CN206566430U - Seat lift adjustment structure - Google Patents

Abstract

The utility model provides a chair lifting adjusting structure, which is characterized in that a seat cushion rod with a seat cushion is inserted into a tube body of a seat tube, a through hole is arranged at the lower part of the seat cushion rod, pushing pieces are pivoted above rail grooves at two sides of the seat cushion rod, a connecting rod with an adjusting mechanism is arranged in the seat cushion rod, a pushing piece at the lower part of the connecting rod penetrates a clamping piece and is positioned in a slant guide groove at the side edge of a butt joint seat, a sliding block and an elastic element which penetrate through the through hole are arranged in a transverse sliding groove of the butt joint seat, a shaft part which is arranged at the upper part of the connecting rod and extends into the rail groove is a linkage mechanism pivoted with an operating part, a concave part which can be supported by the pushing piece is arranged at the side edge of a pulling rod of the linkage mechanism, the sliding block which is connected with the clamping piece is separated from a linkage positioning hole of a buckling body in the seat tube to adjust the height of the seat cushion up and down, the operating part is pulled downwards to be buckled at the buckling body to form a locking state, thereby achieving the effects of stable structure and simple operation.

Description

Seat lift adjustment structure

technical field

The utility model relates to a seat lifting adjustment structure, in particular to a seat cushion rod penetrated with a seat cushion in the tube body of a seat tube, and a connecting rod of an adjustment mechanism is installed in the seat cushion rod, and the connecting rod is combined with a With the clamping part, you can move the operating part above the connecting rod upwards, and the locking part is separated from the buckle inside the seat tube to adjust the height of the seat cushion up and down, and then pull down on the operating part to make it The locking part is fastened to the fastening body to form a locked state.

Background technique

By the way, with the vigorous development of today's industry and commerce, modern people generally have the phenomenon of sedentary or insufficient exercise, which leads to a great increase in the chances of suffering from civilized diseases such as high blood pressure, diabetes, heart disease, obesity, and poor physical fitness. Only regular exercise , strengthening cardiopulmonary function, promoting metabolism and helping to eliminate psychological pressure can maintain the best physical fitness. In addition, modern people pay more attention to health, leisure and sports, so that sports equipment has gradually become popular from fitness centers to ordinary people. It is used at home, allowing users to exercise anytime and anywhere.

Furthermore, the common sports equipment on the market mainly includes treadmills, exercise bikes, elliptical machines, steppers, body shaping machines, weight training machines, etc. Among them, exercise bikes are typical aerobic fitness equipment for simulating outdoor sports (such as simulated exercise machines). Road bicycles are the main axis of design, which can simulate actions such as climbing, mountain, sprinting, etc.), also known as cardiopulmonary training equipment, which can perform cardiopulmonary capacity and muscle endurance training, improve physical fitness and consume fat for a long time, which has the effect of fitness.

The action principle of a general exercise bike is to drive the flywheel (also known as the resistance wheel) to rotate through the user stepping on the pedals with a belt or chain transmission, and use the inertial transmission force generated by the flywheel itself to achieve a certain exercise effect, and this There are two main ways to generate flywheel resistance, one is to use the friction between the brake pad and the flywheel to adjust the resistance, and the other is to use the magnetic force change of the electric valve reluctance system to control the resistance (generally called magnetic control) to achieve Requirements for various exercise intensities, and create a variety of situational changes, and the training is easy to use. Whether you are a beginner or an advanced person, you can find the appropriate exercise frequency to achieve more effective aerobic training. It is important for strengthening cardiopulmonary function and lower body Muscle strength increases and core stability also improves.

In addition to adapting to the requirements of various exercise intensities by setting the resistance on the flywheel, the exercise bike is also the key to the comfort and training effect of the user when riding the exercise bike. The height is related to the riding posture of the user. An unsuitable height will cause knee injuries, reduce the efficiency of pedaling, and cause additional burden on muscles and knee joints. Therefore, the correct riding height can protect the knees and exert the energy of pedaling. Let the spine be in a relaxed state, so that the riding training effect is better and comfortable and easy. However, the seat height adjustment method of the exercise bike generally adopts the seat adjustment mechanism with double knob design, so that the user can rotate it on the seat tube. Loosen the seat cushion rod penetrated into the seat tube with the knob on the seat tube, adjust the telescopic length of the seat cushion rod to adjust the height of the seat cushion up and down, and then lock the knob to complete the adjustment action, but this seat adjustment mechanism can only Adjust the approximate height of the seat cushion based on visual inspection and experience, and only after the user actually steps on the seat cushion can they know whether the seat cushion has been adjusted to the appropriate height. It is quite troublesome and inconvenient to get on and off the car many times without being able to sit directly on the seat cushion to adjust, and the knob cannot perform multi-stage adjustment of the seat cushion, and it is impossible to know whether the knob has actually locked the seat cushion rod. If the user is riding, the seat cushion drops instantly, which will cause the user to be frightened or accidentally injured, and it does not meet the safety requirements. The key.

