JP3069479U - Raising and lowering device for Japanese-style chair - Google Patents

Abstract

(57) [Summary] [Problem] To provide a raising and lowering adjustment device for a Japanese-style chair. A base frame and a seat frame are connected by a plurality of connecting rods, and the active ends of the connecting rods on both sides are connected by a single connecting rod. It controls the extension and retraction of the connecting rod connected to the middle stage, controls the extension of the connecting rod, and controls the vertical movement, so that the height of the Japanese-style chair can be adjusted according to the needs of the user, and a comfortable sitting posture It was a Japanese-style chair lift adjustment device to be acquired.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a lifting device for a chair for a Japanese-style room, in particular, a base frame and a seat frame are connected by a plurality of connecting rods, and active ends of connecting rods on both sides are connected by a single connecting rod. The interlocking device on the rear side controls the expansion and contraction of the pulling rod connected to the middle stage of the interlocking rod, controls the extension of the connecting rod to control the vertical movement, and raises the Japanese-style chair to the height required by the user. The present invention relates to a lifting and lowering adjustment device for a Japanese-style chair, which allows a user to adjust the position of the chair and obtain a comfortable sitting posture.

[0002]

[Prior art]

 In the interior of a typical Japanese-style room, a large number of trees are used, and tables with relatively short legs are used. In addition, low-level chairs that match low tables and Japanese-style chairs without legs are used. However, when sitting in such a low chair for a certain period of time, the legs may be compressed and blood circulation may be affected, the legs may become numb and walking may be difficult. For this reason, in some cases, the height of the table for the Japanese-style room has been slightly increased, and the height of the chair has been increased accordingly to prevent numbness.

The design of such a chair for a Japanese-style room usually has a fixed height, and when sitting down, forms an appropriate space between the seat of the chair and the floor so that the feet are not excessively compressed. Improves the reduction of numbness by not affecting blood flow.

[0004] However, such a Japanese-style chair has a constant height and cannot be adjusted appropriately. Therefore, when a user of a different body shape sits, there is a problem that the height space is insufficient and the feet are compressed. It was easy. In other words, the well-known Japanese-style chairs, by design, provide a function to prevent numbness for ordinary people, but failed to provide that function to some people.

[0005]

[Problems to be solved by the invention]

 It is an object of the present invention to provide a kind of Japanese-style chair raising and lowering adjusting device, which has an effect of adjusting a user's body type and height as needed, and not numbing both feet of a user even when sitting for a long time. Shall be provided.

Another object of the present invention is to provide a raising and lowering device for a Japanese-style chair, which can stably perform a raising and lowering operation of a Japanese-style chair.

[0007]

[Means for Solving the Problems]

 The invention according to claim 1 comprises a base frame and a seat frame, and the base frame and the seat frame are connected by a pair of intersecting connecting rods on both sides and a front side of the seat frame. The other side of the frame and the seat frame are connected to the frame rods on both sides and the front side, and the other side is actively combined with a pulley in a guide groove provided in each frame rod in advance, so that these connecting rods slide and open, The active ends connected to the sheet frame of the two connecting rods on both sides are connected by one interlocking rod to form an integrated interlocking relationship, and one pulling rod is set in the middle stage of the interlocking rod. The pull rod is extended toward the rear side of the seat frame, and the subsequent stage of the pull rod is a guide provided on a transmission mechanism installed on the rear side of the seat frame. It is inserted into the sleeve and is screwed with a screw rod that is linked integrally with the gear inside the transmission mechanism, and the motor of the transmission mechanism is transmitted to the gear and screw rod to cause the pull rod to expand and contract. A change of the connecting rod between the base frame and the seat frame, which causes the seat to be lifted and lowered by controlling the opening and closing of the connecting frame, and the lifting and lowering adjustment function is provided to the Japanese-style chair. It is a lifting and lowering adjustment device. According to a second aspect of the present invention, a recess is provided on one side of the guide sleeve, and a pair of microswitches is provided on each of the front end and the rear end thereof, and a pull rod passes through a pressure contact plate provided in the recess. The lifting and lowering adjustment device for a Japanese-style chair according to claim 1, characterized in that the restraint is performed at the limit of expansion and contraction in combination with the operation of the chair.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention relates to a lifting device for a Japanese-style chair, and more particularly, a base frame and a seat frame are connected by a plurality of connecting rods, and the active ends of the connecting rods on both sides are linked by one. An interlocking device on the rear side of the seat frame, which is connected by a bar, controls the extension / retraction operation of the pulling bar connected to the middle stage of the interlocking bar, controls the extension of the connecting bar, controls the vertical movement, and controls the Japanese-style chair. The present invention relates to a lifting and lowering adjustment device for a Japanese-style chair, which allows the height to be adjusted according to the necessity of the chair, thereby obtaining a comfortable sitting posture.

