CN205053176U - Hair extending machine - Google Patents

Abstract

The utility model provides a hair receiver, which includes a main board, a clamping assembly, and a transmission pressure plate; There is a first clamping groove on the right side wall, and several installation grooves are opened at the bottom of the sliding groove; the clamping assembly is installed in the sliding groove of the main board, and the push rod of the clamping assembly extends forward with several second clamping bosses , the side wall of the second clamping boss has a second clamping groove, and the return spring leans against the right part of the sliding groove and the push rod; the main board has a moving groove, and the driving pressure plate is installed in the moving groove, and the driving pressure plate A plurality of installation rods are fixed on the lower side of the extension part. Remove the connection between the fixed pin of the hair extension buckle and the C-shaped buckle, match the fixed pin with the installation rod of the transmission pressure plate, place the C-shaped buckle in the clamping chamber, place the real hair in the C-shaped buckle of the hair extension buckle, and drive The transmission pressure plate moves down until the fixing pin fully enters the C-shaped buckle, and the real hair is fixed in the hair extension buckle.

Description

hair receiver

technical field

The utility model relates to a hair receiver.

Background technique

Hair extension is to connect the hair to the user's real hair, and achieve the transformation from short hair to long hair in an instant. The hair extension method currently used is glue or rope winding. Glue hair extension is to apply glue on the real hair by the hairdresser , and then glue the wig to a small amount of real hair, and the rope winding is to manually wind the wig on a small amount of real hair through the hairdresser; however, the above-mentioned methods of gluing or rope winding must rely on manual work by the hairdresser, which requires a lot of work, time-consuming and laborious , fixed effect is poor, and there is not a kind of special tool that can complete the above-mentioned operations in batches on the market.

Utility model content

The technical problem to be solved by the utility model is to provide a hair receiver which is easy to use and has a better hair receiving effect.

In order to solve the above technical problems, the utility model provides a hair receiver, which at least includes a main board, a clamping assembly, and a transmission pressure plate;

There are left and right sliding grooves on the rear end of the main board. The bottom of the sliding groove extends forward and has several first clamping bosses beyond the front end of the main board. The first clamping bosses are distributed at intervals, and the first clamping bosses Arranged in a straight line, the right side wall of the first clamping boss is provided with a first clamping groove, and the bottom of the slide groove is provided with a number of installation grooves that run through the front and rear end faces of the main board, and the installation grooves and the first clamping boss one-to-one correspondence;

The clamping assembly is installed in the sliding groove of the main board. The clamping assembly includes a push rod and a return spring. The push rod extends forward corresponding to the position of the main board installation groove and has a number of second clamping bosses. The second clamping bosses go through the installation The slot corresponds to the first clamping boss one by one, and the side wall of the second clamping boss corresponds to the position of the first clamping groove of the first clamping boss. There is a second clamping groove, and the first clamping groove Combined with the second clamping groove to form a clamping chamber that fits the hair extension buckle, the right end of the return spring abuts against the right part of the slide groove, and the left end of the return spring abuts against the right end of the push rod;

The main board is provided with upward and downward movement grooves, and the transmission pressure plate is installed in the movement groove. The transmission pressure plate extends to the upper side of the main board with an extension, and the lower side of the extension is fixed with several vertical installation rods. The upper side of the groove, and the mounting rods are in one-to-one correspondence with the clamping chambers.

After adopting such a structure, the connection between the fixing pin of the hair extension buckle and the C-shaped buckle is removed, the wig is fixed on the C-shaped buckle, the fixing pin is matched with the installation rod of the transmission pressure plate, the C-shaped buckle is placed in the clamping chamber, and the wig is fixed on the C-shaped buckle. The real hair is placed in the C-shaped buckle of the hair extension buckle, and the driving platen is driven to move down until the fixing pin completely enters the C-shaped buckle, and the real hair is fixed in the hair extension buckle.

