TWM584362U - Reset hydraulic structure for door hinge - Google Patents

Abstract

The hydraulic structure for resetting the rear door button includes a rear door button and a hydraulic buffer device. A hydraulic buffer device is installed between the first and second rear button pieces of the rear door button, and the door piece is directed to the door frame through the hydraulic buffer device. When the direction is closed, it can buffer the closing speed of the door and ensure the safety of closing the door. At the same time, it can prevent the door and the door frame from being damaged by collision, which helps to improve the service life. The lever part and the thick lever part allow the door piece to increase the hydraulic oil passing rate through the thin rod part at the end, thereby increasing the closing force, and indeed achieves the purpose of the door piece being locked and closed, which greatly improves the use effect of the structure.

Description

Hydraulic structure for resetting rear door button

This creation is about a rear door button, especially a reset hydraulic structure of the rear door button.

Generally, the door that is manually opened is the first and second rear button of a rear button connected to the door itself and the door frame, respectively, and is equipped with a hinge disposed between the first and second rear buttons to allow the user to manually open the door. / Close the door. However, when the user leaves in a hurry, he may forget to close the door; or, if the user fails to pay attention when opening / closing the door (or because of external forces such as strong wind), excessive force may be applied to cause the door and the wall / door frame to fail. Sound and even damage due to strong collision. Therefore, it is necessary to add a device that can automatically close and buffer the rear door button. However, after the rear door button is added with a buffer device, it has the effect of buffering and closing the door when the door is closed, but the door is often closed due to the buffer stroke. When closing, the lock tongue is unable to be retracted due to the lack of strength when it hits the door frame, which prevents the door from being closed properly, which causes inconvenience in use.

In view of this, the author has many years of experience in manufacturing development and design of related products. In view of the above goals, after careful design and careful evaluation, he finally has a practical and practical creation.

The technical problem to be solved in this creation lies in the above-mentioned existing technologies. Missing, providing a reset hydraulic structure for the rear door button.

The above structure includes a rear button and a hydraulic buffer device. The rear button includes a first rear button and a second rear button. The first and second rear buttons are provided with a sleeve, and the first The upper end of the sleeve of the rear button is provided with a fixed hole with a non-circular inner diameter. The hydraulic buffer device is disposed between the sleeves of the first and second rear buttons, and includes an outer shaft and an inner shaft. , A lubricating group, an elastic member, a guide block, and an adjusting member, wherein one end of the outer shaft forms an open end, and a hollow accommodation space is set inside the outer shaft, and the other end of the outer shaft is A closed end is formed, a screw hole is arranged at the bottom of the closed end to communicate with the accommodation space, and an outer diameter of the outer shaft penetrates the accommodation space laterally to set a limit bolt, and the inner shaft system sequentially assembles the lubrication After the assembly, the elastic member and the guide block are assembled into the accommodating space of the outer shaft, a non-cylindrical fixing portion is formed at the top of the inner shaft, and a ring groove and a Bead groove, the ring groove is matched with a C-shaped buckle to limit the lubricating group, and the outer end of the inner shaft is provided with an outer diameter surface with There is a combination of a plurality of longitudinal limit guide grooves. The lubricating group has a ring-shaped housing. A roller bearing is arranged inside the ring-shaped housing, and a groove is provided at the bottom of the ring-shaped housing to match a bead bowl. At least one steel ball is slidably restrained in a bead groove of the inner shaft, the elastic member is sleeved on the inner shaft, and a guide hole is provided at the center of the guide block with a combination hole having a plurality of longitudinal limit guide ribs on the inner diameter surface, and The guide block is assembled to the joint part of the inner shaft in a lifting and displaceable manner by using the joint hole, and an inner channel of the joint hole is provided through the guide block to provide an oil passage, and a check valve is provided beside the oil passage. The guide block is provided with two symmetrical spiral guide grooves on the outer diameter. The two spiral guide grooves communicate with the coupling hole and are connected through the stopper. The adjusting member has a threaded portion and The matching screw is arranged in the screw hole of the outer shaft, and a control rod is provided at the top of the threaded portion and extends into the oil passage of the guide block. The control rod forms a thin rod portion with a different outer diameter from bottom to top. And a thick rod.