Utility model content

Therefore, in view of the above-mentioned existing problems and deficiencies, the designer of the new utility model has collected relevant materials, evaluated and considered in many ways, and made use of many years of research and development experience in this industry to continuously try and modify, and only then did this seat come into being. A new type of chair lift adjustment structure was born.

For realizing above-mentioned object, the technical scheme that the utility model adopts is:

A seat lifting adjustment structure, characterized in that it includes a seat tube, a seat cushion and an adjustment mechanism, wherein:

The seat tube has a tube body combined with the preset fitness equipment, and a plurality of positioning holes for the buckle body are provided along the length direction in the accommodation space inside the tube body;

The seat cushion has a seat rod that penetrates downward into the accommodation space of the tubular body, and a transverse perforation is provided on the front side surface below the internal positioning space of the seat rod, and two sides above the seat rod are provided with At least one longitudinal rail groove, and a push piece located above the rail groove is pivotally connected in the positioning space of the seat cushion bar;

The adjustment mechanism includes a connecting rod installed in the positioning space of the seat cushion rod, a clamping part and an operating part extending out of the outside of the pipe body. In the guide groove obliquely cut on the side of the docking seat of the clamping part, and the transverse slide groove at the front side of the docking seat is provided with a slide that passes through the perforation and extends into the positioning hole to form a clamping position. block, and an elastic element is positioned at the rear side of the slider, and the operating part includes a trigger lever and a linkage mechanism pivotally connected with the trigger lever, and is horizontally inserted into the rail groove for sliding displacement from the place above the connecting rod. The shaft part of the lever is pivotally connected to the linkage mechanism, and the side of the trigger lever is provided with a concave part for the push piece to bear against; the first position where the operating part is pulled upward is to drive the link rod and link the card The workpiece is separated from the buckle body to adjust the height of the seat cushion up and down; the second position of the free state of the operation part is that the slider of the clamping part is restricted by the positioning hole of the buckle body downward, and the seat cushion can only be adjusted upward; and the operation The third position where the part is pulled downward is to drive the connecting rod and the interlocking locking part is buckled at the buckling body so that the seat cushion is in a locked state.

The seat lifting adjustment structure, wherein: the tube body of the seat tube is arranged obliquely and has an elliptical cross-section, and a plurality of buckle grooves are provided on the arc-shaped wall in front of the accommodation space of the tube body, and the buckle body is in the shape of Flat plate shape, and the two sides of the buckle body are provided with a plurality of convex buckles buckled in the buckle grooves.

Said seat lifting adjustment structure, wherein: the seat cushion is located on the two sides above the rail groove of the seat cushion bar, and opposite connecting elements are pierced, and the two connecting elements are movably pivotally connected to the shaft seat of the push piece , and the shaft seat is pierced with a bolt that resists on the concave portion of the trigger lever, and a nut is screwed on the bolt.

The seat lifting adjustment structure, wherein: the seat cushion has a gap above the positioning space of the seat cushion bar, and fixing elements are pierced at the two sides of the positioning space adjacent to the gap, and the operating part of the adjustment mechanism It also includes a torsion spring, which is pivotally connected to the two linkage pieces of the linkage mechanism at the two sides of the swing arm of the pulling lever, and a positioning column is arranged around the rotation axis, and the torsion spring is located at the two sides of the middle deformation part. The folded socket holes are respectively socketed on the positioning column and the fixing element.

The seat lift adjustment structure, wherein: the adjustment mechanism is located on the shaft of the connecting rod, and has two sides of the shaft protruding into the rail groove of the seat cushion bar for sliding displacement, and the two linkage pieces of the linkage mechanism The lower part of the middle is combined with a connecting sleeve for the shaft column to penetrate laterally to form a movable pivot.

The seat lifting adjustment structure, wherein: the seat cushion is combined with a sliding sleeve in the perforation of the seat cushion bar, and a positioning piece is combined at the rear side of the seat cushion bar corresponding to the perforation, and a positioning piece extends toward the perforation direction. Extend the sleeve, and the clamping part of the adjustment mechanism is located on the upper and lower sides of the docking seat, and the blocking element is longitudinally pierced, and a cross bar penetrating into the extension sleeve for movable displacement is provided at the rear of the docking seat, and the upper and lower sides of the slider The side surface is concavely provided with a limiting channel for the blocking element to extend into it.

