Electromagnetic valve external tightening gland, tightening tool and assembling method of electromagnetic valve

Abstract

The invention discloses an external tightening gland of an electromagnetic valve, a tightening tool and an assembling method of the electromagnetic valve, and belongs to the technical field of vehicle vibration damping. The external tightening gland comprises a gland body with a clamping platform arranged on the outer wall, the tightening tool is adopted for externally tightening the gland body to a vibration damper, and a foundation is provided for observing whether a clamping spring is accurately installed or not by changing the assembling sequence; the problem that connection between the electromagnetic valve and the shock absorber is likely to be loosened due to the fact that the installation quality of the clamping spring is unstable is effectively solved, the gland and the tightening tool are simple in structure, the assembling method is convenient and fast to operate, and stable connection between the electromagnetic valve and the shock absorber is effectively achieved.

Description

Technical Field

[0001] The present invention belongs to the technical field of vehicle shock absorption, and particularly relates to the connection between the solenoid valve of a solenoid valve shock absorber and the shock absorber. Specifically, it is an externally tightened gland and tightening tool for the solenoid valve. Background Art

[0002] With the development of technology and the improvement of people's living standards, the previous private passenger cars have gradually become difficult to meet people's needs. People have gradually accepted the changes brought by intelligence and have higher and higher requirements for intelligent driving and comfort. Traditional suspensions and traditional shock absorbers can no longer meet the current needs, and instead, the demand for intelligent suspensions and intelligent shock absorbers is increasing day by day. In terms of the current design and structure of intelligent suspensions and intelligent shock absorbers, according to their working principles, intelligent suspensions and intelligent shock absorbers require solenoid valves to provide damping force for adjustment and control. The solenoid valve shock absorber combines the mechanical structure of the traditional shock absorber and the intelligent response ability of the electromagnetic control system, realizing the intelligent dynamic adjustment of the damping force, and has shown significant advantages in the automotive field.

[0003] Currently, the connection structure between the solenoid valve and the shock absorber is that the coil of the solenoid valve is connected to the hydraulic cylinder assembly of the shock absorber. The coil of the solenoid valve is fixed on the valve seat, and the connection between the coil and the hydraulic cylinder assembly is protected by a gland. The coil is clamped and fixed to the gland by a snap ring, and the gland is screwed to the valve seat. The current assembly sequence is as follows: First, with the cooperation of the holes on the gland, the gland is tightly assembled on the hydraulic cylinder assembly of the shock absorber, and then the solenoid valve coil assembly snap ring is pressed into the solenoid valve gland. After the snap ring is snapped into the gland, the clamping is completed, that is, the assembly of the solenoid valve and the shock absorber is realized. However, since the snap ring is a special-shaped part with multi-point contact, when the solenoid valve coil assembly snap ring is pressed into the gland, there is occasionally a situation where the snap ring is not pressed in place. But according to the current structural form, after the solenoid valve coil is pressed into the gland, the solenoid valve seat blocks the opening of the gland, and it is completely impossible to observe whether the snap ring is clamped in place, which brings the possibility of the coil coming out, and further leads to the failure to achieve a stable connection between the solenoid valve and the shock absorber. Summary of the Invention

[0004] In order to solve the deficiencies of the prior art, the present invention proposes an externally tightened gland and tightening tool for the solenoid valve and an assembly method for the solenoid valve, and discloses a new structural form and assembly method for connecting the solenoid valve and the shock absorber to achieve a stable connection between the solenoid valve and the shock absorber.

[0005] The technical problems to be solved by the present invention are realized through the following technical solutions: An externally tightened gland for a solenoid valve is cylindrical. Its upper end is connected to the solenoid valve seat, and its lower end is connected to the hydraulic cylinder assembly of the shock absorber. An internal thread that mates with the hydraulic cylinder assembly is provided on the inner wall of its middle part. The inner side of its upper part is inwardly constricted to form an installation snap ring. A snap spring is provided between the installation snap ring and the internal thread. In the present invention, a clamping platform for assisting in externally clamping and screwing is provided on the outer wall of the gland. There are at least two clamping platforms, which are symmetrically distributed around the center of the gland. The clamping platforms are externally tangent to the ring where the gland wall is located.

