CN217502221U

CN217502221U - Latch device of gear rack

Info

Publication number: CN217502221U
Application number: CN202123433823.8U
Authority: CN
Inventors: 吴伟强; 马瑞辉; 吴裕富
Original assignee: Guangdong Nbtm New Materials Co ltd
Current assignee: Guangdong Nbtm New Materials Co ltd
Priority date: 2021-12-30
Filing date: 2021-12-30
Publication date: 2022-09-27
Anticipated expiration: 2031-12-30

Abstract

The utility model discloses a gear rack bolt device, which is characterized in that the device comprises a base for placing a gear rack, wherein the gear rack is provided with bolt holes for installing cylindrical pins; the elastic pin is movably connected to the base, the elastic pin is connected with a limiting spring, the limiting spring is located at the bottom end of the base, and the elastic pin can be inserted into the bolt hole; the guide plate is located above the gear carrier and provided with a positioning groove, the base is provided with a positioning pin, the positioning pin can be inserted into the positioning groove, the guide plate is provided with a plurality of guide holes, the positions of the guide holes correspond to the positions of the bolt holes, and the elastic pins can be partially inserted into the guide holes. The bolt of the guide plate transition gear carrier is used, so that the mechanical performance of a product is influenced without additionally increasing a guide section, and the production is facilitated.

Description

Latch device of gear rack

Technical Field

The utility model relates to a powder metallurgy field especially relates to a reach gear carrier bolt device.

Background

The powder metallurgy with pins needs to be realized through an assembly process. The gear rack is produced by a powder metallurgy process, the pin is a steel product, and the gear rack and the pin can be firmly combined together by a press fitting mode and a reasonable fit clearance. For the two assemblies of the gear rack and the pin, a guide section is needed to be arranged for transition before assembly, for example, the guide section is added to an inner hole of the gear rack or the outer diameter of the pin, but the mechanical performance of the product is greatly influenced, and production is not facilitated.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a carrier bolt device can replace the effect of direction section, stability when guaranteeing the carrier bolt.

A carrier pin arrangement according to an embodiment of the first aspect of the invention comprises a base for placing a carrier having pin holes for mounting cylindrical pins; the elastic pin is movably connected to the base, the elastic pin is connected with a limiting spring, the limiting spring is located at the bottom end of the base, and the elastic pin can be inserted into the bolt hole; the guide plate is located above the gear rack and provided with a positioning groove, the base is provided with a positioning pin, the positioning pin can be inserted into the positioning groove, the guide plate is provided with a plurality of guide holes, the positions of the guide holes correspond to the positions of the bolt holes, and the elastic pins can be partially inserted into the guide holes.

According to the utility model discloses carrier bolt device has following beneficial effect at least: for the two assembly parts of the gear rack and the cylindrical pin, the cylindrical pin needs to be pressed into a bolt hole of the gear rack under the action of a punch, a certain transition section is needed to play a role in guiding and limiting, otherwise, the bolt is easy to fail to cause damage to a product. And place the gear frame on the base, place the deflector that has the guiding hole on the gear frame, the guiding hole of deflector corresponds the bolt hole of gear frame, and the bolt hole has worn to establish again and has been connected with the bullet round pin of spacing spring, plays spacing and cushioning effect. Add man-hour insert the cylindric lock in the guiding hole, the butt part stretches into the bullet round pin of guiding hole, the bullet round pin plays supporting role to it, push down by the punch on the machine again, under guiding hole and bullet round pin cooperation, the cylindric lock pushes down along the bullet round pin together, and it is downthehole to impress the bolt, the guiding hole has played the effect of changeover portion, can not influence the mechanical characteristic of two assembly parts under the prerequisite of guaranteeing the bolt success, the easy round pin of bolt process has been reduced and has been placed the unstability and down and cause the probability of pressure equipment incident, and machining efficiency has been promoted.

According to the utility model discloses a some embodiments, the constant head tank the quantity of locating pin all is two at least.

