TWI539098B - Safety valve of shock absorber and its oil separation structure - Google Patents

Description

Safety valve of suspension device and oil passage separation structure thereof

The invention relates to a safety valve structure for oil pressure suspension, in particular to separating the oil chamber path by an oil passage separating the cutting seat, and combining with the safety valve structure, when the suspension device is locked in the shock absorber In the state, when a large impact force is encountered, the temporary buffering effect can be generated to reduce the damage of the components.

The shock absorber is mainly used in the mechanism to receive and block the force when the impact force is received, and then the buffer function of the force is offset; the application range is quite wide, such as machinery, vehicles, furniture, molds or tools, etc. It is the most common use of shock absorbers on vehicles. It is mainly for the impact force transmitted to the wheels and the car body due to road conditions. The shock absorber or suspension device can improve the comfort during riding.

In the case of a bicycle, a shock absorber is often installed on the front fork, the seat tube or the rear fork frame, and the shock absorber at the front fork portion mainly buffers the impact force transmitted from the ground to the front wheel; The shock absorber is used to buffer the impact force transmitted from the frame to the seat tube; the shock absorber disposed between the rear fork frame and the main frame buffers the impact force transmitted from the ground to the rear wheel.

Further analysis of the shock absorbers for bicycle front forks can be classified into "mechanical", "oil pressure" and "oil and gas hybrid" according to their technical applications; among them, "mechanical" shock absorbers refer to their structures. A damper-inducing component, with an elastic member as a buffer for the main impact force, the front fork shock absorber device, such as the "lockable bicycle suspension fork structure" disclosed in the new patent No. 094210952; "oil pressure type" The shock absorber front fork is made by using the oil pressure principle to provide an oil chamber in the front fork. By filling the hydraulic oil and flowing properly in the structure, the buffer effect is generated. Such technical application is as in domestic No. 096215098 The "hydraulic shock absorber for bicycle front fork" disclosed in the new patent; the other type of "pneumatic" shock absorber front fork is provided with an oil chamber and a gas chamber in the structure, and the gas can be compressed. As a buffer of impact force, this technology is disclosed in the "gas spring type shock absorber" disclosed in the Japanese Patent No. 099128655; others are more like "oil pressure and gas" "Hybrid" front fork suspension structure combined with various technologies such as "pressure" and "mechanical and hydraulic pressure".

In addition to the basic effect of cushioning, the bicycle shock absorber front fork of the "hydraulic type" is more laborious for the rider due to the suspension state, and does not require a buffer function under flat road conditions, so the industry has also developed The shock absorber that locks or opens the damping allows the user to switch to the shock state or the non-shock state according to the demand; moreover, the bicycle suspension front fork is provided with an adjusting device to provide the consumer to adjust the damping value. In order to produce different degrees of shock, and have an adjustable effect.

Such a front fork suspension device having an adjustable damping effect, such as the "easy-adjustable front fork shock absorber" disclosed in the Japanese Patent No. 094,216,899, which can be inserted into the inner tube at one end of the outer tube, and the inner tube is inserted outside. A piston having a sliding hole is arranged inside one end of the tube; a hollow tube has one end fixed to the inside of the outer tube, and the other end is formed with a perforation of different apertures, and the tube wall at one end of the large aperture is provided with a radial direction a lower oil hole communicating with the perforation, the end is further provided with a regulating valve which can be positioned in the inner tube, and a top rod can be coupled with the hollow tube through the regulating valve, the plunger is provided with a penetrating oil hole therein; a control rod The system is disposed in the hollow tube, and the upper end and the lower cone are respectively formed at the two ends, and the ring portion is formed at the middle portion, and the ring portion is in the hole with a large hole diameter of the hollow rod, and the elastic member is disposed outside the upper cone head. The elastic member is disposed at an end surface of the ring portion and the ejector pin; an adjusting member is disposed on the outer tube and opposite to the lower cone portion, and is provided with a knob and an actuating member connected to each other, and an end surface of the actuating member is formed Conical top surface, the top and bottom cones abut each other Touch.

