JP2018114019A - Chair type massage machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow massaging in a relaxing posture that the body is stretched in a horizontal direction or massaging for a well-build user in a chair type massage machine which can be stored by lowering a backrest part.SOLUTION: A chair type massage machine 1 has a seat part 2, a backrest part 3 which is disposed at the back of the seat part 2 and provided in the way that it can support a user's back part, and a massage part which is incorporated into the backrest part 3 and performs massage operation of the user seated on the seat part 2. The chair type massage machine 1 is provided with backward extension means 7 which, with the seat part 2 as reference, extends the backrest part 3 backward.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a chair type massage machine capable of changing dimensions in the height direction of a user.

Conventionally, in a chair type massage machine, a massage part that massages the back part of a user seated on a seat part is built in the back part, and the height of the back part can be lowered and stored. There is what is called a “mini sofa type”.
Such a “mini sofa type” chair type massage machine with a low backrest part has a high design and tends to be favored by consumers, but the height of the backrest part can be suppressed compared to a general chair type massage machine. Therefore, there are many restrictions on the function of the backrest, and there is a possibility that the massage desired by the user cannot be performed.

  For example, Patent Document 1 discloses a “mini sofa-type” chair-type massage machine that allows the upper limbs to be massaged on a user's shoulder or the like seated on the seat by vertically projecting the backrest portion upward. Has been. If the backrest part can be moved upward in this way, even if the user remains seated on the seat part, the treatment part such as the shoulder can be fully massaged with the backrest part moved upward. .

JP 2013-208264 A

  However, the chair-type massage machine of Patent Document 1 can hardly change the length in the front-rear direction even if the height can be adjusted to some extent by causing the backrest portion to protrude upward. That is, since the chair type massage machine of patent document 1 does not have sufficient length in the front-rear direction, the user seated on the seat cannot take the posture of tilting the upper body back or extending the legs. . In other words, the chair type massage machine of Patent Document 1 has not been designed to receive a massage by relaxing the body in the horizontal direction.

  When a large user tries to receive a massage, it is necessary to ensure a sufficient length in the height direction of the user. However, in the chair type massage machine of Patent Document 1, since the length in the front-rear direction can hardly be changed, the massage part cannot be extended to the treatment part located at the end in the height direction such as the back part or the lower limbs, and the physique is used greatly. There was a possibility that the patient could not perform sufficient massage.

  The present invention has been made in view of the above-mentioned problems, and is capable of storing a backrest portion with a lowered height, but has a large massage and a large physique in a relaxed posture with the body stretched horizontally. It aims at providing the chair type massage machine which can also perform massage to.

In order to solve the above problems, the chair type massage machine of the present invention takes the following technical means.
That is, the chair type massage machine of the present invention is a seat, a backrest that is provided at the rear of the seat and is provided so as to support the back of the user, and is built in the backrest and is seated on the seat A chair-type massage machine having a massage part that performs a massage operation on a user, comprising a rear extension means for extending the backrest part backward with respect to the seat part. Features.

Preferably, the front portion of the seat portion is provided with a footrest portion for massaging the user's lower limb, and includes a front extension means for extending the footrest portion forward with respect to the seat portion. It is good to have.
Preferably, the length from the backrest portion to the footrest portion can be extended toward both the front and rear with the seat portion as a boundary by the rearward extension means and / or the forward extension means. .

Preferably, the rear extending means is a long groove provided on the seat portion side in the vertical direction, and a guide body that is provided in the backrest portion and is fitted in the long groove and guided along the long groove. It is preferable that the upper side of the long groove bends backward.
Preferably, the long groove includes a lower groove extending in the vertical direction, and an upper groove formed to be connected to the upper side of the lower groove and to be more inclined to the rear than the lower groove, When the guide body is located in the lower groove, the rear extending means is in a housed state in which the lower side of the backrest part is housed below the seat part, and the guide body is located at a boundary between the lower groove and the upper groove. In addition, when the lower portion of the backrest portion protrudes upward and the guide body is located in the upper groove, the backrest portion moved to the protruding position reclines rearward and extends rearwardly. It is good to be the composition which becomes.

Preferably, the backward extending means is a guide provided in the backrest portion by rotating the rack portion provided inside or along the long groove and being engaged with the rack portion. And a pinion gear for moving the body along the long groove.
Preferably, the footrest part can be accommodated below the seat part, and between the seat part and the footrest part, a footrest that pulls the footrest part forward from the lower side of the seat part. Advancement means is provided, and the footrest advancement means may be provided with additional extension means for extending the footrest part advanced by the footrest advancement means further forward.

Preferably, the additional extension means supports the footrest part, and a support body that is drawn forward by the footrest advancement means, and the footrest part is swingable in the front-rear direction with respect to the support body. And a link mechanism to be connected.
Preferably, the footrest portion includes a lower limb insertion portion that allows insertion of the user's lower limb on the front surface, and a lower limb placement portion that enables placement of the user's lower limb on the rear surface. The posture can be changed to both a massage posture in which the lower limb insertion portion is directed upward and a rest posture in which the lower limb placement portion is directed upward by rotating around an axis directed in the left-right direction. It is good to be said.