The seat lifting adjustment structure, wherein: the opening peripheral edge of the seat cushion rod under the seat cushion is provided with a plurality of interlocking grooves upward, and a plurality of friction blocks of the buffer are respectively combined in the interlocking grooves, and the friction blocks It passes through the outside of the seat cushion rod and resists against the inner wall surface of the branch tube of the seat tube to be elastically deformed.

The seat lift adjustment structure, wherein: the adjustment mechanism is located at the front of the slider of the clamping member, and the upper and lower surfaces are relatively outwardly tapered to form an oblique upper abutment surface and a lower abutment whose length is shorter than the upper abutment surface The holding surface is cut inward at the rear side of the slider to provide accommodating grooves for the positioning of the elastic element, and the two sides of the elastic element are elastically deformed against the accommodating groove and the inner wall of the transverse chute respectively.

The main advantage of the utility model is that the seat tube has a seat rod with a seat cushion penetrated into it, and a perforation is provided at the bottom of the seat rod, and the rail grooves on both sides of the seat rod are pivotally connected There is a push piece, and the seat rod is a connecting rod with an adjustment mechanism installed, and the push piece pierced through the lower part of the connecting rod penetrates into the oblique guide groove on the side of the docking seat of the clamping part, and The horizontal chute of the docking seat is provided with a slide block and an elastic element passing through the perforation, and the shaft part extending into the rail groove above the connecting rod is a linkage mechanism pivotally connected to the operation part, and the linkage mechanism pivots There is a concave part on the side of the connected trigger lever that can be supported by the pusher, so that the operating part can be pulled upward to drive the connecting rod, and the slider of the clamping part can be separated from the buckle inside the seat tube. The positioning hole is used to adjust the height of the seat cushion up and down, and then the operating part is pulled down, and the interlocking clamping part is buckled on the buckle body to form a locked state. It has a stable structure, easy operation and can ensure the stability of the seat cushion when it is in motion. Effect.

The secondary advantage of the utility model is that when the user pulls the operating part upwards, the adjustment mechanism can be in the first position where the clamping part is separated from the holding body of the seat tube to adjust the height of the seat cushion up and down, while the seat When the pad rod drives the slider of the clamping part to move upward or downward, the upper or lower abutting surface will abut against the positioning hole of the buckle body to produce a little interference, and the slider will push back There is an elastic deformation on the elastic element, and because there is still space between the slider and the transverse chute of the docking seat, the slider can continue to retreat back into the docking seat, and go up along the locking body at the front of the slider Or move down to another positioning hole, the elastic restoring force of the elastic element can be used to push the slider into the positioning hole, and make the slider pass through the docking seat for a distance that can be blocked. The effect of the positioning sound allows the user to know that the adjustment is in place, thereby realizing the function of positioning reminder, facilitating multi-stage adjustment of the height of the seat cushion, and has the effect of easy operation.

Another advantage of the utility model is that when the user releases the operating part to form a free state, the adjustment mechanism can only be adjusted when the seat rod drives the slider of the clamping part down and is limited by the positioning hole of the clamping body. The second position where the seat cushion is adjusted upwards, and when the torsion spring of the operating part is pulled and the trigger lever is rotated downwards, the linkage mechanism can be moved downwards to the rail groove close to the seat cushion rod with the shaft of the connecting rod In the middle position, and the push piece pushes against the guide groove of the clamping piece, so that the docking seat can drive the slider forward into the positioning hole of the holding body for a distance, because the upper abutting surface of the slider will not be completely It extends into the positioning hole, so when the seat cushion is adjusted upwards, the slider can still be retracted into the docking seat by the reverse push of the positioning hole, so that the upward adjustment of the seat cushion will not be restricted; if the seat cushion is adjusted downwards At this time, since the lower abutting surface of the slider will fully extend into the positioning hole, the bottom of the slider will be abutted in the positioning hole to form a locked position, and the seat cushion cannot be adjusted downwards, so that the user can sit directly on the seat. The seat cushion can be adjusted upwards, and it can prevent the shock or accidental injury caused by the sudden weight loss of the user. The overall operation is more convenient, safe and reliable.

Another advantage of the present utility model is that when the user pulls down on the operating part, the adjustment mechanism can be in the third position where the clamping part is buckled on the buckling body of the seat tube for the seat cushion to form a locked state. When the user completes the height adjustment of the seat cushion, he can pull down on the operating part and drive the connecting rod to move the slider of the locking part forward into the positioning hole of the holding body to form a locking position. The sliding block will not withdraw from the positioning hole when it is affected by external force vibration, which can ensure that the overall positioning of the seat cushion is more stable and reliable, and it is not easy to shake or loosen.