Preferably, the outer shaft and the inner shaft surface are provided with a plurality of O-rings.

Preferably, a limiting block is fixed on the upper end of the sleeve of the first rear button plate in a non-rotatable manner, the limiting hole is provided with the non-circular hole-shaped fixing hole portion, and the side of the sleeve and the limit The side of the bit block communicates with each other and a pressing screw hole is penetrated through the fixing hole portion, and is locked and fixed by a bolt.

Preferably, the outer diameter of the stopper and the inner diameter of the upper end of the sleeve of the first rear button piece are engaged with each other by using a plurality of longitudinal concave-convex structures, and the stopper portion is convexly arranged outside the sleeve, and Cover the restrictions with a cover.

Preferably, the outer diameter of the closed end of the outer shaft and the inner diameter of the lower end of the sleeve of the second rear button piece are engaged with each other by a plurality of longitudinal concave-convex structures, and the bottom end portion of the outer shaft is convexly arranged outside the sleeve. And cover it with a cover.

Preferably, a limiting hole diameter is further enlarged at the outer end of the screw hole of the outer shaft, and a limiting portion with a larger outer diameter is formed at the end of the adjusting member, and a non-circular tool hole is provided at the end surface of the limiting portion. .

Preferably, the inner shaft is provided with a longitudinally long groove below the bead groove, and a limit rod is penetrably moved up and down along the longitudinally long groove, and an adjustment screw hole is provided inward from the top of the inner shaft It communicates with the longitudinal long groove, and an adjustment screw is combined with the screw set to further restrict the position of the limit rod through the adjustment screw.

Preferably, the sleeve is provided on the upper section of the side of the first rear button, and a support sleeve is provided on the lower section, and a fitting space is formed between the sleeve and the support sleeve. The sleeve of the button piece is located at the middle section of the side, and the upper and lower ends of the sleeve each form an engaging space, and the outer shaft of the hydraulic buffer device extends further down from the closed end with a smaller outer diameter. The shaft body is matched with a roller bearing, whereby the sleeve and the support sleeve of the first rear button piece are relatively engaged with the engaging space of the second rear button piece, and the fitting space sleeve is sleeved at the same time. Set on the second rear button A sleeve of the hydraulic buffer device, and the outer diameter of the closed end of the hydraulic buffer device and the inner diameter of the lower end of the sleeve of the second rear button piece are engaged with each other by a plurality of longitudinal concave-convex structures. The cylindrical bearing is sleeved with the support sleeve of the first rear button piece.

Contrast with the effect of the previous technology: this creation is to install a hydraulic buffer device between the first and second rear button of the door back button. When the door is closed in the direction of the door frame through the hydraulic buffer device, it can buffer the closing speed of the door. To ensure the safety of closing the door, at the same time to prevent the door and the frame from being damaged, which helps to improve the service life. The adjustment part of the hydraulic buffer device is provided with a thin rod and a thick rod on the control lever, so that the door is at the end. It can increase the hydraulic oil passing rate through the thin rod part, thereby increasing the closing force of the door, and indeed achieves the purpose of locking and closing the door piece, which greatly improves the use effect of the structure.