  According to the chair type massage machine of the present invention, the backrest part can be stored with the height lowered, and a massage with a relaxed posture with the legs extended and a massage for a user with a large physique can be reliably performed. it can.

It is the perspective view which showed the chair type massage machine of this embodiment. It is the side view which showed the internal structure of the chair type massage machine of this embodiment by which the backrest part was made into the accommodation state. It is the side view which showed the internal structure of the chair type massage machine of this embodiment by which the backrest part was made into the protrusion state. It is the side view which showed the internal structure of the chair type massage machine of this embodiment by which the backrest part was made into the reclining state. It is the figure which showed the back extension means in the chair type massage machine of this embodiment. It is the figure which expanded and showed the back extension means of this embodiment. It is the figure which showed the chair type massage machine of the state which extended the footrest part ahead by the front extension means (the additional extension means is not used). It is the figure which showed the chair type massage machine of the state which extended the footrest part ahead using the additional extension means in the state which extended the footrest part ahead by the front extension means.

Below, embodiment of the chair type massage machine 1 of this invention is described based on a figure.
In addition, FIGS. 1-8 shows the chair type massage machine 1 which concerns on this embodiment.
As shown in FIG. 1, the chair-type massage machine 1 of the present invention includes a seat 2 on which a user can be seated, and massages the user seated on the seat 2. . Specifically, a backrest part 3 is provided behind the seat part 2, and a massage part built in the backrest part 3 is used against the back part of the user leaning against the backrest part 3. It is intended to perform a massage operation.

  The chair type massage machine 1 of the present embodiment is a so-called “mini sofa type”. That is, when the back portion is not massaged, the backrest portion 3 can be accommodated downward so that the upper end of the backrest portion 3 is substantially the same height as the upper surface of the armrest portion 5. The appearance of the chair type massage machine 1 at this time is similar to, for example, a sofa or a seat chair, which is why the chair type massage machine 1 of the present embodiment is called a “mini sofa type”.

Moreover, in the attitude | position shown by FIG. 1, the chair type massage machine 1 of this embodiment has the footrest part 6 which massages a user's leg by the front part of the seat part 2. FIG. The chair-type massage machine 1 in FIG. 1 is used when a lower limb massage is performed, and the footrest portion 6 described above can be stored below the seat portion 2 when the lower limb massage is not performed.
In the following drawings, in order to facilitate the explanation of the internal structure of the chair-type massage machine 1, in the drawings, the arrangement positions of the members and part of the structure are omitted or partially rendered transparent. There is a case.

For example, in FIG. 1, the backrest portion 3 is shown so that the frame structure provided inside the backrest portion 3 can be visually recognized. Usually, a member such as a cover is provided on the front surface of the backrest portion 3. The frame structure is not visible. That is, in FIG. 1, the cover is omitted and the frame structure is made visible.
2 to 5, 7, and 8, not only the cover provided on the backrest 3 but also the left and right armrests 5 are omitted, and the chair-type massage machine 1 of the present invention is characterized. The rear extending means 7 and the front extending means 8 are visible from the side.

Furthermore, in the following description, the left-right direction in FIG. 2 is referred to as the front-rear direction in the actual apparatus, and the up-down direction in FIG. 2 is referred to as the up-down direction in the actual apparatus. The paper surface penetration direction in FIG. 2 is referred to as a horizontal direction or a width direction in an actual apparatus. These directions coincide with the directions seen from the user seated on the seat 2, and are indicated by arrows in the representative drawings.
Next, the seat part 2, the backrest part 3, the massage part, and the footrest part 6 which comprise the chair type massage machine 1 of this embodiment are demonstrated.

  The seat portion 2 is a portion formed in the center of the chair type massage machine 1 in the front-rear direction and the left-right direction, and is a portion on which a user who wants to receive a massage sits. The upper surface of the seat portion 2 is formed in a flat surface shape that is wide enough to support the user's buttocks from below, and is formed using a cushioning material or the like to enhance the user's sitting comfort. Has been. A lower part of the seat 2 is provided with a foundation frame 9 that supports the seat 2 with the upper surface facing substantially horizontal above the floor F.

As shown in FIGS. 2 to 4, the base frame 9 is formed by combining a plurality of bar-shaped members such as metal pipe members and angle members in the vertical direction, the horizontal direction, and the front-rear direction. The base frame 9 is formed so as to have an outer shape, and can support the seat 2 so as to be positioned at a predetermined height from the floor surface F.
The base frame 9 described above is hollow on the lower side, and a space capable of accommodating the above-described footrest portion 6 is formed between the seat portion 2 and the floor surface F in the vertical direction. That is, the chair type massage machine 1 of the present embodiment can be accommodated in a state in which the footrest portion 6 is drawn into the inside (lower side) of the seat portion 2 when the lower limbs of the user are not massaged.