Description of drawings

Fig. 1 is a perspective view of the utility model.

Fig. 2 is a three-dimensional exploded view of the utility model.

Fig. 3 is a three-dimensional exploded view of another viewing angle of the utility model.

Fig. 4 is a side sectional view of the utility model.

Fig. 5 is a partially enlarged view of the slider in Fig. 4 of the present utility model.

Fig. 6 is a top sectional view of the utility model.

Fig. 7 is a perspective view of a preferred embodiment of the utility model.

Fig. 8 is a side sectional view of the utility model when the trigger lever is pulled up.

Fig. 9 is a partial enlarged view of the utility model Fig. 8 when the slider moves up and is pushed.

Fig. 10 is a partially enlarged view of the slider in Fig. 8 of the utility model after retracting.

Fig. 11 is a partial enlarged view when the sliding block in Fig. 8 of the utility model moves down and is pushed.

Fig. 12 is a side sectional view of the utility model when the trigger lever is released.

Fig. 13 is a partially enlarged view of the free state of the slider shown in Fig. 12 of the present utility model.

Fig. 14 is a side sectional view of the utility model when the trigger lever is pressed down.

Description of reference signs: 1-seat tube; 11-pipe body; 110-accommodating space; 111-buckle groove; 12-buckle body; 121-positioning hole; Groove; 2-seat cushion; 21-seat cushion rod; 210-positioning space; 2101-notch; 211-perforation; 2111-sliding sleeve; 212-rail groove; 213-fixed plate; ;216-embedded groove; 22-push piece; 221-shaft seat; 222-bolt; 2221-nut; 23-positioning piece; 231-extension sleeve; Adjusting mechanism; 31-connecting rod; 310-grooving; 311-moving member; 3111-actuating rod; 312-shaft; 3121-shaft column; ;3212-blocking element; 3213-cross bar; 322-guiding groove; 323-slider; 3231-upper abutment surface; -elastic element; 33-operating part; 331-trigger lever; 3311-swing arm; 3312-rotating shaft; 3313-positioning column; 3314-recess; 3322-connection sleeve; 333-torsion spring; 3331-deformation part; 3332-socket hole; 4-fitness equipment; 41-frame; 411-grip; 42-pedal assembly.

detailed description

In order to achieve the above-mentioned purpose and effect, the technical means and the structure thereof adopted by the utility model are hereby illustrated in detail with respect to the preferred embodiment of the utility model. Its structure and function are as follows, so as to fully understand it.

Please refer to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, and Fig. 6, which are respectively a three-dimensional appearance diagram, a three-dimensional exploded view, a three-dimensional exploded view of another viewing angle, a side sectional view, and a diagram of the utility model. 4 Partial enlarged view and top view sectional view of the slider, it can be clearly seen from the figure that the seat lift adjustment structure of the present utility model includes a seat tube 1, a seat cushion 2 and an adjustment mechanism 3, wherein:

The hollow interior of the tube body 11 of the seat tube 1 is formed with an accommodating space 110 , the tube body 11 is arranged obliquely and has an elliptical cross-section, and a flat plate-shaped holding body 12 is arranged inside the accommodating space 110 , And the surface of the holding body 12 is provided with a plurality of positioning holes 121 arranged at intervals along the length direction of the pipe body 11, and the arc-shaped wall surface in front of the accommodating space 110 of the pipe body 11 is provided with a plurality of buckle grooves 111 facing left and right, and A plurality of protruding buckles 122 that are buckled in the buckle groove 111 are provided on both sides of the buckling body 12, and an inner sheath 13 is combined at the opening above the accommodating space 110 of the pipe body 11, and then at the front of the inner sheath 13 A groove 131 communicating with the outer surface of the pipe body 11 is provided.

The seat cushion 2 has a seat cushion bar 21 that penetrates downward into the accommodation space 110 of the tubular body 11 and has an oval cross-section. The hollow interior of the seat cushion bar 21 forms a positioning space with a gap 2101 at the upper opening. 210, and the front side surface of the positioning space 210 of the seat post 21 is adjacent to the lower opening and is provided with a transverse through-hole 211, and the sliding sleeve 2111 protruding from the front of the seat post 21 is combined in the perforation 211, and then There is at least one longitudinal rail groove 212 adjacent to the two sides of the notch 2101 on the top of the seat cushion bar 21, and the top of the seat cushion bar 21 is provided with a fixing plate 213 combined with the seat cushion 2, and above the rail groove 212 In the positioning space 210 of the seat rod 21, the connecting elements 214 (such as screws) that are relatively inwardly penetrated at the two sides of the seat post 21 are movably pivotally connected with the shaft seat 221 of the push member 22, and the shaft seat 221 is pierced with bolts 222 and It is screwed with a nut 2221 for adjusting the length of the bolt 222 extending outside the shaft seat 221, and the positioning space 210 of the seat cushion rod 21 is adjacent to the two sides of the gap 2101 and is provided with a fixing element 215 (such as a screw and a screw nut). cap).