According to some embodiments of the utility model, the base is equipped with transmission hole and spacing hole, the first half of bullet round pin is located in the transmission hole, the second half of bullet round pin is located spacing downthehole.

According to the utility model discloses a some embodiments, peg graft there is the fine setting bolt bottom in spacing hole, fine setting bolted connection in the one end of spacing spring, the other end of spacing spring connect in the bottom of bullet round pin.

According to the utility model discloses a some embodiments, the bottom of base is equipped with the fine setting groove, the spiral shell head of fine setting bolt with fine setting groove adaptation, the height of spiral shell head is not more than the degree of depth in fine setting groove.

According to the utility model discloses a some embodiments, the top of base is equipped with the groove of stepping down, step down the groove with the profile of tooth boss adaptation of carrier, the bullet round pin is located the inward flange in groove of stepping down, the profile of tooth boss can the butt in the bullet round pin.

According to some embodiments of the utility model, the perisporium of deflector is equipped with the instruction chute, instruct the chute to deviate from the direction slope setting of guiding hole.

According to the utility model discloses a some embodiments, the guiding hole the quantity in bolt hole is three, and three the guiding hole the bolt hole all is triangular distribution.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The invention will be further described with reference to the following drawings and examples, in which:

fig. 1 is a cross-sectional view of a carrier latch according to an embodiment of the present invention;

fig. 2 is a top view of a guide plate of the carrier latch mechanism shown in fig. 1.

Reference numerals are as follows: the device comprises a base 100, a spring pin 110, a transmission hole 111, a limiting hole 112, a positioning pin 120, a limiting spring 130, a fine adjustment bolt 140, a fine adjustment groove 150, a yielding groove 160, a guide plate 200, a guide hole 210, a positioning groove 220, an indication inclined groove 230, a cylindrical pin 300, a gear rack 400 and a tooth-shaped boss 410.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the terms such as setting, installing, connecting, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meaning of the terms in the present invention by combining the specific contents of the technical solution.

Referring to fig. 1, a latch device of a gear rack according to the present invention includes a base 100 for placing a gear rack 400, the gear rack 400 having latch holes for receiving cylindrical pins 300; the elastic pin 110 is movably connected to the base 100, the elastic pin 110 is connected with a limiting spring 130, the limiting spring 130 is positioned at the bottom end of the base 100, and the elastic pin 110 can be inserted into the bolt hole; the guide plate 200 is positioned above the gear frame 400, the guide plate 200 has a positioning groove 220, the base 100 is provided with a positioning pin 120, the positioning pin 120 can be inserted into the positioning groove 220, the guide plate 200 is provided with a plurality of guide holes 210, the positions of the guide holes 210 correspond to the positions of the latch holes, and the latch 110 can be partially inserted into the guide holes 210.

For the two assemblies of the gear frame 400 and the cylindrical pin 300, the cylindrical pin 300 needs to be pressed into a bolt hole of the gear frame 400 under the action of a punch, a certain transition section is needed for guiding and limiting, otherwise, the bolt is easy to fail to cause product damage. The gear rack 400 is placed on the base 100, the guide plate 200 with the guide hole 210 is placed on the gear rack 400, the guide hole 210 of the guide plate 200 corresponds to the bolt hole of the gear rack 400, and the bolt hole is penetrated with the elastic pin 110 connected with the limiting spring 130 to play the limiting and buffering functions. Add man-hour insert cylindric lock 300 in the guiding hole 210, butt part stretches into the bullet round pin 110 of guiding hole 210, bullet round pin 110 plays the supporting role to it, push down by the machine upper punch again, under guiding hole 210 and the cooperation of bullet round pin 110, cylindric lock 300 pushes down along bullet round pin 110 together, and it is downthehole to impress the bolt, guiding hole 210 has played the effect of changeover portion, can not influence the mechanical characteristic of two assembly parts under the prerequisite of guaranteeing the bolt is successful, the easy round pin of bolt process is placed the unstability and is down and cause the probability of pressure equipment incident, and machining efficiency has been promoted.

