval in the locus of the massage operation in the upper and lower sets. This installation location is not limited to the number and arrangement of the treatment elements 20 in this example, and in any case, the guide portion 14 is projected at a position where the distance between the treatment elements 20 forming the pair is the largest. It is preferable to improve the safety by using the guide portion 14 as a stopper.

  Moreover, as shown in FIG. 9, the insertion hole 16 of the guide part 14 is located behind the position of the drop prevention belt 13 (imaginary line in the figure) when it is stretched in a straight line without passing through the guide part 14. Provide to do. As a result, the drop prevention belt 13 is always pulled rearward regardless of the vertical position of the movable block 7. Therefore, the drop prevention belt 13 is always given a constant tension to prevent the drop. This function will be fully demonstrated.

  FIG. 10 shows a modification of the cylindrical guide portion 14. The guide portion 14 shown in FIG. 10A has an inner surface in sliding contact with the drop-preventing belt 13 of the insertion hole 16 penetrating in the vertical direction, that is, a portion positioned on the front side of the inner side surface of the insertion hole 16. Is formed in a cross-sectional arc shape that swells toward the rear side as it approaches, so that the slidable contact portion of the insertion hole 16 with the dent prevention belt 13 is stretched rearward and stretched. It is formed so as to be along the curve. By forming the insertion hole 16 in the above-mentioned circular arc shape in advance, the drop prevention belt 13 and the guide part 14 are smoothly slidably contacted with each other by wide surface contact, and wear of both the parts 13 and 14 is reduced. It is also possible to prevent problems such as the falling prevention belt 13 being caught by the edges of the upper and lower opening edges of the insertion hole 16 of the guide portion 14 to generate abnormal noise and the falling prevention belt 13 being damaged.

  Although not shown, the outer surface of the guide portion 14 that is in sliding contact with the cover 5, that is, the portion located on the front side of the outer surface of the cylindrical guide portion 14 swells toward the front side as it approaches the vertical center. It is also preferable to form such a cross-sectional arc shape. In this case, the catch and wear between the cover 5 and the guide part 14 are reduced, and the feeling of contact when the user contacts the guide part 14 via the cover 5 is also eased.

  In the modification shown in FIG. 10B, the sliding contact portion of the guide portion 14 with the drop-preventing belt 13, that is, the portion located on the front side of the side peripheral portion surrounding the insertion hole 16 is rotatable with the roller 17. It is the structure formed by. The roller 17 is configured to be rotatable around a columnar support shaft 18 whose axial direction is the left-right direction. When the movable block 7 moves up and down, the roller 17 rotates to drop. In addition to reducing wear with the prevention belt 13, problems such as generation of abnormal noise and breakage of the drop prevention belt 13 are also prevented. In addition, when the roller 17 comes into contact with the user via the cover 5 and gives a stimulus, further diversification of massage (such as stretching the back) can be obtained.

  The configuration of the drop-preventing belt 13 and the guide portion 14 described above is not limited to the illustrated chair type massage machine, and is formed by opening forward in the cover 5 of the backrest portion 2. A movable block 7 having at least a pair of left and right treatment elements 20 is arranged in the movement space S so as to be movable up and down, and each treatment element 20 is projected forward from the opening surface of the movement space S to be massaged. Of course, the same configuration can be applied to any chair type massage machine.

It is a schematic front view of the chair type massage machine of an example in the embodiment of the present invention. It is a schematic side view of a chair type massage machine same as the above. It is a perspective view of the movable block incorporated in the chair type massage machine same as the above. It is sectional drawing explaining a mode that a fall prevention belt is hooked in the penetration hole of a movable block same as the above. It is a perspective view of the movable block incorporated in the chair type massage machine of the other example in embodiment of this invention. It is a front view of a movable block same as the above. It is a top view of a movable block same as the above. It is a side view of a movable block same as the above. It is a side view explaining a mode that a movable block same as the above pulls a fall prevention belt. (A), (b) is side surface sectional drawing explaining the modification of the guide part of a movable block same as the above.

Explanation of symbols

2 Backrest part 5 Cover 7 Movable block 13 Drop prevention belt 14 Guide part 16 Insertion hole 17 Roller 20 Treatment element S Movement space

Claims (4)

This is a chair type massage machine in which a movable block having two pairs of left and right treatment elements vertically is arranged in a movable space formed by opening forward in the cover of the backrest part. A drop-preventing belt stretched in the vertical direction so as to straddle the front of the movable block in the moving space, and a drop-preventing belt that is installed so as to protrude forward from the movable block. A guide portion that has a through-hole inserted therethrough in the vertical direction, and the guide portion is installed between the pair of treatment elements whose distance in the trajectory of the massage operation is larger among the upper and lower sets, A chair-type massage machine that is also used as a stopper for preventing a user from excessively entering between left and right treatment elements. The fall prevention belt having the upper end portion and the lower end portion connected to the frame portion of the backrest portion is inserted into the insertion hole of the guide portion, thereby being pulled rearward. The listed chair type massage machine. The chair-type massage machine according to claim 2, wherein an inner surface of the insertion hole in the guide portion that is in sliding contact with the drop-preventing belt is formed in a cross-sectional arc shape along a curve of the drop-preventing belt that is pulled rearward. . The chair type massage machine according to claim 2, wherein a rotatable roller is provided in a sliding contact portion of the guide portion with the drop-preventing belt.

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