The utility model relates to a front fork shock absorber which can adjust the damping value, such as the "regular tube front fork shock absorber" disclosed in the domestic patent No. 094209583, which is provided with an inner and outer tube which are interpenetrated and located in the outer tube. One end of the inner tube is provided with a hollow piston, a regulating tube is disposed in the outer tube and the other end thereof penetrates the piston; the adjusting tube is provided with a hollow tube and a control rod located therein, and the hollow tube is located at one end of the inner tube A spring, a gasket and a regulating valve having a side hole in the axial direction are arranged in sequence, the regulating valve is formed with an upper and a lower oil chamber, and a ejector having an oil hole therein is penetrated through the member and fixed The end of the hollow tube, at which time the gasket is located at a side hole with respect to one end of the piston, and the hollow tube is provided with a lower oil hole communicating with the oil hole in the lower oil chamber, and the other end of the hollow tube penetrates the outer tube and is fixed to each other A control rod is disposed in the hollow tube, and a tapered head is formed at one end of the lower oil hole, and a gap is formed therebetween.

In the above structure, all are shock absorbers with adjustable damping, and the adjustment knobs are all disposed under the front fork; wherein the former is mainly used to rotate the knob to drive the control rod to control the oil hole The size of the orifice is changed to produce a change in the flow rate of the hydraulic oil to achieve the adjustment of the buffer level; the latter is used to rotate the lower knob to drive the control rod to produce a linear displacement to change the size of the orifice of the oil hole, thereby adjusting the damping damping Effectiveness, but such damping adjustments are limited to when the suspension device is in a buffered state.

In the case of relatively flat road conditions and speed requirements, the rider usually switches the suspension device to the locked state in order to reduce the physical energy consumption and to prevent the transmission of the frame from being worn out, that is, the suspension device does not have Buffering efficiency, at this time, if there is a big hole or big stone on the road, it will bounce. When it falls to the ground, it will cause a sudden large impact force to be transmitted to the wheel and the frame, and ride without buffering. It is feared that the spine or the car will be injured by a large bounce, and the impact of the components of the car body may be caused by collision, misalignment or interaction between the components under the large impact force, thereby causing wear and damage of the components, riding. Performance and security are therefore greatly reduced. Therefore, the inventor of the present invention provides a safety valve device, which is capable of temporarily unlocking under a predetermined impact force when the suspension device is locked, thereby generating a temporary buffering effect, thereby protecting the rider and reducing component damage. .

In view of the above, the safety valve and the oil passage separation structure of the shock absorber disclosed in the present invention are disposed between the inner tube and the outer tube which are sleeved and mutually linearly expandable and movable, and include: a base tube And a first component and a second component disposed in the inner tube, forming a main oil chamber in the first component, forming a first between the first component and the second component a sub-oil chamber; an oil passage partition group having an oil passage partition, wherein an open-close group joint groove is recessed, and the open-close group joint groove is connectable to the auxiliary oil chamber, the oil passage is separated The seat is provided with a main flow passage communicating with the main oil chamber, and a sub-flow passage group communicating with the auxiliary oil chamber, and one end of the auxiliary flow passage is connected with the main flow passage, and a safety flow passage group One end is connected to the auxiliary oil chamber, and the other end is connected with each of the opening and closing group connecting groove and the auxiliary flow channel group by a connecting flow channel; an opening and closing switch group is disposed in the opening and closing group In the tank, switching is performed as a flow opening and closing state of the auxiliary flow path group; by using the above-mentioned member, the oil passage partition and safety are utilized Road structural design, when the hoist is switched off switch group such that each of the main passage and the auxiliary flow channel as a group does not flow under the locked state of shock, in When the preset impact pressure exceeds the preset impact pressure, the local hydraulic oil in the main flow passage will flow to the safety flow passage group and enter the auxiliary oil chamber through the communication flow passage, so that the hydraulic oil generates a small flow flow and can immediately release the pressure. It has a short shock absorber buffer state to achieve the effect of safe buffering and immediate pressure relief, which can reduce the damage of components and increase the service life.

The main object of the present invention is to provide a safety valve for a shock absorber and an oil passage separating structure thereof, which has an oil passage partition, combined with a safety flow passage design, when the hydraulic oil in the device is in a bufferless state of no flow. Next, when the preset impact force reduces the volume of the oil chamber, the hydraulic oil can be immediately circulated, so that it has a short-term safety buffer effect.

A second object of the present invention is to provide a safety valve for a shock absorber and an oil passage separation structure thereof, which utilize an oil passage partition to separate the oil passages of the second oil chamber and the safety flow passage, and is applicable to The structural design of the second oil chamber is arranged in parallel, so that the function of separating several flow passages can be achieved at the same time.

A further object of the present invention is to provide a safety valve for a shock absorber and an oil passage separation structure thereof, which are provided as a safety flow passage in a locked state when the suspension device is in a locked state, and the impact pressure reaches a preset value. When the safety flow path is opened, the hydraulic oil flows, and when the impact pressure is less than the preset value, the safety flow path is closed to achieve the effect of immediate pressure relief, thereby reducing the damage of the components.