10‧‧‧door back button

11‧‧‧The first rear button

111‧‧‧ sleeve

112‧‧‧ support sleeve

113‧‧‧ fit space

12‧‧‧Second rear button

121‧‧‧ sleeve

122‧‧‧ snap-in space

13‧‧‧ limit block

131‧‧‧Fixing hole

132‧‧‧ tight screw hole

133‧‧‧Bolt

14‧‧‧ Cover

20‧‧‧Hydraulic buffer device

21‧‧‧outer shaft

211‧‧‧accommodation space

212‧‧‧Thread hole

213‧‧‧Limited aperture

214‧‧‧Limit

215‧‧‧O-ring

216‧‧‧Shaft

217‧‧‧ roller bearing

22‧‧‧Inner shaft

220‧‧‧O-ring

221‧‧‧Fixed section

222‧‧‧Circular groove

223‧‧‧bead trough

224‧‧‧C buckle

225‧‧‧long slot

226‧‧‧ limit lever

227‧‧‧Adjust screw holes

228‧‧‧adjusting screw

229‧‧‧Combination

23‧‧‧Lubrication group

231‧‧‧Ring shell

232‧‧‧ roller bearing

233‧‧‧groove

234‧‧‧Bead Bowl

235‧‧‧steel ball

24‧‧‧ Elastic Parts

25‧‧‧Guide block

251‧‧‧Combination hole

252‧‧‧oil channel

253‧‧‧Check valve

254‧‧‧Screw guide groove

26‧‧‧Adjustment

261‧‧‧Thread

262‧‧‧ Joystick

263‧‧‧ thin rod

264‧‧‧thick rod

265‧‧‧Limiting Department

266‧‧‧tool hole

Figure 1: This is a perspective view of this creation.

Figure 2: This is an exploded view of this creation.

Figure 3: This is the closing diagram of the door of this creation.

Figure 4: A sectional view of the closed state of the corresponding door for this creation.

Figure 5: A partially enlarged cross-sectional view of the closed state of the door corresponding to this creation.

Figure 6: This is the opening diagram of the door for this creation.

Figure 7: A cross-sectional view of the opened state of the corresponding door in this creation.

Figure 8: A partially enlarged cross-sectional view of the opening state of the corresponding door of this creation.

Figure 9: This is a schematic diagram of the closing action of the door of this creation.

Figure 10: This is a cross-sectional view of the closing action of the door corresponding to this creation.

Figure 11: A partially enlarged cross-sectional view of the closing action of the corresponding door in this creation.

Figure 12: This is a schematic diagram of adjusting the spring weight of the spring for this creation.

FIG. 13 is an exploded view of another embodiment of the present invention.

FIG. 14 is a combined sectional view of another embodiment of the present invention.