  The backrest 3 is a member that has a sufficient area to support the user's back over a wide range from the waist to the shoulder and is substantially rectangular in front view, and is provided with a cushion material inside. ing. This backrest part 3 can be extended rearward (extendable) with reference to the seat part 2 using a rearward extension means 7 to be described later. In other words, the backrest part 3 is reclined. The user can be massaged with posture.

  Inside the backrest 3, the backrest frame 10 that can support the weight applied from the back of the user and the treatment portion of the back of the user seated on the seat 2, such as stagnation, striking, vibration, etc. And a massage part for performing a massage operation. In this massage part, for example, a back massage device disclosed in Japanese Patent Application Laid-Open No. 2012-165852 (using a rotational driving force generated by an electric motor, operations such as squeezing, hitting or vibrating the treatment part, Alternatively, an apparatus capable of moving up and down with respect to the back frame 10 is used.

  The backrest frame 10 is a frame that can sufficiently support the user's back, and is a combination of a plurality of rod-like members in a substantially rectangular shape in plan view. It is possible to support from. This backrest frame 10 has a structure in which the upper and lower ends of a pair of left and right vertical frames 10a extending in the vertical direction are connected by a pair of upper and lower horizontal frames 10b extending in the left and right direction. It is formed in a long rectangular shape (substantially B shape). A sub frame 10c is provided in front of the pair of left and right vertical frames 10a so as to be parallel to the vertical frame 10a. A side frame 11 is provided below the vertical frame 10a and the sub frame 10c so as to project outward in the width direction. The side frame 11 is provided so as to protrude leftward with respect to the left vertical frame 10a and to extend rightward with respect to the right vertical frame 10a. A rear extension means 7 to be described later is attached.

  On the other hand, the footrest part 6 is a member capable of treating the user's lower limbs (lower limbs below the knees) and can be accommodated below the seat part 2 described above. The footrest portion 6 is a member having a substantially rectangular shape when viewed from the front and a triangular shape when viewed from the side. If it is the state of FIG. 1, the lower leg insertion part 12 (recessed part) which can insert a lower leg from a user's knee on the front surface of the footrest part 6 opens left and right toward the front upper side. It is formed to do. A user's lower limb can be inserted into the lower limb insertion portion 12 from the front.

A foot massage mechanism (not shown) for massaging the user's lower limb inserted into the lower limb insertion portion 12 is provided inside the footrest portion 6. In addition, a rolling element 13 that rolls on the floor F and assists the smooth movement of the footrest 6 when extending in the front-rear direction by the front extending means 8 is provided below the footrest 6. It has been.
In addition, as shown in FIG. 1, the armrest part 5 which mounts the elbow of the user who seated on the seat part 2 is arrange | positioned at the right-and-left both sides of the seat part 2 mentioned above. The armrest portion 5 is a plate-like member arranged to stand up and down, and the upper surface is formed substantially horizontally so that the elbow can be easily placed. In addition, since this armrest part 5 is not a member largely related to the feature of the present invention, it will be omitted from FIG.

  By the way, the chair type massage machine 1 of the present invention is characterized by including a rear extending means 7 for projecting the backrest part 3 described above with the seat part 2 as a reference and extending backward. is there. Moreover, the chair type massage machine 1 of the present invention includes not only the rear extending means 7 but also the front extending means 8 for extending the footrest part 6 forward based on the seat part 2. If these rear extension means 7 and / or front extension means 8 are provided, the length from the backrest part 3 to the footrest part 6 can be extended in the front-rear direction with the seat part 2 as a boundary. Users with various physiques can be massaged in a relaxed posture with their legs extended.

Hereinafter, among the rear extension means 7 and the front extension means 8 which are the features of the chair type massage machine 1 of the present invention, the rear extension means 7 will be described first.
As shown in FIG. 5, the rear extending means 7 has a long groove 14 provided on the seat portion 2 side and a guide body 15 (detailed configuration will be described later) provided on the backrest portion 3 side. The backrest 3 is guided along the forming direction. The backrest portion 3 can be extended rearward with respect to the seat portion 2 by the long groove 14 provided in the rear extending means 7.

  As shown in FIG. 6, the long groove 14 is a groove formed along the vertical direction on the guide plate 16 formed in the base frame 9, and has a groove width that allows the guide body 15 to be fitted. Yes. From the lower side of the long groove 14 to the midway side in the vertical direction, the long groove 14 is formed in a straight line along a substantially vertical direction (vertical direction). Further, the upper side of the long groove 14 is curved rearward as compared with the lower side of the long groove 14 formed along the vertical direction. That is, the upper long groove 14U is tilted along the horizontal direction.