A further object of the present invention is to provide a safety valve for a shock absorber and an oil passage separation structure thereof, and a safety valve group can be added as a damping value adjustment structure, and the damping value can be adjusted according to requirements, and the impact force exceeding the damping value can be adjusted. The security buffer effect can be activated.

[this invention]

(10) ‧‧‧Aids

(11) ‧ ‧ inner management

(12) ‧ ‧ external management

(20) ‧‧‧Base Group

(21) ‧‧‧ first component

(22)‧‧‧Second components

(23)‧‧‧Main oil room

(24)‧‧‧ Deputy oil room

(25) ‧‧‧ positioning ring

(30)‧‧‧ Oil Separation Group

(31)‧‧‧ Oil Separator

(32) ‧‧‧Opening and closing group slots

(33) ‧ ‧ mainstream channels

(34)‧‧‧Substream channel group

(341) ‧‧‧First secondary channel

(342) ‧‧‧second secondary channel

(35) ‧‧‧ group seats

(36) ‧ ‧ upper cover

(40) ‧‧‧Safe Runner Set

(41) ‧‧‧First safe oil road

(42) ‧‧‧Second safety oil road

(50) ‧‧‧Connected runners

(60)‧‧‧Opening switch group

(61)‧‧‧ switch seats

(62) ‧‧ ‧ Diversion channel

(621)‧‧‧Inlet

(63)‧‧‧Open and close switch

(70)‧‧‧Safety valve group

(71)‧‧‧ Adjusting rod

(72) ‧ ‧ steel balls

(73)‧‧‧Flexible parts

(74)‧‧‧ knob

(80)‧‧‧ bicycle front fork

(81)‧‧‧ Front fork suspension group

(90) ‧‧‧ seat tube

(91)‧‧‧Seat tube suspension group

The first figure is a perspective view of the oil passage partition according to a preferred embodiment of the present invention.

The second figure is a plan view of the oil passage partition according to a preferred embodiment of the present invention.

The third figure is a plan sectional view of the oil passage partition according to a preferred embodiment of the present invention.

The fourth figure is a plan sectional view 2 of the oil passage partition according to a preferred embodiment of the present invention.

Figure 5 is a plan sectional view III of the oil passage partition according to a preferred embodiment of the present invention.

Figure 6 is a perspective exploded view of a preferred embodiment of the present invention.

Figure 7 is a perspective exploded view of a preferred embodiment of the present invention.

Figure 8 is a perspective exploded view of a preferred embodiment of the present invention.

Figure 9 is a plan view of a preferred embodiment of the present invention.

Figure 11 is a plan sectional view of a preferred embodiment of the present invention.

Figure 11 is a plan sectional view of a preferred embodiment of the present invention.

Figure 12 is a plan sectional view III of a preferred embodiment of the present invention.

Figure 13 is a first schematic diagram of a security buffer in accordance with a preferred embodiment of the present invention.

FIG. 14 is a first schematic diagram of a safety buffer according to a preferred embodiment of the present invention.

FIG. 15 is a second schematic diagram of a security buffer according to a preferred embodiment of the present invention.

FIG. 16 is a schematic diagram of the adjustment of the safety buffer damping value according to a preferred embodiment of the present invention.

Figure 17 is a perspective exploded view of another embodiment of the present invention.

First, referring to the first to twelfth drawings, the safety valve and the oil passage dividing structure of the shock absorber provided by the present invention are applied to the bicycle front fork (81), which includes: a shock absorber tube group (10), and a base pipe group (20), an oil passage partition group (30), a safety flow channel group (40), and a communication flow provided in the shock absorber tube group (10) Road (50), an open switch group (60) and a safety valve group (70).

The shock absorber tube set (10) is an inner tube and an outer tube of a bicycle front fork, and has an inner tube (11) and an outer tube (12) which are sleeve-shaped and mutually linearly expandable and movable.

The base pipe set (20) is disposed at a predetermined portion in the inner pipe (11), and has a first component (21) and a second component (22) disposed on each other; and the first component (21) Forming a main oil chamber (23); forming a pair of oil chambers (24) between each of the first and second members (21) (22); the first member (21) may be a tubular body application; The second component (22) can be applied by an oil bladder of an elastic material.