Furthermore, an arc-shaped positioning piece 23 is combined on the rear surface of the seat post 21 corresponding to the perforation 211, and a hollow extension sleeve 231 located in the positioning space 210 extends on the positioning piece 23 toward the perforation 211, and At the periphery of the opening below the seat cushion bar 21, a plurality of buckle grooves 216 are cut upwards from the front and rear arc-shaped walls, and then buffer members 24 with a plurality of friction blocks 241 are respectively combined in the buckle grooves 216, and the friction blocks 241 wear Out of the seat post 21 and against the inner wall surface of the pipe body 11 to form an elastic deformation.

The adjustment mechanism 3 is installed in the positioning space 210 of the seat cushion bar 21 and includes a connecting rod 31, a clamping part 32 and an operating part 33 extending from the outside of the pipe body 11. The peripheral edge of the opening of the opening is relatively inwardly sectioned with slots 310 through the front and back, and horizontally on the left and right sides of the bottom of the connecting rod 31, there are actuating rods 3111 inserted into the slots 310 (such as Two flat-head screws are relatively inwardly locked into the connecting sleeve), and the slot 310 below the connecting rod 31 is combined with a docking seat 321 formed by the clamping part 32 and the connecting rod 31 to form a vertical docking seat 321, and the front side of the docking seat 321 The place is provided with a horizontal slide groove 3211 inwardly, and a blocking element 3212 (such as a screw) extending into the horizontal slide groove 3211 is longitudinally pierced at the upper and lower sides of the docking seat 321, and the docking seat 321 slides relative to the horizontal direction. The rear of the other side of the groove 3211 is provided with a cross bar 3213 (such as an adjusting screw screwed in the nut) that penetrates into the corresponding extension sleeve 231 of the positioning piece 23, and then faces on the side of the docking seat 321. The direction of the transverse chute 3211 is obliquely cut from bottom to top to provide a guide groove 322 for the actuating rod 3111 of the pusher 311 to penetrate transversely therein, and the transverse chute 3211 at the front side of the docking seat 321 is provided with There is a slider 323 .

However, the upper and lower surfaces where the front of the above-mentioned slider 323 passes through the perforation 211 are relatively outwardly tapered to form an inclined upper abutting surface 3231 and a lower abutting surface 3232 shorter in length than the upper abutting surface 3231, and on the slider The rear side of the 323 is inwardly sectioned with an accommodating groove 3233 for the positioning of the elastic element 324, and the two sides of the elastic element 324 are held against the accommodating groove 3233 and the inner wall of the transverse slide groove 3211 respectively to form an elastic deformation, and then The upper and lower sides of the slider 323 are concavely provided with a limiting channel 3234 for the blocking element 3212 of the docking seat 321 to extend into it, and the left and right sides above the connecting rod 31 are provided with a shaft portion 312 transversely. The shaft post 3121 (such as two screws passing inwardly through the connecting rod 31 and stretching into the slot 310) inserted into the slot 310, and the two sides of the shaft post 3121 (such as the head of the screw) respectively extend into the rail grooves 212 corresponding to the seat cushion rod 21; in addition, the operating part 33 includes a trigger lever 331, a linkage mechanism 332 and a torsion spring 333, and the two sides of the swing arm 3311 of the trigger lever 331 have a rotating shaft 3312 It is pivotally connected to the two linkage plates 3321 of the linkage mechanism 332, and a positioning column 3313 is provided around the rotating shaft 3312, and the positioning column 3313 is sleeved with a torsion spring 333 that is bent and formed on the side of the middle deformation part 3331. The socket hole 3332 is socketed on the fixing element 215 of the seat post 21 through the socket hole 3332 on the other side of the torsion spring 333 .

In addition, on the side of the swing arm 3311 of the trigger lever 331, a right-angled recess 3314 is provided inwardly between the rotating shaft 3312 and the positioning post 3313, and a pull handle is provided on the other side of the swing arm 3311 relative to the recess 3314. 3315, and the recess 3314 can be used for the bolt 222 of the push piece 22 to be held against it to form a position, and the linkage mechanism 332 is located at the middle and lower part of the two linkage pieces 3321, and is combined with the shaft column 3121 of the shaft portion 312 to pass through transversely. The connecting sleeve 3322 is inserted into it to form a movable pivot joint.