[0009]

【Example】

 As shown in FIGS. 1 to 3, the present invention has a basic structure composed of a base frame 10 and a seat frame 20. The connecting rods 31, 32, 33 are connected at one side to the base frame 10 and both sides of the seat frame 20 and to the front frame rods 11, 21, 12, 22 respectively. The other side is actively combined with guide grooves 111, 211, 121, 221 previously provided in each frame rod by pulleys 34, 35, 36, whereby the connecting rods 31, 32, 33 slide. To perform deployment and closing operations. The active ends connected to the seat frame 20 of the two connecting rods 31 and 32 on both sides are connected by one interlocking rod 37 to form an integrated interlocking relationship, and one pulling rod 38 is connected to the middle stage of the interlocking rod 37. The pull rod 38 is extended toward the rear side of the seat frame 20, and the rear end of the pull rod 38 is inserted into a guide sleeve 41 provided on a transmission mechanism 40 installed on the rear side of the seat frame 20. The screw 44 is screwed together with the gear 42 inside the transmission mechanism 40, and the motor 44 of the transmission mechanism 40 is transmitted to the gear 42 and the screw rod 43 to cause the pull rod 38 to expand and contract. . One side of the guide sleeve 41 is provided with one concave portion 411, and a front end and a rear end thereof are provided with a pair of micro switches 45 and 46, respectively, on which a push rod 38 is provided. Combining the passage of the chairs, the restraint at the limit of expansion and contraction is performed, and thus the lifting and lowering adjustment device of the Japanese-style chair of the present invention is configured.

As shown in the operation relation display diagrams of FIGS. 4 and 5 and the status display diagrams of FIGS. 6 and 7, the structure described above controls the operation of the motor 44 in the interior of the chair for raising and lowering the Japanese-style room. The transmission is transmitted to the gear 42, and the screw rod 43 is interlocked with the gear 42, and the pull rod 38 is moved forward and backward under the screwing relation of the screw rod 43 and the limit of the guide sleeve 41. When the pull rod 38 contracts rearward, the interlocking rod 37 connected to the front end of the pulling rod 38 receives the pull and moves rearward, and the two connecting rods 31 and 32 connected to both ends of the interlocking rod 37. The active end slides rearward synchronously, thus causing the three sets of connecting rods 31, 32, 33 to pinch and raise, whereby the seat frame 20 is raised to an appropriate height. When the pull rod 38 protrudes forward, the connecting rod 37 is pushed back, and at the same time, the active ends of the connecting rods 31 and 32 slide forward, and the three sets of connecting rods 31, 32 and 33 assume an extended state. Thus, the height of the seat frame 20 is reduced. The expansion and contraction movement of the pulling rod is combined with the extension and the change of the crossing of the cross-type connecting rods 31, 32, 33, so that the height of the Japanese-style chair can be adjusted as needed by the user, thereby providing the best seat. You can get a figure.

In the above-described design of the lifting / lowering adjusting device, the connecting rod 33 on the front side of the base frame 10 and the seat frame 20 assists a phenomenon in which the supporting force of the connecting rods 31 and 32 on both sides is insufficient, and the connecting rod on the front side is used. 33 effectively shares the weight of the user received by the connecting rods 31 and 32 on both sides, allows the seat frame 20 to move up and down more smoothly, does not cause the problem of wobble and the movement is not smooth, and The combination of the micro switches 45 and 46 provided before and after the guide sleeve 41 allows the motor 43 to be stopped at any time during the elevating process of the seat frame 20 to adjust the altitude to the best, and furthermore, to limit the elevating of the seat frame 20. It stops automatically when it reaches, it can effectively prevent excessive elevating and burning of parts, and it is designed to be extremely practical and safe. I have.