  Therefore, when the guide body 15 is moved along the long groove 14, when the guide body 15 is positioned in the lower long groove 14 </ b> D, the guide body 15 is exclusively guided in the up and down direction, and hardly moves in the front and rear direction. Absent. However, when the guide body 15 is positioned in the upper long groove 14U, the guide body 15 is guided only along the horizontal direction, and the position of the backrest portion 3 moves rearward with respect to the seat portion 2 as a reference. On the other hand, it becomes possible to extend the backrest part 3 mentioned above toward back.

  Specifically, the above-described long groove 14 is formed in the guide plate 16 provided on the side portion on the rear end side of the base frame 9. The guide plate 16 is a rectangular strip, and is formed in a substantially square shape by bending upward about 1/4 along the longitudinal direction. That is, the guide plate 16 is attached to the base frame 9 so as to be along the vertical direction from the lower end portion to the bent portion and to be inclined from the bent portion to the upper end portion.

The guide plates 16 are respectively provided on the left side and the right side of the foundation frame 9, and the left and right guide plates 16 penetrate the guide plates 16 in the left and right directions and extend in the vertical direction as described above. 14 is formed. A guide body 15 provided on the side portion of the backrest portion 3 is fitted into the long groove 14.
The guide body 15 is a member formed on the side portion of the backrest portion 3, that is, the side frame 11 of the backrest portion 3, and is guided along the forming direction of the long groove 14 while being fitted in the long groove 14. The backrest part 3 can be guided in the vertical direction and the front-rear direction with respect to the seat part 2. The guide body 15 includes an upper guide body 17 disposed on the upper side of the side frame 11 and a lower guide body 18 disposed on the side frame 11 at a position away from the lower side of the upper guide body 17. . That is, the guide body 15 is configured to engage with the long groove 14 at two locations, upper and lower, and to raise and lower the backrest 3.

  Specifically, each of the upper guide body 17 and the lower guide body 18 is a member formed by combining two cylindrical bodies having substantially the same diameter in the width direction (left-right direction) so as to be coaxial. Both of these two cylindrical bodies have a diameter larger than the groove width (opening width) of the long groove 14 described above, and are arranged separately on one side and the other side of the opening of the long groove 14, thereby 14 can be engaged so as to be sandwiched from the left and right. If such a guide body 15 is provided, the guide body 15 is prevented from coming off (detaching) from the long groove 14 in the left-right direction. On the other hand, the guide body 15 is movable in the vertical direction with respect to the long groove 14, and the backrest 3 can be moved along the direction in which the long groove 14 is formed.

As shown in FIGS. 5 and 6, the above-described upper guide body 17 is attached to the tip of the first shaft 19 arranged with the axial center in the left-right direction, and the lower guide body 18 is connected to the first shaft 19. Similarly, it attaches to the front-end | tip of the 2nd shaft 20 arrange | positioned with the axial center facing the left-right direction.
The first shaft 19 is a rod-shaped member that protrudes outward in the width direction from the side surface of the side frame 11, and is formed in a rod shape having a diameter smaller than the opening width of the long groove 14 described above. Specifically, the first shaft 19 includes a left shaft that protrudes leftward from the side surface of the left side frame 11 and a right shaft that protrudes rightward from the side surface of the right side frame 11. There are two. The above-described upper guide body 17 is attached to the distal ends of the left and right first shafts 19, and the upper guide body 17 is fitted in the left and right long grooves 14 so as to be movable in the vertical direction.

  The second shaft 20 is a rod-like member that penetrates from the left end to the right end of the backrest frame 10 in the left-right direction, and is disposed on the backrest frame 10 so as to be rotatable about an axis that faces the left-right direction. Similar to the first shaft 19, the guide body 15 is provided at both left and right ends of the second shaft 20, and the lower guide body 18 is also fitted to each of the left and right long grooves 14 so as to be movable in the vertical direction. .

  On the other hand, the rear extending means 7 described above has a lifting mechanism 21 that lifts and lowers the backrest 3 with respect to the seat 2. The elevating mechanism 21 is rotationally driven in a state of being engaged with the rack portion 22 and the rack portion 22 provided corresponding to the long groove 14 (along the long groove 14 in the present embodiment), thereby the backrest portion 3. And a pinion gear 23 that moves the guide body 15 provided along the long groove 14. A rotational driving force is transmitted to the pinion gear 23 by an elevating motor 24 located on the lower left side of the backrest frame 10.

Specifically, the lifting motor 24 described above is arranged so that the axis of the drive shaft is directed in the vertical direction, and the rotational driving force generated in the drive shaft is transmitted to the second shaft 20 via the worm gear. Thus, the second shaft 20 can be driven to rotate about an axis that faces in the left-right direction.
The pinion gear 23 is a gear (flat gear) provided on the second shaft 20 located on the inner side in the width direction than the guide body 15 described above, and can rotate integrally with the second shaft 20.

  The rack portion 22 can mesh with the pinion gear 23 and is attached to the above-described guide plate 16 along the vertical direction so that the tooth tip thereof is directed rearward. Specifically, the rack portion 22 is attached to the guide plate 16 along the opening edge (front opening edge) of the long groove 14 described above, and the pinion gear 23 is engaged from the front.