In order for your reviewers to have a better understanding and understanding of the purpose, characteristics and effects of this creation, the following is to be accompanied by the [Simplified Description of the Drawings] as detailed below: First of all, please refer to Figures 1 and 2 and 4 As shown in FIGS. 5 and 5, a reset hydraulic structure of a rear door button includes a rear door button 10 and a hydraulic buffer device 20. The rear door button 10 includes a first rear button piece 11 and a second rear button piece 12. Each of the first and second rear button pieces 11 and 12 is provided with a sleeve 111 and 121, and an upper end of the sleeve 111 of the first rear button piece 11 is non-rotatably fixed with a limiting block 13 which is 13 The outer diameter and the inner diameter of the upper end of the sleeve 111 of the first rear button 11 are engaged with each other by a plurality of longitudinal concave-convex structures, and the limiting block 13 is axially provided with the non-circular hole-shaped fixing hole portion 131. The side of the sleeve 111 communicates with the side of the stopper 13 and passes through the fixing hole 131 to provide a tightening screw hole 132 and is locked and fixed through a bolt 133. The stopper part is convexly provided on the above. The sleeve 111 is covered by an outer cover 14, and the hydraulic buffer device 20 is disposed on the first and second rear button pieces 11. Between the sleeves 111 and 121 of 12 and 12 includes an outer shaft 21, an inner shaft 22, a lubrication group 23, an elastic member 24, a guide block 25, and an adjustment member 26, wherein one end of the outer shaft 21 is formed An open end is provided with a hollow accommodation space 211 inside the outer shaft 21, and the other end of the outer shaft 21 forms a closed end, and a screw hole 212 is provided at the bottom of the closed end to communicate with the accommodation space 211. A limiting aperture 213 is further enlarged at the outer end of the screw hole 212, and an outer diameter of the outer shaft 21 penetrates the accommodation space 211 laterally to set a limiting bolt 214, and a plurality of outer diameter surfaces of the outer shaft 21 are provided with a plurality of limiting holes 213. O-ring 215, the outer diameter of the closed end of the outer shaft 21 and The inner diameter of the lower end of the sleeve 121 of the second rear button piece 12 is engaged with each other by a plurality of longitudinal concave-convex structures, and the bottom end portion of the outer shaft 21 is convexly arranged outside the sleeve 121 and is covered by an outer cover 14 Overcoming restrictions, the inner shaft 22 is assembled into the lubricating group 23, the elastic member 24, and the guide block 25 in sequence, and then assembled into the accommodation space 211 of the outer shaft 21. The top end of the inner shaft 22 forms a non-cylindrical shape. An annular groove 222 and a bead groove 223 are sequentially arranged below the fixed portion 221. The annular groove 222 is matched with a C-shaped buckle 224 to limit the lubrication group 23, and the inner shaft 22 is formed by Below the bead groove 223 is provided a longitudinally long groove 225, and a limit rod 226 is passed through the longitudinally long groove 225 to move up and down, and an adjustment screw hole 227 and the longitudinal direction are provided inward from the top of the inner shaft 22. The long groove 225 communicates with each other, and an adjustment screw 228 is assembled with the screw setting, and then the position of the limit rod 225 is restricted by the adjustment screw 228, and an outer diameter surface at the bottom end of the inner shaft 22 has a plurality of longitudinal limit guides. The joint portion 229 of the groove is further provided with a plurality of O-rings 220 on the outer diameter surface. The lubricating group 23 has an annular housing 231. A roller bearing 232 is provided inside the body 231, and a groove 233 is further provided at the bottom of the ring-shaped housing 231. At least one steel ball 235 is slidably restrained in the bead groove 223 of the inner shaft 22 with a bead bowl 234. The elastic member 24 is sleeved on the inner shaft 22 and abuts against the bottom of the limiting rod 226 to form a restriction. The guide block 25 has a coupling hole 251 with an inner diameter surface having a plurality of longitudinal limiting guide ribs. The coupling hole 251 sets the guide block 25 to the joint portion 229 of the inner shaft 22 so as to be able to move up and down. The inner bottom of the coupling hole 251 is provided with an oil passage 252 through the guide block 25. The oil passage 252 A non-return valve 253 is provided beside the guide block 25. The guide block 25 is provided with two symmetrical spiral guide grooves 254 on the outer diameter. The two spiral guide grooves 254 communicate with the coupling hole 251 and are subject to the limit. The bolt 214 is connected through. The adjusting member 26 has a threaded portion 261 and is screwed into the screw hole 212 of the outer shaft 21. A control rod 262 is provided at the top of the threaded portion 261 and extends into the oil of the guide block 25. In the channel 252, the control lever 262 forms a thin rod portion 263 and a thick rod portion 264 with different outer diameters from bottom to top, and the end of the adjusting member 26 is shaped. A larger outer diameter portion of the stopper 265, the stopper end portion 265 A non-circular tool hole 266 is provided on the surface.

The structure of the structure, please refer to FIG. 1 to FIG. 5, the hydraulic buffer device 20 is a ring-shaped housing 231 of the lubricating group 23 set by an inner shaft 22, and a roll is installed inside the ring-shaped housing 231. The column bearing 232 is in contact with the inner shaft 22, and the lubricating group 23 is restricted by the C-shaped buckle 224 of the inner shaft 22, and the bottom of the ring-shaped housing 231 is matched with the bead bowl 234 to limit at least one steel ball 235 In the bead groove 223 of the inner shaft 22, the lubricating group 23 can be smoothly mounted on the inner shaft 22, and the elastic member 24 is sleeved on the inner shaft 22 from bottom to top and abuts against the limit position At the bottom of the lever 226, the guide block 25 is non-rotatably assembled with the joint portion 229 of the inner shaft 22 with a coupling hole 251, and the elastic member 24 is limited between the limit lever 226 and the guide block 25. Finally, the inner shaft 22 is housed in the accommodating space 211 of the outer shaft 21 together with the lubricating group 23, the elastic member 24 and the guide block 25, and the ring-shaped housing 231 of the lubricating group 23 is further connected with The inner wall of the accommodating space 211 of the outer shaft 21 is tightly fixed. Finally, a limiting bolt 214 is passed through the outer shaft 21 and the positioning is restricted by the symmetrical guide grooves 254 of the guide block 25. When the inner shaft 22 is rotated, the helical guide groove 254 of the guide block 25 will rotate along the stopper bolt 214 to cause a state of lifting displacement at the joint portion 229 of the inner shaft 22, thereby compressing the elastic member 24. And the pressure relief effect, and the hydraulic buffer device 20 is installed between the sleeves 111 and 121 of the first and second rear button pieces 11 and 12, wherein the fixing portion 221 of the inner shaft 22 is fastened to the first The fixing hole portion 131 of the upper limit block 13 of the rear button piece 11 is locked with a bolt 133 through the side tightening screw hole 132 to fix the limit block 13 and the inner shaft 22 tightly, thereby The combination of the shaft 22 and the first rear button 11 is linked, and the outer diameter of the closed end of the outer shaft 21 and the inner diameter of the lower end of the sleeve 121 of the second rear button 12 are engaged with each other by a plurality of longitudinal concave-convex structures. Finally, hydraulic oil is injected into the accommodation space 211 from the screw hole 212 at the bottom of the outer shaft 21, and the adjustment member 26 is locked into the screw hole 212 to be closed and fixed. At the same time, the control rod 262 is passed through the oil passage of the guide block 25. 252. In a state where the first and second rear button pieces 11 and 12 are superimposed, The thick rod portion 264 of the control rod 262 extends into the coupling hole 251 of the guide block 25, and the thin rod portion 263 is relatively accommodated in the oil passage 252. Through the above assembly process, a kind of rear door is completed. The hydraulic structure of the reset button.

