temperature clamp

Abstract

Temperature clamp with a temperature measuring arrangement and a clamping jaw arrangement, wherein the clamping jaw arrangement comprises a first clamping part (1) and a second clamping part (2), the first clamping part (1) and the second clamping part (2) are rotatably connected via a first rotating shaft (3), characterized in that the first clamping part (1) comprises a first claw section (1a) and a first handle (1b) rotatably connected to the first claw section (1a), the second clamping part (2) comprises a second claw section (2a) and a second handle (2b) connected to the second claw section (2a), the temperature measuring arrangement comprises a temperature measuring section and a display section, the temperature measuring section is electrically connected to the display section, the temperature measuring section is arranged on the first claw section (1a) and / or the second claw section (2a),the display section (5) is arranged on an outer surface of the first handle (1b) and can be rotated into an observation position by rotating the first handle (1b).

Description

Technical area

[0001] The present utility model relates to the field of measuring instruments, in particular to a temperature clamp. Technical background

[0002] Currently, during the maintenance of cooling systems, it is often necessary to measure the temperatures of various pipes in the cooling systems. Therefore, temperature clamps with a temperature sensing function are often used to measure the temperatures of the pipes in the refrigeration systems. Thermocouples are currently one of the most widely used temperature measurement components in the industry. They have the advantage of high measurement accuracy and a wide temperature measurement range and are used in temperature clamps.

[0003] For example, US Patent No. US10365165B2 discloses a thermocouple assembly for measuring the temperature of pipes, comprising a pipe clamp with a pair of different metal strips mounted therein to contact a pipe held in the pipe clamp. A thermocouple reading instrument is connected to the metal strips to indicate the temperature of the pipe.

[0004] However, among existing temperature clamps, only a few are equipped with a built-in display. Although some products have a display integrated into the handle, the clamp jaws and handle of the temperature clamp are generally one-piece, and the handle cannot be rotated as needed. When the temperature clamp is in use, the display screen may be facing away from the temperature measurement personnel due to the different arrangements and paths of the pipes in the cooling system, making it inconvenient for the temperature measurement personnel to observe the temperature display information on the display screen on the handle. Content of the utility model

[0005] In view of the problems existing in the prior art, an object of the present utility model is to provide a temperature clamp that makes it possible to conveniently observe the temperature value displayed on the temperature clamp.

[0006] The purpose of the present utility model is achieved with the following technical scheme: Temperature clamp comprising a temperature measuring assembly and a clamping jaw assembly, wherein the clamping jaw assembly comprises a first clamping part and a second clamping part, the first clamping part and the second clamping part being rotatably connected via a first rotary shaft;the first clamping part comprises a first claw portion and a first handle rotatably connected to the first claw portion, the second clamping part comprises a second claw portion and a second handle connected to the second claw portion, the temperature measuring arrangement comprises a temperature measuring portion and a display portion, the temperature measuring portion is electrically connected to the display portion, the temperature measuring portion is arranged on the first claw portion and / or the second claw portion, the display portion is arranged on an outer surface of the first handle, the first handle can be rotated so that the display portion is rotated to an observation position;

[0007] In addition, the first clamping part includes a second rotary shaft, the first claw portion is provided with a first through hole, the first handle is provided with a second through hole, the second rotary shaft can pass through the first through hole and the second through hole sequentially, both ends of the second rotary shaft are provided with a restricting part, the restricting part is used to prevent the second rotary shaft from leaving the first through hole and the second through hole.

[0008] In addition, the limiting member includes a retaining ring groove arranged on the second rotary shaft and a retaining ring arranged in the retaining ring groove, and the limiting member further includes a fastening member arranged on the first claw portion and / or the first handle for fastening the retaining ring.

[0009] Furthermore, the first handle is provided on a side facing the first claw portion with an arcuate groove arranged around the second through hole, and the first claw portion is provided with a protrusion fitted into the groove.

[0010] In addition, the second rotary shaft is provided with an annular damping groove, the damping groove is provided with a damping ring, and the damping ring is in contact with an inner wall of the second through hole.

