inventa

A door stopper comprising a door stopper head; the door stopper head is configured to be an arc shape, one end of the door stopper head is connected to a door stopper body used for stopping a door body, a spherical groove is formed in the door stopper head, and an anti-slip ball is arranged in the spherical groove; when in use, the anti-slip ball is in contact with the ground such that the anti-slip effect is achieved; friction is produced between the anti-slip ball and the spherical groove, and the anti-slip ball stops rotating; friction is also produced between the anti-slip ball and the ground for stopping the door; the surface of the anti-slip ball is provided with an anti-static material, so that the problem relating to easy absorption of dust and debris is solved and the dirt resistance is significantly enhanced.

A NAD(P) modification method, comprising: S1: using Br-(CH₂)_x-NH₂·HBr to react with NAD(P), thereby obtaining N¹-(x-(CH₂)_xNH₂)-NAD(P)⁺; and S2: performing rearrangement reaction on N¹-(x-(CH₂)_xNH₂)-NAD(P)⁺, thereby obtaining N⁶-(x-(CH₂)_xNH₂)-NAD(P)⁺, wherein x=2-6. The present invention also provides a NAD(P) immobilization method and a continuous analysis sensor. The method is environmentally friendly and harmless. By means of adding an amino group to NAD(P), effective immobilization of NAD(P) is achieved, so that the stability of the sensor is significantly improved and the functional life of the sensor is greatly prolonged.

A combined joint includes a sterile infusion joint (1), a connecting joint (2) and a sleeve (3). The sterile infusion joint (1) includes a first shell (11) and a liquid inlet end (12) connected to the first shell (11). A sealing plug bracket (112) and an elastic sealing plug (113) are provided in the first shell (11). The elastic sealing plug (113) is provided in the sealing plug bracket (112), and the elastic sealing plug (113) is provided with a slit (1131). The sleeve (3) is provided on an outside of the sterile infusion joint (1) and is detachably connected to the sterile infusion joint (1). The connecting joint (2) is rotatably connected to the sleeve (3), and the connecting joint (2) includes a connecting pipe (21).

The present invention relates to the technical field of float glass processes; the glass production system comprises a melting furnace, a first production line and a second production line; a molten glass cooling tank is formed in an outlet end of the melting furnace, and a clarification device and a bubble-removing mechanism are arranged on the molten glass cooling tank; the first production line and the second production line are arranged on two sides of the central axis of the melting furnace at intervals; the system further comprises a diversion channel 4 and a drainage groove 41; two ends of the diversion channel are respectively connected to the first production line and the second production line, and the drainage groove is arranged between the molten glass cooling tank and the diversion channel. The drainage groove is capable of changing the proportion of the diversion channel; the molten glass flows to the first production line via a shorter diversion channel and flows to the second production line via a longer diversion channel; the air in the molten glass in the molten glass cooling tank is eliminated by means of the clarification device and the bubble removing mechanism. The bubble removing device may comprise a bin 13 in communication with a pressure device 14. The bubble removing device may comprise a plurality of barrels 7, which may be each connected to a negative pressure assembly. Each barrel 7 is sequentially connected to molten glass inlet and to molten glass outlet.

The present disclosure proposes a battery disconnect unit, and relates to the technical field of batteries. The battery disconnect unit includes an electrical element and an electric connection assembly. The electric connection assembly includes first conducting bars and second conducting bars. A number of first conducting bars and a number of second conducting bars are arranged. The first conducting bar includes a first conducting piece body and a first connection portion connected to each other. The second conducting bar includes a second conducting piece body and a second connection portion connected to each other. A number of first conducting piece bodies and a number of second conducting piece bodies are arranged at intervals on respective planar layers. The first connection portions and the second connection portions are electrically connected to the electrical element respectively. The planar layer where the first conducting piece bodies are located and the planar layer where the second conducting piece bodies are located are set in a stacked manner, so that arrangement areas of the conducting pieces on the respective planar layers are extended, and the connection portions are connected to the electrical element, which avoids occupying an additional perpendicular space, making an overall layout more compact, and realizing a light and thin design of the battery disconnect unit.