Further, when the pin is inserted, the gear frame 400 is placed on the base 100, the guide plate 200 is placed, the cylindrical pin 300 is inserted into the guide hole 210, and the punch is pressed down to insert the cylindrical pin 300 into the pin hole of the gear frame 400. It should be noted that, for the gear rack 400 with different specifications, the depth requirement of the inserted pin is different, and the punch is pressed down to contact the upper surface of the guide plate 200, and the top surface of the cylindrical pin 300 is flush with the top surface of the guide plate 200, and at this time, the cylindrical pin 300 is located at the limit position and cannot go deep. Therefore, the depth of the guide hole 210 can determine the depth of the cylindrical pin 300 inserted into the gear frame 400, and the depth of the guide hole 210 corresponds to the thickness of the guide plate 200, i.e., the thickness of the guide plate 200 can determine the depth of the inserted pin. The guide plate 200 can play a role in calibration, simplifies the calibration steps during processing, increases the processing efficiency and is beneficial to production.

It should be noted that the number of the positioning grooves 220 and the positioning pins 120 is at least two. It will be appreciated that the single detent pin 120 in cooperation with the detent 220 does not restrict the rotation of the guide plate 200, but only the movement of the guide plate 200. During the bolt inserting process, pressure is generated when the pressure head is pressed down, the guide plate 200 can slightly rotate, the guide holes 210 are staggered with the bolt inserting holes, the cylindrical pins 300 are difficult to press down or the bolts can easily fail, and the gear rack 400 and the cylindrical pins 300 are damaged. The stability of deflector 200 can further be guaranteed to two locating pins 120, the cooperation of constant head tank 220, and then guarantee the stability of bolt, is favorable to improving machining efficiency and processingquality.

Referring to fig. 1, the base 100 is provided with a transmission hole 111 and a limiting hole 112, wherein the upper half of the spring pin 110 is located in the transmission hole 111, and the lower half of the spring pin 110 is located in the limiting hole 112. It is understood that the shape of the elastic pin 110 is narrow at the top and wide at the bottom, and the diameter of the transmission hole 111 is smaller than that of the limiting hole 112. The common press-fitting mode has no limit assembly, and the excessive press-fitting height easily causes overpressure, so that the gear carrier 400 has cracks. The upper portion of the elastic pin 110 is used for better matching with the bolt hole and the guide hole 210 to install the cylindrical pin 300, the small shaft diameter can ensure that the two inserting holes can guide and support the cylindrical pin 300, and the larger shaft diameter of the elastic pin 110 at the lower half portion is used for more conveniently installing a limiting mechanism, maximizing limiting effect and facilitating assembly. The limiting of the clamp is guaranteed, the product damage caused by too much press mounting height is reduced, the machining quality is guaranteed, the waste caused by machining failure is reduced, and the production is facilitated.

Referring to fig. 1, a fine adjustment bolt 140 is inserted into the bottom end of the limiting hole 112, the fine adjustment bolt 140 is connected to one end of the limiting spring 130, and the other end of the limiting spring 130 is connected to the bottom end of the elastic pin 110. The limiting spring 130 is placed in the base 100, the fine tuning bolt 140 is arranged at the bottom of the limiting spring 130 for supporting, the elastic pin 110 is placed at the top of the limiting spring 130, the elastic pin 110 can generate pressure on the limiting spring 130 when stressed, the reset spring generates elastic deformation to generate elastic force, the elastic force counteracts on the elastic pin 110 to form counterforce until the counterforce enables the pressing head to be incapable of continuously pressing down, and therefore the limiting effect is achieved. The fine adjustment bolt 140 can finely adjust the height of the return spring, thereby adjusting the depth of the pin 300.

It should be noted that the bottom end of the base 100 is provided with a fine adjustment groove 150, the head of the fine adjustment bolt 140 is adapted to the fine adjustment groove 150, and the height of the head is not greater than the depth of the fine adjustment groove 150. Therefore, on the premise of realizing fine adjustment of the height of the reset spring, the fine adjustment bolt 140 is ensured not to influence the overall placement stability of the clamp, and the success rate of the bolt process is improved.