  Therefore, when the second shaft 20 is driven to rotate using the above-described lifting motor 24, the pinion gear 23 attached integrally to the second shaft 20 also rotates. Then, the pinion gear 23 moves up and down while meshing with the rack portion 22, and the backrest portion 3 provided with the pinion gear 23 moves up and down relative to the seat portion 2 (base frame 9) provided with the rack portion 22. It becomes like this.

  Further, a guide body 15 in the long groove 14 is provided on a surface of the guide plate 16 facing outward in the width direction (a surface facing the left side if it is the left guide plate 16 and a surface facing the right side if the right guide plate 16). A positioning sensor 25 for detecting the position of is provided. The positioning sensor 25 is provided at each of the upper groove end and the lower groove end of the long groove 14, and the guide body 15 has reached the groove end of the long groove 14, in other words, the state of the backrest 3 will be described later. It is possible to detect whether the state is “state”, “projection state”, or “reclining state”.

When the backrest 3 is extended rearward using the rearward extension means 7 described above, the operation may be performed in the following procedure.
As described above, in the chair type massage machine 1 according to the present invention, when the back portion is not massaged, the backrest portion 3 is set so that the upper end of the backrest portion 3 is substantially the same height as the upper surface of the armrest portion 5. Is housed at a reduced height. The state (posture) of the backrest 3 accommodated in a state where the height is lowered is called “accommodating state (accommodating posture)” and is as shown in FIG.

  That is, as shown in FIG. 2, in the chair type massage machine 1 in the “accommodating state”, the backrest part 3 is lowered so that the lower end of the backrest part 3 is located slightly above the floor surface F. The upper end of the backrest 3 is substantially the same height as the upper surface of the armrest 5. In this “accommodated state”, the lower half of the backrest 3 is located below the seat 2 where the user is seated, so that the user's back can be satisfactorily treated with the massage part built in the backrest 3. I can't do it. That is, in the “accommodating state”, the backrest 3 is accommodated so as not to get in the way without performing massage on the back.

Therefore, when performing massage to the back using the chair-type massage machine 1, the backrest 3 in the “accommodating state” position is pulled up to change the state (posture) of the backrest 3 to “accommodating state”. It is necessary to change from “(accommodating posture)” to “projecting state (projecting posture)”.
That is, the above-described lifting motor 24 is rotationally driven, and the rotational driving force of the lifting motor 24 is transmitted to the second shaft 20. Then, the pinion gear 23 integrally attached to the second shaft 20 also rotates, the pinion gear 23 meshes with the rack portion 22 provided on the guide plate 16 (the base frame 9 of the seat portion 2), and the backrest portion 3 becomes the seat portion. 2 starts moving upward.

  Specifically, the guide body 15 is movable in the vertical direction with respect to the above-described long groove 14 in a state in which the guide body 15 is prevented from coming off in the left-right direction. Can be made. Since the long groove 14 is formed in a substantially linear shape from the lower side to the bent part (about 3/4 from the lower end) along the vertical direction, the guide body 15 is guided linearly in the vertical direction. . For this reason, from the “accommodating state” to the “projecting state”, the backrest 3 hardly moves in the front-rear direction even if it moves in the vertical direction.

Eventually, when the guide body 15 reaches the bent portion (curved portion) of the long groove 14, the posture of the backrest 3 becomes a “protruding state (protruding posture)”.
As shown in FIG. 3, in the chair type massage machine 1 in the “protruding state (protruding posture)”, the lower end of the backrest portion 3 is substantially the same height as the upper surface of the seat portion 2, The entire range of the backrest 3 along the upper side is positioned above the seat 2 where the user is seated. Therefore, a user's back part can fully be treated with the massage part incorporated in the backrest part 3. FIG.

In addition, since this "protruding state" massages the back part of the user who sits on the seat part 2 in the state where the upper body is raised, the user has relaxed posture (reclined) with his upper body tilted backwards. It is not possible to perform treatment with (posture).
In other words, when the treatment is performed in a relaxed state in which the upper body is tilted backward, it is necessary to further change the chair type massage machine 1 in the “protruding state (protruding posture)” to the “reclining state (reclining posture)”. There is.

Therefore, in the chair type massage machine 1 of the present embodiment, the posture of the backrest 3 is changed from the “projecting state” to the “reclining state” using the rear extending means 7.
That is, when the elevating motor 24 is continuously driven to rotate, the pinion gear 23 rotates and the pinion gear 23 meshes with the rack portion 22 provided on the guide plate 16 (the base frame 9 of the seat portion 2), and the guide body 15 is bent. Move upward from the location.