The oil passage partitioning group (30) has a seat-shaped oil passage partition (31); a start-close group joint groove (32) is disposed at a predetermined portion of the oil passage partition (31) Groove, providing the opening and closing switch group (60) a portion of the assembly; a main passage (33) disposed in the preset portion of the oil passage partition (31) to communicate with the main oil chamber (23); a secondary flow passage group (34) disposed at a preset portion in the oil passage partition (31) having a first auxiliary passage (341) and a second secondary passage (342), the first secondary passage (341) having one end connected to the main passage (33) The other end is in communication with a pair of oil chambers (24); one end of the second sub-channel (342) is connected to the opening and closing group (32), and the other end is connected to the sub-oil chamber (24) a set of sockets (35), disposed above the oil passage partition (31), and providing each of the opening and closing switch group (60) and the safety valve group (70) disposed therein; an upper cover ( 36) is disposed above the set of sockets (35), and provides a portion of the open/close switch group (60) and the safety valve group (70) partially disposed therein and partially exposed.

The safety flow channel group (40) is disposed at a predetermined portion in the oil passage partition (31) and is connectable to the auxiliary oil chamber (24); the safety flow channel group (40) is connected to the safety flow channel group (40) a first safety oil passage (41) and a second safety oil passage (42) connected to one of the flow passages (50), wherein the first safety oil passage (41) is connected to the communication passage (50) at one end thereof. The other end is connected to the main oil chamber (23); the second safety oil passage (42) has one end connected to the communication flow passage (50), and the other end is in communication with the auxiliary oil chamber (24).

The connecting flow passage (50) is disposed at a predetermined portion in the oil passage partition (31), and simultaneously connects the first auxiliary passage (341), the opening and closing group connecting groove (32), and the first and the first Second safety oil circuit (41) (42).

The opening and closing switch group (60) is disposed in the opening and closing grouping groove (32) to switch between the opening and closing state of the auxiliary flow path group (34), and when the opening and closing switch group (60) is switched In order to close such that the main passage (33) and the auxiliary flow passage group (34) are in a non-circulating suspension-locking state, the local hydraulic oil in the main passage (33) will pass through the preset impact pressure. The connecting flow passage (50) flows to the safety flow channel group (40) and enters the auxiliary oil chamber (24), so that the hydraulic oil generates a small flow of flow and can immediately release pressure, and has a short shock absorber buffer The switch block (60) has a switch base (61), and a preset portion thereof is disposed in the open/close group slot (32), and another preset portion of the open/close switch group (60) is worn. Each of the oil passage partition (31) and the assembly seat (35) has an end extending toward the outside of the upper cover (36); the switch seat (61) is provided with one of the auxiliary oil chambers (24) a flow guiding passage (62) for guiding hydraulic oil in the connecting flow passage (50) to the auxiliary oil chamber (24), and closing the guiding passage after rotating the preset angle of the switch base (61) ( 62), each of the main oil chamber (23), the auxiliary oil chamber (24) and the oil passage The hydraulic oil circulating in the partition (31) is in a bufferless locking state; the switch seat (61) is exposed at the upper cover (36) and is provided with an opening and closing switch button (63), which can synchronously drive the switch seat (61) generating a rotation to switch the opening and closing state of the flow guiding channel (62); the guiding channel (62) has two guiding holes (621) disposed on the switch seat (61), and the switch is After the seat (61) rotates the preset angle, the guide hole (621) is corresponding to the second auxiliary passage (342), the hydraulic oil may flow between each of the main oil chamber (23), the auxiliary oil chamber (24) and the oil passage partition (31), thereby opening the buffer state; rotating the switch seat (61) After the preset angle, the diversion hole (621) and the second sub-channel (342) are mutually displaced, and each of the main oil chamber (23), the auxiliary oil chamber (24) and the oil passage partition If the hydraulic oil between (31) does not flow, it is locked and buffered.

The safety valve group (70) is disposed at a predetermined portion of the flow path of the safety flow path group (40) to provide an adjustment of a preset value of the hydraulic oil ejector pressure in the safety flow path group (40); The valve block (70) has an adjusting rod (71), one end of which is disposed at a predetermined portion of the oil passage partition (31), and the other end extends toward the outside of the oil passage partition (31); a steel ball (72) is provided The predetermined portion of the safety flow channel group (40) can effectively block the circulation of the hydraulic oil in the safety flow channel group (40); an elastic member (73) is disposed on each of the steel balls (72) and the adjustment rod (71) between the piercing ends; the adjusting rod (71) is disposed through each of the oil passage partitions (31) and the assembly seat (35), and a knob is disposed at a portion of the upper end of the upper cover (36) (74), the adjusting rod (71) can be synchronously driven to generate rotation, and the adjusting rod (71) is linearly displaced in each of the components, and the distance between each of the adjusting rods (71) and the steel ball (72) is adjusted. To adjust the compression elastic value of the elastic member (73).