The front side of the main board of the hair receiver is fixed with a pinch plate, and the pinch plate has a volume through hole that fits the first clamping boss and the second clamping boss, the first clamping boss of the main board and the pusher The second clamping boss of the rod protrudes from the front side of the pinch plate through the volume through hole, and the front end of the pinch plate extends forward with several first limiting bosses, the first limiting boss is on the upper side of the volume through hole, and the first limiting boss is located on the upper side of the volume through hole. The right side wall of the position boss is provided with a first limit groove, and the first limit groove corresponds to the first clamping groove of the first clamping boss one by one, and the first limit groove The projection of the side wall of the groove on the horizontal plane is on the right side of the projection of the corresponding first clamping groove on the horizontal plane;

The front end of the pinch plate also extends forward with a number of second limiting bosses, the second limiting boss is located at the lower side of the volume through hole, and the right side wall of the second limiting boss is provided with a second limiting groove. The second limiting groove is also in one-to-one correspondence with the first clamping groove of the first clamping boss, and the projection of the side wall of the second limiting groove on the horizontal plane is in the position corresponding to the first clamping groove on the horizontal plane. Projection right.

After adopting such a structure, the hair receiver can be used to directly complete the disassembly and assembly of the C-shaped buckle and the fixed pin. When the connection between the C-shaped buckle and the fixed pin needs to be removed, the first limiting boss can limit the C-shaped buckle. The relative movement of the relative fixed pin; when the fixed pin is loaded into the C-shaped buckle, the second limiting boss can also limit the relative movement of the C-shaped buckle relative to the fixed pin.

There is a chamfer between the front end surface and the right side of the first clamping boss of the hair receiver, there is a chamfer between the front end surface and the left side of the second clamping boss, and the first limit There is a chamfer between the front end of the position boss and the right side, and there is a chamfer between the front end of the second limiting boss and the right side; after adopting such a structure, it is convenient to put the real hair into the C in the buckle.

The lower side of the main board of the hair receiver is hinged with a handle, the middle part of the handle is hinged with the bottom of the main board, and the left part of the handle is hinged with the lower end of the transmission pressure plate; after adopting such a structure, it is convenient to operate.

The hair receiver also includes a hair fixing assembly, the main board is provided with a left-right fixed chute, the middle part of the fixed chute is on the upper side of the first clamping boss, the middle part of the fixed chute is exposed outside the main board, and the fixed chute is connected to the main board. The moving troughs are connected, and the hair fixing components are placed in the fixed chute;

A slider is provided on the rear end surface of the transmission pressure plate, chamfers are provided between the left and right side walls of the slider and the lower end surface of the slider respectively, and the transmission pressure plate is installed in the moving groove of the main board;

The hair fixing assembly includes a shaft, a first fixing block, a second fixing block, a hair fixing spring and a moving block, and the first fixing block, the hair fixing spring, the moving block, and the second fixing block are sequentially set on the shaft from left to right , the positions between the first fixed block and the second fixed block are respectively fixed with the shaft, the moving block and the second fixed block are respectively provided with displacement protrusions, the displacement protrusions of the moving block and the displacement protrusions of the second fixed block extend into the moving slot and cooperate with the left and right end faces of the transmission platen slider respectively.

After adopting such a structure, it can be guaranteed that when the fixing pin of the hair extension buckle enters the C-shaped buckle, the hair fixing component can fix the real hair, preventing the fixing pin from pulling the real hair and causing damage to the user's hair.

The sliding groove of the main board of the hair receiver passes through the moving groove;

There is a waist-shaped hole on the rear end surface of the slider of the transmission pressure plate, and the length direction of the waist-shaped hole is consistent with the direction of the left side wall of the slider;

There is a counterbore on the front end of the push rod corresponding to the waist-shaped hole of the transmission pressure plate. There is also a secondary utilization component on the push rod. The secondary utilization component includes a secondary utilization spring and a connecting rod, and the counterbore of the connecting rod and the push rod Cooperate, the front and rear ends of the connecting rod are respectively provided with convex rings, the secondary utilization spring is set on the connecting rod, the front end of the secondary utilization spring is against the rear end surface of the push rod, and the rear end of the secondary utilization spring is against the rear end surface of the push rod. on the collar at the rear end of the connecting rod.

After the hair extension buckle is used once, the C-shaped buckle will be deformed, and the notch of the C-shaped buckle will be enlarged. After adopting such a structure, the position of the push rod can be controlled to expand the space of the clamping chamber, which can accommodate the deformed hair. The C-shaped buckle makes the hair extension buckle reusable and reduces the cost of use.

Description of drawings

Fig. 1 is the front view of the embodiment of the hair receiver.

Fig. 2 is a sectional view along A-A direction of Fig. 1 .

Fig. 3 is an enlarged view of part B of Fig. 2 .