  The lower long groove 14D described above is formed in a straight line along the vertical direction, while the upper long groove 14U is inclined rearward. Therefore, when the upper guide body 17 is moved further upward (rearward) along the long groove 14 than the bent portion, the lower guide body 18 exists on the lower long groove 14D formed linearly in the vertical direction. However, the upper guide body 17 moves rearward along the upper long groove 14U inclined rearward, and the upper side of the backrest portion 3 swings rearward around the lower side, so that the posture of the backrest portion 3 is increased. Changes to a reclining back. That is, when the posture of the backrest portion 3 is changed from the “projecting state” to the “reclining state”, the backrest portion 3 moves exclusively toward the rear without changing the position in the vertical direction.

Eventually, when the upper guide body 17 reaches the upper end (rear end) of the long groove 14, it is detected by the positioning sensor 25 described above that the posture of the backrest portion 3 is in the “reclining state (reclining posture)”.
As shown in FIG. 4, in the chair type massage machine 1 in the “reclining state (reclining posture)”, since the backrest part 3 is inclined toward the rear, the user moves the upper body backward. You can lie down and lie down and receive treatment in a relaxed state.

  From the above, in the chair type massage machine 1 provided with the above-described backward extending means 7, not only the height of the backrest portion 3 is protruded upward but the height of the backrest portion 3 is changed. The length along the front-back direction of the chair type massage machine 1 can be extended by extending backward. Therefore, in the chair type massage machine 1 of the present embodiment, a sufficient length is ensured in the front-rear direction, and the user is treated in a relaxed state such as a posture in which the upper body is tilted backwards and laid down. be able to.

Moreover, in the chair type massage machine 1 of this embodiment which can ensure sufficient length in the front-back direction, especially when a large user tries to receive a massage, it is at the end in the extending direction such as the back. A massage part can be reliably made to contact the treatment part located, and it becomes possible to perform sufficient massage with respect to the user of various physiques.
Now, as shown in FIGS. 7 and 8, the chair-type massage machine 1 of the present invention is provided with a front extension means 8 that extends the footrest part 6 forward with the seat part 2 as a reference.

  The front extension means 8 includes a footrest advance means 26 that pulls the footrest part 6 forward from the lower side of the seat part 2 and an additional extension that extends the footrest part 6 advanced by the footrest advance means 26 further forward. Means 27 is provided. For example, when a user with a large physique massages his or her lower limbs using the footrest part 6, the pull-out position of the footrest part 6 is too close to the seat part 2, so that a sufficient massage cannot be received or in a cramped posture. You may not be able to receive treatment in a relaxed posture.

Even in such a case, in the chair type massage machine 1 of the present invention, the pull-out position of the footrest portion 6 can be further changed forward using the front extending means 8, so It becomes possible to perform a massage in a relaxed posture with the legs extended.
Specifically, the front extension means 8 includes a footrest advancing means 26 that is provided between the seat portion 2 and the footrest portion 6 and pulls the footrest portion 6 forward from the lower side of the seat portion 2. The front extending means 8 is provided with additional extending means 27 for extending the footrest portion 6 advanced by the footrest advancing means 26 further forward.

Next, the footrest advancement means 26 and the additional extension means 27 constituting the front extension means 8 of the present invention will be described.
The footrest advancing means 26 is a rod-shaped swinging arm member 28 that is swingably mounted around a shaft facing in the left-right direction with respect to the lower side of the seat portion 2 in the base frame 9, and the swinging arm member 28. And a footrest drive motor 29 that swings forward with respect to the base frame 9.

  The swing arm member 28 described above is a member that connects the base frame 9 and the footrest portion 6, and includes three bar shapes of the first arm member 30, the second arm member 31, and the third arm member 32 from the base frame 9 side. These members are joined in the longitudinal direction. Each of the first arm member 30 to the third arm member 32 is provided for each of the left side and the right side of the seat portion 2, and the swing arm member 28 is configured by two sets including the left and right sides.

  The first arm member 30 is a short rod-like member that is about 1/4 to 1/2 of the second arm member 31 and the third arm member 32. One end side (the base frame 9 side) of the first arm member 30 is connected to the lower side of the seat portion 2 in the base frame 9 so as to be swingable about an axis facing the left-right direction. Further, the other end side (footrest part 6 side) of the first arm member 30 is connected to one end side of the second arm member 31 so as to be swingable about an axis directed in the left-right direction.

The other end side of the first arm member 30 provided on the left side of the seat portion 2 and the other end side of the first arm member 30 provided on the right side are connected by a connecting shaft 33 that faces in the left-right direction. An actuator 34 described later is attached to the connecting shaft 33.
The second arm member 31 is a rod-shaped member having substantially the same length as the third arm member 32, and connects the first arm member 30 and the third arm member 32. One end side (base frame 9 side) of the second arm member 31 is connected to the other end side of the first arm member 30 so as to be swingable about an axis that faces in the left-right direction. Further, the other end side (footrest part 6 side) of the second arm member 31 is connected to one end side of the third arm member 32 so as to be swingable about an axis directed in the left-right direction.