For the actual use of the structure, please refer to Figures 3, 4, and 5, and Figures 6, 7, and 8. The rear door button 10 is used to fix the first rear button plate 11 to the door plate A, and The second rear button 12 is fixed on the door frame B, and the closing speed of the door after the door is opened is adjusted by the hydraulic buffer device 20. When the first and second rear buttons 11 and 12 are stacked, it is the door. The state that A is closed on the door frame B, thereby, when the door piece A is opened, the first rear button piece 11 俾 will rotate the inner shaft 22 to rotate the guide block 25 with the spiral guide groove 254 relative to the limit position. The bolt 214 rotates and rises and displaces along the joint portion 229 of the inner shaft 22, and when the guide block 25 is displaced, the hydraulic oil in the accommodation space 211 flows to the guide block 25 through the oil passage 252 and the check valve 253 And the adjusting piece 26 allows the door piece A to be opened smoothly, and the guide block 25 will squeeze the elastic piece 24, and at the same time, the oil passage 252 is opposed to the thick rod portion 264 of the control rod 262. At this time, When the door piece A is opened more than 90 degrees, the diameter of the thick rod portion 264 is reduced relative to the oil passage 252, which greatly reduces the amount of hydraulic oil that can pass through, and the check valve 253 is added Off the hydraulic return, so that the door sheet in the absence of external forces at A, formed in any state of rest, and then replace the conventional door stop having a stop state.

Conversely, when external force intervenes to push door A to close toward door frame B, please refer to Figures 9 to 11 and cooperate with Figures 3, 4, and 5. Then, through the first rear button 11, the inner shaft 22 is then reversed. When the opening angle of the door piece A is less than 90 degrees, the inertia force of the door piece A is used to gradually rotate the first rear button piece 11 while rebounding through the elastic member 24 to push the guide block 25 to sink. The thick rod portion 264 of the control rod 262 has not yet separated from the oil passage 252, thereby reducing the amount of hydraulic oil passing to achieve the purpose of buffering and closing the door. When the guide block 25 continues to sink and the oil passage 252 is opposed to the thin rod portion of the control rod 262 263 When the diameter of the oil passage 252 becomes larger, the amount of hydraulic oil passing increases, which causes the guide block 25 to sink faster and affects the rotation force of the inner shaft 22, thereby increasing the force of the door piece A toward the door frame B. When the locking tongue of the door piece A touches the door frame B, it can be surely retracted to achieve the purpose of closing and locking the door.

Furthermore, in this creation, the depth of the adjusting member 26 in the screw hole 212 can be adjusted by screwing, and then the position of the thin and thick rod portion 263 of the control rod 262 can be adjusted to determine the degree and increase of the cushion provided by the hydraulic buffer device 20. Time to close.