[0011] Furthermore, the temperature measuring section includes a temperature measuring piece attached to the first claw section, and the temperature measuring piece is electrically connected to the display section via two wires made of different materials.

[0012] In addition, the first claw portion is provided with arcuate clamping surfaces, the temperature measuring piece is elastic, and the temperature measuring piece is arranged convexly with respect to the clamping surfaces.

[0013] In addition, the first clamping part is provided with a scale, and the second clamping part is provided with a pointer that can be connected to the scale.

[0014] In addition, the first handle is provided with a battery electrically connected to the display part, a side of the first handle remote from the first claw portion is provided with a charging port, the charging port is electrically connected to the battery, the first handle is provided with a removable blocking cover, and the blocking cover is used to cover the charging port.

[0015] In addition, the first handle and / or the second handle is provided with a non-slip part on its outer surface.

[0016] Compared with the prior art, the present utility model has the following advantageous effects: by rotatably connecting the first handle to the first claw portion, the temperature measuring portion is arranged on the first claw portion and / or the second claw portion, the display portion is arranged on the outer surface of the first handle, the first handle can be rotated so that the display portion is rotated to an observation position, so that it is convenient for the temperature measuring personnel to observe the temperature information displayed on the display portion. Description of the drawings Fig. 1 is a schematic perspective view of the temperature clamp according to the present utility model; Fig. 2 is a left view of the temperature clamp according to the present utility model; Fig. 3 is a front view of the temperature clamp according to the present utility model; Fig. 4 is a right view of the temperature clamp according to the present utility model; Fig. 5 is a rear view of the temperature clamp according to the present utility model; Fig. 6 is a plan view of the temperature clamp according to the present utility model; Fig. 7 is a bottom view of the temperature clamp according to the present utility model; Fig. Figure 8 is a sectional view of section AA of the Fig. 3; Fig. 9 is a schematic enlarged view of a part B in Fig. 8; Fig. 10 is a schematic perspective view of the first handle according to the present utility model; Fig. 11 is a first partial perspective view of the temperature clamp according to the present utility model; Fig. 12 is a second partial perspective view of the temperature clamp according to the present utility model; Fig. 13 is a schematic enlarged view of a part C in Fig. 12; Fig. 14 is a third partial perspective view of the temperature clamp according to the present utility model; Fig. 15 is a fourth partial perspective view of the temperature clamp according to the present utility model; and Fig. 16 is a schematic enlarged view of a part D in Fig. 1. In numbers:

[0017] 1 - first clamping part; 1a - first claw portion; 1b - first handle; 1c - second rotating shaft; 1d - first through hole; 1e - second through hole; 1f - retaining ring; 1g - fixing piece; 1h - limiting piece; 1i - slot; 1j - groove; 1k - boss; 1l - damping ring; 1m - blocking cover; 1n - anti-slip layer; 1o - identification ring; 2 - second clamping part; 2a - second claw part; 2b - second handle; 2c - anti-slip groove; 3 - first rotating shaft; 4 - torsion spring; 5 - indicating part; 6 - temperature measuring piece; 7 - battery. Embodiments

[0018] The technical scheme of the present utility model is described clearly and completely below with reference to the attached drawings. Of course, the examples described here are only some examples of the present utility model and not all possible examples of the present utility model. All other examples that can be found by a person skilled in the art with ordinary knowledge based on the examples listed here, without requiring creative effort, fall within the scope of protection of the present utility model.

[0019] When describing the present utility model, it should be noted that the orientation or positional relationships indicated by the terms "center," "top," "bottom," "left," "right," "vertical," "horizontal," "inside," and "outside," etc., are based on the orientation or positional relationships shown in the accompanying drawings. They are used solely to facilitate and simplify the description of the present utility model and do not imply that the device or element in question must have a particular orientation or be designed and operated in a particular orientation. The use of these terms should therefore not be construed as a limitation of the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be interpreted as indicating relative importance.