Figure 4 is a rear view of the embodiment of the hair receiver.

Fig. 5 is a perspective view of the embodiment of the hair receiver.

Fig. 6 is a front view of the driving plate of the embodiment of the hair receiver.

Fig. 7 is a perspective view of the transmission plate of the embodiment of the hair receiver.

Fig. 8 is a perspective view of the main board of the embodiment of the hair receiver.

Fig. 9 is a perspective view of the pinch plate of the embodiment of the hair receiver.

Fig. 10 is a perspective view of the push rod of the embodiment of the hair receiver.

Fig. 11 is a rear view of the driving plate and the hair fixing assembly of the embodiment of the hair receiver.

FIG. 12 is a perspective view of FIG. 11 .

Fig. 13 is a perspective view of the connecting rod of the embodiment of the hair receiver.

Fig. 14 is a front view of the hair extension buckle of the embodiment of the hair receiver.

Fig. 15 is a perspective view of the C-shaped buckle of the embodiment of the hair receiver.

Fig. 16 is a perspective view of the fixing pin of the embodiment of the hair receiver.

detailed description

As shown in Figures 1 to 13

The hair receiver includes a main board 1, a clamping component, a transmission pressure plate, a buckle plate 7, a handle 6, a hair fixing component and a secondary utilization component;

The lower part of the rear end surface of the main board 1 is provided with a left-right sliding groove 1a, the right part of the sliding groove 1a is placed with a block 1b, and the bottom of the sliding groove 1a extends forward and has ten first clamping bosses 1c beyond the front surface of the main board 1 , the ten first clamping bosses 1c are distributed at intervals, the ten first clamping bosses 1c are arranged in a straight line, there is a chamfer between the front end surface and the right side of the first clamping boss 1c, the first clamping boss The right side wall of the boss 1c is provided with a first clamping groove 1d, and the bottom of the sliding groove 1a is provided with ten installation grooves 1e that run through the front and rear end faces of the main board 1, and the installation grooves 1e are connected with the first clamping boss. 1c corresponds to each other, and each installation groove 1e is on the right side of the corresponding first clamping boss 1c;

The main board 1 is provided with an upward and downward moving groove 1f, and the sliding groove 1a of the main board 1 passes through the moving groove 1f;

There is a fixed chute 1g running left and right inside the main board 1, the middle part of the fixed chute 1g is on the upper side of the first clamping boss 1c, and the middle part of the fixed chute 1g corresponds to ten first clamping bosses 1c where the main board 1 is exposed In addition, the fixed chute 1g communicates with the moving groove 1f of the main board 1 .

The clamping assembly is installed in the sliding groove 1a of the main board 1. The clamping assembly includes a push rod 2 and a return spring 3. The push rod 2 extends forward corresponding to the position of the mounting groove 1e of the main board 1 and has ten second clamping bosses 2a. The two clamping bosses 2a pass through the mounting groove 1e and correspond one-to-one with the first clamping boss 1c. There is a chamfer between the front end surface and the left side of the second clamping boss 2a. There is a second clamping groove 2b on the side wall of the table 2a corresponding to the first clamping boss 1c and the first clamping groove 1d; the return spring 3 is arranged in the slide groove 1a, and the right end of the return spring 3 is against the slide groove 1a On the right block 1b, the left end of the return spring 3 abuts against the right end of the push rod 2, and the push rod 2 is under the action of the return spring 3, and the second clamping boss 2a abuts against the first clamping boss 1c, to keep the balance of the push rod 2, the second clamping boss 2a can reciprocate left and right in the installation groove 1e, and the combination of the first clamping groove 1d and the second clamping groove 2b constitutes a hair extension buckle Clamp the chamber.

The transmission press plate is installed in the moving groove 1f, and the transmission press plate includes a drive plate body 4 and a press plate body 5. A slider 4a is arranged on the rear end surface of the transmission plate body 4. The left and right side walls of the slider 4a are respectively connected to the lower end surface of the slider 4a There is a chamfer between them, the driving plate body 4 cooperates with the moving groove 1f of the main board 1, the driving plate body 4 extends to the upper left side of the main board 1 with an extension 4b, and the pressing plate body 5 is installed on the lower side of the extending portion 4b of the driving plate body 4, There are ten vertical installation rods 5a extending from the lower side of the platen body 5, the installation rods 5a are located on the upper side of the sliding groove 1a of the main board 1, and the installation rods 5a correspond to the clamping chambers one by one;

The rear end surface of the slider 4a of the drive plate body 4 is provided with a waist-shaped hole 4c, and the length direction of the waist-shaped hole 4c is consistent with the direction of the left side wall of the slider 4a.