In addition, the aforementioned limit lever 226 is located at the top of the longitudinal long groove 225 and abuts against the limit by the adjusting screw 228, so that the spring member 24 is formed with a large gap and the smallest number of elastic pounds when it is restricted by the limit lever 226. (As shown in Fig. 10), however, when the mass of the installation door A increases, the adjustment screw 228 can be screwed down along the adjustment screw hole 227, please refer to Fig. 12 at the same time. Display, and drive the limit rod 226 to move downward along the longitudinal long groove 225, and then compress the spring member 24 downward, so that the gap of the spring member 24 is reduced and the effect of increasing the elastic pounds is achieved.俾 It can be adjusted and used with the quality of door A, which greatly improves the practicality of structural use.

For another embodiment of the structure, please refer to FIGS. 13 and 14 again. The sleeve 111 is provided at the upper section of the side of the first rear button 11 and the support sleeve 112 is provided at the lower section. A fitting space 113 is formed between the sleeve 111 and the support sleeve 112. The sleeve 121 of the second rear button piece 12 is located at the middle portion of the side, and the upper and lower ends of the sleeve 121 each form an engagement. Space 122, the outer shaft 21 of the hydraulic buffer device 20 is connected to the closed end, and a shaft body 216 with a smaller outer diameter is extended downward, and a roller bearing 217 is set in cooperation with the first rear button piece. The sleeve 111 and the support sleeve 112 of 11 are oppositely fitted into the engaging space 122 of the second rear button 12, and the fitting space 113 is set on the sleeve 121 of the second rear button 12. The outer shaft 21 of the hydraulic cushioning device 20 not only uses the closed outer diameter and the inner diameter of the lower end of the sleeve 121 of the second rear button piece 12 to make use of a plurality of longitudinal uneven structures. In addition to the engaging installation, the roller bearing 217 sleeved by the shaft body 216 and the support sleeve 112 of the first rear button piece 11 are sleeved and connected, which helps to improve the space between the door rear button 10 and the hydraulic buffer device 20. The smoothness of operation can effectively improve the service life of the structure.

By virtue of the structure of the above specific embodiment, the following benefits can be obtained: This creation is based on the installation of a hydraulic buffer device 20 between the first and second rear button pieces 11 and 12 of the door rear button 10, and the door is let through the hydraulic buffer device 20 When the sheet A is closed in the direction of the door frame B, the closing speed of the door sheet A can be buffered to ensure the safety of closing the door, and at the same time, the door sheet A and the door frame B can be prevented from being impacted and damaged, which helps to improve the service life. The piece 26 is further provided with a thin rod portion 263 and a thick rod portion 264 on the control lever 262, so that the door piece A can increase the rate of hydraulic oil passage through the thin rod portion 263 at the end, thereby increasing the closing force and indeed reaching the door piece. The purpose of A lock-in closing greatly improves the use of the structure.

In summary, this creation has indeed achieved a breakthrough structural design, with improved creative content, and at the same time, it can achieve industrial applicability and progress. This creation has not been seen in any journals, and it is also novel. In accordance with the relevant provisions of the Patent Law, I submitted an application for a creation patent in accordance with the law.

The above is only one of the preferred embodiments of this creation. When it cannot be used to limit the scope of implementation of this creation; that is, all equal changes and modifications made according to the scope of the patent application for this creation shall still belong to this creation. Within the scope of the patent.

Claims (8)