[0006] In the present invention, the number of the clamping platforms is 2 or 3 or 4 or 6, preferably 4.

[0007] In the present invention, a sealing groove is provided on the inner wall of the lower part of the gland. A sealing ring is embedded in the sealing groove, and the sealing ring is in interference fit with the part of the hydraulic cylinder assembly extending into the gland.

[0008] A tightening tool for an externally tightened gland of a solenoid valve includes an inner cylinder and an outer cylinder arranged concentrically. The inner wall of the inner cylinder is provided with uniformly distributed clamping planes, which are the same in number as the clamping platforms on the outer wall of the gland and are in clearance fit. The outer cylinder is a cylindrical tube with a closed bottom, and the inner cylinder and the outer cylinder are fixedly connected.

[0009] In the present invention, a filling layer is provided between the inner cylinder and the outer cylinder, and is fixedly connected to the outer cylinder and the inner cylinder respectively.

[0010] In the present invention, an anti-slip sleeve is sleeved on the outer cylinder or anti-slip stripes are provided on the outer wall of the outer cylinder.

[0011] In the present invention, a bevel for convenient insertion is provided on the inner wall of the inner cylinder at the opening of the tightening tool.

[0012] In the present invention, a mounting hole for cooperating with a torque wrench is provided at the center of the bottom of the outer cylinder.

[0013] An assembly method for a solenoid valve is a connection method for a solenoid valve and a hydraulic cylinder assembly of a shock absorber, including using the above tightening tool to assemble the above gland onto the hydraulic cylinder assembly of the shock absorber.

[0014] In the present invention, the assembly method includes the following steps: (1) Clamp the snap spring on the solenoid valve coil; (2) Press the solenoid valve coil equipped with the snap spring into the gland from the upper end of the gland, and make the snap spring cross the installation snap ring of the gland, embed between the installation snap ring and the internal thread and stretch out, so as to realize the clamping connection between the solenoid valve and the gland; (3) Observe the snap spring inside the gland from the lower end of the gland to judge whether the snap spring is pressed in place; (4)After determining that the snap ring is pressed in place, put the lower end of the gland onto the connecting part of the hydraulic cylinder assembly of the shock absorber, so that the internal thread on the inner wall of the gland reaches the external thread of the hydraulic cylinder assembly; (5)Use a tightening tool to hold the valve seat end of the solenoid valve coil, so that the clamping plane of the tightening tool fits with the clamping platform on the outer wall of the gland, and turn the tightening tool to achieve the screwed connection between the gland and the hydraulic cylinder assembly, thereby realizing the stable connection between the solenoid valve and the shock absorber.

[0015] In the present invention, in step (3), the observation of the snap ring inside the gland can be carried out by deflecting the viewing angle and observing the snap ring through the gap between the internal thread of the gland and the solenoid valve coil from different angles. Since there is a gap between the internal thread of the gland and the coil, the snap ring is clamped and fixed by means of multi-point contact. It contacts the inner wall of the gland and the outer wall of the coil respectively. The snap ring located between the two adjacent contact points can be clearly observed through the gap between the internal thread of the gland and the coil. This part can be used as the observation feature point. If there is a part of the snap ring that does not cross the installation snap ring of the gland, then there must be some feature points blocked by the installation snap ring and cannot be observed. Therefore, the number, position and length of the observable feature points can represent whether the snap ring is pressed in place.