Mainboard 1 lower side is hinged with handle 6, and the middle part of handle 6 is hinged with the bottom of mainboard 1, and the left part of handle 6 is hinged with the transmission plate body 4 lower end of transmission pressing plate.

The front side of the main board 1 is fixed with a pinch plate 7, and the pinch plate 7 has a volume through hole 7a that fits the first clamping boss 1c and the second clamping boss 2a. The first clamping boss of the main board 1 1c and the second clamping boss 2a of the push rod 2 protrude from the front side of the pinch plate 7 through the volume through hole 7a, and the front end of the pinch plate 7 extends forward with ten first limiting bosses 7b. The platform 7b is located on the upper side of the volume through hole 7a, there is a chamfer between the front end surface and the right side of the first limiting boss 7b, and the first limiting groove is opened on the right side wall of the first limiting boss 7b 7c, the first limiting groove 7c corresponds to the first clamping groove 1d of the first clamping boss 1c, and the projection of the side wall of the first limiting groove 7c on the horizontal plane is in the corresponding first The clamping groove 1d is on the right side of the projection on the horizontal plane, that is, the projection position of the first limiting groove 7c on the horizontal plane is slightly to the right compared to the projection position on the horizontal plane of the corresponding first clamping groove 1d;

The front end of the pinch plate 7 also extends forward with ten second limiting bosses 7d, the second limiting bosses 7d are located on the lower side of the volume through hole 7a, between the front end surface and the right side of the second limiting bosses 7d. There is a chamfer, and a second limiting groove 7e is formed on the right side wall of the second limiting boss 7d, and the second limiting groove 7e is also connected with the first clamping of the first clamping boss 1c. The tight grooves 1d correspond one-to-one, and the projection of the side wall of the second limiting groove 7e on the horizontal plane is on the right side of the projection of the first clamping groove 1d on the horizontal plane, that is, the projection position of the second limiting groove 7e on the horizontal plane is the same as that of the second limiting groove 7e. The projected position on the horizontal plane is also slightly to the right than the corresponding first clamping groove 1d.

The hair fixing assembly is placed in the fixed chute 1g, the hair fixing assembly includes a shaft rod 8e, the first fixing block 8a, the second fixing block 8c, the hair fixing spring 8b and the moving block 8d, the first fixing block 8a, the hair fixing spring 8b, The moving block 8d and the second fixed block 8c are sequentially fitted on the shaft 8e from left to right. The first fixed block 8a and the second fixed block 8c are respectively fixed in position with the shaft 8e. Displacement projections 8f are respectively provided on 8c, and the displacement projections 8f of the moving block 8d and the displacement projections 8f of the second fixed block 8c extend into the moving groove 1f and cooperate with the left and right end faces of the transmission platen slider 4a respectively.

The front end of the push rod 2 is provided with a counterbore 2c at the position corresponding to the waist hole 4c of the transmission pressure plate, and the push rod 2 is also provided with a secondary utilization assembly, which includes a secondary utilization spring 9a and a connecting rod 9b, the connecting rod 9b cooperates with the counterbore 2c of the push rod 2, the front and rear ends of the connecting rod 9b are respectively provided with convex rings 9c, the secondary utilization spring 9a is set on the connecting rod 9b, and the front end of the secondary utilization spring 9a is against the push rod 2. On the rear end face, the rear end of the secondary utilization spring 9a abuts against the protruding ring 9c at the rear end of the connecting rod 9b.

As shown in Figures 14 to 16

In order to better understand the working principle of this hair extension device, the structure of the hair extension buckle is introduced here.

The hair extension buckle includes a C-shaped buckle 10 and a fixing pin 11. The outer wall of the C-shaped buckle 10 has a notch 10a communicating with the inner hole. The lower end of the C-shaped buckle 10 is extended with a fixing ring 10b. The wig is connected to the fixing ring 10b. 11 cooperates with the inner hole of the C-shaped buckle 10, the upper side wall of the fixed pin 11 has a limit protrusion 11a that matches the notch 10a of the C-shaped buckle 10, and the upper end of the fixed pin 11 has an assembly hole 11b that fits the installation rod 5a of the transmission pressure plate .