A hydraulic structure for resetting a rear door button includes a rear door button, including a first rear button piece and a second rear button piece. Both the first and second rear button pieces are provided with a sleeve, and the first rear button piece is provided with a sleeve. The upper end of the sleeve of the button piece is provided with a fixed hole with a non-circular inner diameter; a hydraulic buffer device is inserted between the sleeves of the first and second rear button pieces, and includes an outer shaft and an inner shaft , A lubricating group, an elastic member, a guide block, and an adjusting member, wherein one end of the outer shaft forms an open end, and a hollow accommodation space is set inside the outer shaft, and the other end of the outer shaft is A closed end is formed, a screw hole is arranged at the bottom of the closed end to communicate with the accommodation space, and an outer diameter of the outer shaft penetrates the accommodation space laterally to set a limit bolt, and the inner shaft system sequentially assembles the lubrication After the assembly, the elastic member and the guide block are assembled into the accommodating space of the outer shaft, a non-cylindrical fixing portion is formed at the top of the inner shaft, and a ring groove and a Bead groove, the ring groove is matched with a C-shaped buckle to limit the lubricating group, and the outer end of the inner shaft is provided with an outer diameter surface with a compound The lubricating group has a ring-shaped housing with a roller bearing inside the ring-shaped housing, and a groove is provided at the bottom of the ring-shaped housing. At least one steel ball is slidably restrained in the bead groove of the inner shaft. The elastic member is sleeved on the inner shaft. A center hole having a plurality of longitudinal limit guide ribs on the inner diameter surface is provided at the center of the guide block, and is utilized. The coupling hole sets the guide block to the joint portion of the inner shaft so as to be able to move up and down, and the bottom of the coupling hole is provided with an oil passage through the guide block, and a check valve is provided beside the oil passage. The guide block is provided with two symmetric spiral guide grooves with an outer diameter. The two spiral guide grooves communicate with the coupling hole and are connected through the limiting bolt. The adjusting member has a threaded portion and cooperates with the guide piece. A screw is arranged in the screw hole of the outer shaft, and a control rod is arranged at the top of the threaded portion and extends into the oil passage of the guide block. The control rod forms a thin rod portion with a different outer diameter from bottom to top, and A thick rod. According to the reset hydraulic structure of the rear door button described in item 1 of the scope of the patent application, the outer shaft and the inner shaft surface are provided with a plurality of O-rings. According to the hydraulic structure for resetting the rear button of the door according to item 1 of the scope of patent application, the upper end of the sleeve of the first rear button is non-rotatably fixed with a limiting block, and the limiting axis is provided with a non-circular hole. The fixing hole portion is shaped, and the side of the sleeve is in communication with the side of the stopper, and a tight screw hole is penetrated through the fixing hole portion, and is locked and fixed by a bolt. According to the reset hydraulic structure of the rear door button described in item 3 of the scope of the patent application, wherein the outer diameter of the stop block and the inner diameter of the upper end of the sleeve of the first rear button piece are engaged with each other by a plurality of longitudinal concave-convex structures, Moreover, the limiting block part is protruded outside the sleeve, and is covered by an outer cover. The reset hydraulic structure of the rear door button according to item 1 of the scope of the patent application, wherein the outer diameter of the closed end of the outer shaft and the inner diameter of the lower end of the sleeve of the second rear button are engaged with each other by a plurality of longitudinal concave-convex structures. The bottom end portion of the outer shaft is convexly arranged outside the sleeve, and is restricted by an outer cover. According to the reset hydraulic structure of the rear door button according to item 1 of the scope of the patent application, the outer end of the screw hole of the outer shaft is further enlarged with a limiting aperture, and the end of the adjusting member forms a limiting position with a larger outer diameter. A non-circular hole-like tool hole is provided on the end face of the limiting portion. According to the reset hydraulic structure of the rear door button according to item 1 of the scope of the patent application, wherein the inner shaft is provided with a longitudinally long groove under the bead groove, and a limit is passed through the longitudinally long groove The position rod is further provided with an adjustment screw hole inward from the top of the inner shaft to communicate with the longitudinal long groove, and an adjustment screw is combined with the screw setting to further restrict the position of the limit rod through the adjustment screw. According to the hydraulic structure for resetting the rear button of the door according to item 1 of the scope of the patent application, wherein the upper section of the side of the first rear button is provided with the sleeve, and the lower section is further provided with a support sleeve, and A fitting space is formed between the sleeve and the supporting sleeve, the sleeve of the second rear button piece is located at the middle section of the side, and the upper and lower ends of the sleeve each form an engaging space, and the hydraulic buffer The outer shaft of the device extends from the closed end to a shaft with a smaller outer diameter, and is fitted with a roller bearing, whereby the sleeve and the support sleeve of the first rear button are relatively engaged. The engaging space of the second rear button is set at the same time as the fitting space is sleeved on the sleeve of the second rear button, and the outer shaft of the hydraulic buffer device is not only the outer diameter of the closed end and the second rear button. The inner diameter of the lower end of the sleeve is engaged with each other by a plurality of longitudinal concave-convex structures, and a roller bearing sleeved by the shaft body is sleeved with the support sleeve of the first rear button piece.