Please refer to Fig. 7, Fig. 8, Fig. 9, Fig. 10 and Fig. 11, which are respectively the three-dimensional appearance diagram of the preferred embodiment of the utility model, the side sectional view when the lever is pulled up, and the slider in Fig. 8 The partial enlarged view when the upward movement is pushed, the partial enlarged view after the slider retracts, and the partial enlarged view when the slider is pushed downwards can be clearly seen from the figures that the seat lifting adjustment structure of the utility model In order to be applicable to fitness equipment 4 (such as an exercise bike or a flywheel), but in actual application, it can also be a body-building fitness machine, a weight training machine or other equipment and equipment with seats. When getting on the car, the seat tube 1 and the vehicle frame 41 can be combined into one body, and the pedal assembly 42 with a turntable pivoted on the vehicle frame 41 is connected to the pulley or the pulley of the flywheel with a transmission mechanism (such as a belt or a chain, etc.). Gear, and the vehicle frame 41 front side upper part is connected with grip 411, just can drive flywheel to rotate simultaneously thereupon by trampling on pedal assembly 42, reaches certain movement effect.

When the user wants to adjust the height of the seat cushion 2, he first pulls the operating part 33 of the adjustment mechanism 3 upwards, and the end of the bolt 222 of the pusher 22 can be held against by the recess 3314 of the pull lever 331 Above, the swing arm 3311 can cooperate with the bolt 222 to rotate upwards with the shaft seat 221 as the axis center, and the rotating shaft 3312 drives the two linkage pieces 3321 and the connecting sleeve 3322 of the linkage mechanism 332 to be linked to the shaft portion of the connecting rod 31 312, so that the shaft column 3121 slides along the rail groove 212 of the seat rod 21 to resist displacement, so as to guide the connecting rod 31 to move up and down in the positioning space 210 of the seat rod 21, and the operating part 33 drives the connecting rod 31 upward. During the displacement process, the actuating rod 3111 of the pushing member 311 will push against the inner wall of the guide groove 322 of the clamping member 32, and the blocking element 3212 of the docking seat 321 will drive the slider 323 to move backward, and Through the guiding and limiting function of the cross bar 3213 in the extension sleeve 231 of the positioning piece 23, the slider 323 can be smoothly detached from the restriction of the positioning hole 121 of the seat tube 1 located in the buckling body 12, and then pulled upwards Lift the seat cushion 2 to adjust the length of the seat cushion rod 21 extending to the outside of the seat tube 1. At this time, the adjustment mechanism 3 is in the first position where the clamping part 32 is separated from the buckling body 12 of the seat tube 1 to adjust the height of the seat cushion 2 up and down. a location.

In this embodiment, as shown in FIGS. 9 to 11 , when the seat post 21 drives the slider 323 of the clamping member 32 to move upward, the upper abutting surface 3231 of the slider 323 will abut against the locking body. There is a little interference at the upper edge of the positioning hole 121 of 12, and the slider 323 pushes back against the elastic element 324 to form an elastic deformation, and there is still space between the rear of the slider 323 and the transverse slide groove 3211 of the docking seat 321 , so the slider 323 can continue to retract back into the docking seat 321, and move upward along the locking body 12 to another positioning hole 121 at the front of the slider 323, and then it can recover by virtue of the elasticity of the elastic element 324. The force pushes against the slider 323 and extends into the positioning hole 121, and makes the blocking element 3212 of the docking seat 321 block on the front side wall of the limiting channel 3234 of the slider 323, not only restricting the slider 323 from passing through the docking The distance outside the seat 321 can also produce the effect of positioning sound, so that the user can know that the slider 323 has been adjusted in place, so as to realize the effect of positioning reminder, so as to facilitate the multi-stage adjustment of the height of the seat cushion 2.

Conversely, if the user presses down on the seat cushion 2, the seat cushion rod 21 will drive the abutment surface 3232 below the slider 323 of the locking member 32 to abut against the lower edge of the positioning hole 121 of the buckling body 12 downward. , and the slider 323 pushes back against the elastic element 324 to form an elastic compression deformation, and after the slider 323 continues to move downwards to other positioning holes 121, it can rely on the elastic restoring force of the elastic element 324 Quickly push the sliding block 323 into the positioning hole 121, and during the adjustment process of the seat cushion 2, the frictional resistance generated by the friction block 241 of the buffer member 24 against the inner wall of the pipe body 11 can be used to slow down the friction resistance. The speed at which the seat cushion 2 is pulled up or lowered has the effect of easy operation.