When in use, ten hair extension buckles are respectively installed on ten installation rods 5a of the transmission pressure plate, and each installation rod 5a cooperates with the fixing pin 11 of the hair extension buckle;

Operate the handle 6, and the handle 6 drives the transmission plate body 4 of the transmission pressure plate to move downward, and then drives the hair extension buckle fixed on the pressure plate body 5 to move downward, and the C-shaped buckle 10 of the hair extension buckle and the buckle plate 7 are connected with the first limiter. Because the projected position of the first limiting groove 7c on the horizontal plane is slightly to the right compared to the projected position on the horizontal plane of the corresponding first clamping groove 1d, the mounting rod 5a is tilted to the right, driving the entire hair extension card The buckle deviates a small amount to the right and enters the clamping chamber formed by the first clamping boss 1c of the main board 1 and the second clamping boss 2a of the push rod 2 until the C-shaped buckle 10 of the hair extension buckle completely enters the tightening chamber. The mounting rod 5a returns to the initial vertical state under the action of its own stress;

Send the handle 6 away, the slider 4a of the transmission plate body 4 moves upward under the action of the hair fixing component, and then drives the hair extension buckle to move upward, and the C-shaped buckle 10 of the hair extension buckle abuts against the first limit boss 7b. The lower end surface cannot follow the pressure plate body 5 to move upwards, so that the C-shaped buckle 10 of the hair extension buckle is separated from the fixed pin 11;

Then, place the real hair in the C-shaped buckle 10 of the hair extension buckle, operate the handle 6 again, and the handle 6 drives the transmission plate body 4 of the transmission pressure plate to move downward again, and the hair fixing component cooperates with the slider 4a of the transmission plate body 4 , the displacement protrusion 8f of the moving block 8d and the displacement protrusion 8f of the second fixed block 8c move on the left and right side walls of the slider 4a respectively, because the lower end surface of the slider 4a and the left and right end surfaces are respectively chamfered , the distance between the moving block 8d and the second fixing block 8c will become larger and larger, the fixing spring of the hair fixing assembly will be pressed against the moving block 8d, and the fixing spring will clamp the real hair put into the C-shaped buckle 10 , at the same time, the mounting rod 5a of the transmission pressure plate drives the fixed pin 11 of the hair extension buckle to move downward, and the lower end surface of the C-shaped buckle 10 is against the upper end surface of the second limiting boss 7d, ensuring that the C-shaped buckle 10 will not follow The fixed pin 11 moves together until the fixed pin 11 enters the C-shaped buckle 10 completely, and the hair extension operation of the hair is completed.

In addition, if the hair extension buckle used in the hair extension operation is a secondary use hair extension buckle, there will be a problem that the opening angle of the C-shaped buckle 10 is too large. Under normal circumstances, the C-shaped buckle with an excessively large opening angle 10 is difficult to closely cooperate with the fixed pin 11 again. In the above situation, press the connecting rod 9b of the secondary utilization assembly, and the connecting rod 9b penetrates the push rod 2 and enters the waist-shaped hole 4c of the slider 4a. At the same time of operation, the push rod 2 is pushed to move to the left under the action of the slider 4a, that is, the second clamping groove 2b of the push rod 2 moves to the left, forcing the C-shaped buckle 10 in the clamping chamber to deform under force. , return to the state that can cooperate with the fixed pin 11, and complete the secondary utilization of the hair extension buckle.

What has been described above is only an embodiment of the utility model, and it should be pointed out that for those of ordinary skill in the art, some modifications and improvements can also be made without departing from the principle of the utility model, and these should also be Be deemed to belong to the protection scope of the present utility model.