With the above-mentioned members, the structural design of the oil passage partition (31) and the safety flow passage group (40) is utilized, and the opening and closing switch group (60) is switched to be closed so that each of the main flow passages (33) and the auxiliary circulation The road group (34) is in a non-circulating suspension lock state, and the partial hydraulic oil in the main flow passage (33) will flow to the safety flow passage through the communication flow passage (50) when the preset impact pressure is exceeded. Group (40) and entering the auxiliary oil chamber (24), so that the hydraulic oil generates a small flow of flow and can immediately release pressure, and has a short shock absorber buffer state to achieve the effect of safe buffering and immediate pressure relief, and further It can reduce the damage of components and increase the service life.

In order to further understand the structural features, technical means and desired effects of the present invention, the manner of use of the present invention will be described as follows: For the oil passage partition (31) of the present invention, please refer to the first to fifth figures. Forming each of the opening and closing group receiving groove (32), the main flow channel (33), the first and second auxiliary passages (341) (342), and the first and second safety oil passages (41) (42) And connecting the flow passages (50), and forming a position and a spatial configuration between the members; wherein the first and second secondary flow passages (341) (342) are in communication, the first secondary passage (341) and the The main channel (33) is in communication, the opening and closing group slot (32) is in communication with the second sub-channel (342), and the first and second safety oil passages (41) (42) are connected to each other. A safety oil passage (41) is in communication with the communication flow passage (50), the communication flow passage (50) and each of the first auxiliary passages (341), the opening and closing group coupling groove (32), and safety The flow channel group (40) is connected.

The present invention is disposed at the position of the bicycle front fork (80). Please refer to the sixth to the tenth drawings, which are the suspension tube groups composed of the inner tube (11) and the outer tube (12) which are mutually sleeved. (10) A front fork suspension group (81) is installed therein, and the base pipe group (20) is disposed above the front fork suspension group (81). When the invention is assembled, the second component (22) is first fixed to the outside of the first component (21); then the switch socket (61) is assembled to the opening and closing group slot (32); Each of the steel ball (72), the elastic member (73) and the adjusting rod (71) are sequentially disposed in the first safety oil passage (41); and then each of the oil passage partitions (31) in the assembled state, The group connector (35), the switch seat (61) and the safety valve group (70) are disposed in the first component (21); and the set of the connector (35) and the upper cover (36) are sequentially disposed in the group The oil passage partition (31), at which time the extending ends of the adjusting rods (71) and the switch seats (61) are exposed to the upper cover (36); the knobs (74) are connected to the upper covers ( 36) and the set between the seat (35), and one end of the upper cover (36) is exposed and exposed outside the upper cover (36); the opening and closing switch button (63) is connected to the switch seat (61) The exposed end portion; finally, the aforementioned component is fixed in the first component (21) by a positioning ring (25), that is, the assembly is completed.

In the buffer state, the switching between the opening and closing in the buffer state, referring to the tenth to eleventh views, when the opening and closing switching button (63) is rotated in the ON state, the switch base (61) is synchronously driven to rotate. The diversion hole (621) corresponds to the second sub-channel (342), and the hydraulic oil in each of the main oil chamber (23), the auxiliary oil chamber (24) and the oil passage partition group (30) flows; The impact force is caused to compress the space in the first component (21), and the hydraulic oil enters the main channel (33) from the main oil chamber (23), sequentially passes through the first sub-channel (341), and communicates The flow passage (50), because the first safety oil passage (41) is blocked by the safety valve group (70), the hydraulic oil enters the opening and closing group coupling groove (32), and then passes through the switch seat (61). After the respective guiding channels (62) and the guiding holes (621) are disposed, the second auxiliary channel (342) flows into the second sub-channel (342), and finally flows through the first component (21) to the auxiliary oil chamber (24). ). When the impact force disappears and the space in the first element (21) returns to the original volume, the hydraulic oil starts to flow back, and the auxiliary oil chamber (24) passes through the first element (21) to the second pair. The channel (342), after passing through each of the guiding channel (62) and the guiding hole (621) disposed on the switch seat (61), exits the opening and closing group slot (32) and enters the connecting channel (50), after sequentially flowing through each of the first sub-channel (341) and the main channel (33), and finally entering the main oil chamber (23).