Please refer to Fig. 12, Fig. 13, and Fig. 14, which are the side view section view when the trigger lever of the utility model is released, the partial enlarged view of the free state of the slider in Fig. 12, and the side view when the trigger lever is pressed down. It can be clearly seen from the sectional view that when the user releases the trigger lever 331 of the operating part 33 to form a free state, the elastic restoring force of the torsion spring 333 can pull the trigger lever 331 on the positioning post 3313 , and cooperate with the bolt 222 to rotate downward with the shaft seat 221 as the axis, so that the linkage mechanism 332 can move the shaft portion 312 of the connecting rod 31 downward along the rail groove 212 of the seat rod 21, and the shaft column 3121 is displaced to the middle position close to the rail groove 212, and after the pusher 311 of the connecting rod 31 is pushed against the inner wall of the guide groove 322 of the clamping member 32, the docking seat 321 drives the slider 323 to move forward and extend into the There is a certain distance to the positioning hole 121 of the buckle body 12, because the upper abutting surface 3231 of the slider 323 does not fully extend into the positioning hole 121, so when the seat cushion 2 is adjusted upwards, the slider 323 is received by the positioning hole 121 The effect of reverse pushing can still be retracted into the docking seat 321, so that the upward adjustment of the seat cushion 2 will not be restricted. The second position where the seat cushion 2 is adjusted upwards.

In this embodiment, if the seat cushion 2 is adjusted downward, since the lower abutting surface 3232 of the slider 323 will fully extend into the positioning hole 121, when the user presses down on the seat cushion 2, the slider will The bottom of 323 will resist in the positioning hole 121 to form a locking position, and the seat cushion 2 cannot be adjusted downwards, so that the user can directly sit on the seat cushion 2 for upward height adjustment, and it can prevent the seat cushion 2 from being In case of shock or accidental injury caused by the instant weight loss of the user, the overall operation is simpler, safer and more reliable.

In addition, when the user completes the height adjustment of the seat cushion 2, he can pull down the operation part 33 of the adjustment mechanism 3, so that the pull lever 331 cooperates with the bolt 222 of the pusher 22, and the shaft seat 221 serves as the axial direction. Rotate downward, and the shaft part 312 of the connecting rod 31 is moved along the rail groove 212 of the seat rod 21 by the linkage mechanism 332, and the pusher 311 is pushed against the guide groove 322 of the clamping member 32, and the The docking seat 321 drives the slider 323 to extend forward to the positioning hole 121 of the seat tube 1 located in the buckle body 12 to form a locking position, so that the slider 323 will not withdraw from the positioning hole 121 when it is affected by external force vibration, and the overall The positioning is more stable and reliable, and it is not easy to shake or loosen. At this time, the adjustment mechanism 3 is in the third position where the clamping part 32 is buckled by the buckling body 12 of the seat tube 1 so that the seat cushion 2 forms a locked state, and has a stable structure. , Easy to operate and can ensure the stability of the action.

Therefore, the utility model is mainly aimed at the seat rod 21 of the seat cushion 2 penetrated into the pipe body 11 of the seat tube 1, and the connecting rod 31 of the adjustment mechanism 3 is installed in the seat rod 21, and the connecting rod 31 is installed below the connecting rod 31. A clamping part 32 is combined at the upper part of the connecting rod 31, and an operating part 33 is pivotally connected above the connecting rod 31; the first position where the operating part 33 is pulled upward drives the connecting rod 31 and the interlocking clamping part 32 is disengaged from the inside of the seat tube 1 The seat cushion 2 can be adjusted up and down at the buckling body 12; the second position of the operating part 33 in the free state is that the slider 323 of the clamping part 32 is restricted downward by the positioning hole 121 of the buckling body 12 and can only adjust the height of the seat cushion 2. Upward adjustment; and the third position where the operating part 33 is pulled down drives the connecting rod 31 and the interlocking locking part 32 is buckled at the buckling body 12, so that the seat cushion 2 forms a locked state, thereby achieving structural stability and operation Simple effect.

The above detailed description is just a description of a preferred feasible embodiment of the present utility model, but this embodiment is not used to limit the scope of patent application of the present utility model, and all other works completed without departing from the technical spirit disclosed in the present utility model All equal changes and modification changes should be included in the scope of protection covered by the present utility model.