[0020] In the description of the present utility model, it should be noted that the terms "install," "connect," and "connection," unless expressly stated and defined otherwise, should be understood in their general meaning. For example, a connection may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; or it may be a direct connection or an indirect connection via an intermediate medium or internal communication between two elements. The specific meanings of the terms in the present utility model can be understood by those skilled in the art in their context. Furthermore, the technical features of the various embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0021] The present utility model discloses a temperature clamp, Fig. 1 to 7 discloses the shape of the temperature clamp and the temperature clamp is used to measure the temperature of the pipes of a cooling system.

[0022] As in the Fig. 1 to 8, the temperature clamp disclosed by the present utility model comprises a jaw assembly, the jaw assembly comprising a first clamping part 1 and a second clamping part 2, the first clamping part 1 comprising a first claw portion 1a and a first handle 1b rotatably connected to the first claw portion 1a, and the second clamping part 2 comprising a second claw portion 2a and a second handle 2b connected to the second claw portion 2a.

[0023] As in Fig. 1 and the Fig. 8 to 14, the first clamping part 1 in this example particularly comprises a second rotary shaft 1c, the first claw portion 1a is provided with a first through-hole 1d, the first handle 1b is provided with a second through-hole 1e, the first handle 1b is provided with a second through-hole 1e, the second rotary shaft 1c can pass through the first through-hole 1d and the second through-hole 1e in succession, both ends of the second rotary shaft 1c are provided with a restricting part, the restricting part is used to prevent the second rotary shaft 1c from leaving the first through-hole 1d and the second through-hole 1e. More specifically, as shown in the Fig. 12 to 15, the limiting member includes a snap ring groove disposed on the second rotary shaft 1c and a snap ring 1f disposed in the snap ring groove, the limiting member further including a fixing member disposed on at least one of the first claw portion 1a and the first handle 1b, the fixing member being used to fix the snap ring 1f.In this example, one end of the second rotary shaft 1c is fixed near the first handle 1b by the retaining ring 1f, the fixing part is a fixing piece 1g, the fixing piece 1g is detachably connected to the first handle 1b, the fixing piece 1g is provided with a copy groove having the same shape as the retaining ring 1f; one end of the second rotary shaft 1c is fixed near the first claw portion 1a by a restricting piece 1h, the restricting piece 1h is cylindrical, the restricting piece 1h has a circular cross section whose area is larger than the cross section area of ​​the first through hole 1d.During assembly, first, the second rotary shaft 1c is passed through the first through hole 1d and the second through hole 1e in sequence until the restricting piece 1h abuts against the first claw portion 1a, then the snap ring 1f is fastened in the snap ring groove; then, the fixing piece 1g is installed outside the snap ring 1f, the snap ring 1f enters the copy groove, and the fixing piece 1g is fixed to the first handle 1b. In other examples, the first claw portion 1a and the first handle 1b may be connected by means of a slider and a slide rail connection, wherein the first handle 1b is provided with a rotatable slide rail and the first claw portion 1a is provided with a rotatable slider to be connected to the rotatable slide rail. Furthermore, as shown in FIG. Fig. 5, in this example the second claw portion 2a and the second handle 2b are formed integrally.

[0024] As in Fig. 1, Fig. 14 and Fig. As shown in Figure 16, the first clamping part 1 and the second clamping part 2 are rotatably connected by a first rotary shaft 3 to form a clamp. Specifically, in this example, the first claw portion 1a and the second claw portion 2a are rotatably connected via the first rotary shaft 3. The first rotary shaft 3 is provided with a torsion spring 4, and two ends of the torsion spring 4 abut against the second rotary shaft 1c and the second handle 2b, respectively. Under the action of the torsion spring 4, the first claw portion 1a and the second claw portion 2a of the temperature clamp of the present invention abut against each other under normal conditions.During use of the temperature clamp of the present utility model, the first handle 1b and the second handle 2b are subjected to a force such that the first claw portion 1a and the second claw portion 2a are opened; and the first claw portion 1a and the second claw portion 2a are each moved near a pipe to be measured of the cooling system; then, the force exerted on the first handle 1b and the second handle 2b is released, and the first claw portion 1a and the second claw portion 2a clamp the pipe to be measured of the cooling system under the action of the torsion spring 4.

