42results about How to "Prevent free sliding" patented technology

The present invention provides a reverse opening type slide fastener in which an upper slider and a lower slider can be held at a bottom end of a box pin when an insert pin is pulled out of the upper slider and the lower slider and separated therefrom. The reverse opening type slide fastener (10) has a separable bottom end stop (22) including a box pin (40) provided consecutively from a bottom end of a right element row (13) disposed on a side edge of a right fastener stringer (17), an insert pin (30) provided consecutively from the bottom end of a left element row (12) disposed on a side edge of a left fastener stringer (16), an upper slider (50) which enables the slide fastener to be opened upward and a lower slider (60) which enables the slide fastener to be opened in a reverse direction. A stopper (46) for preventing the lower slider (60) from slipping off is provided at the bottom end of the box pin (40). A first engaging portion (44) is formed on an opposite side edge opposite to the insert pin (30) of the box pin (40) and a second engaging portion (34) is formed on an opposite side edge opposite to the box pin (40) of the insert pin (30) so as to position the insert pin (30) in a downward direction when the second engaging portion engages the first engaging portion (44). A projecting portion (48) which makes contact with the inner face of the blade of the upper slider (50) so as to suppress a free sliding of the upper slider (50) is formed on at least any one of a front side face and a rear side face opposite to the inner face of the blade of the upper slider (50) of the box pin (40).

The present invention provides a separable fitting (1) in which a box pin (20, 20') has a box pin body (21, 21'), a first cutout (23, 23') for receiving the head end of a locking pawl (36) of a reverse opening slider (30), and a projection (24, 24') projecting toward an insert pin (10) in the direction of the tape width from a surface (26) opposed to the insert pin (10). A side wall surface (23b) of the first cutout (23, 23') and that end surface (24a) of the projection (24, 24') which is provided to the head end side of the box pin are formed flush with each other to form a locking surface (27) with which the head end of the locking pawl (36) makes contact to lock the reverse opening slider (30). The box pin body (21, 21') and the projection (24, 24') have a slope surface (28, 28') declined from the position of the locking surface (27) toward an element row (5). The construction enhances easiness of operation of the reverse opening slider (30) and reliably prevents the reverse opening slider (30) from freely sliding from the box pin-side end of the element row without being slid by human force.

The invention relates to the technical field of the installation of decoration strips on a glass window, in particular to a middle insert part which is used for installing bright decoration strips onto cladding edges of an automobile glass, and a glass window comprising the bright decoration strips, the middle insert part and cladding edges, and further relates to a method for installing the bright decoration strips onto the cladding edge of the automobile glass through the middle insert part. The middle insert part comprises a base and two fixed blocks, wherein the top end of each of the two fixed blocks is provided with an inclined part. Meanwhile, the invention further provides the glass window comprising the middle insert part. The middle insert part provided by the invention is simple in structure, so that the complexity degree can be reduced, and the labor cost can be reduced; material selectivity is large, so that the assembly cost can be reduced; the abnormal sound of the bright decoration strips can be eliminated in the manner that a plastic material is adopted or a layer of elastic material is arranged on the surface of each inclined part, so that the assembly efficiency and the use comfortable level can be improved; and a fixed part is arranged to prevent the bright decoration strips from freely sliding on the cladding edge, so that the installing precision of the bright decoration strip on the cladding edge can be guaranteed.

The invention discloses an improved latch needle which comprises a needle head, a needle neck, a needle body and a needle butt, wherein the needle head includes a beard and a latch. On an a side of the latch needle, a pore is arranged on the needle neck in a direction in which the needle neck faces the needle head, the small end of a first spring piece is inserted in the pore, and the other end of the first spring piece is fixed on the needle body. On a b side of the latch needle, an elongated groove is milled in the middle of the needle body, a second spring piece is disposed in the groove, one end of the second spring piece, which faces the needle butt, is inserted in the groove, and the other end of the second spring piece is fixed in the groove. According to the improved latch needle, contact areas between the spring pieces and needle grooves are enlarged, the latch needle is enabled to work in the needle grooves more stably by means of tension of the spring pieces, knitting accuracy is guaranteed, durability of the spring pieces is improved, and the needle butt of the latch needle is not needed to be processed to be arc-shaped any more.