When the opening/closing switch (63) is rotated in the OFF state, the switch base (61) is synchronously driven to rotate, and the flow guiding hole (621) and the second auxiliary passage (342) are mutually displaced, respectively. The The hydraulic oil in the main oil chamber (23), the auxiliary oil chamber (24) and the oil passage partition group (30) is in a non-flowing state, and the buffering function is locked.

The safety buffering operation of the present invention is when the opening and closing switching button (63) is switched to OFF, please refer to the thirteenth to fifteenth figures, and the first component is encountered when a large impact force exceeding a preset value is encountered. (21) The space inside is compressed, the hydraulic oil has two paths for circulation, and one path is such that hydraulic oil enters the main passage (33) from the main oil chamber (23), and sequentially passes through the first pair. The passage (341) and the connecting flow passage (50) are blocked by the oil passage of the opening and closing group connecting groove (32) flowing to the second auxiliary passage (342), so that the hydraulic oil flows into the first safety oil passage (41). After the steel ball (72) is opened, the second safety oil passage (42) is entered, and finally passes through the first component (21) to the auxiliary oil chamber (24); the second path makes the hydraulic oil The first safety oil passage (41) penetrating from the main oil chamber (23) passes through the first component after the steel ball (72) is opened and flows to the second safety oil passage (42). And flow to the auxiliary oil chamber (24).

Even when the opening and closing switching button (63) is switched to the buffered open state when the switch is turned ON, when a large impact force is encountered, the hydraulic oil can be circulated after the steel ball (72) is pushed open by the above two paths. To the auxiliary oil chamber (24), the path of increasing the flow of hydraulic oil can achieve better buffering efficiency.

In the invention, when the impact force setting value of the safety buffer activation is adjusted, the knob (74) is rotated to adjust the compression elastic force of the elastic member (73), please refer to the sixteenth diagram, and the knob (74) can be rotated to synchronously drive the The adjusting rod (71) generates a linear displacement. When the adjusting rod (71) is displaced upward to pull the distance D of the elastic member (73) apart, the elastic member (73) has a small compressive elasticity, and the elastic rod (73) is small. The hydraulic oil of the main oil chamber (23) can push the steel ball (72) with a small force to generate a buffer, which is a value set at a lower impact force to generate a safety buffer function; when the adjustment rod (71) When the displacement D is downward and the distance D for accommodating the elastic member (73) becomes small, the elastic force of the elastic member (73) is large, so that the hydraulic oil from the main oil chamber (23) must have a large force. The steel ball (72) is pushed open to generate a cushioning, which is set to a value higher in impact force to generate a safe cushioning function.

The invention has the oil passage partition (31) capable of appropriately separating the hydraulic oil path, and the main passage (33), the auxiliary flow passage group (34) and the safety flow passage group (40) are provided therein to provide The hydraulic oil flows to each of the main oil chambers (23) or the auxiliary oil chambers (24) in a set state, and has the functions of integrating hydraulic oil and split hydraulic oil; on the other hand, the oil passage partition (31) In addition to the structure in which the main oil chamber (23) and the auxiliary oil chamber (24) are arranged perpendicular to each other, it is also applicable to each of the main oils. Since the chamber (23) and the sub-oil chamber (24) are arranged in parallel with each other, they have a compatibility effect.

The oil passage partitioning group (30) of the present invention is combined with the design of the safety flow passage (40). When the buffer is locked, when the device encounters a large impact force, the steel ball can be pushed by the hydraulic oil (72). The safety flow path group (40) is in a flow state, and the steel ball (72) automatically returns to block the safety flow path group (40) to return to a non-circulating state until the impact force disappears, so the present invention has a short-lived state. At the same time, the present invention can greatly reduce the impact force due to the temporary valve buffer (70) and the safety flow channel (40), thereby reducing the collision and misalignment of the related components. Or the damage caused by the influence of the action between components, etc., can increase the service life of each component.

The safety valve group (70) of the invention has an adjustable function, and the knob (74) can be adjusted to adjust the compressive elastic force of the elastic member (73), that is, the hydraulic oil can be adjusted to break the impact of the steel ball (72). For the force value, the user can adjust the damping value according to the demand, and the safety buffer effect can be activated when the impact force of the damping value is exceeded.