  The third arm member 32 is a rod-shaped member that connects the second arm member 31 and the footrest portion 6. One end side (base frame 9 side) of the third arm member 32 is connected to the other end side (footrest part 6 side) of the second arm member 31 so as to be swingable about an axis that faces in the left-right direction. A rolling element 13 capable of rolling on the floor surface F is attached to the other end side of the third arm member 32. A support body 35 of the additional extending means 27 is disposed on the middle side of the third arm member 32 in the longitudinal direction.

  The footrest drive motor 29 is disposed on the rear side of the base frame 9 and transmits a rotational driving force to the actuator 34 described above. The actuator 34 is telescopic in the longitudinal direction (front-rear direction) using the rotational driving force generated by the footrest drive motor 29, and is connected to the base end side attached to the footrest drive motor 29. The front end side attached to the shaft 33 can be expanded and contracted in the front-rear direction.

  That is, when the footrest drive motor 29 is driven, the actuator 34 extends in the front-rear direction, and the position of the connecting shaft 33 moves forward. Then, the other end side of the first arm portion of the swing arm member 28 to which the connecting shaft 33 is attached swings forward about the one end side. Then, in conjunction with the forward swing of the first arm member 30, the second arm member 31 and the third arm member 32 move forward, and the footrest portion 6 rolls the rolling element 13 on the floor surface F. It moves forward and the footrest part 6 is pulled forward from the lower side of the seat part 2.

In addition, when pulling the footrest part 6 pulled out forward to the lower side of the seat part 2, the drive motor 29 for footrest is rotated to the opposite side to the time of pulling out. If it does so, the footrest part 6 will be drawn in to the lower side of the seat part 2 in the reverse procedure at the time of pulling out.
By the way, when a large user uses the above-described footrest advancing means 26 to pull out the footrest part 6 and massage the lower limbs, if the physique is large, the length from the user's buttocks to the lower limbs also becomes longer. It is conceivable that the advance position of the footrest part 6 is too close to the user as viewed from the user. In such a case, the treatment becomes difficult because the lower limbs cannot be inserted into the footrest part 6, or even if it can be inserted, the treatment is performed in a cramped posture, so that sufficient relaxation is achieved. It may not be obtained.

Therefore, in the forward extension means 8 of this embodiment, not only the above-described footrest advancement means 26 but also an additional extension means 27 is provided so that the advancement position of the footrest portion 6 can be further changed forward.
The additional extending means 27 supports the footrest portion 6 and also supports a support 35 that is pulled forward by the footrest advancement means 26 and a link that connects the footrest 6 to the support 35 so as to be swingable in the front-rear direction. And a mechanism 36.

The support body 35 is a long member disposed on the middle side in the longitudinal direction of the third arm member 32 of the swing arm member 28 described above. The support 35 is a member having a length about ½ of the third arm member 32, and is fixed to the other end side of the third arm member 32.
A first link member 37 that is swingable about an axis that faces in the left-right direction with respect to the support 35 is provided on the front end side in the longitudinal direction of the support 35 (front end side in FIG. 8). Further, a second link member 38 that is swingable about an axis that faces in the left-right direction with respect to the support 35 is provided on the middle side in the longitudinal direction of the support 35, similarly to the first link member 37. ing. Further, a biasing means 39 for connecting the first link member 37 and the support body 35 described above is provided on the base end side in the longitudinal direction of the support body 35 (the rear end side in FIG. 8). The urging means 39 is urged in a direction in which the first link member 37 is pulled back toward the rear, and is configured to automatically return to the state before the footrest portion 6 is extended when the lower limb is pulled out. Yes.

The link mechanism 36 includes the first link member 37 and the second link member 38 described above.
Each of the first link member 37 and the second link member 38 is a long member having the same length as the support 35 described above. These link members 37 and 38 are connected to the footrest portion 6 on the distal end side with respect to the proximal end side that is swingably connected to the support body 35. Specifically, a footrest support portion 40 is provided on the side surface of the footrest portion 6 to rotatably support the footrest portion 6 around a rotation shaft 41 that faces in the left-right direction. The distal ends of the first link member 37 and the second link member 38 described above are swingably connected to the footrest support portion 40.

That is, the first link member 37, the second link member 38, the support body 35, and the footrest support portion 40 described above have the link mechanism 36 that swings the footrest portion 6 forward relative to the third arm member 32. It is composed.
If the additional extending means 27 having such a link mechanism 36 is provided, if the footrest portion 6 is pushed forward against the urging force of the urging means 39, the link mechanism 36 swings forward. The advance position of the footrest part 6 can be moved further forward. As a result, even when a user with a large physique treats the lower limbs using the footrest part 6, the lower limbs can be inserted into the footrest part 6 without any trouble, and the treatment of the lower limbs can be performed satisfactorily. In addition, during the treatment of the lower limbs, the posture of the user does not become a cramped posture, and sufficient relaxation can be provided to the user.