Disclosed are a locking device, a tissue ligation apparatus, and an endoscopic surgical instrument, belonging to the technical field of medical devices. In the embodiment of the present invention, a locking member and an elastic member are provided in an inner cavity of a housing of the locking device, the elastic member is capable of generating an elastic force due to its own elastic deformation, and the elastic force is applied to the locking member to continuously press the locking member. The first threading hole and the second threading hole of the housing, and the threading channel of the locking member, can be configured to thread the medical wire, so that the locking member, being pressed by the elastic force of the elastic member, can press the medical wire, which is threaded through the threading channel, against the housing, thereby fixing the medical wire and realizing the locking of the medical wire. Moreover, since the elastic force of the elastic member continuously acts on the locking member, it can continuously press the medical wire, reducing the occurrence of loosening caused by tissue peristalsis or tissue elasticity, and improving surgical efficiency and the success rate of surgery.

Disclosed are a double-body trigger keyswitch structure (100) and a gamepad (1000). The double-body trigger keyswitch structure (100) includes: a seat body (10); a movable member (20) movably mounted at the seat body (10) and provided with a first state and a second state that are movably switched, and the movable member (20) being provided with a magnetic portion (21); a magnetic positioning member (30) relatively fixed to the seat body (10), a magnetic force of the magnetic positioning member (30) acting on the magnetic portion (21) to limit the movable member (20) to the first state or the second state; a trigger key (40) mounted at the seat body (10) and provided with a digital trigger portion (41) and an analog trigger portion (42); a digital switch (50) and an analog switch (60) both configured to be electrically connected to the main control board (20), and at least one of the digital switch (50) and the analog switch (60) being mounted at the movable member.

The present invention relates to the technical field of photosensitive dielectric materials, and specifically to a photosensitive polyimide composition, a manufacturing method for a pattern, a cured product, and an electronic component. The photosensitive polyimide composition includes a component (a) graft polymer soluble in an alkaline aqueous solution, which is selected from compounds represented by a structural formula as follows:wherein Ar₁ is selected from tetravalent organic groups, Ar₂ is selected from divalent organic groups; m + n = 5 to 200, n / (m + n) = 0.05 to 1, and k = 2 to 10; a component (b) photosensitizer; a component (c) thermal crosslinker, which contains a component (c1) crosslinker containing epoxy groups and a component (c2) a CH₂OR'-containing crosslinker; and a component (d) silane coupling agent. The photosensitive polyimide composition has excellent sensitivity and resolution, is capable of replicating fine patterns, and after curing at 200 °C, has low warpage stress and high chemical stability and adhesion.

The present invention relates to the technical field of photosensitive dielectric materials, and specifically to a photosensitive composition, a preparation method for a pattern, a cured product, and an electronic component. The photosensitive composition includes a component (a) graft polymer selected from compounds represented by structural formulas as follows:wherein Ar₁ is selected from tetravalent organic groups, Ar₂ is selected from divalent organic groups, and R' is any one selected from the group consisting of alkyl, alkoxy, cycloalkyl, and aryl; m + n = 5 to 200, n / (m + n) = 0.05 to 1, k = 2 to 10, and x = 0.5 to 10; a component (b) photoacid generator; a component (c) thermal crosslinker, which is a CH₂OR"-containing crosslinker, wherein R" is hydrogen or a monovalent organic group; and a component (d) alkaline compound. The photosensitive composition has excellent sensitivity and resolution, is capable of replicating fine patterns, and after low-temperature curing, has low warpage stress, and high chemical stability and adhesion.

A zirconia porcelain block, a preparation method and an application thereof are provided. The zirconia porcelain block includes an inner zirconia block and an outer zirconia block wrapping the inner zirconia block. The outer zirconia block includes a plurality of zirconia layers provided vertically in order of transparency, and the thickness of the zirconia layer with the maximum transparency and the thickness of the zirconia layer with the minimum transparency are both greater than the thickness of the zirconia layers between the maximum transparency and minimum transparency. The transparency of the inner zirconia block is the same as the maximum transparency of the plurality of zirconia layers, and the bottom end of the inner zirconia block is located in the zirconia layer with the minimum transparency. The height of the inner zirconia block is not less than two-thirds of the height of the outer zirconia block.