Claims (6)

1. receiving-transmitting device, is characterized by: at least comprise mainboard, clamp assembly, transmission pressing plate;

Mainboard rear end face has the sliding tray of left and right trend, the some first clamping boss exceeding mainboard front end face are extended with forward bottom sliding tray, some first clamping boss are spaced apart, some first clamping boss are aligned, the right side wall of the first clamping boss has the first clamping recess, have some mounting grooves running through mainboard front/rear end bottom sliding tray, described mounting groove and described first clamps boss one_to_one corresponding;

Clamp assembly is arranged in the sliding tray of mainboard, clamp assembly comprises push rod and back-moving spring, the corresponding mainboard mounting groove position of push rod is extended with forward some second clamping boss, second clamping boss runs through described mounting groove and clamps boss one_to_one corresponding with first, the second corresponding first clamping boss first clamping recess position of clamping boss sidewall has the second clamping recess, first clamping recess and the second clamping recess combine the clamping chamber constituting and agree with sending and receiving buckle, back-moving spring right-hand member is resisted against sliding tray right part, the left end of back-moving spring is resisted against the right part of push rod,

Mainboard has the shifting chute of upper and lower trend, transmission pressing plate is arranged in shifting chute, transmission pressing plate is extended with extension on the upside of mainboard, the mounting rod of some vertical directions is fixed with on the downside of extension, described mounting rod is in the upside of mainboard sliding tray, and described mounting rod and described clamping chamber one_to_one corresponding.

2. receiving-transmitting device according to claim 1, is characterized in that:

Buckle is fixed with on front side of described mainboard, buckle has the volume through hole agreeing with described first clamping boss and described second clamping boss, first clamping boss of mainboard and the second clamping boss of push rod stretch out on front side of buckle through volume through hole, buckle front end face is extended with forward some first positive stop lug boss, first positive stop lug boss is on the upside of volume through hole, the right side wall of the first positive stop lug boss has the first limited impression, described first limited impression and described first clamps the first clamping recess one_to_one corresponding of boss, first limited impression sidewall is in corresponding first clamping recess on horizontal plane projection right side in the projection of horizontal plane,

Buckle front end face is also extended with forward some second positive stop lug boss, second positive stop lug boss is on the downside of volume through hole, the right side wall of the second positive stop lug boss has the second limited impression, described second limited impression also clamps the first clamping recess one_to_one corresponding of boss with described first, the second limited impression sidewall is in corresponding first clamping recess on horizontal plane projection right side in the projection of horizontal plane.

3. receiving-transmitting device according to claim 2, is characterized in that:

Chamfering is had between the front end face of described first clamping boss and right flank, chamfering is had between the front end face of described second clamping boss and left surface, there is chamfering between the front end face of described first positive stop lug boss and right flank, between the front end face of described second positive stop lug boss and right flank, have chamfering.

4. receiving-transmitting device according to claim 1, is characterized in that:

Be hinged with handle on the downside of described mainboard, the middle part of handle and the lower hinge of mainboard, left part and the transmission pressing plate lower end of handle are hinged.

5. receiving-transmitting device according to claim 1, is characterized in that:

Also comprise hair fixation kit, mainboard has the fixing chute of left and right trend, be in the middle part of fixing chute on the upside of described first clamping boss, expose outside mainboard in the middle part of fixing chute, fixing chute communicates with the shifting chute of mainboard, and hair fixation kit is placed in fixing chute;

Transmission pressing back-end face is provided with slide block, and the left and right sidewall of slide block is provided with chamfering respectively and between slide block lower surface, and transmission pressing plate is arranged in the shifting chute of mainboard;

Hair fixation kit comprises axostylus axostyle, the first fixed block, the second fixed block, hair fixing spring and movable block, first fixed block, hair fixing spring, movable block, the second fixed block are sleeved on axostylus axostyle from left to right successively, first fixed block, the second fixed block are fixed position respectively and between axostylus axostyle, movable block and the second fixed block are respectively equipped with displacement projection, and it is interior and coordinate with the left and right end face of transmission pressing plate slide block respectively that the displacement of movable block displacement projection that is protruding and the second fixed block stretches into shifting chute.

6. receiving-transmitting device according to claim 5, is characterized in that:

The sliding tray of mainboard is through shifting chute;

The slide block rear end face of transmission pressing plate has mounting hole, and length direction and the slide block left side wall of mounting hole move towards consistent;

The mounting hole position of the corresponding transmission pressing plate of push rod front end face has counterbore, push rod is also provided with secondary and utilizes assembly, secondary utilizes assembly to comprise secondary and utilizes spring and connecting rod, connecting rod coordinates with the counterbore of push rod, the front and back ends of connecting rod is respectively equipped with bulge loop, secondary utilizes spring housing to be contained on connecting rod, and secondary utilizes the front end of spring to be resisted against on putting back-end face, and secondary utilizes the rear end of spring to be resisted against on the bulge loop of connecting rod rear end.