Claims (8)

1. a kind of seat lift adjustment structure, it is characterised in that：Include seat pipe, seat cushion and adjustment mechanism, wherein：

The seat pipe has the body being incorporated on default body-building apparatus, and is alongst provided with tubular body accommodation space The plural positioning hole of clasp body；

The seat cushion has down through in the seat pillar in the accommodation space of body, and below seat pillar positioned internal space Front side surface, which is provided with above cross-perforating, and seat pillar, is provided with least one longitudinal track slot at two sides, then in seat pillar The yoke frame above track slot is articulated with located space；

The adjustment mechanism includes connecting rod, clamping piece and the behaviour for extending body outside being installed in the located space of seat pillar Make portion, place is laterally equipped with pusher shoe below the connecting rod, and penetrated by pusher shoe have in clamping piece it is oblique on butt joint base side In the guide channel set to cuing open, and butt joint base on front side of at horizontal concrete chute in be provided through at perforation and stretch to shape in positioning hole The sliding block positioned into blocking, then place's positioning has elastic component on rear side of sliding block, and operating portion includes throw rod and and throw rod The interlinked mechanism of pivot joint, and place laterally wears and stretches into the axle portion of slide displacement in track slot and be articulated in gearing machine above the connecting rod Structure, and throw rod side is provided with the recess for being available for yoke frame to support thereon；The first position that wherein operating portion is pulled upwards It is drivening rod and interlocks clamping piece and depart from the progress seat cushion upper-lower height adjustment at clasp body；The second of operating portion free state Position is that the sliding block of clamping piece is limited downwards by the positioning hole of clasp body and can only carry out seat cushion and adjust upward；And operating portion is downward The 3rd position pulled is drivening rod and interlocking clamping piece and being held at clasp body makes seat cushion formation lock-out state.

2. seat lift adjustment structure according to claim 1, it is characterised in that：The body of the seat pipe is angularly disposed and disconnected Face is oval, and is being provided with plural catching groove in front of the accommodation space of body on curved wall, and clasp body is in tabular, and button Hold at the side of body two provided with the plural cam being held in catching groove.

3. seat lift adjustment structure according to claim 1, it is characterised in that：The seat cushion is located in the track slot of seat pillar Side is equipped with relative connecting element at two sides, and is articulated with the axle bed that yoke frame has by two connecting element activities, and axle The bolt on the recess for being held in throw rod is equipped with seat, and nut is bolted with bolt.

4. seat lift adjustment structure according to claim 1, it is characterised in that：The positioning that the seat cushion is located at seat pillar is empty Between top place with a breach, and in located space adjacent to being equipped with retaining element at the side of breach two, and the behaviour of adjustment mechanism Make portion and also include a torsion spring, and be articulated at the side of swing arm two of throw rod with rotating shaft on two double-action plates of interlinked mechanism, and Place is provided with a locating dowel around rotating shaft, and the sleeve joint hole that the torsion spring is located at the side place bending forming of intermediate deformation portion two is socketed on respectively In locating dowel and retaining element.

5. seat lift adjustment structure according to claim 4, it is characterised in that：The adjustment mechanism is located at the axle portion of connecting rod With the jack-post that slide displacement in the track slot of seat pillar is inserted at two sides, and in the middle of two double-action plates of interlinked mechanism below locate It is combined with and is available for jack-post laterally to penetrate the linking sleeve pipe to form activity pivot joint.

6. seat lift adjustment structure according to claim 1, it is characterised in that：The seat cushion is located in the perforation of seat pillar It is combined with sliding sleeve, and corresponds to be combined with spacer, and spacer at perforation towards perforation direction on rear side of seat pillar and be extended with One stretched sheathed tube, and the clamping piece of adjustment mechanism is longitudinally equipped with barrier element at two sides above and below butt joint base, and in docking Provided with penetrating in the cross bar of activity displacement in stretched sheathed tube at seat rear, and two side surfaces are concavely provided with and are available for stopping above and below sliding block Element stretches into spacing conduit in the inner.

7. seat lift adjustment structure according to claim 1, it is characterised in that：The seat pillar lower opening week of the seat cushion Cutd open upwards at edge provided with plural buckle groove, and be combined with buckle groove the plural brake pad of bolster respectively, and brake pad is worn Go out outside seat pillar and be held in seat pipe branch pipe body on wall and be resilient deformation.

8. seat lift adjustment structure according to claim 1, it is characterised in that：The adjustment mechanism is located at the cunning of clamping piece The upper and lower surface tapered lower supporting surface for being formed with oblique upper supporting surface and being shorter in length than supporting surface out against in front of block, And locate inwardly to cut open the storage tank provided with being available for flexible member to position on rear side of sliding block, and appearance is held in respectively at the side of flexible member two Groove is put with being resilient deformation at horizontal concrete chute internal face.