[0016] Compared with the prior art, the present invention has the following advantages: This application provides a gland with a new structure and a tightening tool that cooperates with it. Through a new assembly method, it effectively solves the problem that the connection between the solenoid valve and the shock absorber may become loose due to unstable installation quality of the snap ring; The sealing structure provided on the gland in this application effectively separates the screwed area inside the gland from the external environment, preventing external mud and water from reaching the screwed area along the installation gap of the gland and causing corrosion of the gland and the solenoid valve housing; The tightening tool in this application can effectively cooperate with the gland to assist the gland to be screwed and fixed to the shock absorber conveniently and quickly, and the operation is simple; The anti-slip design and groove provided on the tightening tool in this application are more convenient for people to operate; The assembly method of this application changes the assembly sequence in the prior art. With the gland with a new structure and the matching tightening tool, it effectively reduces the assembly difficulty and improves the assembly efficiency; The observation link set in the assembly method of this application is simple, ingenious and well-founded, and can be replaced by automated and intelligent equipment instead of manual labor. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the connection structure after the gland assembly of the present invention is completed; Figure 2 is Figure 1 the schematic diagram of the gland structure in Figure 3 is the top view of Figure 2 ; Figure 4 is the A-A sectional view of Figure 3 ; Figure 5 is the C-C sectional view of Figure 3 ; Figure 6 is the top view of the tightening tool of the present invention; Figure 7 is Figure 6 the side view semi-sectional view of

[0018] In the figure: gland 1, solenoid valve 2, sealing ring 3, hydraulic cylinder assembly 4, coil 5, snap ring 6, clamping platform 7, mounting snap ring 8, internal thread 9, sealing groove 10, outer cylinder 11, inner cylinder 12, clamping plane 13, filling layer 14, anti-slip sleeve 15, mounting hole 16, bevel 17. Specific embodiments

[0019] The present invention will be further described below in conjunction with the accompanying drawings of the specification and specific preferred embodiments, but the protection scope of the present invention is not limited thereby. Embodiment

[0020] An externally tightened gland for a solenoid valve, as shown in Figure 1 , is arranged at the connection between the solenoid valve and the shock absorber hydraulic cylinder assembly, is cylindrical, its upper end is connected to the solenoid valve seat, its lower end is connected to the hydraulic cylinder assembly of the shock absorber, an internal thread matching the hydraulic cylinder assembly is arranged on the inner wall of the middle part thereof, the inner side of the upper part thereof is inwardly constricted to form a mounting snap ring, a snap ring is arranged between the mounting snap ring and the internal thread, in Figures 2 - 5 , a clamping platform is arranged on the outer wall of the gland, the clamping platform consists of 4, which are symmetrically distributed with the center of the gland as the center, the clamping platform is externally tangent to the ring where the gland wall is located, a sealing groove is arranged on the lower inner wall of the gland, a sealing ring is embedded in the sealing groove, and the sealing ring is in interference fit with the part of the hydraulic cylinder assembly extending into the gland. Embodiment

[0021] A tightening tool for an externally tightened gland of a solenoid valve, as shown in Figure 6 and 7 , includes a concentrically arranged inner cylinder and outer cylinder, the inner wall of the inner cylinder is provided with uniformly distributed clamping planes, the number is the same as that of the clamping platforms on the outer wall of the gland and is in clearance fit, the outer cylinder is a cylindrical cylinder with a closed bottom, a filling layer is arranged between the inner cylinder and the outer cylinder, and is fixedly connected to the outer cylinder and the inner cylinder respectively, an anti-slip sleeve is sleeved outside the outer cylinder, a bevel for convenient insertion is arranged at the opening of the inner wall of the inner cylinder, and a mounting hole for cooperating with a torque wrench is opened at the center of the bottom of the outer cylinder. Embodiment

[0022] An assembly method of a solenoid valve, which is a connection method between a solenoid valve and a shock absorber hydraulic cylinder assembly, includes assembling the gland in Embodiment 1 onto the shock absorber hydraulic cylinder assembly using the tightening tool in Embodiment 2. The specific steps include: (1) Clamp the snap ring on the solenoid valve coil; (2) Press the solenoid valve coil equipped with the snap ring into the gland from the upper end of the gland, and make the snap ring cross the mounting snap ring of the gland, embed between the mounting snap ring and the internal thread and stretch out, to achieve the snap connection between the solenoid valve and the gland; (3) Observe the snap ring inside the gland from the lower end of the gland, and by deflecting the viewing angle, find the observable snap ring and judge whether the snap ring is pressed in place; (4) After determining that the snap ring is pressed in place, put the lower end of the gland on the connecting part of the shock absorber hydraulic cylinder assembly, so that the internal thread on the inner wall of the gland reaches the external thread of the hydraulic cylinder assembly; (5) Use the tightening tool to buckle on the valve seat end of the solenoid valve coil, so that the clamping plane of the tightening tool matches the clamping platform on the outer wall of the gland, and turn the tightening tool to achieve the screw connection between the gland and the hydraulic cylinder assembly, and further achieve the stable connection between the solenoid valve and the shock absorber.