Please refer to the seventeenth figure, which is another embodiment of the present invention, which is applied to the seat tube (90) of the bicycle, wherein the seat tube is the suspension tube set (10) of the present invention. The inner tube (11) and the outer tube (12) are also sleeved and mutually linearly expandable, and a tube suspension group (91) is installed in the suspension tube group (10). The base pipe group (20) is disposed above the seat pipe suspension group (91), and the oil passage partition group (30), the safety flow channel group (40), and the communication are disposed in the base pipe group (20). Each component such as the flow path (50), the opening and closing switch group (60), and the safety valve group (70).

The other assembly modes, the oil flow and the operating state of the embodiment, and the expected effects are all identical to the previous embodiments. In addition, the present invention can be applied to the front fork and the seat tube of the bicycle, and can also be used in the suspension system of the locomotive and the automobile, or in various mechanical or device structures, and can achieve the functions as described above.

In summary, the "safety valve of the suspension device and the oil passage separation structure thereof" disclosed in the present invention provide a safety structure that can be temporarily switched to a cushioning state in the locked buffer state, so as to be affected by a large impact force. The safety buffer structure utilizes the design of each of the oil passage partitions and the safety flow passages to provide hydraulic oil when the hydraulic oil volume is reduced in a predetermined impact force when the hydraulic oil in the device is in a buffer-free state. The oil passage that can be circulated immediately has a short-term safety buffer effect, and at the same time, the safety valve group is provided with a structure for adjusting the damping value, and the resistance can be adjusted according to requirements. When the value exceeds the impact force of the damping value, the safety buffer function can be activated, so that the wear and damage caused by the large impact between the components can be reduced, thereby increasing the service life and being applicable to various industries. Compatibility, and the result is a practically high shock-absorbing structure, which makes the whole industry practical and cost-effective, and its structure has not been seen in books or public use, and it is in line with the requirements of invention patent applications. Mingjian, granting patents as soon as possible, is a prayer.

It is to be understood that the above is a specific embodiment of the present invention and the technical principles applied thereto, and the functional effects produced by the concept of the present invention are still beyond the spirit of the specification and drawings. In the meantime, it should be combined with Chen Ming within the scope of the present invention.

(31)‧‧‧ Oil Separator

(32) ‧‧‧Opening and closing group slots

(341) ‧‧‧First secondary channel

(342) ‧‧‧second secondary channel

(40) ‧‧‧Safe Runner Set

(41) ‧‧‧First safe oil road

(42) ‧‧‧Second safety oil road

(50) ‧‧‧Connected runners

Claims (11)