Referring to fig. 1, the top end of the base 100 is provided with an abdicating groove 160, the abdicating groove 160 is matched with a tooth-shaped boss 410 of the gear rack 400, the elastic pin 110 is located at the inner edge of the abdicating groove 160, and the tooth-shaped boss 410 can abut against the elastic pin 110. It is understood that the gear frame 400 and the base 100 do not need to be tightly fitted, and the friction surface between the parts needs to be reduced to prevent the unimportant part and the important part from being simultaneously rubbed when the gear frame 400 and the base 100 are moved during the latching process, so that the unimportant part can be left empty after a certain safety distance is reserved in the relief groove 160 to form a clearance position. Thereby reducing wear of the parts and increasing the service life of the gear carrier 400.

Referring to fig. 2, the number of the guide holes 210 and the number of the pin holes are three, and the three guide holes 210 and the pin holes are distributed in a triangular shape. And the circumferential wall of the guide plate 200 is provided with an indication inclined groove 230, and the indication inclined groove 230 is obliquely arranged away from the direction of the guide hole 210. It should be noted that the guiding holes 210 of the guiding plate 200 are distributed in a triangular shape and correspond to the pin holes, while the guiding plate 200 is divided into a front side and a back side, and the back side after being turned 180 degrees around the method cannot correspond to the front side when the guiding holes 210 can correspond to the pin holes on one side. Therefore, the indication chute 230 can visually distinguish the front side and the back side, and can prevent the worker from assembling the rack 400 and the cylindrical pin 300 from being damaged due to the failure of the pin caused by the mistake. Workers do not need time to judge the front and the back of the guide plate 200, and can distinguish the front and the back of the guide plate through the indication chute 230, so that the processing efficiency can be improved in a phase-changing manner, and production is facilitated.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims

1. A carrier latch device, comprising:

the base is used for placing a gear rack, and the gear rack is provided with a bolt hole which is used for installing a cylindrical pin;

the elastic pin is movably connected to the base, the elastic pin is connected with a limiting spring, the limiting spring is located at the bottom end of the base, and the elastic pin can be inserted into the bolt hole;

the guide plate is located above the gear rack and provided with a positioning groove, the base is provided with a positioning pin, the positioning pin can be inserted into the positioning groove, the guide plate is provided with a plurality of guide holes, the positions of the guide holes correspond to the positions of the bolt holes, and the elastic pins can be partially inserted into the guide holes.

2. The carrier latch according to claim 1, wherein the number of the positioning slots and the number of the positioning pins are at least two.

3. The carrier latch according to claim 1 wherein the base defines a drive aperture and a limit aperture, the upper half of the spring pin being located within the drive aperture and the lower half of the spring pin being located within the limit aperture.

4. The carrier latch according to claim 3, wherein a fine adjustment bolt is inserted into a bottom end of the position limiting hole, the fine adjustment bolt is connected to one end of the position limiting spring, and the other end of the position limiting spring is connected to a bottom end of the elastic pin.

5. The carrier latch according to claim 4 wherein the base has a bottom end with a fine adjustment slot, the fine adjustment bolt having a head that fits into the fine adjustment slot, the head having a height that is no greater than the depth of the fine adjustment slot.

6. The carrier latch according to claim 1, wherein the base has a recess at a top end thereof, the recess is adapted to a tooth-shaped protrusion of the carrier, the latch is located at an inner edge of the recess, and the tooth-shaped protrusion can abut against the latch.

7. A carrier plug device according to claim 1, wherein a peripheral wall of the guide plate is provided with an indication inclined groove which is inclined in a direction away from the guide hole.

8. The carrier latch according to claim 1, wherein the number of the guide holes and the number of the latch holes are three, and the three guide holes and the three latch holes are each arranged in a triangular shape.