[0025] As in Fig. 1 and Fig. As shown in Figure 14, the temperature clamp disclosed by the present utility model further comprises a temperature measuring assembly. The temperature measuring assembly includes a temperature measuring section and a display section 5. The display section 5 is used to display temperature information. The temperature measuring section is electrically connected to the display section. The temperature measuring section is disposed on at least one of the first claw section 1a and the second claw section 2a. The display section is disposed on an outer surface of the first handle 1a and can be rotated to an observation position by rotating the first handle 1a.Specifically, in this example, the temperature sensing portion includes a temperature sensing piece 6 fixed to the first claw portion 1a. The temperature sensing piece 6 is electrically connected to the display portion by two wires made of different materials. A through-groove is formed in the second rotary shaft 1c along an axial direction of the second rotary shaft 1c, and both wires made of different materials pass through the through-groove. The first claw portion 1a is provided with arcuate clamping surfaces. The clamping surfaces are respectively arranged on two sides of the first claw portion 1a. The temperature sensing piece 6 is arranged between the two clamping surfaces. The temperature sensing piece 6 is elastic, and the temperature sensing piece 6 is arranged convexly with respect to the clamping surfaces.One end of the first claw portion 1a is provided with a slot 1i. One end of the temperature measuring piece 6 is firmly connected to the first claw portion 1a by a bolt, and the other end of the temperature measuring piece 6 is arranged in the slot 1i. In this example, when the temperature clamp clamps a pipe of the refrigeration system to be measured, the temperature measuring piece 6 touches the pipe of the refrigeration system to be measured and is thereby deformed due to its elasticity. The temperature measuring piece 6 is moved in the slot 1i, and at the same time, the clamping surfaces rest against the pipe of the refrigeration system to be measured.The temperature clamp of the present utility model operates according to the principle of a thermocouple array for temperature measurement. The temperature measuring piece 6 and the two wires made of different materials correspond to a thermocouple array, and the temperature of the refrigeration system pipe to be measured is transmitted to the two wires made of different materials via the temperature measuring piece 6. Since the two wires are made of different materials and thus the heat transfer rates of the two wires are different, a temperature difference exists between the two wires. When the two wires exhibiting a temperature difference are electrically connected to the display part 5, the display part 5 receives a thermoelectromotive force generated by the thermocouple array, and after calculating the thermoelectromotive force, the temperature of the refrigeration system pipe can be displayed on the display part 5.In other examples, the temperature measuring section may also be arranged on the first claw section 1a and the second claw section 2a, respectively, and the temperature measuring sections located on the first claw section 1a and the second claw section 2a are composed of conductors made of different materials, each temperature measuring section being electrically connected to the display section; the principle of a thermocouple array is also used for temperature measurement.In the temperature clamp of the present utility model, by rotatably connecting the first handle 1b to the first claw portion 1a, the temperature measuring portion is arranged on the first claw portion 1a and / or the second claw portion 2a, and the display portion 5 is arranged on the outer surface of the first handle 1b. The display portion 5 is rotated to an observation position by rotating the first handle 1b, so that it is convenient for the temperature measuring personnel to observe the temperature information of the pipe of the cooling system displayed on the display portion 5.

[0026] As in Fig. 10, Fig. 12 and Fig. 13, in this example, the first grip 1b is provided with a groove 1j in a side facing the first claw portion 1a. The groove 1j is arcuate, and the groove 1j is arranged around the second through-hole 1e. The first claw portion 1a is provided with a protrusion 1k that is fitted into the groove 1j. During use of the temperature clamp of the present utility model, the protrusion 1k rotates in the groove 1j when the first grip 1b is rotated. In the present utility model, by arranging the groove 1j and the protrusion 1k, the rotation range of the first grip 1b is limited to prevent the first grip 1b from being rotated to a rarely used observation position, so that the temperature clamp is convenient to use.