The invention discloses an automatically anchoring unfreezing device for a flame cutting device of cable transmission so that anchoring, ignition and unfreezing of a down-hole working device are effectively and continuously achieved. The automatically anchoring unfreezing device for the flame cutting device of the cable transmission comprises first-level main load powder, delay load powder, second-level main load powder, a pressure release hole which is stopped by a pressure release piston, a sliding block, a piston rod, a support cylinder which is sleeved outside the piston rod and a bump sparking device which is connected with the lower end of the support cylinder. The support cylinder is pushed by gas produced by burning of the first-level main load powder to move upward, then the sliding block is pushed by the support cylinder to move upward to be clamped on a construction pipe wall, and the anchoring of the device is achieved, meanwhile, the bump sparking device is driven by the support cylinder to move upward and sparks after being bumped by the piston rod, at the moment, the delay powder starts to burn, pressure in the device keeps unchanged, the ignition of the bump sparking device to the flame cutting device is completed, then the second-level main load powder starts to burn, the pressure in the device rises, outleakage happens in the pressure release hole stopped by the pressure release piston, the gas is released out of the pressure release hole, the pressure in the device falls and the unfreezing of the device is achieved after the sliding block falls back.

Disclosed are a middle insert (1) for mounting a light decoration strip (2) on a seal (3) of automobile glass, and a glass window containing the middle insert (1), the light decoration strip (2) and the seal (3), wherein the middle insert (1) comprises a first end part (11), a second end part (12), and a connecting part (13) used for connecting the first end part (11) and the second end part (12). The first end part (11) is provided with a first opening (14), the second end part (12) is provided with a second opening (15), and the first opening (14) and the second opening (15) respectively face the outsides of the end parts thereof. The middle insert (1) is simple in structure such that both complexity and labor costs are reduced. By arranging bulges (32) on the seal (3), the clamping intensity of the light decoration strip (2) is enhanced, so that it is guaranteed that the light decoration strip (2) is difficult to loosen, release or remove; and by arranging a binding groove (6) and a binding material (61) or a double-sided tape (5) on the seal (3), the light decoration strip (2) is prevented from freely sliding on the seal (3), thereby guaranteeing the installation accuracy of the light decoration strip (2) at the edge and avoiding abnormal noise.

The invention discloses a passive self-locking bracket, which comprises a bracket body. The middle part of the bracket body is sunken downward to form an archwire slot. A locking piece is arranged above the archwire slot to slide and fit with the bracket body. One of the bracket body and the locking piece is provided with at least one locking position, and one of the bracket body and the locking piece is provided with a fixing mechanism for fixing the locking piece at the locking position. The elastic piece on one of the groove body and the locking piece, the elastic piece has a protrusion that can be received by the locking position, when the locking piece is in the locked state, the protrusion on the elastic piece is locked Stop reception, when the locking piece is in the open state, the protruding end of the elastic member is in close contact with one of the bracket body and the locking piece, forcing the elastic member to contract and store energy . The invention has the advantage of being convenient for arch wire installation.

The invention relates to an unbonded prestress tendon controllable anchor sectioning device and an assembling method and application of the unbonded prestress tendon controllable anchor sectioning device, belonging to the field of application of prestress concrete structures. The unbonded prestress tendon controllable anchor sectioning device comprises a bidirectional anchor cup, left clamping pieces, a left threaded casing pipe, a right threaded casing pipe, an outer threaded casing pipe and right clamping pieces, wherein a through hole is formed in the axis part of the bidirectional anchor cup in the length direction; a vertical hole is formed in the upper part of the bidirectional anchor cup; the left (right) clamping pieces are 2-3 conical clamping pieces, and the tail parts of the left (right) clamping pieces are provided with oblique opened lug plates, and the oblique directions of the oblique opened lug plates are opposite to the conical direction of a left conical hole; the left (right) threaded casing pipes can be connected with the oblique opened lug plates at the tail parts of the left clamping pieces and the right clamping pieces; the outer threaded casing pipe is connected with the left threaded casing pipe and the right threaded casing pipe. The aim of sectioning a multi-span continuous prestress beam by changing the operation state of the controllable anchor sectioning device can be achieved, and further the aims of reducing the prestress loss, preventing an anchor from affecting the full span and the mutual influences on each span can be achieved.