  Moreover, when the state of FIG. 1 is used as a reference, the footrest portion 6 includes a lower limb insertion portion 12 (concave portion) into which a lower leg can be inserted from the user's knee. On the other hand, the footrest portion 6 includes a lower limb placement portion 42 that allows a user's lower limb to be placed on a rear surface (back surface) opposite to the front surface (front surface) on which the lower limb insertion portion 12 is provided. Yes. As described above, the side surface of the footrest portion 6 is provided with the footrest support portion 40 that rotatably supports the footrest portion 6 around the rotation shaft 41 facing in the left-right direction. By rotating around the rotation axis 41, the footrest part moves the lower limb insertion part 12 upward (user side) and the massage posture (posture shown in FIGS. 7 and 8), and the lower limb placement part 42. The posture of the footrest unit 6 can be changed to both the upward rest posture (posture indicated by a virtual line in FIG. 8).

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. In particular, in the embodiment disclosed this time, matters that are not explicitly disclosed, for example, operating conditions and operating conditions, various parameters, dimensions, weights, volumes, and the like of a component deviate from a range that a person skilled in the art normally performs. Instead, values that can be easily assumed by those skilled in the art are employed.

DESCRIPTION OF SYMBOLS 1 Chair type massage machine 2 Seat part 3 Backrest part 4 Massage part 5 Armrest part 6 Footrest part 7 Back extension means 8 Forward extension means 9 Base frame 10 Backrest frame 10a Vertical frame 10b Horizontal frame 10c Subframe 11 Side frame 12 Lower limb insertion part (recess)
DESCRIPTION OF SYMBOLS 13 Rolling body 14 Long groove 15 Guide body 16 Guide plate 14U Upper long groove 14D Lower long groove 17 Upper guide body 18 Lower guide body 19 1st shaft 20 2nd shaft 21 Lifting mechanism 22 Rack part 23 Pinion gear 24 Lifting motor 25 Positioning sensor 26 Footrest advancement means 27 Additional extension means 28 Oscillating arm member 29 Footrest drive motor 30 First arm member 31 Second arm member 32 Third arm member 33 Connection shaft 34 Actuator 35 Support 36 Link mechanism 37 First link member 38 Second link member 39 Biasing means 40 Footrest support portion 41 Rotating shaft 42 Lower limb placement portion F Floor surface

Claims (9)

A seat part, a back part provided at the rear part of the seat part so as to be able to support a user's back part, and a massage part built in the back part and performing a massage operation for a user seated on the seat part A chair-type massage machine having
A chair-type massage machine comprising: a back extension means for extending the backrest portion backward with respect to the seat portion. The front part of the seat part is provided with a footrest part for massaging the user's lower limbs,
The chair-type massage machine according to claim 1, further comprising a front extending means for extending the footrest portion forward with respect to the seat portion. The length from the backrest part to the footrest part can be extended toward both the front and rear with the seat part as a boundary by the rearward extension means and / or the forward extension means. 2. The chair type massage machine according to 2. The backward extending means is
A long groove provided on the seat portion side in the vertical direction, and a guide body provided in the backrest portion and fitted in the long groove and guided along the long groove,
The chair type massage machine according to any one of claims 1 to 3, wherein an upper side of the long groove is curved rearward. The long groove includes a lower groove extending along the vertical direction, and an upper groove formed to be connected to the upper side of the lower groove and further tilted backward than the lower groove,
The backward extending means is
When the guide body is located in the lower groove, the lower side of the backrest portion is housed below the seat portion,
When the guide body is located at the boundary between the lower groove and the upper groove, the lower side of the backrest portion protrudes upward,
The backrest portion that has moved to the projecting position reclines backward when the guide body is positioned in the upper groove, and is configured to extend rearward. Chair type massage machine. The backward extending means is
A rack portion provided inside or along the long groove;
A pinion gear that moves the guide body provided on the backrest portion along a long groove by being rotationally driven in a state of being engaged with the rack portion;
The chair type massage machine according to claim 4 or 5, characterized by comprising: The footrest part can be accommodated on the lower side of the seat part,
Between the seat part and the footrest part, a footrest advance means for pulling out the footrest part from the lower side of the seat part is provided,
The said footrest advance means is provided with the additional extension means which extends further the footrest part which advanced by the said footrest advance means toward the front. The Claim 2 characterized by the above-mentioned. Chair type massage machine. The additional extension means includes
Supporting the footrest part, and a support body that is drawn forward by the footrest advancement means;
The chair type massage machine according to claim 7, further comprising: a link mechanism that connects the footrest portion to the support body so as to be swingable in the front-rear direction. The footrest part is
The lower limb insertion part that allows the user's lower limb to be inserted is provided on the front surface, and the lower limb placement part that allows the user's lower limb to be placed is provided on the rear surface.
By turning around a left and right axis, the posture can be changed to both a massage posture in which the lower limb insertion portion is directed upward and a rest posture in which the lower limb placement portion is directed upward. The chair-type massage machine according to any one of claims 2 to 8, wherein the chair-type massage machine is provided.

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