[0027] As in Fig. 9 and Fig. As shown in FIGS. 11 to 13, in this example, the second rotary shaft 1c is provided with an annular damping groove, the damping groove is provided with a damping ring 11, and the damping ring 1l is in contact with an inner wall of the second through-hole 1d. In the present utility model, due to the arrangement of the damping ring 11, a damping feeling is generated when the first handle 1b is rotated. At the same time, since the damping ring 11 is in contact with the inner wall of the second through-hole 1d, a frictional force is generated between the damping ring 11 and the inner wall of the second through-hole 1d, so that the first handle 1b cannot be rotated freely without an external force when the temperature clamp is used.

[0028] In the temperature clamp of the present utility model, the first clamping part 1 is provided with a scale and the second clamping part 2 is provided with a pointer to be connected to the scale. In particular, in this example, as shown in Fig. 1 and Fig. As shown in Figure 16, the scale is provided on the first claw portion 1a, and the pointer is provided on the second claw portion 2a. When the first claw portion 1a is rotated with respect to the second claw portion 2a, the pointer corresponds to different scales on the scale. In this example, considering that the temperature clamp is used to clamp a pipe of the cooling system, and the diameters of the pipes of the cooling system have a variety of specifications, the scale is provided with scales corresponding to various specifications of pipe diameters, such as "3 / 8" and "11 / 8", etc., where "3 / 8" represents a pipe with an outer diameter of 3 / 8 inch. With the arrangement of the scale and the pointer in the present utility model, it is convenient for the temperature measuring personnel to determine the diameter of the pipe of the cooling system clamped by the temperature clamp.

[0029] As in Fig. 8 and Fig. As shown in FIG. 15, in this example, the first grip 1b is provided with a battery 7 electrically connected to the display portion 5. A side of the first grip 1b remote from the first claw portion 1a is provided with a charging terminal. The charging terminal is electrically connected to the battery 7. The first grip 1b is provided with a detachable blocking cover 1m. The blocking cover 1m is used to cover the charging port. By disposing the blocking cover 1m in the present utility model, dust accumulation in the charging port can be prevented.

[0030] In the temperature clamp of the present utility model, the first handle 1b and / or the second handle 2b are provided with a non-slip part on their outer surface. In this example, as shown in Fig. 6 and Fig. As shown in Figure 7, both the first handle 1b and the second handle 2b are provided with an anti-slip portion on their outer surfaces. The anti-slip portion on the first handle 1b is a slip-resistant layer 1n disposed on the outer surface of the first handle 1b, and the anti-slip portion on the second handle 2a is a slip-resistant groove 2c disposed on the outer surface of the second handle 2a. In the present utility model, the temperature clamp is comfortable to use due to the provision of the anti-slip portion.

[0031] As in Fig.7, in this example, the first handle 1b is covered with an identification ring 1o, wherein the identification ring 1o can be designed in different colors, such as red and blue. When multiple temperature clamps of the present utility model are sold in a set, each temperature clamp is provided with an identification ring 1o in different colors. Take temperature clamps provided with a red identification ring 1o and a blue identification ring 1o as an example. The temperature clamp with the red identification ring 1o is used for clamping high-temperature pipes, while the temperature clamp with the blue identification ring 1o is used for clamping low-temperature pipes. The temperature measuring personnel can quickly recognize whether the pipe held by the temperature clamp is a low-temperature pipe or a high-temperature pipe based on the color of the identification ring 1o.

[0032] In summary, in the temperature clamp of the present utility model, by rotatably connecting the first handle 1b to the first claw portion 1a, the temperature measuring portion is disposed on the first claw portion 1a and / or the second claw portion 2a, the display portion 5 is disposed on the outer surface of the first handle 1b, and the display portion 5 is rotated to an observation position by rotating the first handle 1b, making it convenient for the temperature measuring personnel to observe the temperature information of the cooling system pipe displayed on the display portion 5. The arrangement of the groove 1j and the protrusion 1k limits the rotation range of the first handle 1b to prevent the first handle 1b from being rotated to an unusual observation position, thus making the temperature clamp convenient to use.Due to the arrangement of the damping ring 11, a damping feeling is created when the first handle 1b is rotated. At the same time, since the damping ring 11 is in contact with the inner wall of the second through-hole 1d, a frictional force is generated between the damping ring 11 and the inner wall of the second through-hole 1d, so that the first handle 1b cannot be rotated freely without an external force when the temperature clamp is used. The arrangement of the scale and pointer makes it convenient for temperature measurement personnel to determine the diameter of the refrigeration system pipe held by the temperature clamp. The arrangement of the locking cover 1m prevents dust accumulation in the filling port. The arrangement of the anti-slip part makes the temperature clamp comfortable to use.