The invention relates to a controllable segmental anchorage device for unbonded tendons as well as an assembly method and application thereof and belongs to the field of prestressed concrete structure application. The controllable segmental anchorage device comprises a bidirectional anchor cup, left clamping pieces, a spring, an inhaul cable and right clamping pieces, wherein a through hole is reserved in the axis of the long direction of the bidirectional anchor cup, and a vertical hole is formed in the upper part of the bidirectional anchor cup; the left (right) clamping pieces are 2-3 conical clamping pieces, an oblique perforated ear plate is arranged on the tail part of each left (right) clamping piece, and the inclined direction of the oblique perforated ear plates is opposite to the conical direction of a left conical hole; the spring is connected to the oblique perforated ear plates at the tail parts of the left clamping pieces and the right clamping pieces; the inhaul cable penetrates through the spring, and two ends of the inhaul cable penetrate through the vertical hole of the bidirectional anchor cup; through changing the working condition of the controllable segmental anchorage device, the purpose of segmenting multi-span continuous prestressed girders is realized, so that the purposes of reducing the prestress loss and avoiding the influence on the full span and the mutual influence between the spans are achieved.

The invention relates to a high-pressure water pump impeller molding system, which includes a mounting base plate, a support column, a positioning mechanism and a cleaning mechanism. Manually align with the lower box, and then use the clamping tool to clamp and position it. During this period, due to the size difference of the casting box, it is difficult to carry out stable and effective clamping and positioning operations for it, and because the casting mouth The inclination angle and diameter are not the same, it is difficult to completely remove the residual casting fluid in the casting mouth by manual work, and the depth of the casting mouth will also affect the cleaning operation to a certain extent, it is difficult to manually judge whether the inner wall of the casting mouth is completely cleaned , Reduce the work efficiency of high-pressure water pump accessories molding operations and other issues.

The present invention relates to the technical field of punch waste treatment, in particular to a punch waste cleaning device, which includes a device housing, a punch body, a punch seat, a chip removal structure, a drive structure, a cleaning structure, a lubrication structure and a collection structure; The chip removal structure can clean the surface of the stamping seat in one direction, avoiding the impact of dust on the stamping, and at the same time, the dust can only be swept away from one side, and the drive structure can make the chip removal structure cooperate with the body of the stamping device to avoid damage to the stamping process Cause interference, through the collection structure, the swept dust can be collected intensively, and at the same time, the collected waste will not accumulate. Through the cleaning structure, the surface of the plate to be processed can be quickly cleaned to avoid impurities on the surface of the plate. Through the lubrication structure After cleaning, the plate can be oiled and lubricated to improve the stamping effect.

The film supply device comprises a conveying mechanism and a film supply mechanism, the film supply mechanism is arranged above the conveying mechanism and used for supplying films to packaging cups on the conveying mechanism, the film supply mechanism comprises a mounting support and a mounting plate used for containing sealing films, and the mounting plate is slidably connected to the mounting support; the mounting plate is provided with a working position for supplying a film to the packaging cup and a film adding position for adding a sealing film to the mounting plate, and the mounting plate transversely slides relative to the mounting support so as to be switched between the working position and the film adding position. The film supply mechanism is arranged to be the mounting bracket and the mounting plate which are in sliding connection, when the sealing film on the mounting plate needs to be supplemented and added, the mounting plate is partially pulled out of the mounting bracket, and an operator only needs to stand on the side part of the film supply device in the whole sealing film adding process, so that the sealing film is completely added. And the body does not need to stretch into a narrow film supply device for adding, so that the operation is more comfortable, and the use experience of an operator is improved.