As can be seen from the above description, in the Japanese-style chair lifting / lowering apparatus of the present invention, several sets of connecting rods are used for connecting the base frame and the seat frame, and the active ends of the connecting rods on both sides are used. A link mechanism connected by one link rod and provided on the rear side of the seat frame controls a pull rod connected to the middle stage of the link rod to perform an expansion and contraction operation, thereby expanding and closing the link rod. As a result, the elevation of the seat frame can be controlled, and the height of the Japanese-style chair can be adjusted as needed by the user, effectively preventing the occurrence of numbness in both feet and providing the best seat for the user. He has been able to gain a figure and therefore effectively solves the problems of known technology.

[0013]

[Effect of the invention]

 According to the present invention, a chair for Japanese-style rooms is provided with a function of raising and lowering, and according to the present invention, the user can adjust the altitude of the chair for Japanese-style rooms as needed to obtain the best sitting posture. Has solved the disadvantages. Taken together, the present invention has extremely industrial value and practicality, and can be said to be novel.

[Brief description of the drawings]

FIG. 1 is a structural view of a Japanese-style chair of the present invention.

FIG. 2 is an exploded perspective view of the Japanese-style chair of the present invention.

FIG. 3 is a schematic view showing the structure of a Japanese-style chair according to the present invention.

FIG. 4 is a side view showing the operation of the Japanese-style chair according to the present invention when the chair is raised and lowered.

FIG. 5 is a view showing a planar motion relation at the time of raising / lowering adjustment of the Japanese-style chair of the present invention.

FIG. 6 is a perspective view of the Japanese-style chair of the present invention in an unadjusted state.

FIG. 7 is a perspective view showing a state in which the height of the Japanese-style chair of the present invention is adjusted to be high.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 Base frame 11, 12 Frame rod 111, 121 Guide groove 20 Seat frame 21, 22 Frame rod 211, 221 Guide groove 31, 32, 33 Connecting rod 34, 35, 36 Pulley 37 Interlocking rod 38 Pulling rod 381 Pressure contact plate 40 Transmission Mechanism 41 Guide sleeve 411 Depression 42 Gear 43 Screw rod 44 Motor 45, 46 Micro switch

Claims (2)

[Utility model registration claims] 1. A vehicle comprising a base frame and a seat frame, wherein the base frame and the seat frame are connected to each other by a pair of intersecting connecting rods on both sides and a front side of the seat frame. The other side is connected to the frame rods on both sides and the front side, and the other side is actively combined with a pulley in a guide groove provided in advance in each frame rod, whereby these connecting rods slide to open and close. The active end connected to the seat frame of the two connecting rods on both sides is connected by one interlocking rod to form an integrated interlocking relationship, and one pulling rod is connected to the middle stage of the interlocking rod, and this pulling is performed. A rod is extended toward the rear side of the seat frame, and a rear stage of the pull rod is provided in a guide sleeve provided in a transmission mechanism installed on the rear side of the seat frame. And screwed together with a screw rod that is integrated with the gear inside the transmission mechanism, and the motor of the transmission mechanism is transmitted to the gear and screw rod to cause the pull rod to expand and contract, thereby making the base frame and the seat An apparatus for raising and lowering a chair for a Japanese-style room, characterized in that a change in the length of the connecting rod between the frames and a change in the tension between the frames are performed to control the raising and lowering of the seat frame, and a function of adjusting the raising and lowering of the Japanese-style chair is provided. 2. One side of the guide sleeve is provided with a recess, and a pair of microswitches is provided at each of a front end and a rear end thereof, and a pull rod passes through a pressure contact plate provided in the recess. The lifting and lowering adjustment device for a chair for a Japanese-style room according to claim 1, wherein the combination is controlled to limit the expansion and contraction.