[0033] It should be emphasized that the examples described above are only some preferred examples of the present utility model and are not intended to represent a limitation of the present utility model. Any simple variation, equivalent change, or modification made to the above examples in accordance with the technical essence of the present utility model should be considered to fall within the scope of the technical scheme of the present utility model. QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature

[0000] US 10365165B2

[0003]

Claims

[1] Temperature clamp with a temperature measuring arrangement and a clamping jaw arrangement, wherein the clamping jaw arrangement has a first clamping part (1) and a second clamping part (2), the first clamping part (1) and the second clamping part (2) are rotatably connected via a first rotary shaft (3), characterized byin that the first clamping part (1) has a first claw section (1a) and a first handle (1b) rotatably connected to the first claw section (1a), the second clamping part (2) comprises a second claw section (2a) and a second handle (2b) connected to the second claw section (2a), the temperature measuring arrangement comprises a temperature measuring section and a display section, the temperature measuring section is electrically connected to the display section, the temperature measuring section is arranged on the first claw section (1a) and / or the second claw section (2a), the display section (5) is arranged on an outer surface of the first handle (1b) and can be rotated into an observation position by rotating the first handle (1b). [2] Temperature clamp according to claim 1, characterized bythat the first clamping part (1) has a second rotary shaft (1c), the first claw portion (1a) is provided with a first through hole (1d), the first handle (1b) is provided with a second through hole (1e), the second rotary shaft (1c) can pass through the first through hole (1d) and the second through hole (1e) one after the other, both ends of the second rotary shaft (1c) are provided with a restricting part, the restricting part is used to prevent the second rotary shaft (1c) from leaving the first through hole (1d) and the second through hole (1e). [3] Temperature clamp according to claim 2, characterized byin that the limiting part comprises a locking ring groove arranged on the second rotary shaft (1c) and a locking ring (1f) arranged in the locking ring groove, the limiting part further comprises a fastening part located on the first claw portion (1a) and / or the first handle (1b), which serves to fasten the locking ring (1f). [4] Temperature clamp according to claim 2, characterized by that the first handle (1b) is provided with a groove (1j) in a side facing the first claw portion (1a), the groove (1j) is arcuate and is arranged around the second through hole (1e), and the first claw portion (1a) is provided with a hump (1k) which is fitted into the groove (1j). [5] Temperature clamp according to claim 2, characterized bythat the second rotary shaft (1c) is provided with an annular damping groove, the damping groove is provided with a damping ring (11), the damping ring (11) is in contact with an inner wall of the second through hole (1e). [6] Temperature clamp according to claim 1, characterized by in that the temperature measuring section comprises a temperature measuring piece (6) which is attached to the first claw section (1a), the temperature measuring piece (6) being electrically connected to the display section via two wires made of different materials. [7] Temperature clamp according to claim 6, characterized by that the first claw section (1a) is provided with arcuate clamping surfaces, the temperature measuring piece (6) is elastic and is arranged convex to the clamping surfaces. [8] Temperature clamp according to claim 1, characterized bythat the first clamping part (1) is provided with a scale, the second clamping part (2) is provided with a pointer which is to be connected to the scale. [9] Temperature clamp according to claim 1, characterized by that the first handle (1b) is provided with a battery (7) which is electrically connected to the display part (5), a side of the first handle (1b) which is remote from the first claw part (1a) is provided with a charging port, the charging port is electrically connected to the battery (7), the first handle (1b) is provided with a removable blocking cover (1m), the blocking cover (1m) is used to cover the charging port. [10] Temperature terminal according to claim 1, characterized by that the first handle (1b) and / or the second handle (2b) is / are provided with an anti-slip section on its outer surface.

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