Claims

1. An externally tightened gland for a solenoid valve, which is cylindrical. Its upper end is connected to the solenoid valve seat, and its lower end is connected to the hydraulic cylinder assembly of the shock absorber. An internal thread that mates with the hydraulic cylinder assembly is provided on the inner wall of its middle part. The inner side of its upper part is inwardly constricted to form an installation snap ring. A snap spring is arranged between the installation snap ring and the internal thread. It is characterized in that: An auxiliary clamping platform for externally clamping and screwing is provided on the outer wall of the gland. There are at least two clamping platforms, which are symmetrically distributed with the center of the gland as the center. The clamping platforms are externally tangent to the ring where the gland wall is located.

2. The gland according to claim 1, characterized in that: A sealing groove is provided on the inner wall of the lower part of the gland, and a sealing ring is embedded in the sealing groove. The sealing ring is in interference fit with the part of the hydraulic cylinder assembly extending into the gland.

3. A tightening tool for externally tightening the gland of a solenoid valve, which assembles the gland as described in claim 1 or 2, and is characterized in that: It includes a concentrically arranged inner cylinder and an outer cylinder. The inner wall of the inner cylinder is provided with evenly distributed clamping planes, which are the same in number as the clamping platforms on the outer wall of the gland and are in clearance fit. The outer cylinder is a cylinder with a closed bottom, and the inner cylinder and the outer cylinder are fixedly connected.

4. The tightening tool according to claim 3, characterized in that: A filling layer is provided between the inner cylinder and the outer cylinder, and is fixedly connected to the outer cylinder and the inner cylinder respectively.

5. The tightening tool according to claim 3, characterized in that: An anti-slip sleeve is sleeved on the outer cylinder or anti-slip stripes are provided on the outer wall of the outer cylinder.

6. The tightening tool according to claim 3, characterized in that: A bevel for convenient insertion is provided on the inner wall of the inner cylinder at the opening of the tightening tool.

7. The tightening tool according to claim 3, characterized in that: An installation hole for cooperating with a torque wrench is provided at the center of the bottom of the outer cylinder.

8. An assembling method of a solenoid valve, characterized in that: It is a connection method between a solenoid valve and a shock absorber hydraulic cylinder assembly, including using the tightening tool described in any one of claims 3-7 to assemble the gland described in claim 1 or 2 onto the shock absorber hydraulic cylinder assembly.

9. The assembly method according to claim 8, characterized in that: It includes the following steps: (1) Clamp the snap ring on the solenoid valve coil. (2) Press the solenoid valve coil equipped with the snap ring into the gland from the upper end of the gland, and make the snap ring cross the installation snap ring of the gland, embed between the installation snap ring and the internal thread, and expand to realize the clamping connection between the solenoid valve and the gland. (3) Observe the snap ring inside the gland from the lower end of the gland to judge whether the snap ring is pressed in place. (4) After determining that the snap ring is pressed in place, put the lower end of the gland on the connecting part of the shock absorber hydraulic cylinder assembly, so that the internal thread on the inner wall of the gland reaches the external thread of the hydraulic cylinder assembly. (5) Use the tightening tool to buckle on the valve seat end of the solenoid valve coil, so that the clamping plane of the tightening tool cooperates with the clamping platform on the outer wall of the gland, and twist the tightening tool to realize the screwing connection between the gland and the hydraulic cylinder assembly, and further realize the stable connection between the solenoid valve and the shock absorber.

10. The assembly method according to claim 9, characterized in that: (5) In step (3), when observing the snap ring inside the gland, through the way of deflecting the perspective, observe the snap ring from different angles through the gap between the internal thread of the gland and the solenoid valve coil.

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