The oil path separating structure of the shock absorber comprises: an oil passage partition seat, which is in the form of a seat; a joint opening and closing joint groove is provided in a groove of a predetermined portion of the oil passage partition seat to provide a start a portion of the closed switch assembly; a main passage disposed in the preset portion of the oil passage partition and communicating with a main oil chamber; a pair of flow passage groups disposed at a predetermined portion in the oil passage partition The first sub-channel has a first sub-channel and a second sub-channel. The first sub-channel has one end connected to the main channel, and the other end is connected to a pair of oil chambers. One end of the second sub-channel is connected to the opening and closing. The group is connected to the tank, and the other end is connected with the auxiliary oil chamber; a safety flow channel group is disposed at a predetermined portion in the oil passage partition, and has a safety flow passage connected to the auxiliary oil chamber; The flow passage is disposed at a predetermined portion in the oil passage partition, and simultaneously connects the first auxiliary passage, the opening and closing group joint groove and the safety flow passage. The oil passage separation structure of the shock absorber according to claim 1, wherein the safety flow passage group has a first safety oil passage and a second safety oil passage connected to the communication flow passage, the first The safety oil passage has one end connected to the communication flow passage and the other end connected to the main oil chamber; the second safety oil passage has one end connected to the communication flow passage, and the other end communicates with the auxiliary oil chamber. A safety valve structure of a shock absorber comprises: a suspension tube set having a sleeve shape and mutually linearly extending and contracting one inner tube and one outer tube; and a base tube set disposed on the inner tube a preset portion having a first component and a second component interposed therebetween, a main oil chamber is formed in the first component, and a pair of oil chambers are formed between each of the first and second components; An oil passage partitioning group has an oil passage partition seat, and a starting and closing group connecting groove is recessed in the preset portion, and the opening and closing group connecting groove system is connected to the auxiliary oil chamber, and the oil passage partition seat is arranged a main flow passage connected to the main oil chamber, and a sub-flow passage group connected to the auxiliary oil chamber, and one end of the auxiliary flow passage communicates with the main flow passage, and a safety flow passage group One end is connected to the auxiliary oil chamber, and the other end is connected with each of the opening and closing group connecting groove and the auxiliary flow channel group by a connecting flow channel; an opening and closing switch group is disposed in the opening and closing group groove As the flow of the secondary runner group Closed state switching, when the open/close switch group is switched to be off so that each of the main flow channel and the auxiliary flow channel group is in a non-circulating suspension lock state, the local hydraulic oil in the main flow channel when the preset impact pressure is exceeded Through the connecting flow passage, the safety flow channel group is flown into the auxiliary oil passage chamber, so that the hydraulic oil generates a small flow of the flow, and the pressure can be immediately released, and the shock absorber is temporarily shocked. The safety valve structure of the suspension device according to claim 3, wherein the secondary flow channel group has a first secondary channel and at least a second secondary channel, and the first secondary channel has one end connected to the main channel The other end is connected to an auxiliary oil chamber, one end of which is connected to the opening and closing group connecting groove, and the other end is connected to the auxiliary oil chamber; the connecting flow channel is simultaneously connected to each of the first auxiliary pairs Channel, opening and closing group slot and safety runner group. The safety valve structure of the shock absorber according to claim 3, wherein the safety flow passage group is provided with a safety valve group at a predetermined portion of the circulation path to provide a hydraulic oil ejector pressure preset in the safety flow passage group The adjustment of the value; the safety valve group has an adjustment rod, one end of which is disposed at a predetermined portion of the oil passage partition, and the other end extends toward the outside of the oil passage partition; a steel ball is disposed at a predetermined portion of the safety flow passage group The utility model can effectively block the circulation of the hydraulic oil in the safety flow channel group; an elastic member is disposed between each of the steel balls and the piercing end of the adjusting rod; and a portion of the adjusting rod exposed to the oil passage partition is provided with a The knob can synchronously drive the adjusting rod to generate rotation, and at the same time, the adjusting rod generates a linear displacement in the oil passage partition, and adjust the distance between each adjusting rod and the steel ball to adjust the compressive elastic value of the elastic member. The safety valve structure of the shock absorber according to claim 3, wherein the first component is a tubular body application; the second component is an oil bladder application of an elastic material. The safety valve structure of the shock absorber according to claim 3, wherein the safety flow channel group has a first safety oil passage and a second safety oil passage connected to the communication flow passage, the first safety The oil passage has one end connected to the communication passage, and the other end communicates with the main oil chamber; the second safety oil passage has one end connected to the communication flow passage, and the other end communicates with the auxiliary oil chamber. The safety valve structure of the shock absorber according to claim 3, wherein the safety flow passage group is provided with a safety valve group at a predetermined portion of the circulation path to provide a hydraulic oil ejector pressure preset in the safety flow passage group The adjustment of the value; the oil passage partition group has a set of sockets disposed above the oil passage partition seat, and each of the opening and closing switch group and the safety valve group is provided therein. The safety valve structure of the shock absorber according to claim 8 , wherein the oil passage partition group has an upper cover, is disposed above the set of the base, and provides each of the open switch groups and The safety valve group is partially assembled with its inner and partial exposed parts. The safety valve structure of the shock absorber according to claim 3, wherein the opening and closing switch group has a switch seat, the preset portion is disposed in the opening and closing group slot, and the other predetermined portion is facing The oil passage partition extends outside; the switch seat is provided with a flow guiding passage leading to the auxiliary oil chamber, and the hydraulic oil in the connecting flow passage can be guided to the auxiliary oil chamber to rotate the switch seat preset After the angle, the flow guiding channel can be closed, so that the hydraulic oil in each of the main oil chamber, the auxiliary oil chamber and the oil passage partition group is in a buffer-free locking state; the switch seat is exposed at a portion of the oil passage partition There is an opening and closing switch button, which can synchronously drive the switch seat to generate rotation to switch the opening and closing state of the flow guiding channel. The safety valve structure of the shock absorber according to claim 10, wherein the auxiliary flow passage group has at least one second auxiliary passage, one end of which is connected to the opening and closing group connecting groove, and the other end is connected to the auxiliary oil The flow guiding channel has at least one guiding hole disposed on the switch seat, and after the switch seat rotates by a predetermined angle, the guiding hole corresponds to the second auxiliary channel, and the hydraulic oil can generate a flow , the buffer state is opened; after the switch seat is rotated at a preset angle, the diversion hole and the second sub-channel are mutually displaced, and the hydraulic oil does not flow, and the lock is buffered.